diff options
Diffstat (limited to 'src/crepe')
172 files changed, 10029 insertions, 859 deletions
diff --git a/src/crepe/Asset.cpp b/src/crepe/Asset.cpp deleted file mode 100644 index 15ddc27..0000000 --- a/src/crepe/Asset.cpp +++ /dev/null @@ -1,14 +0,0 @@ -#include <filesystem> - -#include "Asset.h" - -using namespace crepe; - -Asset::Asset(const std::string & src) { - this->src = std::filesystem::canonical(src); - this->file = std::ifstream(this->src, std::ios::in | std::ios::binary); -} - -const std::istream & Asset::read() { return this->file; } - -const char * Asset::canonical() { return this->src.c_str(); } diff --git a/src/crepe/Asset.h b/src/crepe/Asset.h deleted file mode 100644 index 0cb5834..0000000 --- a/src/crepe/Asset.h +++ /dev/null @@ -1,33 +0,0 @@ -#pragma once - -#include <fstream> -#include <iostream> -#include <string> - -namespace crepe { - -/** - * \brief Asset location helper - * - * This class is used to locate and canonicalize paths to game asset files, and - * should *always* be used when retrieving files from disk. - */ -class Asset { -public: - /** - * \param src Unique identifier to asset - */ - Asset(const std::string & src); - -public: - //! Get an input stream to the contents of this resource - const std::istream & read(); - //! Get the canonical path to this resource - const char * canonical(); - -private: - std::string src; - std::ifstream file; -}; - -} // namespace crepe diff --git a/src/crepe/CMakeLists.txt b/src/crepe/CMakeLists.txt index d85aef0..6cbb9fe 100644 --- a/src/crepe/CMakeLists.txt +++ b/src/crepe/CMakeLists.txt @@ -1,33 +1,21 @@ target_sources(crepe PUBLIC - Asset.cpp - Sound.cpp - SoundContext.cpp - ComponentManager.cpp + Particle.cpp Component.cpp - GameObject.cpp Collider.cpp - Rigidbody.cpp - Sprite.cpp - ScriptSystem.cpp - Script.cpp + Resource.cpp ) target_sources(crepe PUBLIC FILE_SET HEADERS FILES - Asset.h - Sound.h - SoundContext.h - ComponentManager.h - ComponentManager.hpp Component.h - GameObject.h - GameObject.hpp Collider.h - Rigidbody.h - Sprite.h - System.h - ScriptSystem.h + ValueBroker.h + ValueBroker.hpp + Resource.h ) add_subdirectory(api) +add_subdirectory(facade) +add_subdirectory(manager) +add_subdirectory(system) add_subdirectory(util) diff --git a/src/crepe/Collider.cpp b/src/crepe/Collider.cpp index 3f12afd..77e11c8 100644 --- a/src/crepe/Collider.cpp +++ b/src/crepe/Collider.cpp @@ -2,4 +2,4 @@ using namespace crepe; -Collider::Collider(int size) : size(size) {} +Collider::Collider(game_object_id_t id, const vec2 & offset) : Component(id), offset(offset) {} diff --git a/src/crepe/Collider.h b/src/crepe/Collider.h index 120da05..42ccfd4 100644 --- a/src/crepe/Collider.h +++ b/src/crepe/Collider.h @@ -1,14 +1,23 @@ #pragma once #include "Component.h" +#include "types.h" namespace crepe { class Collider : public Component { public: - Collider(int size); + Collider(game_object_id_t id, const vec2 & offset); - int size; +public: + /** + * \brief Offset of the collider relative to the rigidbody position. + * + * The `offset` defines the positional shift applied to the collider relative to the position of the rigidbody it is attached to. + * This allows the collider to be placed at a different position than the rigidbody. + * + */ + vec2 offset; }; } // namespace crepe diff --git a/src/crepe/Component.cpp b/src/crepe/Component.cpp index 737f30a..ae76e65 100644 --- a/src/crepe/Component.cpp +++ b/src/crepe/Component.cpp @@ -1,4 +1,17 @@ #include "Component.h" using namespace crepe; +using namespace std; +Component::Component(game_object_id_t id) : game_object_id(id) {} + +Component & Component::operator=(const Component & other) { + this->active = other.active; + return *this; +} + +unique_ptr<Component> Component::save() const { + return unique_ptr<Component>(new Component(*this)); +} + +void Component::restore(const Component & snapshot) { *this = snapshot; } diff --git a/src/crepe/Component.h b/src/crepe/Component.h index 00b2164..52e06d5 100644 --- a/src/crepe/Component.h +++ b/src/crepe/Component.h @@ -1,16 +1,79 @@ #pragma once +#include <memory> + +#include "types.h" + namespace crepe { +class ComponentManager; + +/** + * \brief Base class for all components + * + * This class is the base class for all components. It provides a common interface for all + * components. + */ class Component { +public: + //! Whether the component is active + bool active = true; + /** + * \brief The id of the GameObject this component belongs to + * + * \note Only systems are supposed to use this member, but since friend + * relations aren't inherited this needs to be public. + */ + const game_object_id_t game_object_id; + protected: - Component() = default; + /** + * \param id The id of the GameObject this component belongs to + */ + Component(game_object_id_t id); + //! Only ComponentManager can create components + friend class ComponentManager; + + // components are never moved + Component(Component &&) = delete; + virtual Component & operator=(Component &&) = delete; + +protected: + /** + * \name ReplayManager (Memento) functions + * \{ + */ + /** + * \brief Save a snapshot of this component's state + * \note This function should only be implemented on components that should be saved/restored + * by ReplayManager. + * \returns Unique pointer to a deep copy of this component + */ + virtual std::unique_ptr<Component> save() const; + //! Copy constructor (used by \c save()) + Component(const Component &) = default; + /** + * \brief Restore this component from a snapshot + * \param snapshot Data to fill this component with (as returned by \c save()) + */ + virtual void restore(const Component & snapshot); + //! Copy assignment operator (used by \c restore()) + virtual Component & operator=(const Component &); + //! \} + public: virtual ~Component() = default; - // TODO: shouldn't this constructor be deleted because this class will never - // directly be instantiated? - bool active = true; +public: + /** + * \brief Get the maximum number of instances for this component + * + * This method returns -1 by default, which means that there is no limit for the number of + * instances. Concrete components can override this method to set a limit. + * + * \return The maximum number of instances for this component + */ + virtual int get_instances_max() const { return -1; } }; } // namespace crepe diff --git a/src/crepe/ComponentManager.cpp b/src/crepe/ComponentManager.cpp deleted file mode 100644 index 8aa9d4e..0000000 --- a/src/crepe/ComponentManager.cpp +++ /dev/null @@ -1,34 +0,0 @@ -#include "util/log.h" -#include "ComponentManager.h" - -using namespace crepe; - -ComponentManager & ComponentManager::get_instance() { - static ComponentManager instance; - return instance; -} - -void ComponentManager::delete_all_components_of_id(uint32_t id) { - // Loop through all the types (in the unordered_map<>) - for (auto & [type, componentArray] : components) { - // Make sure that the id (that we are looking for) is within the boundaries of the vector<> - if (id < componentArray.size()) { - // Clear the components at this specific id - componentArray[id].clear(); - } - } -} - -void ComponentManager::delete_all_components() { - // Clear the whole unordered_map<> - this->components.clear(); -} - -ComponentManager::ComponentManager() { - dbg_trace(); -} - -ComponentManager::~ComponentManager() { - dbg_trace(); -} - diff --git a/src/crepe/ComponentManager.h b/src/crepe/ComponentManager.h deleted file mode 100644 index eab9b45..0000000 --- a/src/crepe/ComponentManager.h +++ /dev/null @@ -1,63 +0,0 @@ -#pragma once - -#include <cstdint> -#include <memory> -#include <typeindex> -#include <unordered_map> -#include <utility> -#include <vector> - -#include "Component.h" - -namespace crepe { - -class ComponentManager { -public: - // Singleton - static ComponentManager & get_instance(); - ComponentManager(const ComponentManager &) = delete; - ComponentManager(ComponentManager &&) = delete; - ComponentManager & operator=(const ComponentManager &) = delete; - ComponentManager & operator=(ComponentManager &&) = delete; - -public: - //! Add a component of a specific type - template <typename T, typename... Args> - void add_component(uint32_t id, Args &&... args); - //! Deletes all components of a specific type and id - template <typename T> - void delete_components_by_id(uint32_t id); - //! Deletes all components of a specific type - template <typename T> - void delete_components(); - //! Deletes all components of a specific id - void delete_all_components_of_id(uint32_t id); - //! Deletes all components - void delete_all_components(); - - //! Get a vector<> of all components at specific type and id - template <typename T> - std::vector<std::reference_wrapper<T>> - get_components_by_id(uint32_t id) const; - //! Get a vector<> of all components of a specific type - template <typename T> - std::vector<std::reference_wrapper<T>> get_components_by_type() const; - -private: - ComponentManager(); - virtual ~ComponentManager(); - - /* - * The std::unordered_map<std::type_index, std::vector<std::vector<std::unique_ptr<Component>>>> below might seem a bit strange, let me explain this structure: - * The std::unordered_map<> has a key and value. The key is a std::type_index and the value is a std::vector. So, a new std::vector will be created for each new std::type_index. - * The first std::vector<> stores another vector<>. This first vector<> is to bind the entity's id to a component. - * The second std::vector<> stores unique_ptrs. Each component can be gathered via an unique_ptr. This second vector<> allows multiple components of the same std::type_index for one entity (id). - */ - std::unordered_map<std::type_index, - std::vector<std::vector<std::unique_ptr<Component>>>> - components; -}; - -} // namespace crepe - -#include "ComponentManager.hpp" diff --git a/src/crepe/ComponentManager.hpp b/src/crepe/ComponentManager.hpp deleted file mode 100644 index 8fc1cba..0000000 --- a/src/crepe/ComponentManager.hpp +++ /dev/null @@ -1,142 +0,0 @@ -#pragma once - -#include <type_traits> - -#include "ComponentManager.h" - -namespace crepe { - -template <class T, typename... Args> -void ComponentManager::add_component(uint32_t id, Args &&... args) { - using namespace std; - - static_assert(is_base_of<Component, T>::value, "add_component must recieve a derivative class of Component"); - - // Determine the type of T (this is used as the key of the unordered_map<>) - type_index type = typeid(T); - - // Check if this component type is already in the unordered_map<> - if (components.find(type) == components.end()) { - //If not, create a new (empty) vector<> of vector<unique_ptr<Component>> - components[type] = vector<vector<unique_ptr<Component>>>(); - } - - // Resize the vector<> if the id is greater than the current size - if (id >= components[type].size()) { - // Initialize new slots to nullptr (resize does automatically init to nullptr) - components[type].resize(id + 1); - } - - // Create a new component of type T (arguments directly forwarded). The - // constructor must be called by ComponentManager. - T * instance = new T(forward<Args>(args)...); - // store its unique_ptr in the vector<> - components[type][id].push_back(unique_ptr<T>(instance)); -} - -template <typename T> -void ComponentManager::delete_components_by_id(uint32_t id) { - using namespace std; - - // Determine the type of T (this is used as the key of the unordered_map<>) - type_index type = typeid(T); - - // Find the type (in the unordered_map<>) - if (components.find(type) != components.end()) { - // Get the correct vector<> - vector<vector<unique_ptr<Component>>> & component_array - = components[type]; - - // Make sure that the id (that we are looking for) is within the boundaries of the vector<> - if (id < component_array.size()) { - // Clear the whole vector<> of this specific type and id - component_array[id].clear(); - } - } -} - -template <typename T> -void ComponentManager::delete_components() { - // Determine the type of T (this is used as the key of the unordered_map<>) - std::type_index type = typeid(T); - - if (components.find(type) == components.end()) return; - - components[type].clear(); -} - -template <typename T> -std::vector<std::reference_wrapper<T>> -ComponentManager::get_components_by_id(uint32_t id) const { - using namespace std; - - // Determine the type of T (this is used as the key of the unordered_map<>) - type_index type = typeid(T); - - // Create an empty vector<> - vector<reference_wrapper<T>> component_vector; - - if (components.find(type) == components.end()) return component_vector; - - // Get the correct vector<> - const vector<vector<unique_ptr<Component>>> & component_array = components.at(type); - - // Make sure that the id (that we are looking for) is within the boundaries of the vector<> - if (id >= component_array.size()) return component_vector; - - // Loop trough the whole vector<> - for (const unique_ptr<Component> & component_ptr : component_array[id]) { - // Cast the unique_ptr to a raw pointer - T * casted_component = static_cast<T *>(component_ptr.get()); - - if (casted_component == nullptr) continue; - - // Add the dereferenced raw pointer to the vector<> - component_vector.push_back(*casted_component); - } - - return component_vector; -} - -template <typename T> -std::vector<std::reference_wrapper<T>> -ComponentManager::get_components_by_type() const { - using namespace std; - - // Determine the type of T (this is used as the key of the unordered_map<>) - type_index type = typeid(T); - - // Create an empty vector<> - vector<reference_wrapper<T>> component_vector; - // Set the id to 0 (the id will also be stored in the returned vector<>) - // uint32_t id = 0; - - // Find the type (in the unordered_map<>) - if (components.find(type) == components.end()) return component_vector; - - // Get the correct vector<> - const vector<vector<unique_ptr<Component>>> & component_array = components.at(type); - - // Loop through the whole vector<> - for (const vector<unique_ptr<Component>> & component : component_array) { - // Loop trough the whole vector<> - for (const unique_ptr<Component> & component_ptr : component) { - // Cast the unique_ptr to a raw pointer - T * casted_component = static_cast<T *>(component_ptr.get()); - - // Ensure that the cast was successful - if (casted_component == nullptr) continue; - - // Pair the dereferenced raw pointer and the id and add it to the vector<> - component_vector.emplace_back(ref(*casted_component)); - } - - // Increase the id (the id will also be stored in the returned vector<>) - //++id; - } - - // Return the vector<> - return component_vector; -} - -} // namespace crepe diff --git a/src/crepe/GameObject.cpp b/src/crepe/GameObject.cpp deleted file mode 100644 index de3beb6..0000000 --- a/src/crepe/GameObject.cpp +++ /dev/null @@ -1,7 +0,0 @@ -#include "GameObject.h" - -using namespace crepe; - -GameObject::GameObject(uint32_t id, std::string name, std::string tag, - int layer) - : id(id), name(name), tag(tag), active(true), layer(layer) {} diff --git a/src/crepe/GameObject.h b/src/crepe/GameObject.h deleted file mode 100644 index 3588d9a..0000000 --- a/src/crepe/GameObject.h +++ /dev/null @@ -1,24 +0,0 @@ -#pragma once - -#include <cstdint> -#include <string> - -namespace crepe { - -class GameObject { -public: - GameObject(uint32_t id, std::string name, std::string tag, int layer); - - template <typename T, typename... Args> - void add_component(Args &&... args); - - uint32_t id; - std::string name; - std::string tag; - bool active; - int layer; -}; - -} // namespace crepe - -#include "GameObject.hpp" diff --git a/src/crepe/GameObject.hpp b/src/crepe/GameObject.hpp deleted file mode 100644 index 5966fbf..0000000 --- a/src/crepe/GameObject.hpp +++ /dev/null @@ -1,15 +0,0 @@ -#pragma once - -#include "GameObject.h" - -#include "ComponentManager.h" - -namespace crepe { - -template <typename T, typename... Args> -void GameObject::add_component(Args &&... args) { - auto & mgr = ComponentManager::get_instance(); - mgr.add_component<T>(id, std::forward<Args>(args)...); -} - -} // namespace crepe diff --git a/src/crepe/Particle.cpp b/src/crepe/Particle.cpp new file mode 100644 index 0000000..b340826 --- /dev/null +++ b/src/crepe/Particle.cpp @@ -0,0 +1,34 @@ +#include "Particle.h" + +using namespace crepe; + +void Particle::reset(unsigned int lifespan, const vec2 & position, const vec2 & velocity, + float angle) { + // Initialize the particle state + this->time_in_life = 0; + this->lifespan = lifespan; + this->position = position; + this->velocity = velocity; + this->angle = angle; + this->active = true; + // Reset force accumulation + this->force_over_time = {0, 0}; +} + +void Particle::update(double dt) { + // Deactivate particle if it has exceeded its lifespan + time_in_life += dt; + if (time_in_life >= lifespan) { + this->active = false; + return; + } + + // Update velocity based on accumulated force and update position + this->velocity += force_over_time * dt; + this->position += velocity * dt; +} + +void Particle::stop_movement() { + // Reset velocity to halt movement + this->velocity = {0, 0}; +} diff --git a/src/crepe/Particle.h b/src/crepe/Particle.h new file mode 100644 index 0000000..ee0cd66 --- /dev/null +++ b/src/crepe/Particle.h @@ -0,0 +1,63 @@ +#pragma once + +#include <cstdint> + +#include "types.h" + +namespace crepe { + +/** + * \brief Represents a particle in the particle emitter. + * + * This class stores information about a single particle, including its position, velocity, + * lifespan, and other properties. Particles can be updated over time to simulate movement and + * can also be reset or stopped. + */ +class Particle { +public: + //! Position of the particle in 2D space. + vec2 position; + //! Velocity vector indicating the speed and direction of the particle. + vec2 velocity; + //! Accumulated force affecting the particle over time. + vec2 force_over_time; + //! Total lifespan of the particle in milliseconds. + float lifespan; + //! Active state of the particle; true if it is in use, false otherwise. + bool active = false; + //! The time the particle has been alive, in milliseconds. + float time_in_life = 0; + //! The angle at which the particle is oriented or moving. + float angle = 0; + + /** + * \brief Resets the particle with new properties. + * + * This method initializes the particle with a specific lifespan, position, velocity, and + * angle, marking it as active and resetting its life counter. + * + * \param lifespan The lifespan of the particle in amount of updates. + * \param position The starting position of the particle. + * \param velocity The initial velocity of the particle. + * \param angle The angle of the particle's trajectory or orientation. + */ + void reset(unsigned int lifespan, const vec2 & position, const vec2 & velocity, + float angle); + /** + * \brief Updates the particle's state. + * + * Advances the particle's position based on its velocity and applies accumulated forces. + * Deactivates the particle if its lifespan has expired. + * \param dt The amount of fixed delta time that has passed. + */ + void update(double dt); + /** + * \brief Stops the particle's movement. + * + * Sets the particle's velocity to zero, effectively halting any further + * movement. + */ + void stop_movement(); +}; + +} // namespace crepe diff --git a/src/crepe/Position.h b/src/crepe/Position.h new file mode 100644 index 0000000..f84b63d --- /dev/null +++ b/src/crepe/Position.h @@ -0,0 +1,10 @@ +#pragma once + +namespace crepe { + +struct Position { + float x = 0.0; + float y = 0.0; +}; + +} // namespace crepe diff --git a/src/crepe/Resource.cpp b/src/crepe/Resource.cpp new file mode 100644 index 0000000..85913ed --- /dev/null +++ b/src/crepe/Resource.cpp @@ -0,0 +1,6 @@ +#include "Resource.h" +#include "manager/Mediator.h" + +using namespace crepe; + +Resource::Resource(const Asset & asset, Mediator & mediator) {} diff --git a/src/crepe/Resource.h b/src/crepe/Resource.h new file mode 100644 index 0000000..d65206b --- /dev/null +++ b/src/crepe/Resource.h @@ -0,0 +1,30 @@ +#pragma once + +namespace crepe { + +class ResourceManager; +class Asset; +class Mediator; + +/** + * \brief Resource interface + * + * Resource is an interface class used to represent a (deserialized) game resource (e.g. + * textures, sounds). Resources are always created from \ref Asset "assets" by ResourceManager. + * + * The game programmer has the ability to use the ResourceManager to keep instances of concrete + * resources between scenes, preventing them from being reinstantiated during a scene + * transition. + */ +class Resource { +public: + Resource(const Asset & src, Mediator & mediator); + virtual ~Resource() = default; + + Resource(const Resource &) = delete; + Resource(Resource &&) = delete; + Resource & operator=(const Resource &) = delete; + Resource & operator=(Resource &&) = delete; +}; + +} // namespace crepe diff --git a/src/crepe/Rigidbody.cpp b/src/crepe/Rigidbody.cpp deleted file mode 100644 index 495d908..0000000 --- a/src/crepe/Rigidbody.cpp +++ /dev/null @@ -1,6 +0,0 @@ -#include "Rigidbody.h" - -using namespace crepe; - -Rigidbody::Rigidbody(int mass, int gravityScale, int bodyType) - : mass(mass), gravity_scale(gravityScale), body_type(bodyType) {} diff --git a/src/crepe/Rigidbody.h b/src/crepe/Rigidbody.h deleted file mode 100644 index 63a8877..0000000 --- a/src/crepe/Rigidbody.h +++ /dev/null @@ -1,16 +0,0 @@ -#pragma once - -#include "Component.h" - -namespace crepe { - -class Rigidbody : public Component { -public: - Rigidbody(int mass, int gravityScale, int bodyType); - - int mass; - int gravity_scale; - int body_type; -}; - -} // namespace crepe diff --git a/src/crepe/Script.cpp b/src/crepe/Script.cpp deleted file mode 100644 index 42e3666..0000000 --- a/src/crepe/Script.cpp +++ /dev/null @@ -1,7 +0,0 @@ -#include "Script.h" - -using namespace crepe; - -void Script::init() { } -void Script::update() { } - diff --git a/src/crepe/Script.h b/src/crepe/Script.h deleted file mode 100644 index ba4073a..0000000 --- a/src/crepe/Script.h +++ /dev/null @@ -1,16 +0,0 @@ -#pragma once - -namespace crepe { - -class Script { -protected: - virtual void init(); - virtual void update(); - // NOTE: additional *events* (like unity's OnDisable and OnEnable) should be - // implemented as member methods in derivative user script classes and - // registered in init(), otherwise this class will balloon in size with each - // added event. -}; - -} - diff --git a/src/crepe/ScriptSystem.cpp b/src/crepe/ScriptSystem.cpp deleted file mode 100644 index e301c71..0000000 --- a/src/crepe/ScriptSystem.cpp +++ /dev/null @@ -1,22 +0,0 @@ -#include "util/log.h" - -#include "ScriptSystem.h" - -using namespace crepe; - -ScriptSystem::ScriptSystem() { - dbg_trace(); -} -ScriptSystem::~ScriptSystem() { - dbg_trace(); -} - -ScriptSystem & ScriptSystem::get_instance() { - static ScriptSystem instance; - return instance; -} - -void ScriptSystem::update() { - dbg_trace(); -} - diff --git a/src/crepe/ScriptSystem.h b/src/crepe/ScriptSystem.h deleted file mode 100644 index e1ed290..0000000 --- a/src/crepe/ScriptSystem.h +++ /dev/null @@ -1,18 +0,0 @@ -#pragma once - -#include "System.h" - -namespace crepe { - -class ScriptSystem : public System { -public: - static ScriptSystem & get_instance(); - virtual void update(); - -private: - ScriptSystem(); - ~ScriptSystem(); -}; - -} - diff --git a/src/crepe/Sound.cpp b/src/crepe/Sound.cpp deleted file mode 100644 index 64fa281..0000000 --- a/src/crepe/Sound.cpp +++ /dev/null @@ -1,60 +0,0 @@ -#include "util/log.h" - -#include "Sound.h" -#include "SoundContext.h" - -using namespace crepe; - -Sound::Sound(std::unique_ptr<Asset> res) { - dbg_trace(); - this->load(std::move(res)); -} - -Sound::Sound(const char * src) { - dbg_trace(); - this->load(std::make_unique<Asset>(src)); -} - -void Sound::load(std::unique_ptr<Asset> res) { - this->sample.load(res->canonical()); -} - -void Sound::play() { - SoundContext & ctx = SoundContext::get_instance(); - if (ctx.engine.getPause(this->handle)) { - // resume if paused - ctx.engine.setPause(this->handle, false); - } else { - // or start new sound - this->handle = ctx.engine.play(this->sample, this->volume); - ctx.engine.setLooping(this->handle, this->looping); - } -} - -void Sound::pause() { - SoundContext & ctx = SoundContext::get_instance(); - if (ctx.engine.getPause(this->handle)) return; - ctx.engine.setPause(this->handle, true); -} - -void Sound::rewind() { - SoundContext & ctx = SoundContext::get_instance(); - if (!ctx.engine.isValidVoiceHandle(this->handle)) return; - ctx.engine.seek(this->handle, 0); -} - -void Sound::set_volume(float volume) { - this->volume = volume; - - SoundContext & ctx = SoundContext::get_instance(); - if (!ctx.engine.isValidVoiceHandle(this->handle)) return; - ctx.engine.setVolume(this->handle, this->volume); -} - -void Sound::set_looping(bool looping) { - this->looping = looping; - - SoundContext & ctx = SoundContext::get_instance(); - if (!ctx.engine.isValidVoiceHandle(this->handle)) return; - ctx.engine.setLooping(this->handle, this->looping); -} diff --git a/src/crepe/Sound.h b/src/crepe/Sound.h deleted file mode 100644 index b7cfbb8..0000000 --- a/src/crepe/Sound.h +++ /dev/null @@ -1,82 +0,0 @@ -#pragma once - -#include <soloud/soloud.h> -#include <soloud/soloud_wav.h> - -#include <memory> - -#include "Asset.h" - -namespace crepe { - -class Sound { -public: - /** - * \brief Pause this sample - * - * Pauses this sound if it is playing, or does nothing if it is already - * paused. The playhead position is saved, such that calling \c play() after - * this function makes the sound resume. - */ - void pause(); - /** - * \brief Play this sample - * - * Resume playback if this sound is paused, or start from the beginning of - * the sample. - * - * \note This class only saves a reference to the most recent 'voice' of this - * sound. Calling \c play() while the sound is already playing causes - * multiple instances of the sample to play simultaniously. The sample - * started last is the one that is controlled afterwards. - */ - void play(); - /** - * \brief Reset playhead position - * - * Resets the playhead position so that calling \c play() after this function - * makes it play from the start of the sample. If the sound is not paused - * before calling this function, this function will stop playback. - */ - void rewind(); - /** - * \brief Set playback volume / gain - * - * \param volume Volume (0 = muted, 1 = full volume) - */ - void set_volume(float volume); - /** - * \brief Get playback volume / gain - * - * \return Volume - */ - float get_volume() const { return this->volume; } - /** - * \brief Set looping behavior for this sample - * - * \param looping Looping behavior (false = one-shot, true = loop) - */ - void set_looping(bool looping); - /** - * \brief Get looping behavior - * - * \return true if looping, false if one-shot - */ - bool get_looping() const { return this->looping; } - -public: - Sound(const char * src); - Sound(std::unique_ptr<Asset> res); - -private: - void load(std::unique_ptr<Asset> res); - -private: - SoLoud::Wav sample; - SoLoud::handle handle; - - float volume = 1.0f; - bool looping = false; -}; - -} // namespace crepe diff --git a/src/crepe/SoundContext.cpp b/src/crepe/SoundContext.cpp deleted file mode 100644 index 72047d2..0000000 --- a/src/crepe/SoundContext.cpp +++ /dev/null @@ -1,20 +0,0 @@ -#include "util/log.h" - -#include "SoundContext.h" - -using namespace crepe; - -SoundContext & SoundContext::get_instance() { - static SoundContext instance; - return instance; -} - -SoundContext::SoundContext() { - dbg_trace(); - engine.init(); -} - -SoundContext::~SoundContext() { - dbg_trace(); - engine.deinit(); -} diff --git a/src/crepe/SoundContext.h b/src/crepe/SoundContext.h deleted file mode 100644 index d3123d2..0000000 --- a/src/crepe/SoundContext.h +++ /dev/null @@ -1,26 +0,0 @@ -#pragma once - -#include <soloud/soloud.h> - -#include "Sound.h" - -namespace crepe { - -class SoundContext { -private: - SoundContext(); - virtual ~SoundContext(); - - // singleton - static SoundContext & get_instance(); - SoundContext(const SoundContext &) = delete; - SoundContext(SoundContext &&) = delete; - SoundContext & operator=(const SoundContext &) = delete; - SoundContext & operator=(SoundContext &&) = delete; - -private: - SoLoud::Soloud engine; - friend class Sound; -}; - -} // namespace crepe diff --git a/src/crepe/Sprite.cpp b/src/crepe/Sprite.cpp deleted file mode 100644 index a5a5e68..0000000 --- a/src/crepe/Sprite.cpp +++ /dev/null @@ -1,8 +0,0 @@ -#include <string> - -#include "Sprite.h" - -using namespace crepe; -using namespace std; - -Sprite::Sprite(string path) : path(path) {} diff --git a/src/crepe/Sprite.h b/src/crepe/Sprite.h deleted file mode 100644 index 143e702..0000000 --- a/src/crepe/Sprite.h +++ /dev/null @@ -1,16 +0,0 @@ -#pragma once - -#include <string> - -#include "Component.h" - -namespace crepe { - -class Sprite : public Component { -public: - Sprite(std::string path); - - std::string path; -}; - -} // namespace crepe diff --git a/src/crepe/System.h b/src/crepe/System.h deleted file mode 100644 index 3fe3d66..0000000 --- a/src/crepe/System.h +++ /dev/null @@ -1,23 +0,0 @@ -#pragma once - -namespace crepe { - -class System { -public: - static System & get_instance(); - virtual void update() = 0; - -protected: - System() { }; - virtual ~System() { }; - -private: - // singleton - System(const System &) = delete; - System(System &&) = delete; - System & operator=(const System &) = delete; - System & operator=(System &&) = delete; -}; - -} - diff --git a/src/crepe/ValueBroker.h b/src/crepe/ValueBroker.h new file mode 100644 index 0000000..673b660 --- /dev/null +++ b/src/crepe/ValueBroker.h @@ -0,0 +1,41 @@ +#pragma once + +#include <functional> + +namespace crepe { + +/** + * \brief Give reference to value through custom set/get functions + * + * This class can be used to abstract direct access to any arbitrary value through a custom get + * and set function passed to its constructor. Consumers of this type may want to wrap it in a + * \c Proxy so it behaves like a regular variable. + * + * \tparam T Type of the underlying variable + */ +template <typename T> +class ValueBroker { +public: + //! Set the value + virtual void set(const T &); + //! Retrieve the value + virtual const T & get(); + + typedef std::function<void(const T & target)> setter_t; + typedef std::function<const T &()> getter_t; + +private: + setter_t setter; + getter_t getter; + +public: + /** + * \param setter Function that sets the variable + * \param getter Function that retrieves the variable + */ + ValueBroker(const setter_t & setter, const getter_t & getter); +}; + +} // namespace crepe + +#include "ValueBroker.hpp" diff --git a/src/crepe/ValueBroker.hpp b/src/crepe/ValueBroker.hpp new file mode 100644 index 0000000..5c3bed9 --- /dev/null +++ b/src/crepe/ValueBroker.hpp @@ -0,0 +1,22 @@ +#pragma once + +#include "ValueBroker.h" + +namespace crepe { + +template <typename T> +ValueBroker<T>::ValueBroker(const setter_t & setter, const getter_t & getter) + : setter(setter), + getter(getter) {} + +template <typename T> +const T & ValueBroker<T>::get() { + return this->getter(); +} + +template <typename T> +void ValueBroker<T>::set(const T & value) { + this->setter(value); +} + +} // namespace crepe diff --git a/src/crepe/api/AI.cpp b/src/crepe/api/AI.cpp new file mode 100644 index 0000000..2195249 --- /dev/null +++ b/src/crepe/api/AI.cpp @@ -0,0 +1,89 @@ +#include <stdexcept> +#include <type_traits> + +#include "AI.h" +#include "types.h" + +namespace crepe { + +AI::AI(game_object_id_t id, float max_force) : Component(id), max_force(max_force) {} + +void AI::make_circle_path(float radius, const vec2 & center, float start_angle, + bool clockwise) { + if (radius <= 0) { + throw std::runtime_error("Radius must be greater than 0"); + } + + // The step size is determined by the radius (step size is in radians) + float step = RADIUS_TO_STEP / radius; + // Force at least MIN_STEP steps (in case of a small radius) + if (step > 2 * M_PI / MIN_STEP) { + step = 2 * M_PI / MIN_STEP; + } + // The path node distance is determined by the step size and the radius + this->path_node_distance = radius * step * PATH_NODE_DISTANCE_FACTOR; + + if (clockwise) { + for (float i = start_angle; i < 2 * M_PI + start_angle; i += step) { + path.push_back(vec2{static_cast<float>(center.x + radius * cos(i)), + static_cast<float>(center.y + radius * sin(i))}); + } + } else { + for (float i = start_angle; i > start_angle - 2 * M_PI; i -= step) { + path.push_back(vec2{static_cast<float>(center.x + radius * cos(i)), + static_cast<float>(center.y + radius * sin(i))}); + } + } +} + +void AI::make_oval_path(float radius_x, float radius_y, const vec2 & center, float start_angle, + bool clockwise, float rotation) { + if (radius_x <= 0 && radius_y <= 0) { + throw std::runtime_error("Radius must be greater than 0"); + } + + float max_radius = std::max(radius_x, radius_y); + // The step size is determined by the radius (step size is in radians) + float step = RADIUS_TO_STEP / max_radius; + // Force at least MIN_STEP steps (in case of a small radius) + if (step > 2 * M_PI / MIN_STEP) { + step = 2 * M_PI / MIN_STEP; + } + // The path node distance is determined by the step size and the radius + this->path_node_distance = max_radius * step * PATH_NODE_DISTANCE_FACTOR; + + std::function<vec2(vec2, vec2)> rotate_point = [rotation](vec2 point, vec2 center) { + float s = sin(rotation); + float c = cos(rotation); + + // Translate point back to origin + point.x -= center.x; + point.y -= center.y; + + // Rotate point + float xnew = point.x * c - point.y * s; + float ynew = point.x * s + point.y * c; + + // Translate point back + point.x = xnew + center.x; + point.y = ynew + center.y; + + return point; + }; + + if (clockwise) { + for (float i = start_angle; i < 2 * M_PI + start_angle; i += step) { + vec2 point = {static_cast<float>(center.x + radius_x * cos(i)), + static_cast<float>(center.y + radius_y * sin(i))}; + path.push_back(rotate_point(point, center)); + } + } else { + for (float i = start_angle; i > start_angle - 2 * M_PI; i -= step) { + vec2 point = {static_cast<float>(center.x + radius_x * cos(i)), + static_cast<float>(center.y + radius_y * sin(i))}; + path.push_back(rotate_point(point, center)); + } + } +} + +} // namespace crepe diff --git a/src/crepe/api/AI.h b/src/crepe/api/AI.h new file mode 100644 index 0000000..c780a91 --- /dev/null +++ b/src/crepe/api/AI.h @@ -0,0 +1,128 @@ +#pragma once + +#include "Component.h" +#include "types.h" + +namespace crepe { + +/** + * \brief The AI component is used to control the movement of an entity using AI. + * + * The AI component can be used to control the movement of an entity. The AI component can be used + * to implement different behaviors such as seeking, fleeing, arriving, and path following. + */ +class AI : public Component { +public: + //! The different types of behaviors that can be used + enum BehaviorTypeMask { + SEEK = 0x00002, + FLEE = 0x00004, + ARRIVE = 0x00008, + PATH_FOLLOW = 0x00010, + }; + +public: + /** + * \param id The id of the game object + * \param max_force The maximum force that can be applied to the entity + */ + AI(game_object_id_t id, float max_force); + + /** + * \brief Check if a behavior is on (aka activated) + * + * \param behavior The behavior to check + * \return true if the behavior is on, false otherwise + */ + bool on(BehaviorTypeMask behavior) const { return (flags & behavior); } + //! Turn on the seek behavior + void seek_on() { flags |= SEEK; } + //! Turn off the seek behavior + void seek_off() { flags &= ~SEEK; } + //! Turn on the flee behavior + void flee_on() { flags |= FLEE; } + //! Turn off the flee behavior + void flee_off() { flags &= ~FLEE; } + //! Turn on the arrive behavior + void arrive_on() { flags |= ARRIVE; } + //! Turn off the arrive behavior + void arrive_off() { flags &= ~ARRIVE; } + //! Turn on the path follow behavior + void path_follow_on() { flags |= PATH_FOLLOW; } + //! Turn off the path follow behavior + void path_follow_off() { flags &= ~PATH_FOLLOW; } + + /** + * \brief Add a path node (for the path following behavior) + * + * \note The path is not relative to the entity's position (it is an absolute path) + * + * \param node The path node to add + */ + void add_path_node(const vec2 & node) { path.push_back(node); } + /** + * \brief Make a circle path (for the path following behavior) + * + * \note The path is not relative to the entity's position (it is an absolute path) + * + * \param radius The radius of the circle (in game units) + * \param center The center of the circle (in game units) + * \param start_angle The start angle of the circle (in radians) + * \param clockwise The direction of the circle + */ + void make_circle_path(float radius, const vec2 & center = {0, 0}, float start_angle = 0, + bool clockwise = true); + /** + * \brief Make an oval path (for the path following behavior) + * + * \note The path is not relative to the entity's position (it is an absolute path) + * + * \param radius_x The x radius of the oval (in game units) + * \param radius_y The y radius of the oval (in game units) + * \param center The center of the oval (in game units) + * \param start_angle The start angle of the oval (in radians) + * \param clockwise The direction of the oval + * \param rotation The rotation of the oval (in radians) + */ + void make_oval_path(float radius_x, float radius_y, const vec2 & center = {0, 0}, + float start_angle = 0, bool clockwise = true, float rotation = 0); + +public: + //! The maximum force that can be applied to the entity (higher values will make the entity adjust faster) + float max_force; + + //! The target to seek at + vec2 seek_target; + //! The target to arrive at + vec2 arrive_target; + //! The target to flee from + vec2 flee_target; + //! The distance at which the entity will start to flee from the target + float square_flee_panic_distance = 200.0f * 200.0f; + //! The deceleration rate for the arrive behavior (higher values will make the entity decelerate faster (less overshoot)) + float arrive_deceleration = 40.0f; + //! The path to follow (for the path following behavior) + std::vector<vec2> path; + //! The distance from the path node at which the entity will move to the next node (automatically set by make_circle_path()) + float path_node_distance = 400.0f; + //! Looping behavior for the path + bool path_loop = true; + +private: + //! The flags for the behaviors + int flags = 0; + //! The current path index + size_t path_index = 0; + + //! The AISystem is the only class that should access the flags and path_index variables + friend class AISystem; + + //! The minimum amount of steps for the path following behavior + static constexpr int MIN_STEP = 16; + //! The radius to step size ratio for the path following behavior + static constexpr float RADIUS_TO_STEP = 400.0f; + //! The path node distance factor for the path following behavior + static constexpr float PATH_NODE_DISTANCE_FACTOR = 0.75f; +}; + +} // namespace crepe diff --git a/src/crepe/api/Animator.cpp b/src/crepe/api/Animator.cpp new file mode 100644 index 0000000..203cef3 --- /dev/null +++ b/src/crepe/api/Animator.cpp @@ -0,0 +1,57 @@ + +#include "util/dbg.h" + +#include "Animator.h" +#include "Component.h" +#include "Sprite.h" + +using namespace crepe; + +Animator::Animator(game_object_id_t id, Sprite & spritesheet, const ivec2 & single_frame_size, + const uvec2 & grid_size, const Animator::Data & data) + : Component(id), + spritesheet(spritesheet), + grid_size(grid_size), + data(data) { + dbg_trace(); + + this->spritesheet.mask.w = single_frame_size.x; + this->spritesheet.mask.h = single_frame_size.y; + this->spritesheet.mask.x = 0; + this->spritesheet.mask.y = 0; + + this->spritesheet.aspect_ratio + = static_cast<float>(single_frame_size.x) / single_frame_size.y; +} + +Animator::~Animator() { dbg_trace(); } + +void Animator::loop() { this->data.looping = true; } + +void Animator::play() { this->active = true; } + +void Animator::pause() { this->active = false; } + +void Animator::stop() { + this->active = false; + this->data.col = 0; + this->data.row = 0; +} +void Animator::set_fps(int fps) { this->data.fps = fps; } + +void Animator::set_cycle_range(int start, int end) { + this->data.cycle_start = start, this->data.cycle_end = end; +} + +void Animator::set_anim(int col) { + Animator::Data & ctx = this->data; + this->spritesheet.mask.x = ctx.row = 0; + ctx.col = col; + this->spritesheet.mask.y = ctx.col * this->spritesheet.mask.h; +} + +void Animator::next_anim() { + Animator::Data & ctx = this->data; + ctx.row = ctx.row++ % this->grid_size.x; + this->spritesheet.mask.x = ctx.row * this->spritesheet.mask.w; +} diff --git a/src/crepe/api/Animator.h b/src/crepe/api/Animator.h new file mode 100644 index 0000000..5918800 --- /dev/null +++ b/src/crepe/api/Animator.h @@ -0,0 +1,104 @@ +#pragma once + +#include "../types.h" + +#include "Component.h" +#include "Sprite.h" + +namespace crepe { + +class AnimatorSystem; +class SDLContext; + +/** + * \brief The Animator component is used to animate sprites by managing the movement and frame + * changes within a sprite sheet. + * + * This component allows for controlling sprite animation through rows and columns of a sprite + * sheet. It can be used to play animations, loop them, or stop them. + */ +class Animator : public Component { +public: + struct Data { + //! frames per second for animation + unsigned int fps = 1; + //! The current col being animated. + unsigned int col = 0; + //! The current row being animated. + unsigned int row = 0; + //! should the animation loop + bool looping = false; + //! starting frame for cycling + unsigned int cycle_start = 0; + //! end frame for cycling (-1 = use last frame) + int cycle_end = -1; + }; + +public: + //! Animator will repeat the animation + void loop(); + //! starts the animation + void play(); + //! pauses the animation + void pause(); + /** + * \brief stops the animation + * + * sets the active on false and resets all the current rows and columns + */ + void stop(); + /** + * \brief set frames per second + * + * \param fps frames per second + */ + void set_fps(int fps); + /** + * \brief set the range in the row + * + * \param start of row animation + * \param end of row animation + */ + void set_cycle_range(int start, int end); + /** + * \brief select which column to animate from + * + * \param col animation column + */ + void set_anim(int col); + //! will go to the next animaiton of current row + void next_anim(); + +public: + /** + * \brief Constructs an Animator object that will control animations for a sprite sheet. + * + * \param id The unique identifier for the component, typically assigned automatically. + * \param spritesheet the reference to the spritesheet + * \param single_frame_size the width and height in pixels of a single frame inside the + * spritesheet + * \param grid_size the max rows and columns inside the given spritesheet + * \param data extra animation data for more control + * + * This constructor sets up the Animator with the given parameters, and initializes the + * animation system. + */ + Animator(game_object_id_t id, Sprite & spritesheet, const ivec2 & single_frame_size, + const uvec2 & grid_size, const Animator::Data & data); + ~Animator(); // dbg_trace + +public: + Animator::Data data; + +private: + //! A reference to the Sprite sheet containing. + Sprite & spritesheet; + + //! The maximum number of rows and columns inside the spritesheet + const uvec2 grid_size; + + //! Uses the spritesheet + friend AnimatorSystem; +}; + +} // namespace crepe diff --git a/src/crepe/api/Asset.cpp b/src/crepe/api/Asset.cpp new file mode 100644 index 0000000..e148367 --- /dev/null +++ b/src/crepe/api/Asset.cpp @@ -0,0 +1,54 @@ +#include <filesystem> +#include <stdexcept> +#include <whereami.h> + +#include "api/Config.h" + +#include "Asset.h" + +using namespace crepe; +using namespace std; + +Asset::Asset(const string & src) : src(find_asset(src)) {} +Asset::Asset(const char * src) : src(find_asset(src)) {} + +const string & Asset::get_path() const noexcept { return this->src; } + +string Asset::find_asset(const string & src) const { + auto & cfg = Config::get_instance(); + string & root_pattern = cfg.asset.root_pattern; + + // if root_pattern is empty, find_asset must return all paths as-is + if (root_pattern.empty()) return src; + + // absolute paths do not need to be resolved, only canonicalized + filesystem::path path = src; + if (path.is_absolute()) return filesystem::canonical(path); + + // find directory matching root_pattern + filesystem::path root = this->whereami(); + while (1) { + if (filesystem::exists(root / root_pattern)) break; + if (!root.has_parent_path()) + throw runtime_error(format("Asset: Cannot find root pattern ({})", root_pattern)); + root = root.parent_path(); + } + + // join path to root (base directory) and canonicalize + return filesystem::canonical(root / path); +} + +string Asset::whereami() const noexcept { + string path; + size_t path_length = wai_getExecutablePath(NULL, 0, NULL); + path.resize(path_length + 1); // wai writes null byte + wai_getExecutablePath(path.data(), path_length, NULL); + path.resize(path_length); + return path; +} + +bool Asset::operator==(const Asset & other) const noexcept { return this->src == other.src; } + +size_t std::hash<const Asset>::operator()(const Asset & asset) const noexcept { + return std::hash<string>{}(asset.get_path()); +}; diff --git a/src/crepe/api/Asset.h b/src/crepe/api/Asset.h new file mode 100644 index 0000000..bfd0ac7 --- /dev/null +++ b/src/crepe/api/Asset.h @@ -0,0 +1,84 @@ +#pragma once + +#include <string> + +namespace crepe { + +/** + * \brief Asset location helper + * + * This class is used to locate game asset files, and should *always* be used + * instead of reading file paths directly. + */ +class Asset { +public: + /** + * \param src Unique identifier to asset + */ + Asset(const std::string & src); + /** + * \param src Unique identifier to asset + */ + Asset(const char * src); + +public: + /** + * \brief Get the path to this asset + * \return path to this asset + */ + const std::string & get_path() const noexcept; + + /** + * \brief Comparison operator + * \param other Possibly different instance of \c Asset to test equality against + * \return True if \c this and \c other are equal + */ + bool operator==(const Asset & other) const noexcept; + +private: + //! path to asset + const std::string src; + +private: + /** + * \brief Locate asset path, or throw exception if it cannot be found + * + * This function resolves asset locations relative to crepe::Config::root_pattern if it is + * set and \p src is a relative path. If \p src is an absolute path, it is canonicalized. + * This function only returns if the file can be found. + * + * \param src Arbitrary path to resource file + * + * \returns \p src if crepe::Config::root_pattern is empty + * \returns Canonical path to \p src + * + * \throws std::runtime_error if root_pattern cannot be found + * \throws std::filesystem::filesystem_error if the resolved path does not exist + * \throws std::filesystem::filesystem_error if the path cannot be canonicalized + */ + std::string find_asset(const std::string & src) const; + /** + * \returns The path to the current executable + */ + std::string whereami() const noexcept; +}; + +} // namespace crepe + +namespace std { + +//! Hash helper struct +template <> +struct hash<const crepe::Asset> { + /** + * \brief Hash operator for crepe::Asset + * + * This function hashes a crepe::Asset instance, allowing it to be used as a key in an \c + * std::unordered_map. + * + * \returns Hash value + */ + size_t operator()(const crepe::Asset & asset) const noexcept; +}; + +} // namespace std diff --git a/src/crepe/api/AudioSource.cpp b/src/crepe/api/AudioSource.cpp index b512d27..7b05cb1 100644 --- a/src/crepe/api/AudioSource.cpp +++ b/src/crepe/api/AudioSource.cpp @@ -1,22 +1,15 @@ #include "AudioSource.h" -#include "../Sound.h" -#include <memory> +using namespace crepe; +using namespace std; -using namespace crepe::api; - -AudioSource::AudioSource(std::unique_ptr<Asset> audio_clip) { - this->sound = std::make_unique<crepe::Sound>(std::move(audio_clip)); -} - -void AudioSource::play() { return this->play(false); } +AudioSource::AudioSource(game_object_id_t id, const Asset & src) + : Component(id), + source(src) {} void AudioSource::play(bool looping) { - this->sound->set_looping(looping); - this->sound->play(); + this->loop = looping; + this->oneshot_play = true; } -void AudioSource::stop() { - this->sound->pause(); - this->sound->rewind(); -} +void AudioSource::stop() { this->oneshot_stop = true; } diff --git a/src/crepe/api/AudioSource.h b/src/crepe/api/AudioSource.h index 2d26cda..b20e490 100644 --- a/src/crepe/api/AudioSource.h +++ b/src/crepe/api/AudioSource.h @@ -1,41 +1,74 @@ #pragma once -#include <memory> +#include "../Component.h" +#include "../facade/SoundHandle.h" +#include "../types.h" #include "Asset.h" -#include "Component.h" +#include "GameObject.h" namespace crepe { -class Sound; -} -namespace crepe::api { +class AudioSystem; //! Audio source component -class AudioSource : Component { +class AudioSource : public Component { + //! AudioSource components are handled by AudioSystem + friend class AudioSystem; + +protected: + /** + * \param source Sound sample to load + */ + AudioSource(game_object_id_t id, const Asset & source); + //! Only ComponentManager creates components + friend class ComponentManager; + public: - AudioSource(std::unique_ptr<Asset> audio_clip); + // std::unique_ptr needs to be able to destoy this component virtual ~AudioSource() = default; public: - //! Start or resume this audio source - void play(); - void play(bool looping); + //! Start this audio source + void play(bool looping = false); //! Stop this audio source void stop(); public: - //! Sample file location - std::unique_ptr<Asset> audio_clip; - //! TODO: ????? - bool play_on_awake; + //! Play when this component becomes active + bool play_on_awake = false; //! Repeat the current audio clip during playback - bool loop; + bool loop = false; //! Normalized volume (0.0 - 1.0) - float volume; + float volume = 1.0; private: - std::unique_ptr<crepe::Sound> sound; + //! This audio source's clip + const Asset source; + + /** + * \name One-shot state variables + * + * These variables trigger function calls when set to true, and are unconditionally reset on + * every system update. + * + * \{ + */ + //! Play this sample + bool oneshot_play = false; + //! Stop this sample + bool oneshot_stop = false; + //! \} + /** + * \name State diffing variables + * \{ + */ + typeof(active) last_active = false; + typeof(volume) last_volume = volume; + typeof(loop) last_loop = loop; + //! \} + //! This source's voice handle + SoundHandle voice{}; }; -} // namespace crepe::api +} // namespace crepe diff --git a/src/crepe/api/BehaviorScript.cpp b/src/crepe/api/BehaviorScript.cpp index 2dd933e..af7572c 100644 --- a/src/crepe/api/BehaviorScript.cpp +++ b/src/crepe/api/BehaviorScript.cpp @@ -1,10 +1,15 @@ -#include "../util/log.h" - #include "BehaviorScript.h" +#include "Component.h" +#include "GameObject.h" -using namespace crepe::api; +using namespace crepe; -BehaviorScript::BehaviorScript() { - dbg_trace(); -} +BehaviorScript::BehaviorScript(game_object_id_t id, Mediator & mediator) + : Component(id), + mediator(mediator) {} +template <> +BehaviorScript & GameObject::add_component<BehaviorScript>() { + ComponentManager & mgr = this->mediator.component_manager; + return mgr.add_component<BehaviorScript>(this->id, this->mediator); +} diff --git a/src/crepe/api/BehaviorScript.h b/src/crepe/api/BehaviorScript.h index ba60a8c..3909b96 100644 --- a/src/crepe/api/BehaviorScript.h +++ b/src/crepe/api/BehaviorScript.h @@ -1,20 +1,74 @@ #pragma once -#include "../Script.h" +#include <memory> + #include "../Component.h" -namespace crepe::api { +#include "GameObject.h" + +namespace crepe { -class BehaviorScript : public Script, public Component { +class ScriptSystem; +class ComponentManager; +class Script; + +/** + * \brief Script component + * + * This class acts as a (component) wrapper around an instance of (a class derivatived from) \c + * Script. \c BehaviorScript is the only ECS component that stores member function + * implementations as data. + */ +class BehaviorScript : public Component { protected: - // only allow ComponentManager to instantiate scripts + /** + * \param id Parent \c GameObject id + * \param mediator Mediator reference + * + * \note Calls to this constructor (should) always pass through \c GameObject::add_component, + * which has an exception for this specific component type. This was done so the user does + * not have to pass references used within \c Script to each \c BehaviorScript instance. + */ + BehaviorScript(game_object_id_t id, Mediator & mediator); + //! Only ComponentManager is allowed to instantiate BehaviorScript friend class ComponentManager; - BehaviorScript(); + public: - // but allow uniqe_ptr to call the destructor (THIS IS VERY IMPORTANT) - virtual ~BehaviorScript() = default; + /** + * \brief Set the concrete script of this component + * + * \tparam T Concrete script type (derived from \c crepe::Script) + * \tparam Args Arguments for concrete script constructor + * + * \param args Arguments for concrete script constructor (forwarded using perfect forwarding) + * + * \returns Reference to BehaviorScript component (`*this`) + */ + template <class T, typename... Args> + BehaviorScript & set_script(Args &&... args); +protected: + //! Script instance + std::unique_ptr<Script> script = nullptr; + //! ScriptSystem needs direct access to the script instance + friend class ScriptSystem; + +protected: + //! Reference mediator + Mediator & mediator; }; -} +/** + * \brief Add a BehaviorScript component to this game object + * + * The \c BehaviorScript class is the only exception to the ECS harmony, and requires a + * reference to the component manager passed to its constructor in order to function normally. + * This is because the \c BehaviorScript (and \c Script) classes are the only component-related + * classes that store implemented member functions as data. + */ +template <> +BehaviorScript & GameObject::add_component<BehaviorScript>(); + +} // namespace crepe +#include "BehaviorScript.hpp" diff --git a/src/crepe/api/BehaviorScript.hpp b/src/crepe/api/BehaviorScript.hpp new file mode 100644 index 0000000..353d5e2 --- /dev/null +++ b/src/crepe/api/BehaviorScript.hpp @@ -0,0 +1,22 @@ +#pragma once + +#include <type_traits> + +#include "BehaviorScript.h" +#include "Script.h" + +namespace crepe { + +template <class T, typename... Args> +BehaviorScript & BehaviorScript::set_script(Args &&... args) { + static_assert(std::is_base_of<Script, T>::value); + this->script = std::unique_ptr<Script>(new T(std::forward<Args>(args)...)); + + this->script->game_object_id = this->game_object_id; + this->script->active = this->active; + this->script->mediator = this->mediator; + + return *this; +} + +} // namespace crepe diff --git a/src/crepe/api/BoxCollider.cpp b/src/crepe/api/BoxCollider.cpp new file mode 100644 index 0000000..a893d41 --- /dev/null +++ b/src/crepe/api/BoxCollider.cpp @@ -0,0 +1,10 @@ +#include "BoxCollider.h" + +#include "../Collider.h" + +using namespace crepe; + +BoxCollider::BoxCollider(game_object_id_t game_object_id, const vec2 & dimensions, + const vec2 & offset) + : Collider(game_object_id, offset), + dimensions(dimensions) {} diff --git a/src/crepe/api/BoxCollider.h b/src/crepe/api/BoxCollider.h new file mode 100644 index 0000000..d643e7f --- /dev/null +++ b/src/crepe/api/BoxCollider.h @@ -0,0 +1,23 @@ +#pragma once + +#include "../Collider.h" +#include "Vector2.h" +#include "types.h" + +namespace crepe { + +/** + * \brief A class representing a box-shaped collider. + * + * This class is used for collision detection with other colliders (e.g., CircleCollider). + */ +class BoxCollider : public Collider { +public: + BoxCollider(game_object_id_t game_object_id, const vec2 & dimensions, + const vec2 & offset = {0, 0}); + + //! Width and height of the box collider + vec2 dimensions; +}; + +} // namespace crepe diff --git a/src/crepe/api/Button.cpp b/src/crepe/api/Button.cpp new file mode 100644 index 0000000..40153c9 --- /dev/null +++ b/src/crepe/api/Button.cpp @@ -0,0 +1,8 @@ +#include "Button.h" + +namespace crepe { + +Button::Button(game_object_id_t id, const vec2 & dimensions, const vec2 & offset) + : UIObject(id, dimensions, offset) {} + +} // namespace crepe diff --git a/src/crepe/api/Button.h b/src/crepe/api/Button.h new file mode 100644 index 0000000..d42527e --- /dev/null +++ b/src/crepe/api/Button.h @@ -0,0 +1,48 @@ +#pragma once + +#include <functional> + +#include "Event.h" +#include "UIObject.h" + +namespace crepe { + +/** + * \brief Button component. + * + * This component creates a clickable surface at the transform location with the specified width and height. + * + * The Button can be used in scripts by subscribing a EventHandler to the following events: + * - ButtonPressEvent + * - ButtonEnterEvent + * - ButtonExitEvent + * \see EventManager + * + */ +class Button : public UIObject { +public: + /** + * \brief Constructs a Button with the specified game object ID and dimensions. + * + * \param id The unique ID of the game object associated with this button. + * \param dimensions The width and height of the UIObject + * \param offset The offset relative this GameObjects Transform + */ + Button(game_object_id_t id, const vec2 & dimensions, const vec2 & offset); + /** + * \brief Get the maximum number of instances for this component + * + * Since the button Event transfers the GameObject Metadata it will be the same for each button so only one button is allowed per GameObject + * + * \return 1 + */ + virtual int get_instances_max() const { return 1; } + +private: + //! friend relation hover variable + friend class InputSystem; + //! Indicates whether the mouse is currently hovering over the button + bool hover = false; +}; + +} // namespace crepe diff --git a/src/crepe/api/CMakeLists.txt b/src/crepe/api/CMakeLists.txt index 86623de..2bee3fb 100644 --- a/src/crepe/api/CMakeLists.txt +++ b/src/crepe/api/CMakeLists.txt @@ -1,10 +1,57 @@ target_sources(crepe PUBLIC - # AudioSource.cpp + AudioSource.cpp BehaviorScript.cpp + GameObject.cpp + Rigidbody.cpp + ParticleEmitter.cpp + Transform.cpp + Color.cpp + Sprite.cpp + Config.cpp + Metadata.cpp + Camera.cpp + Animator.cpp + BoxCollider.cpp + CircleCollider.cpp + Engine.cpp + Asset.cpp + EventHandler.cpp + Script.cpp + Button.cpp + UIObject.cpp + AI.cpp + Text.cpp + Scene.cpp ) target_sources(crepe PUBLIC FILE_SET HEADERS FILES - # AudioSource.h + AudioSource.h BehaviorScript.h + Config.h + Script.h + Script.hpp + GameObject.h + GameObject.hpp + Rigidbody.h + Sprite.h + Vector2.h + Vector2.hpp + Color.h + Scene.h + Scene.hpp + Metadata.h + Camera.h + Animator.h + BoxCollider.h + CircleCollider.h + EventHandler.h + EventHandler.hpp + Event.h + Engine.h + Engine.hpp + Asset.h + Button.h + UIObject.h + AI.h + Text.h ) - diff --git a/src/crepe/api/Camera.cpp b/src/crepe/api/Camera.cpp new file mode 100644 index 0000000..19a3296 --- /dev/null +++ b/src/crepe/api/Camera.cpp @@ -0,0 +1,18 @@ +#include "util/dbg.h" + +#include "Camera.h" +#include "Component.h" +#include "types.h" + +using namespace crepe; + +Camera::Camera(game_object_id_t id, const ivec2 & screen, const vec2 & viewport_size, + const Data & data) + : Component(id), + screen(screen), + viewport_size(viewport_size), + data(data) { + dbg_trace(); +} + +Camera::~Camera() { dbg_trace(); } diff --git a/src/crepe/api/Camera.h b/src/crepe/api/Camera.h new file mode 100644 index 0000000..54d9a73 --- /dev/null +++ b/src/crepe/api/Camera.h @@ -0,0 +1,67 @@ +#pragma once + +#include "Color.h" +#include "Component.h" +#include "types.h" + +namespace crepe { + +/** + * \class Camera + * \brief Represents a camera component for rendering in the game. + * + * The Camera class defines the view parameters, including background color, aspect ratio, + * position, and zoom level. It controls what part of the game world is visible on the screen. + */ +class Camera : public Component { +public: + struct Data { + /** + * \bg_color background color of the game + * + * This will make the background the same color as the given value. + */ + const Color bg_color = Color::BLACK; + + /** + * \zoom Zooming level of the game + * + * zoom = 1 --> no zoom. + * zoom < 1 --> zoom out + * zoom > 1 --> zoom in + */ + double zoom = 1; + + //! offset postion from the game object transform component + vec2 postion_offset; + }; + +public: + /** + * \brief Constructs a Camera with the specified ID and background color. + * \param id Unique identifier for the camera component. + * \param screen is the actual screen size in pixels + * \param viewport_size is the view of the world in game units + * \param data the camera component data + */ + Camera(game_object_id_t id, const ivec2 & screen, const vec2 & viewport_size, + const Camera::Data & data); + ~Camera(); // dbg_trace only + +public: + Camera::Data data; + + //! screen the display size in pixels ( output resolution ) + const ivec2 screen; + + //! viewport is the area of the world visible through the camera (in world units) + const vec2 viewport_size; + +public: + /** + * \brief Gets the maximum number of camera instances allowed. + * \return Maximum instance count as an integer. + */ + virtual int get_instances_max() const { return 1; } +}; +} // namespace crepe diff --git a/src/crepe/api/CircleCollider.cpp b/src/crepe/api/CircleCollider.cpp new file mode 100644 index 0000000..90ab5e7 --- /dev/null +++ b/src/crepe/api/CircleCollider.cpp @@ -0,0 +1,8 @@ +#include "CircleCollider.h" + +using namespace crepe; + +CircleCollider::CircleCollider(game_object_id_t game_object_id, float radius, + const vec2 & offset) + : Collider(game_object_id, offset), + radius(radius) {} diff --git a/src/crepe/api/CircleCollider.h b/src/crepe/api/CircleCollider.h new file mode 100644 index 0000000..22da836 --- /dev/null +++ b/src/crepe/api/CircleCollider.h @@ -0,0 +1,23 @@ +#pragma once + +#include "Vector2.h" + +#include "../Collider.h" + +namespace crepe { + +/** + * \brief A class representing a circle-shaped collider. + * + * This class is used for collision detection with other colliders (e.g., BoxCollider). + */ +class CircleCollider : public Collider { +public: + CircleCollider(game_object_id_t game_object_id, float radius, + const vec2 & offset = {0, 0}); + + //! Radius of the circle collider. + float radius; +}; + +} // namespace crepe diff --git a/src/crepe/api/Color.cpp b/src/crepe/api/Color.cpp new file mode 100644 index 0000000..29bd77a --- /dev/null +++ b/src/crepe/api/Color.cpp @@ -0,0 +1,12 @@ +#include "Color.h" + +using namespace crepe; + +const Color Color::WHITE{0xff, 0xff, 0xff}; +const Color Color::RED{0xff, 0x00, 0x00}; +const Color Color::GREEN{0x00, 0xff, 0x00}; +const Color Color::BLUE{0x00, 0x00, 0xff}; +const Color Color::BLACK{0x00, 0x00, 0x00}; +const Color Color::CYAN{0x00, 0xff, 0xff}; +const Color Color::YELLOW{0xff, 0xff, 0x00}; +const Color Color::MAGENTA{0xff, 0x00, 0xff}; diff --git a/src/crepe/api/Color.h b/src/crepe/api/Color.h new file mode 100644 index 0000000..84edb5c --- /dev/null +++ b/src/crepe/api/Color.h @@ -0,0 +1,23 @@ +#pragma once + +#include <cstdint> + +namespace crepe { + +struct Color { + uint8_t r = 0x00; + uint8_t g = 0x00; + uint8_t b = 0x00; + uint8_t a = 0xff; + + static const Color WHITE; + static const Color RED; + static const Color GREEN; + static const Color BLUE; + static const Color CYAN; + static const Color MAGENTA; + static const Color YELLOW; + static const Color BLACK; +}; + +} // namespace crepe diff --git a/src/crepe/api/Config.cpp b/src/crepe/api/Config.cpp new file mode 100644 index 0000000..0100bcc --- /dev/null +++ b/src/crepe/api/Config.cpp @@ -0,0 +1,8 @@ +#include "Config.h" + +using namespace crepe; + +Config & Config::get_instance() { + static Config instance; + return instance; +} diff --git a/src/crepe/api/Config.h b/src/crepe/api/Config.h new file mode 100644 index 0000000..6b9e3ca --- /dev/null +++ b/src/crepe/api/Config.h @@ -0,0 +1,103 @@ +#pragma once + +#include <string> + +#include "../util/Log.h" + +#include "types.h" + +namespace crepe { + +/** + * \brief Global configuration interface + * + * This class stores engine default settings. Properties on this class are only supposed to be + * modified *before* execution is handed over from the game programmer to the engine (i.e. the + * main loop is started). + */ +struct Config final { + //! Retrieve handle to global Config instance + static Config & get_instance(); + + //! Logging-related settings + struct { + /** + * \brief Log level + * + * Only messages with equal or higher priority than this value will be logged. + */ + Log::Level level = Log::Level::INFO; + /** + * \brief Colored log output + * + * Enables log coloring using ANSI escape codes. + */ + bool color = true; + } log; + + //! Save manager + struct { + /** + * \brief Save file location + * + * This location is used by the constructor of SaveManager, and should be set before save + * manager functionality is attempted to be used. + */ + std::string location = "save.crepe.db"; + } savemgr; + + //! physics-related settings + struct { + /** + * \brief gravity value of physics system + * + * Gravity value of game. + */ + float gravity = 10; + } physics; + + //! default window settings + struct { + //! default screen size in pixels + ivec2 default_size = {1280, 720}; + std::string window_title = "Jetpack joyride clone"; + } window_settings; + + //! Asset loading options + struct { + /** + * \brief Pattern to match for Asset base directory + * + * All non-absolute paths resolved using \c Asset will be made relative to + * the first parent directory relative to the calling executable where + * appending this pattern results in a path that exists. If this string is + * empty, path resolution is disabled, and Asset will return all paths + * as-is. + */ + std::string root_pattern = ".crepe-root"; + } asset; + //! Default font options + struct { + /** + * \brief Default font size + * + * Using the SDL_ttf library the font size needs to be set when loading the font. + * This config option is the font size at which all fonts will be loaded initially. + * + */ + unsigned int size = 16; + } font; + //! Configuration for click tolerance. + struct { + //! The maximum number of pixels the mouse can move between MouseDown and MouseUp events to be considered a click. + int click_tolerance = 5; + } input; + + //! Audio system settings + struct { + //! Max amount of simultanious voices + unsigned int voices = 32; + } audio; +}; + +} // namespace crepe diff --git a/src/crepe/api/Engine.cpp b/src/crepe/api/Engine.cpp new file mode 100644 index 0000000..2e9d35a --- /dev/null +++ b/src/crepe/api/Engine.cpp @@ -0,0 +1,63 @@ +#include "../util/Log.h" + +#include "Engine.h" + +using namespace crepe; +using namespace std; + +int Engine::main() noexcept { + try { + this->setup(); + } catch (const exception & e) { + Log::logf(Log::Level::ERROR, "Uncaught exception in setup: {}\n", e.what()); + return EXIT_FAILURE; + } + + try { + this->loop(); + } catch (const exception & e) { + Log::logf(Log::Level::ERROR, "Uncaught exception in main loop: {}\n", e.what()); + this->event_manager.trigger_event<ShutDownEvent>(); + } + + return EXIT_SUCCESS; +} + +void Engine::setup() { + this->loop_timer.start(); + this->scene_manager.load_next_scene(); + + this->event_manager.subscribe<ShutDownEvent>([this](const ShutDownEvent & event) { + this->game_running = false; + + // propagate to possible user ShutDownEvent listeners + return false; + }); +} + +void Engine::loop() { + LoopTimerManager & timer = this->loop_timer; + SystemManager & systems = this->system_manager; + + while (this->game_running) { + timer.update(); + + while (timer.get_lag() >= timer.get_fixed_delta_time()) { + try { + systems.fixed_update(); + } catch (const exception & e) { + Log::logf(Log::Level::WARNING, + "Uncaught exception in fixed update function: {}\n", e.what()); + } + timer.advance_fixed_elapsed_time(); + } + + try { + systems.frame_update(); + } catch (const exception & e) { + Log::logf(Log::Level::WARNING, "Uncaught exception in frame update function: {}\n", + e.what()); + } + timer.enforce_frame_rate(); + } +} diff --git a/src/crepe/api/Engine.h b/src/crepe/api/Engine.h new file mode 100644 index 0000000..700a0cd --- /dev/null +++ b/src/crepe/api/Engine.h @@ -0,0 +1,81 @@ +#pragma once + +#include "../facade/SDLContext.h" +#include "../manager/ComponentManager.h" +#include "../manager/EventManager.h" +#include "../manager/LoopTimerManager.h" +#include "../manager/ReplayManager.h" +#include "../manager/ResourceManager.h" +#include "../manager/SaveManager.h" +#include "../manager/SceneManager.h" +#include "../manager/SystemManager.h" + +namespace crepe { + +/** + * \brief Main game entrypoint + * + * This class is responsible for managing the game loop, including initialization and updating. + */ +class Engine { +public: + /** + * \brief Engine entrypoint + * + * This function is called by the game programmer after registering all scenes + * + * \returns process exit code + */ + int main() noexcept; + + //! \copydoc SceneManager::add_scene + template <typename T> + void add_scene(); + +private: + /** + * \brief Setup function for one-time initialization. + * + * This function initializes necessary components for the game. + */ + void setup(); + /** + * \brief Main game loop function. + * + * This function runs the main loop, handling game updates and rendering. + */ + void loop(); + + //! Game loop condition + bool game_running = true; + +private: + //! Global context + Mediator mediator; + + //! SystemManager + SystemManager system_manager{mediator}; + + //! SDLContext instance + SDLContext sdl_context{mediator}; + + //! Resource manager instance + ResourceManager resource_manager{mediator}; + + //! Component manager instance + ComponentManager component_manager{mediator}; + //! Scene manager instance + SceneManager scene_manager{mediator}; + //! LoopTimerManager instance + LoopTimerManager loop_timer{mediator}; + //! EventManager instance + EventManager event_manager{mediator}; + //! Save manager instance + SaveManager save_manager{mediator}; + //! ReplayManager instance + ReplayManager replay_manager{mediator}; +}; + +} // namespace crepe + +#include "Engine.hpp" diff --git a/src/crepe/api/Engine.hpp b/src/crepe/api/Engine.hpp new file mode 100644 index 0000000..f2fdc0a --- /dev/null +++ b/src/crepe/api/Engine.hpp @@ -0,0 +1,12 @@ +#pragma once + +#include "Engine.h" + +namespace crepe { + +template <class T> +void Engine::add_scene() { + this->scene_manager.add_scene<T>(); +} + +} // namespace crepe diff --git a/src/crepe/api/Event.h b/src/crepe/api/Event.h new file mode 100644 index 0000000..8e38280 --- /dev/null +++ b/src/crepe/api/Event.h @@ -0,0 +1,154 @@ +#pragma once +// TODO discussing the location of these events + +#include <string> + +#include "types.h" + +#include "KeyCodes.h" + +namespace crepe { + +/** + * \brief Base class for all event types in the system. + */ +class Event {}; + +/** + * \brief Event triggered when a key is pressed. + */ +class KeyPressEvent : public Event { +public: + //! false if first time press, true if key is repeated + bool repeat = false; + + //! The key that was pressed. + Keycode key = Keycode::NONE; +}; + +/** + * \brief Event triggered when a key is released. + */ +class KeyReleaseEvent : public Event { +public: + //! The key that was released. + Keycode key = Keycode::NONE; +}; + +/** + * \brief Event triggered when a mouse button is pressed. + */ +class MousePressEvent : public Event { +public: + //! mouse position in world coordinates (game units). + vec2 mouse_pos = {0, 0}; + + //! The mouse button that was pressed. + MouseButton button = MouseButton::NONE; +}; + +/** + * \brief Event triggered when a mouse button is clicked (press and release). + */ +class MouseClickEvent : public Event { +public: + //! mouse position in world coordinates (game units). + vec2 mouse_pos = {0, 0}; + + //! The mouse button that was clicked. + MouseButton button = MouseButton::NONE; +}; + +/** + * \brief Event triggered when a mouse button is released. + */ +class MouseReleaseEvent : public Event { +public: + //! mouse position in world coordinates (game units). + vec2 mouse_pos = {0, 0}; + + //! The mouse button that was released. + MouseButton button = MouseButton::NONE; +}; + +/** + * \brief Event triggered when the mouse is moved. + */ +class MouseMoveEvent : public Event { +public: + //! mouse position in world coordinates (game units). + vec2 mouse_pos = {0, 0}; + //! The change in mouse position relative to the last position (in pixels). + ivec2 mouse_delta = {0, 0}; +}; + +/** + * \brief Event triggered when the mouse is moved. + */ +class MouseScrollEvent : public Event { +public: + //! mouse position in world coordinates (game units) when the scroll happened. + vec2 mouse_pos = {0, 0}; + //! scroll direction (-1 = down, 1 = up) + int scroll_direction = 0; + //! scroll amount in y axis (from and away from the person). + float scroll_delta = 0; +}; + +/** + * \brief Event triggered to indicate the application is shutting down. + */ +class ShutDownEvent : public Event {}; + +/** + * \brief Event triggered to indicate the window is overlapped by another window. + * + * When two windows overlap the bottom window gets distorted and that window has to be redrawn. + */ +class WindowExposeEvent : public Event {}; + +/** + * \brief Event triggered to indicate the window is resized. + */ +class WindowResizeEvent : public Event { +public: + //! new window dimensions + ivec2 dimensions = {0, 0}; +}; + +/** + * \brief Event triggered to indicate the window is moved. + */ +class WindowMoveEvent : public Event { +public: + //! The change in position relative to the last position (in pixels). + ivec2 delta_move = {0, 0}; +}; + +/** + * \brief Event triggered to indicate the window is minimized. + */ +class WindowMinimizeEvent : public Event {}; + +/** + * \brief Event triggered to indicate the window is maximized + */ +class WindowMaximizeEvent : public Event {}; + +/** + * \brief Event triggered to indicate the window gained focus + * + * This event is triggered when the window receives focus, meaning it becomes the active window + * for user interaction. + */ +class WindowFocusGainEvent : public Event {}; + +/** + * \brief Event triggered to indicate the window lost focus + * + * This event is triggered when the window loses focus, meaning it is no longer the active window + * for user interaction. + */ +class WindowFocusLostEvent : public Event {}; + +} // namespace crepe diff --git a/src/crepe/api/EventHandler.cpp b/src/crepe/api/EventHandler.cpp new file mode 100644 index 0000000..4dc232f --- /dev/null +++ b/src/crepe/api/EventHandler.cpp @@ -0,0 +1,5 @@ +#include "EventHandler.h" + +using namespace crepe; + +bool IEventHandlerWrapper::exec(const Event & e) { return this->call(e); } diff --git a/src/crepe/api/EventHandler.h b/src/crepe/api/EventHandler.h new file mode 100644 index 0000000..7bb501b --- /dev/null +++ b/src/crepe/api/EventHandler.h @@ -0,0 +1,96 @@ +#pragma once + +#include <functional> +#include <string> + +#include "Event.h" + +namespace crepe { +/** + * \brief A type alias for an event handler function. + * + * The EventHandler is a std::function that takes an EventType reference and returns a boolean value + * indicating whether the event is handled. + * + * \tparam EventType The type of event this handler will handle. + * + * Returning \c false from an event handler results in the event being propogated to other listeners for the same event type, while returning \c true stops propogation altogether. + */ +template <typename EventType> +using EventHandler = std::function<bool(const EventType & e)>; + +/** + * \class IEventHandlerWrapper + * \brief An abstract base class for event handler wrappers. + * + * This class provides the interface for handling events. Derived classes must implement the + * `call()` method to process events + */ +class IEventHandlerWrapper { +public: + /** + * \brief Virtual destructor for IEventHandlerWrapper. + */ + virtual ~IEventHandlerWrapper() = default; + + /** + * \brief Executes the handler with the given event. + * + * This method calls the `call()` method of the derived class, passing the event to the handler. + * + * \param e The event to be processed. + * \return A boolean value indicating whether the event is handled. + */ + bool exec(const Event & e); + +private: + /** + * \brief The method responsible for handling the event. + * + * This method is implemented by derived classes to process the event. + * + * \param e The event to be processed. + * \return A boolean value indicating whether the event is handled. + */ + virtual bool call(const Event & e) = 0; +}; + +/** + * \class EventHandlerWrapper + * \brief A wrapper for event handler functions. + * + * This class wraps an event handler function of a specific event type. It implements the + * `call()` and `get_type()` methods to allow the handler to be executed and its type to be + * queried. + * + * \tparam EventType The type of event this handler will handle. + */ +template <typename EventType> +class EventHandlerWrapper : public IEventHandlerWrapper { +public: + /** + * \brief Constructs an EventHandlerWrapper with a given handler. + * + * The constructor takes an event handler function and stores it in the wrapper. + * + * \param handler The event handler function. + */ + explicit EventHandlerWrapper(const EventHandler<EventType> & handler); + +private: + /** + * \brief Calls the stored event handler with the event. + * + * This method casts the event to the appropriate type and calls the handler. + * + * \param e The event to be handled. + * \return A boolean value indicating whether the event is handled. + */ + bool call(const Event & e) override; + //! The event handler function. + EventHandler<EventType> handler; +}; + +} // namespace crepe + +#include "EventHandler.hpp" diff --git a/src/crepe/api/EventHandler.hpp b/src/crepe/api/EventHandler.hpp new file mode 100644 index 0000000..050e57e --- /dev/null +++ b/src/crepe/api/EventHandler.hpp @@ -0,0 +1,20 @@ +#pragma once + +#include <typeindex> + +#include "EventHandler.h" + +namespace crepe { + +// Implementation of EventHandlerWrapper constructor +template <typename EventType> +EventHandlerWrapper<EventType>::EventHandlerWrapper(const EventHandler<EventType> & handler) + : handler(handler) {} + +// Implementation of EventHandlerWrapper::call +template <typename EventType> +bool EventHandlerWrapper<EventType>::call(const Event & e) { + return this->handler(static_cast<const EventType &>(e)); +} + +} //namespace crepe diff --git a/src/crepe/api/GameObject.cpp b/src/crepe/api/GameObject.cpp new file mode 100644 index 0000000..9b94cad --- /dev/null +++ b/src/crepe/api/GameObject.cpp @@ -0,0 +1,35 @@ +#include "api/Transform.h" + +#include "BehaviorScript.h" +#include "GameObject.h" +#include "Metadata.h" + +using namespace crepe; +using namespace std; + +GameObject::GameObject(Mediator & mediator, game_object_id_t id, const std::string & name, + const std::string & tag, const vec2 & position, double rotation, + double scale) + : id(id), + mediator(mediator), + transform(mediator.component_manager->add_component<Transform>(this->id, position, + rotation, scale)), + metadata(mediator.component_manager->add_component<Metadata>(this->id, name, tag)) {} + +void GameObject::set_parent(const GameObject & parent) { + ComponentManager & mgr = this->mediator.component_manager; + + // Set parent on own Metadata component + RefVector<Metadata> this_metadata = mgr.get_components_by_id<Metadata>(this->id); + this_metadata.at(0).get().parent = parent.id; + + // Add own id to children list of parent's Metadata component + RefVector<Metadata> parent_metadata = mgr.get_components_by_id<Metadata>(parent.id); + parent_metadata.at(0).get().children.push_back(this->id); +} + +void GameObject::set_persistent(bool persistent) { + ComponentManager & mgr = this->mediator.component_manager; + + mgr.set_persistent(this->id, persistent); +} diff --git a/src/crepe/api/GameObject.h b/src/crepe/api/GameObject.h new file mode 100644 index 0000000..572ce3a --- /dev/null +++ b/src/crepe/api/GameObject.h @@ -0,0 +1,86 @@ +#pragma once + +#include <string> + +#include "types.h" + +namespace crepe { + +class Mediator; +class Transform; +class Metadata; + +/** + * \brief Represents a GameObject + * + * This class represents a GameObject. The GameObject class is only used as an interface for + * the game programmer. The actual implementation is done in the ComponentManager. + */ +class GameObject { +private: + /** + * This constructor creates a new GameObject. It creates a new Transform and Metadata + * component and adds them to the ComponentManager. + * + * \param mediator Reference to mediator + * \param id The id of the GameObject + * \param name The name of the GameObject + * \param tag The tag of the GameObject + * \param position The position of the GameObject + * \param rotation The rotation of the GameObject + * \param scale The scale of the GameObject + */ + GameObject(Mediator & mediator, game_object_id_t id, const std::string & name, + const std::string & tag, const vec2 & position, double rotation, double scale); + //! ComponentManager instances GameObject + friend class ComponentManager; + +public: + //! The id of the GameObject + const game_object_id_t id; + //! This entity's transform + Transform & transform; + //! This entity's metadata + Metadata & metadata; + +public: + /** + * \brief Set the parent of this GameObject + * + * This method sets the parent of this GameObject. It sets the parent in the Metadata + * component of this GameObject and adds this GameObject to the children list of the parent + * GameObject. + * + * \param parent The parent GameObject + */ + void set_parent(const GameObject & parent); + /** + * \brief Add a component to the GameObject + * + * This method adds a component to the GameObject. It forwards the arguments to the + * ComponentManager. + * + * \tparam T The type of the component + * \tparam Args The types of the arguments + * \param args The arguments to create the component + * \return The created component + */ + template <typename T, typename... Args> + T & add_component(Args &&... args); + /** + * \brief Components will not be deleted if this method is called + * + * This method sets the persistent flag of the GameObject to true. If the persistent + * flag is set to true, the GameObject will not be deleted when the scene is changed. + * + * \param persistent The persistent flag + */ + void set_persistent(bool persistent = true); + +protected: + Mediator & mediator; +}; + +} // namespace crepe + +#include "GameObject.hpp" diff --git a/src/crepe/api/GameObject.hpp b/src/crepe/api/GameObject.hpp new file mode 100644 index 0000000..69f7d73 --- /dev/null +++ b/src/crepe/api/GameObject.hpp @@ -0,0 +1,15 @@ +#pragma once + +#include "../manager/ComponentManager.h" + +#include "GameObject.h" + +namespace crepe { + +template <typename T, typename... Args> +T & GameObject::add_component(Args &&... args) { + ComponentManager & mgr = this->mediator.component_manager; + return mgr.add_component<T>(this->id, std::forward<Args>(args)...); +} + +} // namespace crepe diff --git a/src/crepe/api/KeyCodes.h b/src/crepe/api/KeyCodes.h new file mode 100644 index 0000000..1b9573a --- /dev/null +++ b/src/crepe/api/KeyCodes.h @@ -0,0 +1,160 @@ +#pragma once + +#include <unordered_map> + +namespace crepe { + +//! Enumeration for mouse button inputs, including standard and extended buttons. +enum class MouseButton { + NONE = 0, //!< No mouse button input. + LEFT_MOUSE = 1, //!< Left mouse button. + RIGHT_MOUSE = 2, //!< Right mouse button. + MIDDLE_MOUSE = 3, //!< Middle mouse button (scroll wheel press). + X1_MOUSE = 4, //!< First extended mouse button. + X2_MOUSE = 5, //!< Second extended mouse button. + SCROLL_UP = 6, //!< Scroll wheel upward movement. + SCROLL_DOWN = 7, //!< Scroll wheel downward movement. +}; + +//! Enumeration for keyboard key inputs, including printable characters, function keys, and keypad keys. +enum class Keycode { + NONE = 0, //!< No key input. + SPACE = 32, //!< Spacebar. + APOSTROPHE = 39, //!< Apostrophe ('). + COMMA = 44, //!< Comma (,). + MINUS = 45, //!< Minus (-). + PERIOD = 46, //!< Period (.). + SLASH = 47, //!< Slash (/). + D0 = 48, //!< Digit 0. + D1 = 49, //!< Digit 1. + D2 = 50, //!< Digit 2. + D3 = 51, //!< Digit 3. + D4 = 52, //!< Digit 4. + D5 = 53, //!< Digit 5. + D6 = 54, //!< Digit 6. + D7 = 55, //!< Digit 7. + D8 = 56, //!< Digit 8. + D9 = 57, //!< Digit 9. + SEMICOLON = 59, //!< Semicolon (;). + EQUAL = 61, //!< Equal sign (=). + A = 65, //!< Key 'A'. + B = 66, //!< Key 'B'. + C = 67, //!< Key 'C'. + D = 68, //!< Key 'D'. + E = 69, //!< Key 'E'. + F = 70, //!< Key 'F'. + G = 71, //!< Key 'G'. + H = 72, //!< Key 'H'. + I = 73, //!< Key 'I'. + J = 74, //!< Key 'J'. + K = 75, //!< Key 'K'. + L = 76, //!< Key 'L'. + M = 77, //!< Key 'M'. + N = 78, //!< Key 'N'. + O = 79, //!< Key 'O'. + P = 80, //!< Key 'P'. + Q = 81, //!< Key 'Q'. + R = 82, //!< Key 'R'. + S = 83, //!< Key 'S'. + T = 84, //!< Key 'T'. + U = 85, //!< Key 'U'. + V = 86, //!< Key 'V'. + W = 87, //!< Key 'W'. + X = 88, //!< Key 'X'. + Y = 89, //!< Key 'Y'. + Z = 90, //!< Key 'Z'. + LEFT_BRACKET = 91, //!< Left bracket ([). + BACKSLASH = 92, //!< Backslash (\). + RIGHT_BRACKET = 93, //!< Right bracket (]). + GRAVE_ACCENT = 96, //!< Grave accent (`). + WORLD1 = 161, //!< Non-US key #1. + WORLD2 = 162, //!< Non-US key #2. + ESCAPE = 256, //!< Escape key. + ENTER = 257, //!< Enter key. + TAB = 258, //!< Tab key. + BACKSPACE = 259, //!< Backspace key. + INSERT = 260, //!< Insert key. + DELETE = 261, //!< Delete key. + RIGHT = 262, //!< Right arrow key. + LEFT = 263, //!< Left arrow key. + DOWN = 264, //!< Down arrow key. + UP = 265, //!< Up arrow key. + PAGE_UP = 266, //!< Page Up key. + PAGE_DOWN = 267, //!< Page Down key. + HOME = 268, //!< Home key. + END = 269, //!< End key. + CAPS_LOCK = 280, //!< Caps Lock key. + SCROLL_LOCK = 281, //!< Scroll Lock key. + NUM_LOCK = 282, //!< Num Lock key. + PRINT_SCREEN = 283, //!< Print Screen key. + PAUSE = 284, //!< Pause key. + /** + * \name Function keys (F1-F25). + * \{ + */ + F1 = 290, + F2 = 291, + F3 = 292, + F4 = 293, + F5 = 294, + F6 = 295, + F7 = 296, + F8 = 297, + F9 = 298, + F10 = 299, + F11 = 300, + F12 = 301, + F13 = 302, + F14 = 303, + F15 = 304, + F16 = 305, + F17 = 306, + F18 = 307, + F19 = 308, + F20 = 309, + F21 = 310, + F22 = 311, + F23 = 312, + F24 = 313, + F25 = 314, + /// \} + /** + * \name Keypad digits and operators. + * \{ + */ + KP0 = 320, + KP1 = 321, + KP2 = 322, + KP3 = 323, + KP4 = 324, + KP5 = 325, + KP6 = 326, + KP7 = 327, + KP8 = 328, + KP9 = 329, + KP_DECIMAL = 330, + KP_DIVIDE = 331, + KP_MULTIPLY = 332, + KP_SUBTRACT = 333, + KP_ADD = 334, + KP_ENTER = 335, + KP_EQUAL = 336, + /// \} + /** + * \name Modifier keys. + * \{ + */ + LEFT_SHIFT = 340, + LEFT_CONTROL = 341, + LEFT_ALT = 342, + LEFT_SUPER = 343, + RIGHT_SHIFT = 344, + RIGHT_CONTROL = 345, + RIGHT_ALT = 346, + RIGHT_SUPER = 347, + /// \} + MENU = 348, //!< Menu key. +}; +//! Typedef for keyboard state. +typedef std::unordered_map<Keycode, bool> keyboard_state_t; +} // namespace crepe diff --git a/src/crepe/api/Metadata.cpp b/src/crepe/api/Metadata.cpp new file mode 100644 index 0000000..d421de5 --- /dev/null +++ b/src/crepe/api/Metadata.cpp @@ -0,0 +1,9 @@ +#include "Metadata.h" + +using namespace crepe; +using namespace std; + +Metadata::Metadata(game_object_id_t id, const string & name, const string & tag) + : Component(id), + name(name), + tag(tag) {} diff --git a/src/crepe/api/Metadata.h b/src/crepe/api/Metadata.h new file mode 100644 index 0000000..f404703 --- /dev/null +++ b/src/crepe/api/Metadata.h @@ -0,0 +1,42 @@ +#pragma once + +#include <string> +#include <vector> + +#include "../Component.h" + +namespace crepe { + +/** + * \brief Metadata component + * + * This class represents the Metadata component. It stores the name, tag, parent and children + * of a GameObject. + */ +class Metadata : public Component { +public: + /** + * \param game_object_id The id of the GameObject this component belongs to + * \param name The name of the GameObject + * \param tag The tag of the GameObject + */ + Metadata(game_object_id_t id, const std::string & name, const std::string & tag); + /** + * \brief Get the maximum number of instances for this component + * + * \return The maximum number of instances for this component + */ + virtual int get_instances_max() const { return 1; } + +public: + //! The name of the GameObject + const std::string name; + //! The tag of the GameObject + const std::string tag; + //! The id of the parent GameObject (-1 if no parent) + game_object_id_t parent = -1; + //! The ids of the children GameObjects + std::vector<game_object_id_t> children; +}; + +} // namespace crepe diff --git a/src/crepe/api/ParticleEmitter.cpp b/src/crepe/api/ParticleEmitter.cpp new file mode 100644 index 0000000..9a70334 --- /dev/null +++ b/src/crepe/api/ParticleEmitter.cpp @@ -0,0 +1,28 @@ +#include "ParticleEmitter.h" +#include "api/Sprite.h" + +using namespace crepe; +using namespace std; + +ParticleEmitter::ParticleEmitter(game_object_id_t game_object_id, const Sprite & sprite, + const Data & data) + : Component(game_object_id), + sprite(sprite), + data(data) { + for (size_t i = 0; i < this->data.max_particles; i++) { + this->particles.emplace_back(); + } +} + +unique_ptr<Component> ParticleEmitter::save() const { + return unique_ptr<Component>{new ParticleEmitter(*this)}; +} + +void ParticleEmitter::restore(const Component & snapshot) { + *this = static_cast<const ParticleEmitter &>(snapshot); +} + +ParticleEmitter & ParticleEmitter::operator=(const ParticleEmitter & other) { + this->particles = other.particles; + return *this; +} diff --git a/src/crepe/api/ParticleEmitter.h b/src/crepe/api/ParticleEmitter.h new file mode 100644 index 0000000..1edd2b5 --- /dev/null +++ b/src/crepe/api/ParticleEmitter.h @@ -0,0 +1,104 @@ +#pragma once + +#include <cmath> +#include <vector> + +#include "system/ParticleSystem.h" +#include "system/RenderSystem.h" + +#include "Component.h" +#include "Particle.h" +#include "types.h" + +namespace crepe { + +class Sprite; + +/** + * \brief Data holder for particle emission parameters. + * + * The ParticleEmitter class stores configuration data for particle properties, defining the + * characteristics and boundaries of particle emissions. + */ +class ParticleEmitter : public Component { +public: + /** + * \brief Defines the boundary within which particles are constrained. + * + * This structure specifies the boundary's size and offset, as well as the behavior of + * particles upon reaching the boundary limits. + */ + struct Boundary { + //! boundary width (midpoint is emitter location) + float width = INFINITY; + //! boundary height (midpoint is emitter location) + float height = INFINITY; + //! boundary offset from particle emitter location + vec2 offset; + //! reset on exit or stop velocity and set max postion + bool reset_on_exit = false; + }; + + //! sprite reference of displayed sprite + const Sprite & sprite; + + /** + * \brief Holds parameters that control particle emission. + * + * Contains settings for the emitter’s position, particle speed, angle, lifespan, boundary, + * and the sprite used for rendering particles. + */ + struct Data { + //! offset of the emitter relative to transform + vec2 offset; + //! maximum number of particles + const unsigned int max_particles = 256; + //! rate of particle emission per second + float emission_rate = 50; + //! min speed of the particles + float min_speed = 100; + //! min speed of the particles + float max_speed = 100; + //! min angle of particle emission + float min_angle = 0; + //! max angle of particle emission + float max_angle = 0; + //! begin Lifespan of particle in seconds (only visual) + float begin_lifespan = 0.0; + //! end Lifespan of particle in seconds + float end_lifespan = 10.0; + //! force over time (physics) + vec2 force_over_time; + //! particle boundary + Boundary boundary; + }; + +public: + /** + * \param game_object_id Identifier for the game object using this emitter. + * \param data Configuration data defining particle properties. + */ + ParticleEmitter(game_object_id_t game_object_id, const Sprite & sprite, const Data & data); + +public: + //! Configuration data for particle emission settings. + Data data; + +protected: + virtual std::unique_ptr<Component> save() const; + ParticleEmitter(const ParticleEmitter &) = default; + virtual void restore(const Component & snapshot); + virtual ParticleEmitter & operator=(const ParticleEmitter &); + +private: + //! Only ParticleSystem can move and read particles + friend ParticleSystem; + //! Only RenderSystem can read particles + friend RenderSystem; + //! Saves time left over from last update event. + float spawn_accumulator = 0; + //! collection of particles + std::vector<Particle> particles; +}; + +} // namespace crepe diff --git a/src/crepe/api/Rigidbody.cpp b/src/crepe/api/Rigidbody.cpp new file mode 100644 index 0000000..8213afb --- /dev/null +++ b/src/crepe/api/Rigidbody.cpp @@ -0,0 +1,13 @@ +#include "Rigidbody.h" + +using namespace crepe; + +crepe::Rigidbody::Rigidbody(game_object_id_t id, const Data & data) + : Component(id), + data(data) {} + +void crepe::Rigidbody::add_force_linear(const vec2 & force) { + this->data.linear_velocity += force; +} + +void crepe::Rigidbody::add_force_angular(float force) { this->data.angular_velocity += force; } diff --git a/src/crepe/api/Rigidbody.h b/src/crepe/api/Rigidbody.h new file mode 100644 index 0000000..6900295 --- /dev/null +++ b/src/crepe/api/Rigidbody.h @@ -0,0 +1,178 @@ +#pragma once + +#include <cmath> +#include <set> + +#include "../Component.h" + +#include "types.h" + +namespace crepe { + +/** + * \brief Rigidbody class + * + * This class is used by the physics sytem and collision system. It configures how to system + * interact with the gameobject for movement and collisions. + */ +class Rigidbody : public Component { +public: + /** + * \brief BodyType enum + * + * This enum provides three bodytypes the physics sytem and collision system use. + */ + enum class BodyType { + //! Does not move (e.g. walls, ground ...) + STATIC, + //! Moves and responds to forces (e.g. player, physics objects ...) + DYNAMIC, + //! Moves but does not respond to forces (e.g. moving platforms ...) + KINEMATIC, + }; + /** + * \brief PhysicsConstraints to constrain movement + * + * This struct configures the movement constraint for this object. If a constraint is enabled + * the systems will not move the object. + */ + struct PhysicsConstraints { + //! Prevent movement along X axis + bool x = false; + //! Prevent movement along Y axis + bool y = false; + //! Prevent rotation + bool rotation = false; + }; + +public: + /** + * \brief struct for Rigidbody data + * + * This struct holds the data for the Rigidbody. + */ + struct Data { + //! objects mass + float mass = 1; + /** + * \brief Gravity scale factor. + * + * The `gravity_scale` controls how much gravity affects the object. It is a multiplier applied to the default + * gravity force, allowing for fine-grained control over how the object responds to gravity. + * + */ + float gravity_scale = 0; + + //! Defines the type of the physics body, which determines how the physics system interacts with the object. + BodyType body_type = BodyType::DYNAMIC; + + /** + * \name Linear (positional) motion + * + * These variables define the linear motion (movement along the position) of an object. + * The linear velocity is applied to the object's position in each update of the PhysicsSystem. + * The motion is affected by the object's linear velocity, its maximum velocity, and a coefficient + * that can scale the velocity over time. + * + * \{ + */ + //! Linear velocity of the object (speed and direction). + vec2 linear_velocity; + //! Maximum linear velocity of the object. This limits the object's speed. + float max_linear_velocity = INFINITY; + //! Linear velocity coefficient. This scales the object's velocity for adjustment or damping. + vec2 linear_velocity_coefficient = {1, 1}; + //! \} + + /** + * \name Angular (rotational) motion + * + * These variables define the angular motion (rotation) of an object. + * The angular velocity determines how quickly the object rotates, while the maximum angular velocity + * sets a limit on the rotation speed. The angular velocity coefficient applies damping or scaling + * to the angular velocity, which can be used to simulate friction or other effects that slow down rotation. + * + * \{ + */ + //! Angular velocity of the object, representing the rate of rotation (in degrees). + float angular_velocity = 0; + //! Maximum angular velocity of the object. This limits the maximum rate of rotation. + float max_angular_velocity = INFINITY; + //! Angular velocity coefficient. This scales the object's angular velocity, typically used for damping. + float angular_velocity_coefficient = 1; + //! \} + + /** + * \brief Movement constraints for an object. + * + * The `PhysicsConstraints` struct defines the constraints that restrict an object's movement + * in certain directions or prevent rotation. These constraints effect only the physics system + * to prevent the object from moving or rotating in specified ways. + * + */ + PhysicsConstraints constraints; + + /** + * \brief Elasticity factor of the material (bounce factor). + * + * The `elasticity_coefficient` controls how much of the object's velocity is retained after a collision. + * It represents the material's ability to bounce or recover velocity upon impact. The coefficient is a value + * above 0.0. + * + */ + float elastisity_coefficient = 0.0; + + /** + * \brief Offset of all colliders relative to the object's transform position. + * + * The `offset` defines a positional shift applied to all colliders associated with the object, relative to the object's + * transform position. This allows for the colliders to be placed at a different position than the object's actual + * position, without modifying the object's transform itself. + * + */ + vec2 offset; + + /** + * \brief Defines the collision layers of a GameObject. + * + * The `collision_layers` specifies the layers that the GameObject will collide with. + * Each element represents a layer ID, and the GameObject will only detect + * collisions with other GameObjects that belong to these layers. + */ + std::set<int> collision_layers = {0}; + }; + +public: + /** + * \param game_object_id id of the gameobject the rigibody is added to. + * \param data struct to configure the rigidbody. + */ + Rigidbody(game_object_id_t id, const Data & data); + //! struct to hold data of rigidbody + Data data; + +public: + /** + * \brief add a linear force to the Rigidbody. + * + * \param force Vector2 that is added to the linear force. + */ + void add_force_linear(const vec2 & force); + /** + * \brief add a angular force to the Rigidbody. + * + * \param force Vector2 that is added to the angular force. + */ + void add_force_angular(float force); + +protected: + /** + * Ensures there is at most one Rigidbody component per entity. + * \return Always returns 1, indicating this constraint. + */ + virtual int get_instances_max() const { return 1; } + //! ComponentManager instantiates all components + friend class ComponentManager; +}; + +} // namespace crepe diff --git a/src/crepe/api/Scene.cpp b/src/crepe/api/Scene.cpp new file mode 100644 index 0000000..ad729d2 --- /dev/null +++ b/src/crepe/api/Scene.cpp @@ -0,0 +1,15 @@ +#include "Scene.h" + +using namespace crepe; + +SaveManager & Scene::get_save_manager() const { return mediator->save_manager; } + +GameObject Scene::new_object(const std::string & name, const std::string & tag, + const vec2 & position, double rotation, double scale) { + // Forward the call to ComponentManager's new_object method + return mediator->component_manager->new_object(name, tag, position, rotation, scale); +} + +void Scene::set_persistent(const Asset & asset, bool persistent) { + mediator->resource_manager->set_persistent(asset, persistent); +} diff --git a/src/crepe/api/Scene.h b/src/crepe/api/Scene.h new file mode 100644 index 0000000..dcca9d4 --- /dev/null +++ b/src/crepe/api/Scene.h @@ -0,0 +1,94 @@ +#pragma once + +#include <string> + +#include "../manager/ComponentManager.h" +#include "../manager/Mediator.h" +#include "../manager/ResourceManager.h" +#include "../util/Log.h" +#include "../util/OptionalRef.h" + +#include "GameObject.h" + +namespace crepe { + +class SceneManager; +class ComponentManager; +class Asset; + +/** + * \brief Represents a Scene + * + * This class represents a Scene. The Scene class is only used as an interface for the game + * programmer. + */ +class Scene { +protected: + // NOTE: This must be the only constructor on Scene, see "Late references" below + Scene() = default; + //! SceneManager instances Scene + friend class SceneManager; + +public: + virtual ~Scene() = default; + +public: + //! Load the scene + virtual void load_scene() = 0; + /** + * \brief Get the scene's name + * \return The scene's name + */ + virtual std::string get_name() const = 0; + + // TODO: Late references should ALWAYS be private! This is currently kept as-is so unit tests + // keep passing, but this reference should not be directly accessible by the user!!! + +private: + /** + * \name Late references + * + * These references are set by SceneManager immediately after calling the constructor of Scene. + * + * \note Scene must have a constructor without arguments so the game programmer doesn't need to + * manually add `using Scene::Scene` to their concrete scene class, if they want to add a + * constructor with arguments (e.g. for passing references to their own concrete Scene classes). + * + * \{ + */ + //! Mediator reference + OptionalRef<Mediator> mediator; + //! \} + +protected: + /** + * \brief Retrieve the reference to the SaveManager instance + * + * \returns A reference to the SaveManager instance held by the Mediator. + */ + SaveManager & get_save_manager() const; + + //! \copydoc ComponentManager::new_object + GameObject new_object(const std::string & name, const std::string & tag = "", + const vec2 & position = {0, 0}, double rotation = 0, + double scale = 1); + + //! \copydoc ResourceManager::set_persistent + void set_persistent(const Asset & asset, bool persistent); + /** + * \name Logging functions + * \see Log + * \{ + */ + //! \copydoc Log::logf + template <class... Args> + void logf(const Log::Level & level, std::format_string<Args...> fmt, Args &&... args); + //! \copydoc Log::logf + template <class... Args> + void logf(std::format_string<Args...> fmt, Args &&... args); + //! \} +}; + +} // namespace crepe + +#include "Scene.hpp" diff --git a/src/crepe/api/Scene.hpp b/src/crepe/api/Scene.hpp new file mode 100644 index 0000000..14635df --- /dev/null +++ b/src/crepe/api/Scene.hpp @@ -0,0 +1,19 @@ +#pragma once + +#include "../util/Log.h" + +#include "Scene.h" + +namespace crepe { + +template <class... Args> +void Scene::logf(const Log::Level & level, std::format_string<Args...> fmt, Args &&... args) { + Log::logf(level, fmt, std::forward<Args>(args)...); +} + +template <class... Args> +void Scene::logf(std::format_string<Args...> fmt, Args &&... args) { + Log::logf(fmt, std::forward<Args>(args)...); +} + +} // namespace crepe diff --git a/src/crepe/api/Script.cpp b/src/crepe/api/Script.cpp new file mode 100644 index 0000000..b147252 --- /dev/null +++ b/src/crepe/api/Script.cpp @@ -0,0 +1,63 @@ +#include <string> + +#include "../facade/SDLContext.h" +#include "../manager/SceneManager.h" + +#include "Script.h" + +using namespace crepe; +using namespace std; + +Script::~Script() { + EventManager & mgr = this->mediator->event_manager; + for (auto id : this->listeners) { + mgr.unsubscribe(id); + } +} + +template <> +void Script::subscribe(const EventHandler<CollisionEvent> & callback) { + this->subscribe_internal(callback, this->game_object_id); +} + +void Script::set_next_scene(const string & name) { + SceneManager & mgr = this->mediator->scene_manager; + mgr.set_next_scene(name); +} + +SaveManager & Script::get_save_manager() const { return this->mediator->save_manager; } + +LoopTimerManager & Script::get_loop_timer() const { return this->mediator->loop_timer; } + +void Script::replay::record_start() { + ReplayManager & mgr = this->mediator->replay_manager; + return mgr.record_start(); +} + +recording_t Script::replay::record_end() { + ReplayManager & mgr = this->mediator->replay_manager; + return mgr.record_end(); +} + +void Script::replay::play(recording_t recording) { + ReplayManager & mgr = this->mediator->replay_manager; + return mgr.play(recording); +} + +void Script::replay::release(recording_t recording) { + ReplayManager & mgr = this->mediator->replay_manager; + return mgr.release(recording); +} + +const keyboard_state_t & Script::get_keyboard_state() const { + SDLContext & sdl_context = this->mediator->sdl_context; + return sdl_context.get_keyboard_state(); +} + +bool Script::get_key_state(Keycode key) const noexcept { + try { + return this->get_keyboard_state().at(key); + } catch (...) { + return false; + } +} diff --git a/src/crepe/api/Script.h b/src/crepe/api/Script.h new file mode 100644 index 0000000..5f68928 --- /dev/null +++ b/src/crepe/api/Script.h @@ -0,0 +1,276 @@ +#pragma once + +#include <vector> + +#include "../api/KeyCodes.h" +#include "../manager/EventManager.h" +#include "../manager/LoopTimerManager.h" +#include "../manager/Mediator.h" +#include "../manager/ReplayManager.h" +#include "../system/CollisionSystem.h" +#include "../types.h" +#include "../util/Log.h" +#include "../util/OptionalRef.h" + +namespace crepe { + +class ScriptSystem; +class BehaviorScript; +class ComponentManager; + +/** + * \brief Script interface + * + * This class is used as a base class for user-defined scripts that can be added to game + * objects using the \c BehaviorScript component. + * + * \note Additional *events* (like Unity's OnDisable and OnEnable) should be implemented as + * member or lambda methods in derivative user script classes and registered in \c init(). + * + * \warning Concrete scripts are allowed do create a custom constructor, but the utility + * functions should not be called inside the constructor as they rely on late references that + * are only available after the constructor returns. + * + * \see feature_script + */ +class Script { +protected: + /** + * \name Interface functions + * \{ + */ + /** + * \brief Script initialization function (empty by default) + * + * This function is called during the ScriptSystem::update() routine *before* + * Script::update() if it (a) has not yet been called and (b) the \c BehaviorScript component + * holding this script instance is active. + */ + virtual void init() {} + /** + * \brief Script fixed update function (empty by default) + * + * \param delta_time Time since last fixed update + * + * \note This function is called during the ScriptSystem::update() routine if the \c + * BehaviorScript component holding this script instance is active. + */ + virtual void fixed_update(duration_t delta_time) {} + /** + * \brief Script frame update function (empty by default) + * + * \param delta_time Time since last frame update + * + * \note This function is called during the ScriptSystem::update() routine if the \c + * BehaviorScript component holding this script instance is active. + */ + virtual void frame_update(duration_t delta_time) {} + //! \} + + //! ScriptSystem calls \c init() and \c update() + friend class crepe::ScriptSystem; + +protected: + /** + * \name Component query functions + * \see ComponentManager + * \{ + */ + /** + * \brief Get single component of type \c T on this game object + * \tparam T Type of component + * \returns Reference to component + * \throws std::runtime_error if this game object does not have a component with type \c T + */ + template <typename T> + T & get_component() const; + /** + * \brief Get all components of type \c T on this game object + * \tparam T Type of component + * \returns List of component references + */ + template <typename T> + RefVector<T> get_components() const; + //! \copydoc ComponentManager::get_components_by_id + template <typename T> + RefVector<T> get_components_by_id(game_object_id_t id) const; + //! \copydoc ComponentManager::get_components_by_name + template <typename T> + RefVector<T> get_components_by_name(const std::string & name) const; + //! \copydoc ComponentManager::get_components_by_tag + template <typename T> + RefVector<T> get_components_by_tag(const std::string & tag) const; + //! \} + + /** + * \name Logging functions + * \see Log + * \{ + */ + //! \copydoc Log::logf + template <class... Args> + void logf(const Log::Level & level, std::format_string<Args...> fmt, Args &&... args); + //! \copydoc Log::logf + template <class... Args> + void logf(std::format_string<Args...> fmt, Args &&... args); + // \} + + /** + * \name Event manager functions + * \see EventManager + * \{ + */ + //! \copydoc EventManager::subscribe + template <typename EventType> + void subscribe(const EventHandler<EventType> & callback, event_channel_t channel); + //! \copydoc EventManager::subscribe + template <typename EventType> + void subscribe(const EventHandler<EventType> & callback); + //! \copydoc EventManager::trigger_event + template <typename EventType> + void trigger_event(const EventType & event = {}, + event_channel_t channel = EventManager::CHANNEL_ALL); + //! \copydoc EventManager::queue_event + template <typename EventType> + void queue_event(const EventType & event = {}, + event_channel_t channel = EventManager::CHANNEL_ALL); + //! \} + + /** + * \name Scene-related functions + * \see SceneManager + * \{ + */ + //! \copydoc SceneManager::set_next_scene + void set_next_scene(const std::string & name); + //! \} + + /** + * \name Save data management functions + * \see SaveManager + * \{ + */ + //! Retrieve SaveManager reference + SaveManager & get_save_manager() const; + //! \} + + /** + * \name Timing functions + * \see LoopTimerManager + * \{ + */ + //! Retrieve LoopTimerManager reference + LoopTimerManager & get_loop_timer() const; + //! \} + + //! Replay management functions + struct replay { // NOLINT + //! \copydoc ReplayManager::record_start + void record_start(); + //! \copydoc ReplayManager::record_end + recording_t record_end(); + //! \copydoc ReplayManager::play + void play(recording_t); + //! \copydoc ReplayManager::release + void release(recording_t); + + private: + OptionalRef<Mediator> & mediator; + replay(OptionalRef<Mediator> & mediator) : mediator(mediator) {} + friend class Script; + } replay{mediator}; + + /** + * \brief Utility function to retrieve the keyboard state + * \see SDLContext::get_keyboard_state + * + * \return current keyboard state map with Keycode as key and bool as value(true = pressed, false = not pressed) + */ + const keyboard_state_t & get_keyboard_state() const; + /** + * \brief Utility function to retrieve a single key state. + * \see SDLContext::get_keyboard_state + * + * \return Keycode state (true if pressed, false if not pressed). + */ + bool get_key_state(Keycode key) const noexcept; + +private: + /** + * \brief Internal subscribe function + * + * This function exists so certain template specializations of Script::subscribe can be + * explicitly deleted, and does the following: + * - Wrap the user-provided callback in a check that tests if the parent BehaviorScript + * component is still active + * - Store the subscriber handle returned by the event manager so this listener is + * automatically unsubscribed at the end of this Script instance's life + * + * \tparam EventType concrete Event class + * \param callback User-provided callback function + * \param channel Event channel (may have been overridden by template specializations) + */ + template <typename EventType> + void subscribe_internal(const EventHandler<EventType> & callback, event_channel_t channel); + +protected: + // NOTE: This must be the only constructor on Script, see "Late references" below + Script() = default; + //! Only \c BehaviorScript instantiates Script + friend class BehaviorScript; + +public: + // std::unique_ptr destroys script + virtual ~Script(); + +private: + Script(const Script &) = delete; + Script(Script &&) = delete; + Script & operator=(const Script &) = delete; + Script & operator=(Script &&) = delete; + +private: + /** + * \name Late references + * + * These references are set by BehaviorScript immediately after calling the constructor of + * Script. + * + * \note Script must have a constructor without arguments so the game programmer doesn't need + * to manually add `using Script::Script` to their concrete script class if they want to + * implement a non-default constructor (e.g. for passing references to their own concrete + * Script classes). + * + * \{ + */ + //! Game object ID of game object parent BehaviorScript is attached to + game_object_id_t game_object_id; + //! Reference to parent component + OptionalRef<bool> active; + //! Mediator reference + OptionalRef<Mediator> mediator; + //! \} + +private: + //! Flag to indicate if \c init() has been called already + bool initialized = false; + //! List of subscribed events + std::vector<subscription_t> listeners; +}; + +/** + * \brief Subscribe to CollisionEvent for the current GameObject + * + * This is a template specialization for Script::subscribe which automatically sets the event + * channel so the callback handler is only called for CollisionEvent events that apply to the + * current GameObject the parent BehaviorScript is attached to. + */ +template <> +void Script::subscribe(const EventHandler<CollisionEvent> & callback); +template <> +void Script::subscribe(const EventHandler<CollisionEvent> & callback, event_channel_t) + = delete; + +} // namespace crepe + +#include "Script.hpp" diff --git a/src/crepe/api/Script.hpp b/src/crepe/api/Script.hpp new file mode 100644 index 0000000..4462a41 --- /dev/null +++ b/src/crepe/api/Script.hpp @@ -0,0 +1,105 @@ +#pragma once + +#include "../manager/ComponentManager.h" +#include "../manager/ReplayManager.h" + +#include "BehaviorScript.h" +#include "Script.h" + +namespace crepe { + +template <typename T> +T & Script::get_component() const { + using namespace std; + RefVector<T> all_components = this->get_components<T>(); + if (all_components.size() < 1) + throw runtime_error( + format("Script: no component found with type = {}", typeid(T).name())); + + return all_components.back().get(); +} + +template <typename T> +RefVector<T> Script::get_components() const { + return this->get_components_by_id<T>(this->game_object_id); +} + +template <class... Args> +void Script::logf(const Log::Level & level, std::format_string<Args...> fmt, Args &&... args) { + Log::logf(level, fmt, std::forward<Args>(args)...); +} + +template <class... Args> +void Script::logf(std::format_string<Args...> fmt, Args &&... args) { + Log::logf(fmt, std::forward<Args>(args)...); +} + +template <typename EventType> +void Script::subscribe_internal(const EventHandler<EventType> & callback, + event_channel_t channel) { + EventManager & mgr = this->mediator->event_manager; + subscription_t listener = mgr.subscribe<EventType>( + [this, callback](const EventType & data) -> bool { + // check if (parent) BehaviorScript component is active + bool & active = this->active; + if (!active) return false; + + // check if replay manager is playing (if initialized) + try { + ReplayManager & replay = this->mediator->replay_manager; + if (replay.get_state() == ReplayManager::PLAYING) return false; + } catch (const std::runtime_error &) { + } + + // call user-provided callback + return callback(data); + }, + channel); + this->listeners.push_back(listener); +} + +template <typename EventType> +void Script::subscribe(const EventHandler<EventType> & callback, event_channel_t channel) { + this->subscribe_internal(callback, channel); +} + +template <typename EventType> +void Script::subscribe(const EventHandler<EventType> & callback) { + this->subscribe_internal(callback, EventManager::CHANNEL_ALL); +} + +template <typename EventType> +void Script::trigger_event(const EventType & event, event_channel_t channel) { + EventManager & mgr = this->mediator->event_manager; + mgr.trigger_event(event, channel); +} + +template <typename EventType> +void Script::queue_event(const EventType & event, event_channel_t channel) { + EventManager & mgr = this->mediator->event_manager; + mgr.queue_event(event, channel); +} + +template <typename T> +RefVector<T> Script::get_components_by_id(game_object_id_t id) const { + Mediator & mediator = this->mediator; + ComponentManager & mgr = mediator.component_manager; + + return mgr.get_components_by_id<T>(id); +} +template <typename T> +RefVector<T> Script::get_components_by_name(const std::string & name) const { + Mediator & mediator = this->mediator; + ComponentManager & mgr = mediator.component_manager; + + return mgr.get_components_by_name<T>(name); +} +template <typename T> +RefVector<T> Script::get_components_by_tag(const std::string & tag) const { + Mediator & mediator = this->mediator; + ComponentManager & mgr = mediator.component_manager; + + return mgr.get_components_by_tag<T>(tag); +} + +} // namespace crepe diff --git a/src/crepe/api/Sprite.cpp b/src/crepe/api/Sprite.cpp new file mode 100644 index 0000000..0107c7b --- /dev/null +++ b/src/crepe/api/Sprite.cpp @@ -0,0 +1,21 @@ +#include <cmath> + +#include "../util/dbg.h" +#include "api/Asset.h" + +#include "Component.h" +#include "Sprite.h" +#include "types.h" + +using namespace std; +using namespace crepe; + +Sprite::Sprite(game_object_id_t id, const Asset & texture, const Sprite::Data & data) + : Component(id), + source(texture), + data(data) { + + dbg_trace(); +} + +Sprite::~Sprite() { dbg_trace(); } diff --git a/src/crepe/api/Sprite.h b/src/crepe/api/Sprite.h new file mode 100644 index 0000000..a2409c2 --- /dev/null +++ b/src/crepe/api/Sprite.h @@ -0,0 +1,114 @@ +#pragma once + +#include "../Component.h" +#include "api/Asset.h" + +#include "Color.h" +#include "types.h" + +namespace crepe { + +class SDLContext; +class Animator; +class AnimatorSystem; + +/** + * \brief Represents a renderable sprite component. + * + * A renderable sprite that can be displayed in the game. It includes a texture, color, and + * flip settings, and is managed in layers with defined sorting orders. + */ +class Sprite : public Component { +public: + //! settings to flip the image + struct FlipSettings { + //! horizantal flip + bool flip_x = false; + //! vertical flip + bool flip_y = false; + }; + + //! Sprite data that does not have to be set in the constructor + struct Data { + /** + * \brief Sprite tint (multiplied) + * + * The sprite texture's pixels are multiplied by this color before being displayed + * (including alpha channel for transparency). + */ + Color color = Color::WHITE; + + //! Flip settings for the sprite + FlipSettings flip; + + //! Layer sorting level of the sprite + const int sorting_in_layer = 0; + + //! Order within the sorting layer + const int order_in_layer = 0; + + /** + * \brief width and height of the sprite in game units + * + * - if exclusively width is specified, the height is calculated using the texture's aspect + * ratio + * - if exclusively height is specified, the width is calculated using the texture's aspect + * ratio + * - if both are specified the texture is streched to fit the specified size + */ + vec2 size = {0, 0}; + + //! independent sprite angle. rotating clockwise direction in degrees + float angle_offset = 0; + + //! independent sprite scale multiplier + float scale_offset = 1; + + //! independent sprite offset position + vec2 position_offset; + }; + +public: + /** + * \param game_id Unique identifier for the game object this sprite belongs to. + * \param texture asset of the image + * \param ctx all the sprite data + */ + Sprite(game_object_id_t id, const Asset & texture, const Data & data); + ~Sprite(); + + //! Texture used for the sprite + const Asset source; + + Data data; + +private: + //! Reads the mask of sprite + friend class SDLContext; + + //! Reads the all the variables plus the mask + friend class Animator; + + //! Reads the all the variables plus the mask + friend class AnimatorSystem; + + /** + * \aspect_ratio the ratio of the sprite image + * + * - this value will only be set by the \c Animator component for the ratio of the Animation + * - if \c Animator component is not added it will not use this ratio (because 0) and will use aspect_ratio of the Asset. + */ + float aspect_ratio = 0; + + struct Rect { + int w = 0; + int h = 0; + int x = 0; + int y = 0; + }; + //! Render area of the sprite this will also be adjusted by the AnimatorSystem if an Animator + // object is present in GameObject. this is in sprite pixels + Rect mask; +}; + +} // namespace crepe diff --git a/src/crepe/api/Text.cpp b/src/crepe/api/Text.cpp new file mode 100644 index 0000000..54a4370 --- /dev/null +++ b/src/crepe/api/Text.cpp @@ -0,0 +1,12 @@ +#include "../facade/FontFacade.h" + +#include "Text.h" + +using namespace crepe; + +Text::Text(game_object_id_t id, const vec2 & dimensions, const vec2 & offset, + const std::string & font_family, const Data & data, const std::string & text) + : UIObject(id, dimensions, offset), + text(text), + data(data), + font_family(font_family) {} diff --git a/src/crepe/api/Text.h b/src/crepe/api/Text.h new file mode 100644 index 0000000..c30dc80 --- /dev/null +++ b/src/crepe/api/Text.h @@ -0,0 +1,66 @@ +#pragma once + +#include <optional> +#include <string> + +#include "../Component.h" + +#include "Asset.h" +#include "Color.h" +#include "UIObject.h" + +namespace crepe { +/** + * \brief Text UIObject component for displaying text + * + * This class can be used to display text on screen. By setting the font_family to a font already stored on the current device it will automatically be loaded in. + */ +class Text : public UIObject { +public: + //! Text data that does not have to be set in the constructor + struct Data { + /** + * \brief fontsize for text rendering + * + * \note this is not the actual font size that is loaded in. + * + * Since SDL_TTF requires the font size when loading in the font it is not possible to switch the font size. + * The default font size that is loaded is set in the Config. + * Instead this value is used to upscale the font texture which can cause blurring or distorted text when upscaling or downscaling too much. + */ + unsigned int font_size = 16; + + //! Layer sorting level of the text + const int sorting_in_layer = 0; + + //! Order within the sorting text + const int order_in_layer = 0; + + //! Label text color. + Color text_color = Color::BLACK; + }; + +public: + /** + * + * \param dimensions Width and height of the UIObject. + * \param offset Offset of the UIObject relative to its transform + * \param text The text to be displayed. + * \param font_family The font style name to be displayed. + * \param data Data struct containing extra text parameters. + * \param font Optional font asset that can be passed or left empty. + */ + Text(game_object_id_t id, const vec2 & dimensions, const vec2 & offset, + const std::string & font_family, const Data & data, const std::string & text = ""); + + //! Label text. + std::string text = ""; + //! font family name + std::string font_family = ""; + //! Font asset variable if this is not set, it will use the font_family to create an asset. + std::optional<Asset> font; + //! Data instance + Data data; +}; + +} // namespace crepe diff --git a/src/crepe/api/Transform.cpp b/src/crepe/api/Transform.cpp new file mode 100644 index 0000000..fcfce14 --- /dev/null +++ b/src/crepe/api/Transform.cpp @@ -0,0 +1,22 @@ +#include "../util/dbg.h" + +#include "Transform.h" + +using namespace crepe; +using namespace std; + +Transform::Transform(game_object_id_t id, const vec2 & point, double rotation, double scale) + : Component(id), + position(point), + rotation(rotation), + scale(scale) { + dbg_trace(); +} + +unique_ptr<Component> Transform::save() const { + return unique_ptr<Component>{new Transform(*this)}; +} + +void Transform::restore(const Component & snapshot) { + *this = static_cast<const Transform &>(snapshot); +} diff --git a/src/crepe/api/Transform.h b/src/crepe/api/Transform.h new file mode 100644 index 0000000..a6f3486 --- /dev/null +++ b/src/crepe/api/Transform.h @@ -0,0 +1,46 @@ +#pragma once + +#include "Component.h" +#include "types.h" + +namespace crepe { + +/** + * \brief Transform component + * + * This class represents the Transform component. It stores the position, rotation and scale of + * a GameObject. + */ +class Transform : public Component { +public: + //! Translation (shift) + vec2 position = {0, 0}; + //! Rotation, in degrees clockwise + float rotation = 0; + //! Multiplication factor + float scale = 0; + +protected: + /** + * \param id The id of the GameObject this component belongs to + * \param point The position of the GameObject + * \param rotation The rotation of the GameObject + * \param scale The scale of the GameObject + */ + Transform(game_object_id_t id, const vec2 & point, double rotation, double scale); + /** + * There is always exactly one transform component per entity + * \return 1 + */ + virtual int get_instances_max() const { return 1; } + //! ComponentManager instantiates all components + friend class ComponentManager; + +protected: + virtual std::unique_ptr<Component> save() const; + Transform(const Transform &) = default; + virtual void restore(const Component & snapshot); + virtual Transform & operator=(const Transform &) = default; +}; + +} // namespace crepe diff --git a/src/crepe/api/UIObject.cpp b/src/crepe/api/UIObject.cpp new file mode 100644 index 0000000..d239b89 --- /dev/null +++ b/src/crepe/api/UIObject.cpp @@ -0,0 +1,8 @@ +#include "UIObject.h" + +using namespace crepe; + +UIObject::UIObject(game_object_id_t id, const vec2 & dimensions, const vec2 & offset) + : Component(id), + dimensions(dimensions), + offset(offset) {} diff --git a/src/crepe/api/UIObject.h b/src/crepe/api/UIObject.h new file mode 100644 index 0000000..f7f4fba --- /dev/null +++ b/src/crepe/api/UIObject.h @@ -0,0 +1,25 @@ +#pragma once + +#include "../Component.h" + +namespace crepe { + +/** + * \brief Represents a UI object in the game, derived from the Component class. + */ +class UIObject : public Component { +public: + /** + * \brief Constructs a UiObject with the specified game object ID. + * \param id The unique ID of the game object associated with this UI object. + * \param dimensions width and height of the UIObject + * \param offset Offset relative to the GameObject Transform + */ + UIObject(game_object_id_t id, const vec2 & dimensions, const vec2 & offset); + //! Width and height of the UIObject + vec2 dimensions; + //! Position offset relative to this GameObjects Transform + vec2 offset; +}; + +} // namespace crepe diff --git a/src/crepe/api/Vector2.h b/src/crepe/api/Vector2.h new file mode 100644 index 0000000..bf9d124 --- /dev/null +++ b/src/crepe/api/Vector2.h @@ -0,0 +1,97 @@ +#pragma once + +namespace crepe { + +//! 2D vector +template <class T> +struct Vector2 { + //! X component of the vector + T x = 0; + //! Y component of the vector + T y = 0; + + //! Subtracts another vector from this vector and returns the result. + Vector2 operator-(const Vector2<T> & other) const; + + //! Subtracts a scalar value from both components of this vector and returns the result. + Vector2 operator-(T scalar) const; + + //! Adds another vector to this vector and returns the result. + Vector2 operator+(const Vector2<T> & other) const; + + //! Adds a scalar value to both components of this vector and returns the result. + Vector2 operator+(T scalar) const; + + //! Multiplies this vector by another vector element-wise and returns the result. + Vector2 operator*(const Vector2<T> & other) const; + + //! Multiplies this vector by a scalar and returns the result. + Vector2 operator*(T scalar) const; + + //! Divides this vector by another vector element-wise and returns the result. + Vector2 operator/(const Vector2<T> & other) const; + + //! Divides this vector by a scalar and returns the result. + Vector2 operator/(T scalar) const; + + //! Adds another vector to this vector and updates this vector. + Vector2 & operator+=(const Vector2<T> & other); + + //! Adds a scalar value to both components of this vector and updates this vector. + Vector2 & operator+=(T other); + + //! Subtracts another vector from this vector and updates this vector. + Vector2 & operator-=(const Vector2<T> & other); + + //! Subtracts a scalar value from both components of this vector and updates this vector. + Vector2 & operator-=(T other); + + //! Multiplies this vector by another vector element-wise and updates this vector. + Vector2 & operator*=(const Vector2<T> & other); + + //! Multiplies this vector by a scalar and updates this vector. + Vector2 & operator*=(T other); + + //! Divides this vector by another vector element-wise and updates this vector. + Vector2 & operator/=(const Vector2<T> & other); + + //! Divides this vector by a scalar and updates this vector. + Vector2 & operator/=(T other); + + //! Returns the negation of this vector. + Vector2 operator-() const; + + //! Checks if this vector is equal to another vector. + bool operator==(const Vector2<T> & other) const; + + //! Checks if this vector is not equal to another vector. + bool operator!=(const Vector2<T> & other) const; + + //! Truncates the vector to a maximum length. + void truncate(T max); + + //! Normalizes the vector (resulting in vector with a length of 1). + void normalize(); + + //! Returns the length of the vector. + T length() const; + + //! Returns the squared length of the vector. + T length_squared() const; + + //! Returns the dot product (inwendig product) of this vector and another vector. + T dot(const Vector2<T> & other) const; + + //! Returns the distance between this vector and another vector. + T distance(const Vector2<T> & other) const; + + //! Returns the squared distance between this vector and another vector. + T distance_squared(const Vector2<T> & other) const; + + //! Returns the perpendicular vector to this vector. + Vector2 perpendicular() const; +}; + +} // namespace crepe + +#include "Vector2.hpp" diff --git a/src/crepe/api/Vector2.hpp b/src/crepe/api/Vector2.hpp new file mode 100644 index 0000000..ff53cb0 --- /dev/null +++ b/src/crepe/api/Vector2.hpp @@ -0,0 +1,166 @@ +#pragma once + +#include <cmath> + +#include "Vector2.h" + +namespace crepe { + +template <class T> +Vector2<T> Vector2<T>::operator-(const Vector2<T> & other) const { + return {x - other.x, y - other.y}; +} + +template <class T> +Vector2<T> Vector2<T>::operator-(T scalar) const { + return {x - scalar, y - scalar}; +} + +template <class T> +Vector2<T> Vector2<T>::operator+(const Vector2<T> & other) const { + return {x + other.x, y + other.y}; +} + +template <class T> +Vector2<T> Vector2<T>::operator+(T scalar) const { + return {x + scalar, y + scalar}; +} + +template <class T> +Vector2<T> Vector2<T>::operator*(const Vector2<T> & other) const { + return {x * other.x, y * other.y}; +} + +template <class T> +Vector2<T> Vector2<T>::operator*(T scalar) const { + return {x * scalar, y * scalar}; +} + +template <class T> +Vector2<T> Vector2<T>::operator/(const Vector2<T> & other) const { + return {x / other.x, y / other.y}; +} + +template <class T> +Vector2<T> Vector2<T>::operator/(T scalar) const { + return {x / scalar, y / scalar}; +} + +template <class T> +Vector2<T> & Vector2<T>::operator+=(const Vector2<T> & other) { + x += other.x; + y += other.y; + return *this; +} + +template <class T> +Vector2<T> & Vector2<T>::operator+=(T other) { + x += other; + y += other; + return *this; +} + +template <class T> +Vector2<T> & Vector2<T>::operator-=(const Vector2<T> & other) { + x -= other.x; + y -= other.y; + return *this; +} + +template <class T> +Vector2<T> & Vector2<T>::operator-=(T other) { + x -= other; + y -= other; + return *this; +} + +template <class T> +Vector2<T> & Vector2<T>::operator*=(const Vector2<T> & other) { + x *= other.x; + y *= other.y; + return *this; +} + +template <class T> +Vector2<T> & Vector2<T>::operator*=(T other) { + x *= other; + y *= other; + return *this; +} + +template <class T> +Vector2<T> & Vector2<T>::operator/=(const Vector2<T> & other) { + x /= other.x; + y /= other.y; + return *this; +} + +template <class T> +Vector2<T> & Vector2<T>::operator/=(T other) { + x /= other; + y /= other; + return *this; +} + +template <class T> +Vector2<T> Vector2<T>::operator-() const { + return {-x, -y}; +} + +template <class T> +bool Vector2<T>::operator==(const Vector2<T> & other) const { + return x == other.x && y == other.y; +} + +template <class T> +bool Vector2<T>::operator!=(const Vector2<T> & other) const { + return !(*this == other); +} + +template <class T> +void Vector2<T>::truncate(T max) { + if (length() > max) { + normalize(); + *this *= max; + } +} + +template <class T> +void Vector2<T>::normalize() { + T len = length(); + if (len > 0) { + *this /= len; + } +} + +template <class T> +T Vector2<T>::length() const { + return std::sqrt(x * x + y * y); +} + +template <class T> +T Vector2<T>::length_squared() const { + return x * x + y * y; +} + +template <class T> +T Vector2<T>::dot(const Vector2<T> & other) const { + return x * other.x + y * other.y; +} + +template <class T> +T Vector2<T>::distance(const Vector2<T> & other) const { + return (*this - other).length(); +} + +template <class T> +T Vector2<T>::distance_squared(const Vector2<T> & other) const { + return (*this - other).length_squared(); +} + +template <class T> +Vector2<T> Vector2<T>::perpendicular() const { + return {-y, x}; +} + +} // namespace crepe diff --git a/src/crepe/facade/CMakeLists.txt b/src/crepe/facade/CMakeLists.txt new file mode 100644 index 0000000..243ae46 --- /dev/null +++ b/src/crepe/facade/CMakeLists.txt @@ -0,0 +1,20 @@ +target_sources(crepe PUBLIC + Sound.cpp + Texture.cpp + SoundContext.cpp + SDLContext.cpp + DB.cpp + FontFacade.cpp + Font.cpp +) + +target_sources(crepe PUBLIC FILE_SET HEADERS FILES + Sound.h + Texture.h + SoundContext.h + SDLContext.h + DB.h + FontFacade.h + Font.h +) + diff --git a/src/crepe/facade/DB.cpp b/src/crepe/facade/DB.cpp new file mode 100644 index 0000000..7a3e473 --- /dev/null +++ b/src/crepe/facade/DB.cpp @@ -0,0 +1,61 @@ +#include <cstring> + +#include "util/dbg.h" + +#include "DB.h" + +using namespace std; +using namespace crepe; + +DB::DB(const string & path) { + dbg_trace(); + int ret; + + // init database struct + libdb::DB * db; + if ((ret = libdb::db_create(&db, NULL, 0)) != 0) + throw runtime_error(format("db_create: {}", libdb::db_strerror(ret))); + this->db = {db, [](libdb::DB * db) { db->close(db, 0); }}; + + // load or create database file + const char * file = path.empty() ? NULL : path.c_str(); + ret = this->db->open(this->db.get(), NULL, file, NULL, libdb::DB_BTREE, DB_CREATE, 0); + if (ret != 0) throw runtime_error(format("db->open: {}", libdb::db_strerror(ret))); +} + +libdb::DBT DB::to_thing(const string & thing) const noexcept { + libdb::DBT thang; + memset(&thang, 0, sizeof(libdb::DBT)); + thang.data = (void *) thing.data(); + thang.size = thing.size(); + return thang; +} + +string DB::get(const string & key) { + libdb::DBT db_key = this->to_thing(key); + libdb::DBT db_val; + memset(&db_val, 0, sizeof(libdb::DBT)); + + int ret = this->db->get(this->db.get(), NULL, &db_key, &db_val, 0); + if (ret == 0) return {static_cast<char *>(db_val.data), db_val.size}; + + string err = format("db->get: {}", libdb::db_strerror(ret)); + if (ret == DB_NOTFOUND) throw out_of_range(err); + else throw runtime_error(err); +} + +void DB::set(const string & key, const string & value) { + libdb::DBT db_key = this->to_thing(key); + libdb::DBT db_val = this->to_thing(value); + int ret = this->db->put(this->db.get(), NULL, &db_key, &db_val, 0); + if (ret != 0) throw runtime_error(format("db->get: {}", libdb::db_strerror(ret))); +} + +bool DB::has(const std::string & key) { + try { + this->get(key); + } catch (std::out_of_range &) { + return false; + } + return true; +} diff --git a/src/crepe/facade/DB.h b/src/crepe/facade/DB.h new file mode 100644 index 0000000..84cdf19 --- /dev/null +++ b/src/crepe/facade/DB.h @@ -0,0 +1,75 @@ +#pragma once + +#include <functional> +#include <memory> +#include <string> + +namespace libdb { +extern "C" { +#include <db.h> +} +} // namespace libdb + +namespace crepe { + +/** + * \brief Berkeley DB facade + * + * Berkeley DB is a simple key-value database that stores arbitrary data as both key and value. + * This facade uses STL strings as keys/values. + */ +class DB { +public: + /** + * \param path The path of the database (created if nonexistant) + * + * \note If \p path is empty, the database is entirely in-memory + */ + DB(const std::string & path = ""); + virtual ~DB() = default; + +public: + /** + * \brief Get a value from the database, or throw an exception + * + * \param key The value key + * + * \return The value + * + * \throws std::out_of_range if value is not found in DB + * \throws std::runtime_error if other error occurs + */ + std::string get(const std::string & key); + /** + * \brief Set (create or overwrite) a value in the database + * + * \param key The value key + * \param value The value to store + * + * \throws std::runtime_error if an error occurs + */ + void set(const std::string & key, const std::string & value); + /** + * \brief Check if a key exists in the database + * + * \param key The value key + * + * \returns True if the key exists, or false if it does not + */ + bool has(const std::string & key); + +private: + //! RAII wrapper around \c DB struct + std::unique_ptr<libdb::DB, std::function<void(libdb::DB *)>> db; + +private: + /** + * \brief Convert an STL string to DBT (data base thang) + * + * \param thing Input data + * \return \c DBT with the same data as input \c thing + */ + libdb::DBT to_thing(const std::string & thing) const noexcept; +}; + +} // namespace crepe diff --git a/src/crepe/facade/EventData.h b/src/crepe/facade/EventData.h new file mode 100644 index 0000000..a7526b4 --- /dev/null +++ b/src/crepe/facade/EventData.h @@ -0,0 +1,54 @@ +#pragma once +#include "../api/KeyCodes.h" +#include "../types.h" +namespace crepe { +//! EventType enum for passing eventType +enum EventType { + NONE = 0, + MOUSE_DOWN, + MOUSE_UP, + MOUSE_MOVE, + MOUSE_WHEEL, + KEY_UP, + KEY_DOWN, + SHUTDOWN, + WINDOW_MINIMIZE, + WINDOW_MAXIMIZE, + WINDOW_FOCUS_GAIN, + WINDOW_FOCUS_LOST, + WINDOW_MOVE, + WINDOW_RESIZE, + WINDOW_EXPOSE, +}; + +//! Struct for storing key data. +struct KeyData { + Keycode key = Keycode::NONE; + bool key_repeat = false; +}; + +//! Struct for storing mouse data. +struct MouseData { + MouseButton mouse_button = MouseButton::NONE; + ivec2 mouse_position = {-1, -1}; + int scroll_direction = -1; + float scroll_delta = INFINITY; + ivec2 rel_mouse_move = {-1, -1}; +}; + +//! Struct for storing window data. +struct WindowData { + ivec2 move_delta; + ivec2 resize_dimension; +}; + +//! EventData struct for passing event data from facade +struct EventData { + EventType event_type = EventType::NONE; + union { + KeyData key_data; + MouseData mouse_data; + WindowData window_data; + } data; +}; +} // namespace crepe diff --git a/src/crepe/facade/Font.cpp b/src/crepe/facade/Font.cpp new file mode 100644 index 0000000..771002f --- /dev/null +++ b/src/crepe/facade/Font.cpp @@ -0,0 +1,21 @@ +#include <SDL2/SDL_ttf.h> + +#include "../api/Asset.h" +#include "../api/Config.h" + +#include "Font.h" + +using namespace std; +using namespace crepe; + +Font::Font(const Asset & src, Mediator & mediator) : Resource(src, mediator) { + const Config & config = Config::get_instance(); + const std::string FONT_PATH = src.get_path(); + TTF_Font * loaded_font = TTF_OpenFont(FONT_PATH.c_str(), config.font.size); + if (loaded_font == NULL) { + throw runtime_error(format("Font: {} (path: {})", TTF_GetError(), FONT_PATH)); + } + this->font = {loaded_font, [](TTF_Font * close_font) { TTF_CloseFont(close_font); }}; +} + +TTF_Font * Font::get_font() const { return this->font.get(); } diff --git a/src/crepe/facade/Font.h b/src/crepe/facade/Font.h new file mode 100644 index 0000000..b208d96 --- /dev/null +++ b/src/crepe/facade/Font.h @@ -0,0 +1,42 @@ +#pragma once + +#include <SDL2/SDL_ttf.h> +#include <memory> + +#include "../Resource.h" +#include "../api/Config.h" + +namespace crepe { + +class Asset; +/** + * \brief Resource for managing font creation and destruction + * + * This class is a wrapper around an SDL_ttf font instance, encapsulating font loading and usage. + * It loads a font from an Asset and manages its lifecycle. The font is automatically unloaded + * when this object is destroyed. + */ +class Font : public Resource { + +public: + /** + * \param src The Asset containing the font file path and metadata to load the font. + * \param mediator The Mediator object used for managing the SDL context or related systems. + */ + Font(const Asset & src, Mediator & mediator); + /** + * \brief Gets the underlying TTF_Font resource. + * + * This function returns the raw pointer to the SDL_ttf TTF_Font object that represents + * the loaded font. This can be used with SDL_ttf functions to render text. + * + * \return The raw TTF_Font object wrapped in a unique pointer. + */ + TTF_Font * get_font() const; + +private: + //! The SDL_ttf font object with custom deleter. + std::unique_ptr<TTF_Font, std::function<void(TTF_Font *)>> font = nullptr; +}; + +} // namespace crepe diff --git a/src/crepe/facade/FontFacade.cpp b/src/crepe/facade/FontFacade.cpp new file mode 100644 index 0000000..87f95ab --- /dev/null +++ b/src/crepe/facade/FontFacade.cpp @@ -0,0 +1,43 @@ +#include <fontconfig/fontconfig.h> +#include <functional> +#include <memory> +#include <stdexcept> +#include <string> + +#include "FontFacade.h" + +using namespace std; +using namespace crepe; + +FontFacade::FontFacade() { + if (!FcInit()) throw runtime_error("Failed to initialize Fontconfig."); +} + +FontFacade::~FontFacade() { FcFini(); } + +Asset FontFacade::get_font_asset(const string & font_family) { + FcPattern * raw_pattern + = FcNameParse(reinterpret_cast<const FcChar8 *>(font_family.c_str())); + if (raw_pattern == NULL) throw runtime_error("Failed to create font pattern."); + + unique_ptr<FcPattern, function<void(FcPattern *)>> pattern{ + raw_pattern, [](FcPattern * p) { FcPatternDestroy(p); }}; + + FcConfig * config = FcConfigGetCurrent(); + if (config == NULL) throw runtime_error("Failed to get current Fontconfig configuration."); + + FcResult result; + FcPattern * raw_matched_pattern = FcFontMatch(config, pattern.get(), &result); + if (raw_matched_pattern == NULL) throw runtime_error("No matching font found."); + + unique_ptr<FcPattern, function<void(FcPattern *)>> matched_pattern + = {raw_matched_pattern, [](FcPattern * p) { FcPatternDestroy(p); }}; + + FcChar8 * file_path = nullptr; + FcResult res = FcPatternGetString(matched_pattern.get(), FC_FILE, 0, &file_path); + if (res != FcResultMatch || file_path == NULL) + throw runtime_error("Failed to get font file path."); + + string font_file_path = reinterpret_cast<const char *>(file_path); + return Asset(font_file_path); +} diff --git a/src/crepe/facade/FontFacade.h b/src/crepe/facade/FontFacade.h new file mode 100644 index 0000000..9761070 --- /dev/null +++ b/src/crepe/facade/FontFacade.h @@ -0,0 +1,34 @@ +#pragma once + +#include <memory> + +#include "../api/Asset.h" + +namespace crepe { + +/** + * + * \brief Font facade class for converting font family names to absolute file paths + * + */ +class FontFacade { +public: + FontFacade(); + ~FontFacade(); + FontFacade(const FontFacade & other) = delete; + FontFacade & operator=(const FontFacade & other) = delete; + FontFacade(FontFacade && other) noexcept = delete; + FontFacade & operator=(FontFacade && other) noexcept = delete; + /** + * + * \brief Facade function to convert a font_family into an asset. + * + * This function uses the FontConfig library to convert a font family name (Arial, Inter, Helvetica) and converts it to the font source path. + * This function returns a default font path if the font_family name doesnt exist or cant be found + * \param font_family Name of the font family name. + * \return Asset with filepath to the corresponding font. + */ + Asset get_font_asset(const std::string & font_family); +}; + +} // namespace crepe diff --git a/src/crepe/facade/SDLContext.cpp b/src/crepe/facade/SDLContext.cpp new file mode 100644 index 0000000..9486ccd --- /dev/null +++ b/src/crepe/facade/SDLContext.cpp @@ -0,0 +1,419 @@ +#include <SDL2/SDL.h> +#include <SDL2/SDL_blendmode.h> +#include <SDL2/SDL_image.h> +#include <SDL2/SDL_keycode.h> +#include <SDL2/SDL_pixels.h> +#include <SDL2/SDL_rect.h> +#include <SDL2/SDL_render.h> +#include <SDL2/SDL_surface.h> +#include <SDL2/SDL_ttf.h> +#include <SDL2/SDL_video.h> +#include <array> +#include <cmath> +#include <cstddef> +#include <cstdint> +#include <functional> +#include <memory> +#include <stdexcept> + +#include "../api/Camera.h" +#include "../api/Color.h" +#include "../api/Config.h" +#include "../api/Sprite.h" +#include "../util/dbg.h" +#include "manager/Mediator.h" + +#include "SDLContext.h" +#include "Texture.h" +#include "types.h" + +using namespace crepe; +using namespace std; + +SDLContext::SDLContext(Mediator & mediator) { + dbg_trace(); + if (TTF_Init() == -1) { + throw runtime_error(format("SDL_ttf initialization failed: {}", TTF_GetError())); + } + if (SDL_Init(SDL_INIT_VIDEO) != 0) { + throw runtime_error(format("SDLContext: SDL_Init error: {}", SDL_GetError())); + } + + auto & cfg = Config::get_instance().window_settings; + SDL_Window * tmp_window + = SDL_CreateWindow(cfg.window_title.c_str(), SDL_WINDOWPOS_CENTERED, + SDL_WINDOWPOS_CENTERED, cfg.default_size.x, cfg.default_size.y, 0); + if (!tmp_window) { + throw runtime_error(format("SDLContext: SDL_Window error: {}", SDL_GetError())); + } + this->game_window = {tmp_window, [](SDL_Window * window) { SDL_DestroyWindow(window); }}; + + SDL_Renderer * tmp_renderer + = SDL_CreateRenderer(this->game_window.get(), -1, SDL_RENDERER_ACCELERATED); + if (!tmp_renderer) { + throw runtime_error( + format("SDLContext: SDL_CreateRenderer error: {}", SDL_GetError())); + } + + this->game_renderer + = {tmp_renderer, [](SDL_Renderer * renderer) { SDL_DestroyRenderer(renderer); }}; + + int img_flags = IMG_INIT_PNG; + if (!(IMG_Init(img_flags) & img_flags)) { + throw runtime_error("SDLContext: SDL_image could not initialize!"); + } + + mediator.sdl_context = *this; +} + +SDLContext::~SDLContext() { + dbg_trace(); + + this->game_renderer.reset(); + this->game_window.reset(); + + // TODO: how are we going to ensure that these are called from the same + // thread that SDL_Init() was called on? This has caused problems for me + // before. + IMG_Quit(); + TTF_Quit(); + SDL_Quit(); +} + +Keycode SDLContext::sdl_to_keycode(SDL_Scancode sdl_key) { + if (!lookup_table.contains(sdl_key)) return Keycode::NONE; + return lookup_table.at(sdl_key); +} + +const keyboard_state_t & SDLContext::get_keyboard_state() { + SDL_PumpEvents(); + const Uint8 * current_state = SDL_GetKeyboardState(nullptr); + + for (int i = 0; i < SDL_NUM_SCANCODES; ++i) { + + Keycode key = sdl_to_keycode(static_cast<SDL_Scancode>(i)); + if (key != Keycode::NONE) { + this->keyboard_state[key] = current_state[i] != 0; + } + } + return this->keyboard_state; +} + +MouseButton SDLContext::sdl_to_mousebutton(Uint8 sdl_button) { + static const std::array<MouseButton, 5> MOUSE_BUTTON_LOOKUP_TABLE = [] { + std::array<MouseButton, 5> table{}; + table.fill(MouseButton::NONE); + + table[SDL_BUTTON_LEFT] = MouseButton::LEFT_MOUSE; + table[SDL_BUTTON_RIGHT] = MouseButton::RIGHT_MOUSE; + table[SDL_BUTTON_MIDDLE] = MouseButton::MIDDLE_MOUSE; + table[SDL_BUTTON_X1] = MouseButton::X1_MOUSE; + table[SDL_BUTTON_X2] = MouseButton::X2_MOUSE; + + return table; + }(); + + if (sdl_button >= MOUSE_BUTTON_LOOKUP_TABLE.size()) { + // Return NONE for invalid or unmapped button + return MouseButton::NONE; + } + + return MOUSE_BUTTON_LOOKUP_TABLE[sdl_button]; +} + +void SDLContext::clear_screen() { SDL_RenderClear(this->game_renderer.get()); } +void SDLContext::present_screen() { + SDL_SetRenderDrawColor(this->game_renderer.get(), 0, 0, 0, 255); + SDL_RenderFillRectF(this->game_renderer.get(), &black_bars[0]); + SDL_RenderFillRectF(this->game_renderer.get(), &black_bars[1]); + SDL_RenderPresent(this->game_renderer.get()); +} + +SDL_FRect SDLContext::get_dst_rect(const DestinationRectangleData & ctx) const { + + const Sprite::Data & data = ctx.sprite.data; + + float aspect_ratio + = (ctx.sprite.aspect_ratio == 0) ? ctx.texture.get_ratio() : ctx.sprite.aspect_ratio; + + vec2 size = data.size; + if (data.size.x == 0 && data.size.y != 0) { + size.x = data.size.y * aspect_ratio; + } + if (data.size.y == 0 && data.size.x != 0) { + size.y = data.size.x / aspect_ratio; + } + size *= cam_aux_data.render_scale * ctx.img_scale * data.scale_offset; + + vec2 screen_pos = (ctx.pos + data.position_offset - cam_aux_data.cam_pos + + (cam_aux_data.zoomed_viewport) / 2) + * cam_aux_data.render_scale + - size / 2 + cam_aux_data.bar_size; + + return SDL_FRect{ + .x = screen_pos.x, + .y = screen_pos.y, + .w = size.x, + .h = size.y, + }; +} + +void SDLContext::draw(const RenderContext & ctx) { + const Sprite::Data & data = ctx.sprite.data; + SDL_RendererFlip render_flip + = (SDL_RendererFlip) ((SDL_FLIP_HORIZONTAL * data.flip.flip_x) + | (SDL_FLIP_VERTICAL * data.flip.flip_y)); + + SDL_Rect srcrect; + SDL_Rect * srcrect_ptr = NULL; + if (ctx.sprite.mask.w != 0 || ctx.sprite.mask.h != 0) { + srcrect.w = ctx.sprite.mask.w; + srcrect.h = ctx.sprite.mask.h; + srcrect.x = ctx.sprite.mask.x; + srcrect.y = ctx.sprite.mask.y; + srcrect_ptr = &srcrect; + } + + SDL_FRect dstrect = this->get_dst_rect(SDLContext::DestinationRectangleData{ + .sprite = ctx.sprite, + .texture = ctx.texture, + .pos = ctx.pos, + .img_scale = ctx.scale, + }); + + double angle = ctx.angle + data.angle_offset; + + this->set_color_texture(ctx.texture, ctx.sprite.data.color); + SDL_RenderCopyExF(this->game_renderer.get(), ctx.texture.get_img(), srcrect_ptr, &dstrect, + angle, NULL, render_flip); +} + +void SDLContext::update_camera_view(const Camera & cam, const vec2 & new_pos) { + + const Camera::Data & cam_data = cam.data; + // resize window + int w, h; + SDL_GetWindowSize(this->game_window.get(), &w, &h); + if (w != cam.screen.x || h != cam.screen.y) { + SDL_SetWindowSize(this->game_window.get(), cam.screen.x, cam.screen.y); + } + + vec2 & zoomed_viewport = this->cam_aux_data.zoomed_viewport; + vec2 & bar_size = this->cam_aux_data.bar_size; + vec2 & render_scale = this->cam_aux_data.render_scale; + this->cam_aux_data.cam_pos = new_pos; + + zoomed_viewport = cam.viewport_size * cam_data.zoom; + float screen_aspect = static_cast<float>(cam.screen.x) / cam.screen.y; + float viewport_aspect = zoomed_viewport.x / zoomed_viewport.y; + + // calculate black bars + if (screen_aspect > viewport_aspect) { + // pillarboxing + float scale = cam.screen.y / zoomed_viewport.y; + float adj_width = zoomed_viewport.x * scale; + float bar_width = (cam.screen.x - adj_width) / 2; + this->black_bars[0] = {0, 0, bar_width, (float) cam.screen.y}; + this->black_bars[1] = {(cam.screen.x - bar_width), 0, bar_width, (float) cam.screen.y}; + + bar_size = {bar_width, 0}; + render_scale.x = render_scale.y = scale; + } else { + // letterboxing + float scale = cam.screen.x / (cam.viewport_size.x * cam_data.zoom); + float adj_height = cam.viewport_size.y * scale; + float bar_height = (cam.screen.y - adj_height) / 2; + this->black_bars[0] = {0, 0, (float) cam.screen.x, bar_height}; + this->black_bars[1] + = {0, (cam.screen.y - bar_height), (float) cam.screen.x, bar_height}; + + bar_size = {0, bar_height}; + render_scale.x = render_scale.y = scale; + } + + SDL_SetRenderDrawColor(this->game_renderer.get(), cam_data.bg_color.r, cam_data.bg_color.g, + cam_data.bg_color.b, cam_data.bg_color.a); + + SDL_Rect bg = { + .x = 0, + .y = 0, + .w = cam.screen.x, + .h = cam.screen.y, + }; + + // fill bg color + SDL_RenderFillRect(this->game_renderer.get(), &bg); +} + +std::unique_ptr<SDL_Texture, std::function<void(SDL_Texture *)>> +SDLContext::texture_from_path(const std::string & path) { + + SDL_Surface * tmp = IMG_Load(path.c_str()); + if (tmp == nullptr) + throw runtime_error(format("SDLContext: IMG_Load error: {}", SDL_GetError())); + + std::unique_ptr<SDL_Surface, std::function<void(SDL_Surface *)>> img_surface; + img_surface = {tmp, [](SDL_Surface * surface) { SDL_FreeSurface(surface); }}; + + SDL_Texture * tmp_texture + = SDL_CreateTextureFromSurface(this->game_renderer.get(), img_surface.get()); + + if (tmp_texture == nullptr) { + throw runtime_error(format("SDLContext: Texture cannot be load from {}", path)); + } + + std::unique_ptr<SDL_Texture, std::function<void(SDL_Texture *)>> img_texture; + img_texture = {tmp_texture, [](SDL_Texture * texture) { SDL_DestroyTexture(texture); }}; + + SDL_SetTextureBlendMode(img_texture.get(), SDL_BLENDMODE_BLEND); + return img_texture; +} + +ivec2 SDLContext::get_size(const Texture & ctx) { + ivec2 size; + SDL_QueryTexture(ctx.get_img(), NULL, NULL, &size.x, &size.y); + return size; +} + +std::vector<EventData> SDLContext::get_events() { + std::vector<EventData> event_list; + SDL_Event event; + const CameraAuxiliaryData & cam = this->cam_aux_data; + while (SDL_PollEvent(&event)) { + ivec2 mouse_pos; + mouse_pos.x = (event.button.x - cam.bar_size.x) / cam.render_scale.x; + mouse_pos.y = (event.button.y - cam.bar_size.y) / cam.render_scale.y; + switch (event.type) { + case SDL_QUIT: + event_list.push_back({.event_type = EventType::SHUTDOWN}); + break; + case SDL_KEYDOWN: + event_list.push_back(EventData{ + .event_type = EventType::KEY_DOWN, + .data = { + .key_data = { + .key = this->sdl_to_keycode(event.key.keysym.scancode), + .key_repeat = event.key.repeat != 0, + }, + }, + }); + break; + + case SDL_KEYUP: + event_list.push_back(EventData{ + .event_type = EventType::KEY_UP, + .data = { + .key_data = { + .key = this->sdl_to_keycode(event.key.keysym.scancode), + .key_repeat = event.key.repeat != 0, + }, + }, + }); + break; + + case SDL_MOUSEBUTTONDOWN: + event_list.push_back(EventData{ + .event_type = EventType::MOUSE_DOWN, + .data = { + .mouse_data = { + .mouse_button = this->sdl_to_mousebutton(event.button.button), + .mouse_position = mouse_pos, + }, + }, + }); + break; + case SDL_MOUSEBUTTONUP: + event_list.push_back(EventData{ + .event_type = EventType::MOUSE_UP, + .data = { + .mouse_data = { + .mouse_button = this->sdl_to_mousebutton(event.button.button), + .mouse_position = mouse_pos, + }, + }, + }); + break; + + case SDL_MOUSEMOTION: + event_list.push_back(EventData{ + .event_type = EventType::MOUSE_MOVE, + .data = { + .mouse_data = { + .mouse_position = mouse_pos, + .rel_mouse_move = {event.motion.xrel, event.motion.yrel}, + }, + }, + }); + break; + + case SDL_MOUSEWHEEL: + event_list.push_back(EventData{ + .event_type = EventType::MOUSE_WHEEL, + .data = { + .mouse_data = { + .mouse_position = mouse_pos, + .scroll_direction = event.wheel.y < 0 ? -1 : 1, + .scroll_delta = event.wheel.preciseY, + }, + }, + }); + break; + case SDL_WINDOWEVENT: + this->handle_window_event(event.window, event_list); + break; + } + } + + return event_list; +} + +void SDLContext::handle_window_event(const SDL_WindowEvent & window_event, + std::vector<EventData> & event_list) { + switch (window_event.event) { + case SDL_WINDOWEVENT_EXPOSED: + event_list.push_back(EventData{EventType::WINDOW_EXPOSE}); + break; + case SDL_WINDOWEVENT_RESIZED: + event_list.push_back(EventData{ + .event_type = EventType::WINDOW_RESIZE, + .data = { + .window_data = { + .resize_dimension = {window_event.data1, window_event.data2} + }, + }, + }); + break; + case SDL_WINDOWEVENT_MOVED: + event_list.push_back(EventData{ + .event_type = EventType::WINDOW_MOVE, + .data = { + .window_data = { + .move_delta = {window_event.data1, window_event.data2} + }, + }, + }); + break; + + case SDL_WINDOWEVENT_MINIMIZED: + event_list.push_back(EventData{EventType::WINDOW_MINIMIZE}); + break; + case SDL_WINDOWEVENT_MAXIMIZED: + event_list.push_back(EventData{EventType::WINDOW_MAXIMIZE}); + break; + case SDL_WINDOWEVENT_FOCUS_GAINED: + event_list.push_back(EventData{EventType::WINDOW_FOCUS_GAIN}); + break; + case SDL_WINDOWEVENT_FOCUS_LOST: + event_list.push_back(EventData{EventType::WINDOW_FOCUS_LOST}); + break; + } +} + +void SDLContext::set_color_texture(const Texture & texture, const Color & color) { + SDL_SetTextureColorMod(texture.get_img(), color.r, color.g, color.b); + SDL_SetTextureAlphaMod(texture.get_img(), color.a); +} + +Asset SDLContext::get_font_from_name(const std::string & font_family) { + return this->font_facade.get_font_asset(font_family); +} diff --git a/src/crepe/facade/SDLContext.h b/src/crepe/facade/SDLContext.h new file mode 100644 index 0000000..b687f87 --- /dev/null +++ b/src/crepe/facade/SDLContext.h @@ -0,0 +1,365 @@ +#pragma once + +#include <SDL2/SDL.h> +#include <SDL2/SDL_keycode.h> +#include <SDL2/SDL_rect.h> +#include <SDL2/SDL_render.h> +#include <SDL2/SDL_video.h> +#include <cmath> +#include <functional> +#include <memory> +#include <string> +#include <unordered_map> + +#include "../types.h" +#include "api/Camera.h" +#include "api/Color.h" +#include "api/KeyCodes.h" +#include "api/Sprite.h" +#include "api/Transform.h" +#include "types.h" + +#include "EventData.h" +#include "FontFacade.h" + +namespace crepe { +class Texture; +class Mediator; + +/** + * \brief Facade for the SDL library + * + * SDLContext is a singleton that handles the SDL window and renderer, provides methods for + * event handling, and rendering to the screen. It is never used directly by the user + */ +class SDLContext { +public: + //! data that the camera component cannot hold + struct CameraAuxiliaryData { + + //! zoomed in viewport in game_units + vec2 zoomed_viewport; + + /** + * \brief scaling factor + * + * depending on the black bars type will the scaling be different. + * - letterboxing --> scaling on the y-as + * - pillarboxing --> scaling on the x-as + */ + vec2 render_scale; + + /** + * \brief size of calculated black bars + * + * depending on the black bars type will the size be different + * - lettorboxing --> {0, bar_height} + * - pillarboxing --> {bar_width , 0} + */ + vec2 bar_size; + + //! Calculated camera position + vec2 cam_pos; + }; + + //! rendering data needed to render on screen + struct RenderContext { + const Sprite & sprite; + const Texture & texture; + const vec2 & pos; + const double & angle; + const double & scale; + }; + +public: + /** + * \brief Gets the singleton instance of SDLContext. + * \return Reference to the SDLContext instance. + */ + static SDLContext & get_instance(); + +public: + SDLContext(const SDLContext &) = delete; + SDLContext(SDLContext &&) = delete; + SDLContext & operator=(const SDLContext &) = delete; + SDLContext & operator=(SDLContext &&) = delete; + +public: + /** + * \brief Constructs an SDLContext instance. + * Initializes SDL, creates a window and renderer. + */ + SDLContext(Mediator & mediator); + + /** + * \brief Destroys the SDLContext instance. + * Cleans up SDL resources, including the window and renderer. + */ + ~SDLContext(); + +public: + /** + * \brief Retrieves a list of all events from the SDL context. + * + * This method retrieves all the events from the SDL context that are currently + * available. It is primarily used by the InputSystem to process various + * input events such as mouse clicks, mouse movements, and keyboard presses. + * + * \return Events that occurred since last call to `get_events()` + */ + std::vector<EventData> get_events(); + /** + * \brief Fills event_list with triggered window events + * + * This method checks if any window events are triggered and adds them to the event_list. + * + */ + void handle_window_event(const SDL_WindowEvent & window_event, + std::vector<EventData> & event_list); + /** + * \brief Converts an SDL scan code to the custom Keycode type. + * + * This method maps an SDL scan code to the corresponding `Keycode` enum value, + * which is used internally by the system to identify the keys. + * + * \param sdl_key The SDL scan code to convert. + * \return The corresponding `Keycode` value or `Keycode::NONE` if the key is unrecognized. + */ + Keycode sdl_to_keycode(SDL_Scancode sdl_key); + + /** + * \brief Converts an SDL mouse button code to the custom MouseButton type. + * + * This method maps an SDL mouse button code to the corresponding `MouseButton` + * enum value, which is used internally by the system to identify mouse buttons. + * + * \param sdl_button The SDL mouse button code to convert. + * \return The corresponding `MouseButton` value or `MouseButton::NONE` if the key is unrecognized + */ + MouseButton sdl_to_mousebutton(Uint8 sdl_button); + /** + * \brief Gets the current state of the keyboard. + * + * Updates the internal keyboard state by checking the current key states using + * SDL's `SDL_GetKeyboardState()`, and returns a reference to the `keyboard_state_t`. + * + * \return A constant reference to the `keyboard_state_t`, which holds the state + * of each key (true = pressed, false = not pressed). + */ + const keyboard_state_t & get_keyboard_state(); + +public: + /** + * \brief Gets the current SDL ticks since the program started. + * \return Current ticks in milliseconds as a constant uint64_t. + */ + uint64_t get_ticks() const; + /** + * \brief Pauses the execution for a specified duration. + * + * This function uses SDL's delay function to halt the program execution for a given number + * of milliseconds, allowing for frame rate control or other timing-related functionality. + * + * \param ms Duration of the delay in milliseconds. + */ + void delay(int ms) const; + +public: + /** + * \brief Loads a texture from a file path. + * \param path Path to the image file. + * \return Pointer to the created SDL_Texture. + */ + std::unique_ptr<SDL_Texture, std::function<void(SDL_Texture *)>> + texture_from_path(const std::string & path); + /** + * \brief Gets the size of a texture. + * \param texture Reference to the Texture object. + * \return Width and height of the texture as an integer in pixels. + */ + ivec2 get_size(const Texture & ctx); + +public: + /** + * \brief Draws a sprite to the screen using the specified transform and camera. + * \param RenderContext Reference to rendering data to draw + */ + void draw(const RenderContext & ctx); + + //! Clears the screen, preparing for a new frame. + void clear_screen(); + + //! Presents the rendered frame to the screen. + void present_screen(); + + /** + * \brief calculates camera view settings. such as black_bars, zoomed_viewport, scaling and + * adjusting window size. + * + * \note only supports windowed mode. + * \param camera Reference to the current Camera object in the scene. + * \param new_pos new camera position from transform and offset + */ + void update_camera_view(const Camera & camera, const vec2 & new_pos); + +public: + //! the data needed to construct a sdl dst rectangle + struct DestinationRectangleData { + const Sprite & sprite; + const Texture & texture; + const vec2 & pos; + const double & img_scale; + }; + + /** + * \brief calculates the sqaure size of the image for destination + * + * \param data needed to calculate a destination rectangle + * \return sdl rectangle to draw a dst image to draw on the screen + */ + SDL_FRect get_dst_rect(const DestinationRectangleData & data) const; + /** + * \brief Set an additional color value multiplied into render copy operations. + * + * \param texture the given texture to adjust + * \param color the color data for the texture + */ + void set_color_texture(const Texture & texture, const Color & color); + +private: + //! sdl Window + std::unique_ptr<SDL_Window, std::function<void(SDL_Window *)>> game_window; + + //! renderer for the crepe engine + std::unique_ptr<SDL_Renderer, std::function<void(SDL_Renderer *)>> game_renderer; + + //! black bars rectangle to draw + SDL_FRect black_bars[2] = {}; + + /** + * \cam_aux_data extra data that the component cannot hold. + * + * - this is defined in this class because get_events() needs this information aswell + */ + CameraAuxiliaryData cam_aux_data; + +private: + //! instance of the font_facade + FontFacade font_facade{}; + +public: + /** + * \brief Function to Get asset from font_family + * + * This function uses the FontFacade function to convert a font_family to an asset. + * + * \param font_family name of the font style that needs to be used (will return an asset with default font path of the font_family doesnt exist) + * + * \return asset with the font style absolute path + */ + Asset get_font_from_name(const std::string & font_family); + //! variable to store the state of each key (true = pressed, false = not pressed) + keyboard_state_t keyboard_state; + //! lookup table for converting SDL_SCANCODES to Keycodes + const std::unordered_map<SDL_Scancode, Keycode> lookup_table + = {{SDL_SCANCODE_SPACE, Keycode::SPACE}, + {SDL_SCANCODE_APOSTROPHE, Keycode::APOSTROPHE}, + {SDL_SCANCODE_COMMA, Keycode::COMMA}, + {SDL_SCANCODE_MINUS, Keycode::MINUS}, + {SDL_SCANCODE_PERIOD, Keycode::PERIOD}, + {SDL_SCANCODE_SLASH, Keycode::SLASH}, + {SDL_SCANCODE_0, Keycode::D0}, + {SDL_SCANCODE_1, Keycode::D1}, + {SDL_SCANCODE_2, Keycode::D2}, + {SDL_SCANCODE_3, Keycode::D3}, + {SDL_SCANCODE_4, Keycode::D4}, + {SDL_SCANCODE_5, Keycode::D5}, + {SDL_SCANCODE_6, Keycode::D6}, + {SDL_SCANCODE_7, Keycode::D7}, + {SDL_SCANCODE_8, Keycode::D8}, + {SDL_SCANCODE_9, Keycode::D9}, + {SDL_SCANCODE_SEMICOLON, Keycode::SEMICOLON}, + {SDL_SCANCODE_EQUALS, Keycode::EQUAL}, + {SDL_SCANCODE_A, Keycode::A}, + {SDL_SCANCODE_B, Keycode::B}, + {SDL_SCANCODE_C, Keycode::C}, + {SDL_SCANCODE_D, Keycode::D}, + {SDL_SCANCODE_E, Keycode::E}, + {SDL_SCANCODE_F, Keycode::F}, + {SDL_SCANCODE_G, Keycode::G}, + {SDL_SCANCODE_H, Keycode::H}, + {SDL_SCANCODE_I, Keycode::I}, + {SDL_SCANCODE_J, Keycode::J}, + {SDL_SCANCODE_K, Keycode::K}, + {SDL_SCANCODE_L, Keycode::L}, + {SDL_SCANCODE_M, Keycode::M}, + {SDL_SCANCODE_N, Keycode::N}, + {SDL_SCANCODE_O, Keycode::O}, + {SDL_SCANCODE_P, Keycode::P}, + {SDL_SCANCODE_Q, Keycode::Q}, + {SDL_SCANCODE_R, Keycode::R}, + {SDL_SCANCODE_S, Keycode::S}, + {SDL_SCANCODE_T, Keycode::T}, + {SDL_SCANCODE_U, Keycode::U}, + {SDL_SCANCODE_V, Keycode::V}, + {SDL_SCANCODE_W, Keycode::W}, + {SDL_SCANCODE_X, Keycode::X}, + {SDL_SCANCODE_Y, Keycode::Y}, + {SDL_SCANCODE_Z, Keycode::Z}, + {SDL_SCANCODE_LEFTBRACKET, Keycode::LEFT_BRACKET}, + {SDL_SCANCODE_BACKSLASH, Keycode::BACKSLASH}, + {SDL_SCANCODE_RIGHTBRACKET, Keycode::RIGHT_BRACKET}, + {SDL_SCANCODE_GRAVE, Keycode::GRAVE_ACCENT}, + {SDL_SCANCODE_ESCAPE, Keycode::ESCAPE}, + {SDL_SCANCODE_RETURN, Keycode::ENTER}, + {SDL_SCANCODE_TAB, Keycode::TAB}, + {SDL_SCANCODE_BACKSPACE, Keycode::BACKSPACE}, + {SDL_SCANCODE_INSERT, Keycode::INSERT}, + {SDL_SCANCODE_DELETE, Keycode::DELETE}, + {SDL_SCANCODE_RIGHT, Keycode::RIGHT}, + {SDL_SCANCODE_LEFT, Keycode::LEFT}, + {SDL_SCANCODE_DOWN, Keycode::DOWN}, + {SDL_SCANCODE_UP, Keycode::UP}, + {SDL_SCANCODE_PAGEUP, Keycode::PAGE_UP}, + {SDL_SCANCODE_PAGEDOWN, Keycode::PAGE_DOWN}, + {SDL_SCANCODE_HOME, Keycode::HOME}, + {SDL_SCANCODE_END, Keycode::END}, + {SDL_SCANCODE_CAPSLOCK, Keycode::CAPS_LOCK}, + {SDL_SCANCODE_SCROLLLOCK, Keycode::SCROLL_LOCK}, + {SDL_SCANCODE_NUMLOCKCLEAR, Keycode::NUM_LOCK}, + {SDL_SCANCODE_PRINTSCREEN, Keycode::PRINT_SCREEN}, + {SDL_SCANCODE_PAUSE, Keycode::PAUSE}, + {SDL_SCANCODE_F1, Keycode::F1}, + {SDL_SCANCODE_F2, Keycode::F2}, + {SDL_SCANCODE_F3, Keycode::F3}, + {SDL_SCANCODE_F4, Keycode::F4}, + {SDL_SCANCODE_F5, Keycode::F5}, + {SDL_SCANCODE_F6, Keycode::F6}, + {SDL_SCANCODE_F7, Keycode::F7}, + {SDL_SCANCODE_F8, Keycode::F8}, + {SDL_SCANCODE_F9, Keycode::F9}, + {SDL_SCANCODE_F10, Keycode::F10}, + {SDL_SCANCODE_F11, Keycode::F11}, + {SDL_SCANCODE_F12, Keycode::F12}, + {SDL_SCANCODE_KP_0, Keycode::KP0}, + {SDL_SCANCODE_KP_1, Keycode::KP1}, + {SDL_SCANCODE_KP_2, Keycode::KP2}, + {SDL_SCANCODE_KP_3, Keycode::KP3}, + {SDL_SCANCODE_KP_4, Keycode::KP4}, + {SDL_SCANCODE_KP_5, Keycode::KP5}, + {SDL_SCANCODE_KP_6, Keycode::KP6}, + {SDL_SCANCODE_KP_7, Keycode::KP7}, + {SDL_SCANCODE_KP_8, Keycode::KP8}, + {SDL_SCANCODE_KP_9, Keycode::KP9}, + {SDL_SCANCODE_LSHIFT, Keycode::LEFT_SHIFT}, + {SDL_SCANCODE_LCTRL, Keycode::LEFT_CONTROL}, + {SDL_SCANCODE_LALT, Keycode::LEFT_ALT}, + {SDL_SCANCODE_LGUI, Keycode::LEFT_SUPER}, + {SDL_SCANCODE_RSHIFT, Keycode::RIGHT_SHIFT}, + {SDL_SCANCODE_RCTRL, Keycode::RIGHT_CONTROL}, + {SDL_SCANCODE_RALT, Keycode::RIGHT_ALT}, + {SDL_SCANCODE_RGUI, Keycode::RIGHT_SUPER}, + {SDL_SCANCODE_MENU, Keycode::MENU}}; +}; + +} // namespace crepe diff --git a/src/crepe/facade/Sound.cpp b/src/crepe/facade/Sound.cpp new file mode 100644 index 0000000..b1e6463 --- /dev/null +++ b/src/crepe/facade/Sound.cpp @@ -0,0 +1,13 @@ +#include "../api/Asset.h" +#include "../util/dbg.h" + +#include "Sound.h" + +using namespace crepe; +using namespace std; + +Sound::Sound(const Asset & src, Mediator & mediator) : Resource(src, mediator) { + this->sample.load(src.get_path().c_str()); + dbg_trace(); +} +Sound::~Sound() { dbg_trace(); } diff --git a/src/crepe/facade/Sound.h b/src/crepe/facade/Sound.h new file mode 100644 index 0000000..4a5d692 --- /dev/null +++ b/src/crepe/facade/Sound.h @@ -0,0 +1,31 @@ +#pragma once + +#include <soloud/soloud.h> +#include <soloud/soloud_wav.h> + +#include "../Resource.h" + +namespace crepe { + +class SoundContext; +class Mediator; + +/** + * \brief Sound resource facade + * + * This class is a wrapper around a \c SoLoud::Wav instance, which holds a single sample. It is + * part of the sound facade. + */ +class Sound : public Resource { +public: + Sound(const Asset & src, Mediator & mediator); + ~Sound(); // dbg_trace + +private: + //! Deserialized resource (soloud) + SoLoud::Wav sample; + //! SoundContext uses \c sample + friend class SoundContext; +}; + +} // namespace crepe diff --git a/src/crepe/facade/SoundContext.cpp b/src/crepe/facade/SoundContext.cpp new file mode 100644 index 0000000..5091e07 --- /dev/null +++ b/src/crepe/facade/SoundContext.cpp @@ -0,0 +1,36 @@ +#include "../util/dbg.h" + +#include "SoundContext.h" + +using namespace crepe; + +SoundContext::SoundContext() { + dbg_trace(); + this->engine.init(); + this->engine.setMaxActiveVoiceCount(this->config.audio.voices); +} + +SoundContext::~SoundContext() { + dbg_trace(); + this->engine.deinit(); +} + +SoundHandle SoundContext::play(Sound & resource) { + SoLoud::handle real_handle = this->engine.play(resource.sample, 1.0f); + SoundHandle handle = this->next_handle; + this->registry[handle] = real_handle; + this->next_handle++; + return handle; +} + +void SoundContext::stop(const SoundHandle & handle) { + this->engine.stop(this->registry[handle]); +} + +void SoundContext::set_volume(const SoundHandle & handle, float volume) { + this->engine.setVolume(this->registry[handle], volume); +} + +void SoundContext::set_loop(const SoundHandle & handle, bool loop) { + this->engine.setLooping(this->registry[handle], loop); +} diff --git a/src/crepe/facade/SoundContext.h b/src/crepe/facade/SoundContext.h new file mode 100644 index 0000000..d986c59 --- /dev/null +++ b/src/crepe/facade/SoundContext.h @@ -0,0 +1,81 @@ +#pragma once + +#include <soloud/soloud.h> + +#include "../api/Config.h" + +#include "Sound.h" +#include "SoundHandle.h" + +namespace crepe { + +/** + * \brief Sound engine facade + * + * This class is a wrapper around a \c SoLoud::Soloud instance, which provides the methods for + * playing \c Sound instances. It is part of the sound facade. + */ +class SoundContext { +public: + SoundContext(); + virtual ~SoundContext(); + + SoundContext(const SoundContext &) = delete; + SoundContext(SoundContext &&) = delete; + SoundContext & operator=(const SoundContext &) = delete; + SoundContext & operator=(SoundContext &&) = delete; + + /** + * \brief Play a sample + * + * Plays a Sound from the beginning of the sample and returns a handle to control it later. + * + * \param resource Sound instance to play + * + * \returns Handle to control this voice + */ + virtual SoundHandle play(Sound & resource); + /** + * \brief Stop a voice immediately if it is still playing + * + * \note This function does nothing if the handle is invalid or if the sound is already + * stopped / finished playing. + * + * \param handle Voice handle returned by SoundContext::play + */ + virtual void stop(const SoundHandle & handle); + /** + * \brief Change the volume of a voice + * + * \note This function does nothing if the handle is invalid or if the sound is already + * stopped / finished playing. + * + * \param handle Voice handle returned by SoundContext::play + * \param volume New gain value (0=silent, 1=default) + */ + virtual void set_volume(const SoundHandle & handle, float volume); + /** + * \brief Set the looping behavior of a voice + * + * \note This function does nothing if the handle is invalid or if the sound is already + * stopped / finished playing. + * + * \param handle Voice handle returned by SoundContext::play + * \param loop Looping behavior (false=oneshot, true=loop) + */ + virtual void set_loop(const SoundHandle & handle, bool loop); + +private: + //! Abstracted class + SoLoud::Soloud engine; + + //! Config reference + Config & config = Config::get_instance(); + + //! Sound handle registry + std::unordered_map<SoundHandle, SoLoud::handle> registry; + //! Unique handle counter + SoundHandle next_handle = 0; +}; + +} // namespace crepe diff --git a/src/crepe/facade/SoundHandle.h b/src/crepe/facade/SoundHandle.h new file mode 100644 index 0000000..b7925fc --- /dev/null +++ b/src/crepe/facade/SoundHandle.h @@ -0,0 +1,12 @@ +#pragma once + +#include <cstddef> + +namespace crepe { + +/** + * \brief Voice handle returned by + */ +typedef size_t SoundHandle; + +} // namespace crepe diff --git a/src/crepe/facade/Texture.cpp b/src/crepe/facade/Texture.cpp new file mode 100644 index 0000000..6fb22e1 --- /dev/null +++ b/src/crepe/facade/Texture.cpp @@ -0,0 +1,29 @@ +#include "../Resource.h" +#include "../facade/SDLContext.h" +#include "../manager/Mediator.h" +#include "../types.h" +#include "../util/dbg.h" + +#include "Texture.h" + +using namespace crepe; +using namespace std; + +Texture::Texture(const Asset & src, Mediator & mediator) : Resource(src, mediator) { + dbg_trace(); + SDLContext & ctx = mediator.sdl_context; + this->texture = ctx.texture_from_path(src.get_path()); + this->size = ctx.get_size(*this); + this->aspect_ratio = static_cast<float>(this->size.x) / this->size.y; +} + +Texture::~Texture() { + dbg_trace(); + this->texture.reset(); +} + +const ivec2 & Texture::get_size() const noexcept { return this->size; } + +const float & Texture::get_ratio() const noexcept { return this->aspect_ratio; } + +SDL_Texture * Texture::get_img() const noexcept { return this->texture.get(); } diff --git a/src/crepe/facade/Texture.h b/src/crepe/facade/Texture.h new file mode 100644 index 0000000..cdacac4 --- /dev/null +++ b/src/crepe/facade/Texture.h @@ -0,0 +1,69 @@ +#pragma once + +#include <SDL2/SDL_render.h> +#include <memory> + +#include "../Resource.h" + +#include "types.h" + +namespace crepe { + +class Mediator; +class Asset; + +/** + * \class Texture + * \brief Manages texture loading and properties. + * + * The Texture class is responsible for loading an image from a source and providing access to + * its dimensions. Textures can be used for rendering. + */ +class Texture : public Resource { + +public: + /** + * \brief Constructs a Texture from an Asset resource. + * \param src Asset with texture data to load. + * \param mediator use the SDLContext reference to load the image + */ + Texture(const Asset & src, Mediator & mediator); + + /** + * \brief Destroys the Texture instance + */ + ~Texture(); + + /** + * \brief get width and height of image in pixels + * \return pixel size width and height + * + */ + const ivec2 & get_size() const noexcept; + + /** + * \brief aspect_ratio of image + * \return ratio + * + */ + const float & get_ratio() const noexcept; + + /** + * \brief get the image texture + * \return SDL_Texture + * + */ + SDL_Texture * get_img() const noexcept; + +private: + //! The texture of the class from the library + std::unique_ptr<SDL_Texture, std::function<void(SDL_Texture *)>> texture; + + // texture size in pixel + ivec2 size; + + //! ratio of image + float aspect_ratio; +}; + +} // namespace crepe diff --git a/src/crepe/manager/CMakeLists.txt b/src/crepe/manager/CMakeLists.txt new file mode 100644 index 0000000..48e444f --- /dev/null +++ b/src/crepe/manager/CMakeLists.txt @@ -0,0 +1,30 @@ +target_sources(crepe PUBLIC + ComponentManager.cpp + EventManager.cpp + Manager.cpp + SaveManager.cpp + SceneManager.cpp + LoopTimerManager.cpp + ResourceManager.cpp + ReplayManager.cpp + SystemManager.cpp +) + +target_sources(crepe PUBLIC FILE_SET HEADERS FILES + ComponentManager.h + ComponentManager.hpp + EventManager.h + EventManager.hpp + Manager.h + Mediator.h + SaveManager.h + SceneManager.h + SceneManager.hpp + LoopTimerManager.h + ResourceManager.h + ResourceManager.hpp + ReplayManager.h + SystemManager.h + SystemManager.hpp +) + diff --git a/src/crepe/manager/ComponentManager.cpp b/src/crepe/manager/ComponentManager.cpp new file mode 100644 index 0000000..745ddae --- /dev/null +++ b/src/crepe/manager/ComponentManager.cpp @@ -0,0 +1,99 @@ +#include "../api/GameObject.h" +#include "../api/Metadata.h" +#include "../types.h" +#include "../util/dbg.h" + +#include "ComponentManager.h" + +using namespace crepe; +using namespace std; + +ComponentManager::ComponentManager(Mediator & mediator) : Manager(mediator) { + mediator.component_manager = *this; + dbg_trace(); +} +ComponentManager::~ComponentManager() { dbg_trace(); } + +void ComponentManager::delete_all_components_of_id(game_object_id_t id) { + // Do not delete persistent objects + if (this->persistent[id]) { + return; + } + + // Loop through all the types (in the unordered_map<>) + for (auto & [type, component_array] : this->components) { + // Make sure that the id (that we are looking for) is within the boundaries of the vector<> + if (id < component_array.size()) { + // Clear the components at this specific id + component_array[id].clear(); + } + } +} + +void ComponentManager::delete_all_components() { + // Loop through all the types (in the unordered_map<>) + for (auto & [type, component_array] : this->components) { + // Loop through all the ids (in the vector<>) + for (game_object_id_t id = 0; id < component_array.size(); id++) { + // Do not delete persistent objects + if (!this->persistent[id]) { + // Clear the components at this specific id + component_array[id].clear(); + } + } + } + + this->next_id = 0; +} + +GameObject ComponentManager::new_object(const string & name, const string & tag, + const vec2 & position, double rotation, double scale) { + // Find the first available id (taking persistent objects into account) + while (this->persistent[this->next_id]) { + this->next_id++; + } + + GameObject object{this->mediator, this->next_id, name, tag, position, rotation, scale}; + this->next_id++; + + return object; +} + +void ComponentManager::set_persistent(game_object_id_t id, bool persistent) { + this->persistent[id] = persistent; +} + +set<game_object_id_t> ComponentManager::get_objects_by_name(const string & name) const { + return this->get_objects_by_predicate<Metadata>( + [name](const Metadata & data) { return data.name == name; }); +} + +set<game_object_id_t> ComponentManager::get_objects_by_tag(const string & tag) const { + return this->get_objects_by_predicate<Metadata>( + [tag](const Metadata & data) { return data.tag == tag; }); +} + +ComponentManager::Snapshot ComponentManager::save() { + Snapshot snapshot{}; + for (const auto & [type, by_id_index] : this->components) { + for (game_object_id_t id = 0; id < by_id_index.size(); id++) { + const auto & components = by_id_index[id]; + for (size_t index = 0; index < components.size(); index++) { + const Component & component = *components[index]; + snapshot.components.push_back(SnapshotComponent{ + .type = type, + .id = id, + .index = index, + .component = component.save(), + }); + } + } + } + return snapshot; +} + +void ComponentManager::restore(const Snapshot & snapshot) { + for (const SnapshotComponent & info : snapshot.components) { + this->components[info.type][info.id][info.index]->restore(*info.component); + } +} diff --git a/src/crepe/manager/ComponentManager.h b/src/crepe/manager/ComponentManager.h new file mode 100644 index 0000000..c3a5b4a --- /dev/null +++ b/src/crepe/manager/ComponentManager.h @@ -0,0 +1,252 @@ +#pragma once + +#include <memory> +#include <set> +#include <typeindex> +#include <unordered_map> +#include <vector> + +#include "../Component.h" +#include "../types.h" + +#include "Manager.h" + +namespace crepe { + +class GameObject; + +/** + * \brief Manages all components + * + * This class manages all components. It provides methods to add, delete and get components. + */ +class ComponentManager : public Manager { +public: + ComponentManager(Mediator & mediator); + ~ComponentManager(); // dbg_trace + + /** + * \brief Create a new game object using the component manager + * + * \param name Metadata::name (required) + * \param tag Metadata::tag (optional, empty by default) + * \param position Transform::position (optional, origin by default) + * \param rotation Transform::rotation (optional, 0 by default) + * \param scale Transform::scale (optional, 1 by default) + * + * \returns GameObject interface + * + * \note This method automatically assigns a new entity ID + */ + GameObject new_object(const std::string & name, const std::string & tag = "", + const vec2 & position = {0, 0}, double rotation = 0, + double scale = 1); + +public: + /** + * \brief Add a component to the ComponentManager + * + * This method adds a component to the ComponentManager. The component is created with the + * given arguments and added to the ComponentManager. + * + * \tparam T The type of the component + * \tparam Args The types of the arguments + * \param id The id of the GameObject this component belongs to + * \param args The arguments to create the component + * \return The created component + */ + template <typename T, typename... Args> + T & add_component(game_object_id_t id, Args &&... args); + /** + * \brief Delete all components of a specific type and id + * + * This method deletes all components of a specific type and id. + * + * \tparam T The type of the component + * \param id The id of the GameObject this component belongs to + */ + template <typename T> + void delete_components_by_id(game_object_id_t id); + /** + * \brief Delete all components of a specific type + * + * This method deletes all components of a specific type. + * + * \tparam T The type of the component + */ + template <typename T> + void delete_components(); + /** + * \brief Delete all components of a specific id + * + * This method deletes all components of a specific id. + * + * \param id The id of the GameObject this component belongs to + */ + void delete_all_components_of_id(game_object_id_t id); + /** + * \brief Delete all components + * + * This method deletes all components. + */ + void delete_all_components(); + /** + * \brief Set a GameObject as persistent + * + * This method sets a GameObject as persistent. If a GameObject is persistent, its + * components will not be deleted. + * + * \param id The id of the GameObject to set as persistent + * \param persistent The persistent flag + */ + void set_persistent(game_object_id_t id, bool persistent); + +public: + /** + * \brief Get all components of a specific type and id + * + * This method gets all components of a specific type and id. + * + * \tparam T The type of the component + * \param id The id of the GameObject this component belongs to + * \return A vector of all components of the specific type and id + */ + template <typename T> + RefVector<T> get_components_by_id(game_object_id_t id) const; + /** + * \brief Get all components of a specific type + * + * This method gets all components of a specific type. + * + * \tparam T The type of the component + * \return A vector of all components of the specific type + */ + template <typename T> + RefVector<T> get_components_by_type() const; + /** + * \brief Get all components of a specific type on a GameObject with name \c name + * + * \tparam T The type of the component + * \param name Metadata::name for the same game_object_id as the returned components + * \return Components matching criteria + */ + template <typename T> + RefVector<T> get_components_by_name(const std::string & name) const; + /** + * \brief Get all components of a specific type on a GameObject with tag \c tag + * + * \tparam T The type of the component + * \param name Metadata::tag for the same game_object_id as the returned components + * \return Components matching criteria + */ + template <typename T> + RefVector<T> get_components_by_tag(const std::string & tag) const; + + //! Snapshot of single component (including path in \c components) + struct SnapshotComponent { + //! \c components path + std::type_index type; + //! \c components path + game_object_id_t id; + //! \c components path + size_t index; + //! Actual component snapshot + std::unique_ptr<Component> component; + }; + //! Snapshot of the entire component manager state + struct Snapshot { + //! All components + std::vector<SnapshotComponent> components; + // TODO: some kind of hash code that ensures components exist in all the same places as + // this snapshot + }; + /** + * \name ReplayManager (Memento) functions + * \{ + */ + /** + * \brief Save a snapshot of the component manager state + * \returns Deep copy of the component manager's internal state + */ + Snapshot save(); + /** + * \brief Restore component manager from a snapshot + * \param snapshot Snapshot to restore from (as returned by \c save()) + */ + void restore(const Snapshot & snapshot); + //! \} + +private: + /** + * \brief Get object IDs by predicate function + * + * This function calls the predicate function \c pred for all components matching type \c T, + * and adds their parent game_object_id to a \c std::set if the predicate returns true. + * + * \tparam T The type of the component to check the predicate against + * \param pred Predicate function + * + * \note The predicate function may be called for multiple components with the same \c + * game_object_id. In this case, the ID is added if *any* call returns \c true. + * + * \returns game_object_id for all components where the predicate returned true + */ + template <typename T> + std::set<game_object_id_t> + get_objects_by_predicate(const std::function<bool(const T &)> & pred) const; + + /** + * \brief Get components of type \c T for multiple game object IDs + * + * \tparam T The type of the components to return + * \param ids The object IDs + * + * \return All components matching type \c T and one of the IDs in \c ids + */ + template <typename T> + RefVector<T> get_components_by_ids(const std::set<game_object_id_t> & ids) const; + + /** + * \brief Get object IDs for objects with name \c name + * + * \param name Object name to match + * \returns Object IDs where Metadata::name is equal to \c name + */ + std::set<game_object_id_t> get_objects_by_name(const std::string & name) const; + /** + * \brief Get object IDs for objects with tag \c tag + * + * \param tag Object tag to match + * \returns Object IDs where Metadata::tag is equal to \c tag + */ + std::set<game_object_id_t> get_objects_by_tag(const std::string & tag) const; + +private: + //! By Component \c std::type_index (readability helper type) + template <typename T> + using by_type = std::unordered_map<std::type_index, T>; + //! By \c game_object_id index (readability helper type) + template <typename T> + using by_id_index = std::vector<T>; + /** + * \brief The components + * + * This unordered_map stores all components. The key is the type of the component and the + * value is a vector of vectors of unique pointers to the components. + * + * Every component type has its own vector of vectors of unique pointers to the components. + * The first vector is for the ids of the GameObjects and the second vector is for the + * components (because a GameObject might have multiple components). + */ + by_type<by_id_index<std::vector<std::unique_ptr<Component>>>> components; + + //! Persistent flag for each GameObject + std::unordered_map<game_object_id_t, bool> persistent; + + //! ID of next GameObject allocated by \c ComponentManager::new_object + game_object_id_t next_id = 0; +}; + +} // namespace crepe + +#include "ComponentManager.hpp" diff --git a/src/crepe/manager/ComponentManager.hpp b/src/crepe/manager/ComponentManager.hpp new file mode 100644 index 0000000..9e70865 --- /dev/null +++ b/src/crepe/manager/ComponentManager.hpp @@ -0,0 +1,196 @@ +#pragma once + +#include <type_traits> + +#include "ComponentManager.h" +#include "types.h" + +namespace crepe { + +template <class T, typename... Args> +T & ComponentManager::add_component(game_object_id_t id, Args &&... args) { + using namespace std; + + static_assert(is_base_of<Component, T>::value, + "add_component must recieve a derivative class of Component"); + + // Determine the type of T (this is used as the key of the unordered_map<>) + type_index type = typeid(T); + + // Check if this component type is already in the unordered_map<> + if (this->components.find(type) == this->components.end()) { + //If not, create a new (empty) vector<> of vector<unique_ptr<Component>> + this->components[type] = vector<vector<unique_ptr<Component>>>(); + } + + // Resize the vector<> if the id is greater than the current size + if (id >= this->components[type].size()) { + // Initialize new slots to nullptr (resize does automatically init to nullptr) + this->components[type].resize(id + 1); + } + + // Create a new component of type T (arguments directly forwarded). The + // constructor must be called by ComponentManager. + T * instance_ptr = new T(id, forward<Args>(args)...); + if (instance_ptr == nullptr) throw std::bad_alloc(); + + T & instance_ref = *instance_ptr; + unique_ptr<T> instance = unique_ptr<T>(instance_ptr); + + // Check if the vector size is not greater than get_instances_max + int max_instances = instance->get_instances_max(); + if (max_instances != -1 && components[type][id].size() >= max_instances) { + throw std::runtime_error( + "Exceeded maximum number of instances for this component type"); + } + + // store its unique_ptr in the vector<> + this->components[type][id].push_back(std::move(instance)); + + return instance_ref; +} + +template <typename T> +void ComponentManager::delete_components_by_id(game_object_id_t id) { + using namespace std; + + // Do not delete persistent objects + if (this->persistent[id]) { + return; + } + + // Determine the type of T (this is used as the key of the unordered_map<>) + type_index type = typeid(T); + + // Find the type (in the unordered_map<>) + if (this->components.find(type) != this->components.end()) { + // Get the correct vector<> + vector<vector<unique_ptr<Component>>> & component_array = this->components[type]; + + // Make sure that the id (that we are looking for) is within the boundaries of the vector<> + if (id < component_array.size()) { + // Clear the whole vector<> of this specific type and id + component_array[id].clear(); + } + } +} + +template <typename T> +void ComponentManager::delete_components() { + // Determine the type of T (this is used as the key of the unordered_map<>) + std::type_index type = typeid(T); + + if (this->components.find(type) == this->components.end()) return; + + // Loop through the whole vector<> of this specific type + for (game_object_id_t i = 0; i < this->components[type].size(); ++i) { + // Do not delete persistent objects + if (!this->persistent[i]) { + this->components[type][i].clear(); + } + } +} + +template <typename T> +RefVector<T> ComponentManager::get_components_by_id(game_object_id_t id) const { + using namespace std; + + static_assert(is_base_of<Component, T>::value, + "get_components_by_id must recieve a derivative class of Component"); + + type_index type = typeid(T); + if (!this->components.contains(type)) return {}; + + const by_id_index<vector<unique_ptr<Component>>> & components_by_id + = this->components.at(type); + if (id >= components_by_id.size()) return {}; + + RefVector<T> out = {}; + const vector<unique_ptr<Component>> & components = components_by_id.at(id); + for (auto & component_ptr : components) { + if (component_ptr == nullptr) continue; + Component & component = *component_ptr.get(); + out.push_back(static_cast<T &>(component)); + } + + return out; +} + +template <typename T> +RefVector<T> ComponentManager::get_components_by_type() const { + using namespace std; + + // Determine the type of T (this is used as the key of the unordered_map<>) + type_index type = typeid(T); + + // Create an empty vector<> + RefVector<T> component_vector; + + // Find the type (in the unordered_map<>) + if (this->components.find(type) == this->components.end()) return component_vector; + + // Get the correct vector<> + const vector<vector<unique_ptr<Component>>> & component_array = this->components.at(type); + + // Loop through the whole vector<> + for (const vector<unique_ptr<Component>> & component : component_array) { + // Loop trough the whole vector<> + for (const unique_ptr<Component> & component_ptr : component) { + // Cast the unique_ptr to a raw pointer + T * casted_component = static_cast<T *>(component_ptr.get()); + + // Ensure that the cast was successful + if (casted_component == nullptr) continue; + + // Add the dereferenced raw pointer to the vector<> + component_vector.emplace_back(ref(*casted_component)); + } + } + + // Return the vector<> + return component_vector; +} + +template <typename T> +std::set<game_object_id_t> +ComponentManager::get_objects_by_predicate(const std::function<bool(const T &)> & pred) const { + using namespace std; + + set<game_object_id_t> objects = {}; + RefVector<T> components = this->get_components_by_type<T>(); + + for (const T & component : components) { + game_object_id_t id = dynamic_cast<const Component &>(component).game_object_id; + if (objects.contains(id)) continue; + if (!pred(component)) continue; + objects.insert(id); + } + + return objects; +} + +template <typename T> +RefVector<T> +ComponentManager::get_components_by_ids(const std::set<game_object_id_t> & ids) const { + using namespace std; + + RefVector<T> out = {}; + for (game_object_id_t id : ids) { + RefVector<T> components = get_components_by_id<T>(id); + out.insert(out.end(), components.begin(), components.end()); + } + + return out; +} + +template <typename T> +RefVector<T> ComponentManager::get_components_by_name(const std::string & name) const { + return this->get_components_by_ids<T>(this->get_objects_by_name(name)); +} + +template <typename T> +RefVector<T> ComponentManager::get_components_by_tag(const std::string & tag) const { + return this->get_components_by_ids<T>(this->get_objects_by_tag(tag)); +} + +} // namespace crepe diff --git a/src/crepe/manager/EventManager.cpp b/src/crepe/manager/EventManager.cpp new file mode 100644 index 0000000..6aa49ee --- /dev/null +++ b/src/crepe/manager/EventManager.cpp @@ -0,0 +1,44 @@ +#include "EventManager.h" + +using namespace crepe; +using namespace std; + +EventManager::EventManager(Mediator & mediator) : Manager(mediator) { + this->mediator.event_manager = *this; +} +void EventManager::dispatch_events() { + for (auto & event : this->events_queue) { + this->handle_event(event.type, event.channel, *event.event.get()); + } + this->events_queue.clear(); +} + +void EventManager::handle_event(type_index type, event_channel_t channel, const Event & data) { + auto handlers_it = this->subscribers.find(type); + if (handlers_it == this->subscribers.end()) return; + + vector<CallbackEntry> & handlers = handlers_it->second; + for (auto & handler : handlers) { + bool check_channel = handler.channel != CHANNEL_ALL || channel != CHANNEL_ALL; + if (check_channel && handler.channel != channel) continue; + + bool handled = handler.callback->exec(data); + if (handled) return; + } +} + +void EventManager::clear() { + this->subscribers.clear(); + this->events_queue.clear(); +} + +void EventManager::unsubscribe(subscription_t id) { + for (auto & [event_type, handlers] : this->subscribers) { + for (auto it = handlers.begin(); it != handlers.end(); it++) { + // find listener with subscription id + if ((*it).id != id) continue; + it = handlers.erase(it); + return; + } + } +} diff --git a/src/crepe/manager/EventManager.h b/src/crepe/manager/EventManager.h new file mode 100644 index 0000000..639e37f --- /dev/null +++ b/src/crepe/manager/EventManager.h @@ -0,0 +1,148 @@ +#pragma once + +#include <memory> +#include <typeindex> +#include <unordered_map> +#include <vector> + +#include "../api/Event.h" +#include "../api/EventHandler.h" + +#include "Manager.h" + +namespace crepe { + +//! Event listener unique ID +typedef size_t subscription_t; + +/** + * \brief Event channel + * + * Events can be sent to a specific channel, which prevents listeners on other channels from + * being called. The default channel is EventManager::CHANNEL_ALL, which calls all listeners. + */ +typedef size_t event_channel_t; + +/** + * \brief Manages event subscriptions, triggers, and queues, enabling decoupled event handling. + * + * The `EventManager` acts as a centralized event system. It allows for registering callbacks + * for specific event types, triggering events synchronously, queueing events for later + * processing, and managing subscriptions via unique identifiers. + */ +class EventManager : public Manager { +public: + static constexpr const event_channel_t CHANNEL_ALL = -1; + /** + * \param mediator A reference to a Mediator object used for transfering managers. + */ + EventManager(Mediator & mediator); + /** + * \brief Subscribe to a specific event type. + * + * Registers a callback for a given event type and optional channel. Each callback + * is assigned a unique subscription ID that can be used for later unsubscription. + * + * \tparam EventType The type of the event to subscribe to. + * \param callback The callback function to be invoked when the event is triggered. + * \param channel The channel number to subscribe to (default is CHANNEL_ALL, which listens to all channels). + * \return A unique subscription ID associated with the registered callback. + */ + template <typename EventType> + subscription_t subscribe(const EventHandler<EventType> & callback, + event_channel_t channel = CHANNEL_ALL); + + /** + * \brief Unsubscribe a previously registered callback. + * + * Removes a callback from the subscription list based on its unique subscription ID. + * + * \param event_id The unique subscription ID of the callback to remove. + */ + void unsubscribe(subscription_t event_id); + + /** + * \brief Trigger an event immediately. + * + * Synchronously invokes all registered callbacks for the given event type on the specified channel. + * + * \tparam EventType The type of the event to trigger. + * \param event The event instance to pass to the callbacks. + * \param channel The channel to trigger the event on (default is CHANNEL_ALL, which triggers on all channels). + */ + template <typename EventType> + void trigger_event(const EventType & event = {}, event_channel_t channel = CHANNEL_ALL); + + /** + * \brief Queue an event for later processing. + * + * Adds an event to the event queue to be processed during the next call to `dispatch_events`. + * + * \tparam EventType The type of the event to queue. + * \param event The event instance to queue. + * \param channel The channel to associate with the event (default is CHANNEL_ALL). + */ + template <typename EventType> + void queue_event(const EventType & event = {}, event_channel_t channel = CHANNEL_ALL); + + /** + * \brief Process all queued events. + * + * Iterates through the event queue and triggers callbacks for each queued event. + * Events are removed from the queue once processed. + */ + void dispatch_events(); + + /** + * \brief Clear all subscriptions. + * + * Removes all registered event handlers and clears the subscription list. + */ + void clear(); + +private: + /** + * \struct QueueEntry + * \brief Represents an entry in the event queue. + */ + struct QueueEntry { + std::unique_ptr<Event> event; ///< The event instance. + event_channel_t channel = CHANNEL_ALL; ///< The channel associated with the event. + std::type_index type; ///< The type of the event. + }; + + /** + * \brief Internal event handler + * + * This function processes a single event, and is used to process events both during + * EventManager::dispatch_events and inside EventManager::trigger_event + * + * \param type \c typeid of concrete Event class + * \param channel Event channel + * \param data Event data + */ + void handle_event(std::type_index type, event_channel_t channel, const Event & data); + + /** + * \struct CallbackEntry + * \brief Represents a registered event handler callback. + */ + struct CallbackEntry { + std::unique_ptr<IEventHandlerWrapper> callback; ///< The callback function wrapper. + event_channel_t channel = CHANNEL_ALL; ///< The channel this callback listens to. + subscription_t id = -1; ///< Unique subscription ID. + }; + + //! The queue of events to be processed during dispatch. + std::vector<QueueEntry> events_queue; + + //! A map of event type to registered callbacks. + std::unordered_map<std::type_index, std::vector<CallbackEntry>> subscribers; + + //! Counter to generate unique subscription IDs. + subscription_t subscription_counter = 0; +}; + +} // namespace crepe + +#include "EventManager.hpp" diff --git a/src/crepe/manager/EventManager.hpp b/src/crepe/manager/EventManager.hpp new file mode 100644 index 0000000..a5f4556 --- /dev/null +++ b/src/crepe/manager/EventManager.hpp @@ -0,0 +1,36 @@ +#pragma once + +#include "EventManager.h" + +namespace crepe { + +template <typename EventType> +subscription_t EventManager::subscribe(const EventHandler<EventType> & callback, + event_channel_t channel) { + subscription_counter++; + std::type_index event_type = typeid(EventType); + std::unique_ptr<EventHandlerWrapper<EventType>> handler + = std::make_unique<EventHandlerWrapper<EventType>>(callback); + std::vector<CallbackEntry> & handlers = this->subscribers[event_type]; + handlers.emplace_back(CallbackEntry{ + .callback = std::move(handler), .channel = channel, .id = subscription_counter}); + return subscription_counter; +} + +template <typename EventType> +void EventManager::queue_event(const EventType & event, event_channel_t channel) { + static_assert(std::is_base_of<Event, EventType>::value, + "EventType must derive from Event"); + this->events_queue.push_back(QueueEntry{ + .event = std::make_unique<EventType>(event), + .channel = channel, + .type = typeid(EventType), + }); +} + +template <typename EventType> +void EventManager::trigger_event(const EventType & event, event_channel_t channel) { + this->handle_event(typeid(EventType), channel, event); +} + +} // namespace crepe diff --git a/src/crepe/manager/LoopTimerManager.cpp b/src/crepe/manager/LoopTimerManager.cpp new file mode 100644 index 0000000..e78f92f --- /dev/null +++ b/src/crepe/manager/LoopTimerManager.cpp @@ -0,0 +1,91 @@ +#include <chrono> +#include <thread> + +#include "../util/dbg.h" + +#include "LoopTimerManager.h" + +using namespace crepe; +using namespace std::chrono; +using namespace std::chrono_literals; + +LoopTimerManager::LoopTimerManager(Mediator & mediator) : Manager(mediator) { + this->mediator.loop_timer = *this; + dbg_trace(); +} + +void LoopTimerManager::start() { + this->last_frame_time = std::chrono::steady_clock::now(); + + this->elapsed_time = elapsed_time_t{0}; + this->elapsed_fixed_time = elapsed_time_t{0}; + this->delta_time = duration_t{0}; +} + +void LoopTimerManager::update() { + time_point_t current_frame_time = std::chrono::steady_clock::now(); + // Convert to duration in seconds for delta time + this->delta_time = current_frame_time - last_frame_time; + + if (this->delta_time > this->maximum_delta_time) { + this->delta_time = this->maximum_delta_time; + } + if (this->delta_time > 0s) { + this->actual_fps = static_cast<unsigned>(1.0 / this->delta_time.count()); + } else { + this->actual_fps = 0; + } + this->elapsed_time += duration_cast<elapsed_time_t>(this->delta_time); + this->last_frame_time = current_frame_time; +} + +duration_t LoopTimerManager::get_delta_time() const { + return this->delta_time * this->time_scale; +} + +elapsed_time_t LoopTimerManager::get_elapsed_time() const { return this->elapsed_time; } + +void LoopTimerManager::advance_fixed_elapsed_time() { + this->elapsed_fixed_time + += std::chrono::duration_cast<elapsed_time_t>(this->fixed_delta_time); +} + +void LoopTimerManager::set_target_framerate(unsigned fps) { + this->target_fps = fps; + //check if fps is lower or equals 0 + if (fps <= 0) return; + // target time per frame in seconds + this->frame_target_time = duration_t(1s) / this->target_fps; +} + +unsigned LoopTimerManager::get_fps() const { return this->actual_fps; } + +void LoopTimerManager::set_time_scale(double value) { this->time_scale = value; } + +float LoopTimerManager::get_time_scale() const { return this->time_scale; } + +void LoopTimerManager::enforce_frame_rate() { + time_point_t current_frame_time = std::chrono::steady_clock::now(); + duration_t frame_duration = current_frame_time - this->last_frame_time; + // Check if frame duration is less than the target frame time + if (frame_duration < this->frame_target_time) { + duration_t delay_time = this->frame_target_time - frame_duration; + if (delay_time > 0s) { + std::this_thread::sleep_for(delay_time); + } + } +} + +duration_t LoopTimerManager::get_lag() const { + return this->elapsed_time - this->elapsed_fixed_time; +} + +duration_t LoopTimerManager::get_scaled_fixed_delta_time() const { + return this->fixed_delta_time * this->time_scale; +} + +void LoopTimerManager::set_fixed_delta_time(float seconds) { + this->fixed_delta_time = duration_t(seconds); +} + +duration_t LoopTimerManager::get_fixed_delta_time() const { return this->fixed_delta_time; } diff --git a/src/crepe/manager/LoopTimerManager.h b/src/crepe/manager/LoopTimerManager.h new file mode 100644 index 0000000..2f1e6b6 --- /dev/null +++ b/src/crepe/manager/LoopTimerManager.h @@ -0,0 +1,177 @@ +#pragma once + +#include <chrono> + +#include "Manager.h" + +namespace crepe { + +class Engine; + +typedef std::chrono::duration<float> duration_t; +typedef std::chrono::duration<unsigned long long, std::micro> elapsed_time_t; + +/** + * \brief Manages timing and frame rate for the game loop. + * + * The LoopTimerManager class is responsible for calculating and managing timing functions + * such as delta time, frames per second (FPS), fixed time steps, and time scaling. It ensures + * consistent frame updates and supports game loop operations, such as handling fixed updates + * for physics and other time-sensitive operations. + */ +class LoopTimerManager : public Manager { +public: + /** + * \param mediator A reference to a Mediator object used for transfering managers. + */ + LoopTimerManager(Mediator & mediator); + /** + * \brief Get the current delta time for the current frame. + * + * This value represents the estimated frame duration of the current frame. + * This value can be used in the frame_update to convert pixel based values to time based values. + * + * \return Delta time in seconds since the last frame. + */ + duration_t get_delta_time() const; + + /** + * \brief Get the current elapsed time (total time passed ) + * + * \note The current game time may vary from real-world elapsed time. It is the cumulative + * sum of each frame's delta time. + * + * \return Elapsed game time in seconds. + */ + elapsed_time_t get_elapsed_time() const; + + /** + * \brief Set the target frames per second (FPS). + * + * \param fps The desired frames rendered per second. + */ + void set_target_framerate(unsigned fps); + + /** + * \brief Get the current frames per second (FPS). + * + * \return Current FPS. + */ + unsigned int get_fps() const; + + /** + * \brief Get the current time scale. + * + * \return The current time scale, where (0 = pause, < 1 = slow down, 1 = normal speed, > 1 = speed up). + * up the game. + */ + float get_time_scale() const; + + /** + * \brief Set the time scale. + * + * time_scale is a value that changes the delta time that can be retrieved using get_delta_time function. + * + * \param time_scale The desired time scale (0 = pause, < 1 = slow down, 1 = normal speed, > 1 = speed up). + */ + void set_time_scale(double time_scale); + + /** + * \brief Get the fixed delta time in seconds without scaling by the time scale. + * + * This value is used in the LoopManager to determine how many times + * the fixed_update should be called within a given interval. + * + * \return The unscaled fixed delta time in seconds. + */ + duration_t get_fixed_delta_time() const; + + /** + * \brief Set the fixed_delta_time in seconds. + * + * \param seconds fixed_delta_time in seconds. + * + * The fixed_delta_time value is used to determine how many times per second the fixed_update and process_input functions are called. + * + */ + void set_fixed_delta_time(float seconds); + + /** + * \brief Retrieves the scaled fixed delta time in seconds. + * + * The scaled fixed delta time is the timing value used within the `fixed_update` function. + * It is adjusted by the time_scale to account for any changes in the simulation's + * speed. + * + * \return The fixed delta time, scaled by the current time scale, in seconds. + */ + duration_t get_scaled_fixed_delta_time() const; + +private: + //! Friend relation to use start,enforce_frame_rate,get_lag,update,advance_fixed_update. + friend class Engine; + /** + * \brief Start the loop timer. + * + * Initializes the timer to begin tracking frame times. + */ + void start(); + /** + * \brief Enforce the frame rate limit. + * + * Ensures that the game loop does not exceed the target FPS by delaying frame updates as + * necessary. + */ + void enforce_frame_rate(); + /** + * \brief Get the accumulated lag in the game loop. + * + * Lag represents the difference between the target frame time and the actual frame time, + * useful for managing fixed update intervals. + * + * \return Accumulated lag in seconds. + */ + duration_t get_lag() const; + + /** + * \brief Update the timer to the current frame. + * + * Calculates and updates the delta time for the current frame and adds it to the cumulative + * game time. + */ + void update(); + + /** + * \brief Progress the elapsed fixed time by the fixed delta time interval. + * + * This method advances the game's fixed update loop by adding the fixed_delta_time + * to elapsed_fixed_time, ensuring the fixed update catches up with the elapsed time. + */ + void advance_fixed_elapsed_time(); + +private: + //! Target frames per second. + unsigned int target_fps = 60; + //! Actual frames per second. + unsigned int actual_fps = 0; + //! Time scale for speeding up or slowing down the game (0 = pause, < 1 = slow down, 1 = normal speed, > 1 = speed up). + float time_scale = 1; + //! Maximum delta time in seconds to avoid large jumps. + duration_t maximum_delta_time{0.25}; + //! Delta time for the current frame in seconds. + duration_t delta_time{0.0}; + //! Target time per frame in seconds + duration_t frame_target_time{1.0 / target_fps}; + //! Fixed delta time for fixed updates in seconds. + duration_t fixed_delta_time{1.0 / 50.0}; + //! Total elapsed game time in microseconds. + elapsed_time_t elapsed_time{0}; + //! Total elapsed time for fixed updates in microseconds. + elapsed_time_t elapsed_fixed_time{0}; + + typedef std::chrono::steady_clock::time_point time_point_t; + //! Time of the last frame. + time_point_t last_frame_time; +}; + +} // namespace crepe diff --git a/src/crepe/manager/Manager.cpp b/src/crepe/manager/Manager.cpp new file mode 100644 index 0000000..1182785 --- /dev/null +++ b/src/crepe/manager/Manager.cpp @@ -0,0 +1,5 @@ +#include "Manager.h" + +using namespace crepe; + +Manager::Manager(Mediator & mediator) : mediator(mediator) {} diff --git a/src/crepe/manager/Manager.h b/src/crepe/manager/Manager.h new file mode 100644 index 0000000..84d80fe --- /dev/null +++ b/src/crepe/manager/Manager.h @@ -0,0 +1,24 @@ +#pragma once + +#include "Mediator.h" + +namespace crepe { + +/** + * \brief Base manager class + * + * Managers are used for various tasks that fall outside the ECS system category. All managers + * are required to register themselves to the mediator passed to the constructor, and this + * mutable reference is saved for convenience, even though not all managers use the mediator + * directly. + */ +class Manager { +public: + Manager(Mediator & mediator); + virtual ~Manager() = default; + +protected: + Mediator & mediator; +}; + +} // namespace crepe diff --git a/src/crepe/manager/Mediator.h b/src/crepe/manager/Mediator.h new file mode 100644 index 0000000..842f1de --- /dev/null +++ b/src/crepe/manager/Mediator.h @@ -0,0 +1,41 @@ +#pragma once + +#include "../util/OptionalRef.h" + +namespace crepe { + +class ComponentManager; +class SceneManager; +class EventManager; +class LoopTimerManager; +class SaveManager; +class ResourceManager; +class SDLContext; +class ReplayManager; +class SystemManager; + +/** + * Struct to pass references to classes that would otherwise need to be singletons down to + * other classes within the engine hierarchy. Made to prevent constant changes to subclasses to + * pass specific references through dependency injection. All references on this struct + * *should* be explicitly checked for availability as this struct does not guarantee anything. + * + * \note Dereferencing members of this struct should be deferred. If you are a user of this + * class, keep a reference to this mediator instead of just picking references from it when you + * receive an instance. + * + * \warning This class should never be directly accessible from the API + */ +struct Mediator { + OptionalRef<SDLContext> sdl_context; + OptionalRef<ComponentManager> component_manager; + OptionalRef<SceneManager> scene_manager; + OptionalRef<EventManager> event_manager; + OptionalRef<LoopTimerManager> loop_timer; + OptionalRef<SaveManager> save_manager; + OptionalRef<ResourceManager> resource_manager; + OptionalRef<ReplayManager> replay_manager; + OptionalRef<SystemManager> system_manager; +}; + +} // namespace crepe diff --git a/src/crepe/manager/ReplayManager.cpp b/src/crepe/manager/ReplayManager.cpp new file mode 100644 index 0000000..090a94e --- /dev/null +++ b/src/crepe/manager/ReplayManager.cpp @@ -0,0 +1,70 @@ +#include <format> + +#include "Manager.h" +#include "ReplayManager.h" + +using namespace crepe; +using namespace std; + +ReplayManager::ReplayManager(Mediator & mediator) : Manager(mediator) { + mediator.replay_manager = *this; +} + +void ReplayManager::record_start() { + if (this->state == RECORDING) this->release(this->id); + this->id++; + this->memory[this->id] = make_unique<Recording>(); + this->recording = *this->memory.at(this->id); + this->state = RECORDING; +} + +recording_t ReplayManager::record_end() { + this->state = IDLE; + return this->id; +} + +void ReplayManager::play(recording_t handle) { + if (!this->memory.contains(handle)) + throw out_of_range(format("ReplayManager: no recording for handle {}", handle)); + this->recording = *this->memory.at(handle); + this->recording->frame = 0; + this->state = PLAYING; +} + +void ReplayManager::release(recording_t handle) { + if (!this->memory.contains(handle)) return; + this->memory.erase(handle); +} + +void ReplayManager::frame_record() { + if (this->state != RECORDING) + throw runtime_error("ReplayManager: frame_step called while not playing"); + + ComponentManager & components = this->mediator.component_manager; + Recording & recording = this->recording; + + recording.frames.push_back(components.save()); + recording.frame++; +} + +bool ReplayManager::frame_step() { + if (this->state != PLAYING) + throw runtime_error("ReplayManager: frame_step called while not playing"); + + ComponentManager & components = this->mediator.component_manager; + Recording & recording = this->recording; + + ComponentManager::Snapshot & frame = recording.frames.at(recording.frame); + + components.restore(frame); + recording.frame++; + + if (recording.frame < recording.frames.size()) return false; + // end of recording + recording.frame = 0; + this->state = IDLE; + this->recording.clear(); + return true; +} + +ReplayManager::State ReplayManager::get_state() const { return this->state; } diff --git a/src/crepe/manager/ReplayManager.h b/src/crepe/manager/ReplayManager.h new file mode 100644 index 0000000..f06a58b --- /dev/null +++ b/src/crepe/manager/ReplayManager.h @@ -0,0 +1,96 @@ +#pragma once + +#include <unordered_map> + +#include "../util/OptionalRef.h" + +#include "ComponentManager.h" +#include "Manager.h" + +namespace crepe { + +//! Handle to recording held by ReplayManager +typedef size_t recording_t; + +/** + * \brief Replay manager + * + * The replay manager is responsible for creating, storing and restoring ComponentManager + * snapshots. Sequential snapshots can be recorded and replayed in combination with + * ReplaySystem. + */ +class ReplayManager : public Manager { + // TODO: Delete recordings at end of scene + +public: + ReplayManager(Mediator & mediator); + +public: + //! Start a new recording + void record_start(); + /** + * \brief End the latest recording started by \c record_start() + * \returns Handle to recording + */ + recording_t record_end(); + /** + * \brief Play a recording + * \param handle Handle to recording (as returned by \c record_end()) + */ + void play(recording_t handle); + /** + * \brief Delete a recording from memory + * \param handle Handle to recording (as returned by \c record_end()) + */ + void release(recording_t handle); + +public: + //! Internal state + enum State { + IDLE, //!< Not doing anything + RECORDING, //!< Currently recording + PLAYING, //!< Currently playing back a recording + }; + //! Get current internal state + State get_state() const; + +public: + /** + * \brief Record a single frame to the current recording + * + * This function is called by ReplaySystem after the game programmer has called \c + * record_start() + */ + void frame_record(); + /** + * \brief Play the next frame of the current recording + * + * \returns `true` if the recording is finished playing + * \returns `false` if there are more frames + * + * This function also automatically resets the internal state from PLAYING to IDLE at the end + * of a recording. + */ + bool frame_step(); + +private: + /** + * \brief Recording data + */ + struct Recording { + //! Current frame being shown + size_t frame = 0; + //! All frames in recording + std::vector<ComponentManager::Snapshot> frames; + }; + //! Internal state + State state = IDLE; + //! Current recording handle + recording_t id = -1; + //! Current recording data + OptionalRef<Recording> recording; + //! Recording storage + std::unordered_map<recording_t, std::unique_ptr<Recording>> memory; +}; + +} // namespace crepe diff --git a/src/crepe/manager/ResourceManager.cpp b/src/crepe/manager/ResourceManager.cpp new file mode 100644 index 0000000..5713183 --- /dev/null +++ b/src/crepe/manager/ResourceManager.cpp @@ -0,0 +1,30 @@ +#include "util/dbg.h" + +#include "ResourceManager.h" + +using namespace crepe; +using namespace std; + +ResourceManager::ResourceManager(Mediator & mediator) : Manager(mediator) { + dbg_trace(); + mediator.resource_manager = *this; +} +ResourceManager::~ResourceManager() { dbg_trace(); } + +void ResourceManager::clear() { + std::erase_if(this->resources, [](const pair<const Asset, CacheEntry> & pair) { + const CacheEntry & entry = pair.second; + return entry.persistent == false; + }); +} + +void ResourceManager::clear_all() { this->resources.clear(); } + +void ResourceManager::set_persistent(const Asset & asset, bool persistent) { + this->get_entry(asset).persistent = persistent; +} + +ResourceManager::CacheEntry & ResourceManager::get_entry(const Asset & asset) { + if (!this->resources.contains(asset)) this->resources[asset] = {}; + return this->resources.at(asset); +} diff --git a/src/crepe/manager/ResourceManager.h b/src/crepe/manager/ResourceManager.h new file mode 100644 index 0000000..84b275d --- /dev/null +++ b/src/crepe/manager/ResourceManager.h @@ -0,0 +1,78 @@ +#pragma once + +#include <memory> +#include <unordered_map> + +#include "../Resource.h" +#include "../api/Asset.h" + +#include "Manager.h" + +namespace crepe { + +/** + * \brief Owner of concrete Resource instances + * + * ResourceManager caches concrete Resource instances per Asset. Concrete resources are + * destroyed at the end of scenes by default, unless the game programmer marks them as + * persistent. + */ +class ResourceManager : public Manager { +public: + ResourceManager(Mediator & mediator); + virtual ~ResourceManager(); // dbg_trace + +private: + //! Cache entry + struct CacheEntry { + //! Concrete resource instance + std::unique_ptr<Resource> resource = nullptr; + //! Prevent ResourceManager::clear from removing this entry + bool persistent = false; + }; + //! Internal cache + std::unordered_map<const Asset, CacheEntry> resources; + /** + * \brief Ensure a cache entry exists for this asset and return a mutable reference to it + * + * \param asset Asset the concrete resource is instantiated from + * + * \returns Mutable reference to cache entry + */ + CacheEntry & get_entry(const Asset & asset); + +public: + /** + * \brief Mark a resource as persistent (i.e. used across multiple scenes) + * + * \param asset Asset the concrete resource is instantiated from + * \param persistent Whether this resource is persistent (true=keep, false=destroy) + */ + void set_persistent(const Asset & asset, bool persistent); + + /** + * \brief Retrieve reference to concrete Resource by Asset + * + * \param asset Asset the concrete resource is instantiated from + * \tparam Resource Concrete derivative of Resource + * + * This class instantiates the concrete resource if it is not yet stored in the internal + * cache, or returns a reference to the cached resource if it already exists. + * + * \returns Reference to concrete resource + * + * \throws std::runtime_error if the \c Resource parameter does not match with the actual + * type of the resource stored in the cache for this Asset + */ + template <typename Resource> + Resource & get(const Asset & asset); + + //! Clear non-persistent resources from cache + void clear(); + //! Clear all resources from cache regardless of persistence + void clear_all(); +}; + +} // namespace crepe + +#include "ResourceManager.hpp" diff --git a/src/crepe/manager/ResourceManager.hpp b/src/crepe/manager/ResourceManager.hpp new file mode 100644 index 0000000..cf5c949 --- /dev/null +++ b/src/crepe/manager/ResourceManager.hpp @@ -0,0 +1,27 @@ +#pragma once + +#include <format> + +#include "ResourceManager.h" + +namespace crepe { + +template <typename T> +T & ResourceManager::get(const Asset & asset) { + using namespace std; + static_assert(is_base_of<Resource, T>::value, + "cache must recieve a derivative class of Resource"); + + CacheEntry & entry = this->get_entry(asset); + if (entry.resource == nullptr) entry.resource = make_unique<T>(asset, this->mediator); + + T * concrete_resource = dynamic_cast<T *>(entry.resource.get()); + if (concrete_resource == nullptr) + throw runtime_error(format("ResourceManager: mismatch between requested type and " + "actual type of resource ({})", + asset.get_path())); + + return *concrete_resource; +} + +} // namespace crepe diff --git a/src/crepe/manager/SaveManager.cpp b/src/crepe/manager/SaveManager.cpp new file mode 100644 index 0000000..f313ed2 --- /dev/null +++ b/src/crepe/manager/SaveManager.cpp @@ -0,0 +1,169 @@ +#include "../ValueBroker.h" +#include "../api/Config.h" +#include "../facade/DB.h" + +#include "SaveManager.h" + +using namespace std; +using namespace crepe; + +SaveManager::SaveManager(Mediator & mediator) : Manager(mediator) { + mediator.save_manager = *this; +} + +DB & SaveManager::get_db() { + if (this->db == nullptr) { + Config & cfg = Config::get_instance(); + this->db + = {new DB(cfg.savemgr.location), [](void * db) { delete static_cast<DB *>(db); }}; + } + return *static_cast<DB *>(this->db.get()); +} + +template <> +string SaveManager::serialize(const string & value) const noexcept { + return value; +} +template <typename T> +string SaveManager::serialize(const T & value) const noexcept { + return to_string(value); +} +template string SaveManager::serialize(const uint8_t &) const noexcept; +template string SaveManager::serialize(const int8_t &) const noexcept; +template string SaveManager::serialize(const uint16_t &) const noexcept; +template string SaveManager::serialize(const int16_t &) const noexcept; +template string SaveManager::serialize(const uint32_t &) const noexcept; +template string SaveManager::serialize(const int32_t &) const noexcept; +template string SaveManager::serialize(const uint64_t &) const noexcept; +template string SaveManager::serialize(const int64_t &) const noexcept; +template string SaveManager::serialize(const float &) const noexcept; +template string SaveManager::serialize(const double &) const noexcept; + +template <> +uint64_t SaveManager::deserialize(const string & value) const noexcept { + try { + return stoul(value); + } catch (std::invalid_argument &) { + return 0; + } +} +template <> +int64_t SaveManager::deserialize(const string & value) const noexcept { + try { + return stol(value); + } catch (std::invalid_argument &) { + return 0; + } +} +template <> +float SaveManager::deserialize(const string & value) const noexcept { + try { + return stof(value); + } catch (std::invalid_argument &) { + return 0; + } + return stof(value); +} +template <> +double SaveManager::deserialize(const string & value) const noexcept { + try { + return stod(value); + } catch (std::invalid_argument &) { + return 0; + } +} +template <> +string SaveManager::deserialize(const string & value) const noexcept { + return value; +} + +template <> +uint8_t SaveManager::deserialize(const string & value) const noexcept { + return deserialize<uint64_t>(value); +} +template <> +int8_t SaveManager::deserialize(const string & value) const noexcept { + return deserialize<int64_t>(value); +} +template <> +uint16_t SaveManager::deserialize(const string & value) const noexcept { + return deserialize<uint64_t>(value); +} +template <> +int16_t SaveManager::deserialize(const string & value) const noexcept { + return deserialize<int64_t>(value); +} +template <> +uint32_t SaveManager::deserialize(const string & value) const noexcept { + return deserialize<uint64_t>(value); +} +template <> +int32_t SaveManager::deserialize(const string & value) const noexcept { + return deserialize<int64_t>(value); +} + +bool SaveManager::has(const string & key) { + DB & db = this->get_db(); + return db.has(key); +} + +template <> +void SaveManager::set(const string & key, const string & value) { + DB & db = this->get_db(); + db.set(key, value); +} +template <typename T> +void SaveManager::set(const string & key, const T & value) { + DB & db = this->get_db(); + db.set(key, std::to_string(value)); +} +template void SaveManager::set(const string &, const uint8_t &); +template void SaveManager::set(const string &, const int8_t &); +template void SaveManager::set(const string &, const uint16_t &); +template void SaveManager::set(const string &, const int16_t &); +template void SaveManager::set(const string &, const uint32_t &); +template void SaveManager::set(const string &, const int32_t &); +template void SaveManager::set(const string &, const uint64_t &); +template void SaveManager::set(const string &, const int64_t &); +template void SaveManager::set(const string &, const float &); +template void SaveManager::set(const string &, const double &); + +template <typename T> +T SaveManager::get(const string & key) { + return this->deserialize<T>(this->get_db().get(key)); +} +template uint8_t SaveManager::get(const string &); +template int8_t SaveManager::get(const string &); +template uint16_t SaveManager::get(const string &); +template int16_t SaveManager::get(const string &); +template uint32_t SaveManager::get(const string &); +template int32_t SaveManager::get(const string &); +template uint64_t SaveManager::get(const string &); +template int64_t SaveManager::get(const string &); +template float SaveManager::get(const string &); +template double SaveManager::get(const string &); +template string SaveManager::get(const string &); + +template <typename T> +ValueBroker<T> SaveManager::get(const string & key, const T & default_value) { + if (!this->has(key)) this->set<T>(key, default_value); + T value; + return { + [this, key](const T & target) { this->set<T>(key, target); }, + [this, key, value]() mutable -> const T & { + value = this->get<T>(key); + return value; + }, + }; +} +template ValueBroker<uint8_t> SaveManager::get(const string &, const uint8_t &); +template ValueBroker<int8_t> SaveManager::get(const string &, const int8_t &); +template ValueBroker<uint16_t> SaveManager::get(const string &, const uint16_t &); +template ValueBroker<int16_t> SaveManager::get(const string &, const int16_t &); +template ValueBroker<uint32_t> SaveManager::get(const string &, const uint32_t &); +template ValueBroker<int32_t> SaveManager::get(const string &, const int32_t &); +template ValueBroker<uint64_t> SaveManager::get(const string &, const uint64_t &); +template ValueBroker<int64_t> SaveManager::get(const string &, const int64_t &); +template ValueBroker<float> SaveManager::get(const string &, const float &); +template ValueBroker<double> SaveManager::get(const string &, const double &); +template ValueBroker<string> SaveManager::get(const string &, const string &); diff --git a/src/crepe/manager/SaveManager.h b/src/crepe/manager/SaveManager.h new file mode 100644 index 0000000..1e34bc0 --- /dev/null +++ b/src/crepe/manager/SaveManager.h @@ -0,0 +1,104 @@ +#pragma once + +#include <functional> +#include <memory> + +#include "../ValueBroker.h" + +#include "Manager.h" + +namespace crepe { + +class DB; + +/** + * \brief Save data manager + * + * This class provides access to a simple key-value store that stores + * - integers (8-64 bit, signed or unsigned) + * - real numbers (float or double) + * - string (std::string) + * + * The underlying database is a key-value store. + */ +class SaveManager : public Manager { +public: + /** + * \brief Get a read/write reference to a value and initialize it if it does not yet exist + * + * \param key The value key + * \param default_value Value to initialize \c key with if it does not already exist in the + * database + * + * \return Read/write reference to the value + */ + template <typename T> + ValueBroker<T> get(const std::string & key, const T & default_value); + + /** + * \brief Get a value directly + * + * \param key The value key + * + * \return The value + * + * \note Attempting to read this value before it is initialized (i.e. set) will result in an + * exception + */ + template <typename T> + T get(const std::string & key); + + /** + * \brief Set a value directly + * + * \param key The value key + * \param value The value to store + */ + template <typename T> + void set(const std::string & key, const T & value); + + /** + * \brief Check if the save file has a value for this \c key + * + * \param key The value key + * + * \returns True if the key exists, or false if it does not + */ + bool has(const std::string & key); + +public: + SaveManager(Mediator & mediator); + virtual ~SaveManager() = default; + +private: + /** + * \brief Serialize an arbitrary value to STL string + * + * \tparam T Type of arbitrary value + * + * \returns String representation of value + */ + template <typename T> + std::string serialize(const T &) const noexcept; + + /** + * \brief Deserialize an STL string back to type \c T + * + * \tparam T Type of value + * \param value Serialized value + * + * \returns Deserialized value + */ + template <typename T> + T deserialize(const std::string & value) const noexcept; + +protected: + //! Create or return DB + virtual DB & get_db(); + +private: + //! Database + std::unique_ptr<void, std::function<void(void *)>> db = nullptr; +}; + +} // namespace crepe diff --git a/src/crepe/manager/SceneManager.cpp b/src/crepe/manager/SceneManager.cpp new file mode 100644 index 0000000..d4ca90b --- /dev/null +++ b/src/crepe/manager/SceneManager.cpp @@ -0,0 +1,38 @@ +#include <algorithm> +#include <memory> + +#include "ComponentManager.h" +#include "SceneManager.h" + +using namespace crepe; +using namespace std; + +SceneManager::SceneManager(Mediator & mediator) : Manager(mediator) { + mediator.scene_manager = *this; +} + +void SceneManager::set_next_scene(const string & name) { next_scene = name; } + +void SceneManager::load_next_scene() { + // next scene not set + if (this->next_scene.empty()) return; + + auto it = find_if(this->scenes.begin(), this->scenes.end(), + [&next_scene = this->next_scene](unique_ptr<Scene> & scene) { + return scene.get()->get_name() == next_scene; + }); + + // next scene not found + if (it == this->scenes.end()) return; + unique_ptr<Scene> & scene = *it; + + // Delete all components of the current scene + ComponentManager & mgr = this->mediator.component_manager; + mgr.delete_all_components(); + + // Load the new scene + scene->load_scene(); + + //clear the next scene + next_scene.clear(); +} diff --git a/src/crepe/manager/SceneManager.h b/src/crepe/manager/SceneManager.h new file mode 100644 index 0000000..e0955c2 --- /dev/null +++ b/src/crepe/manager/SceneManager.h @@ -0,0 +1,52 @@ +#pragma once + +#include <memory> +#include <vector> + +#include "../api/Scene.h" + +#include "Manager.h" + +namespace crepe { + +class ComponentManager; + +/** + * \brief Manages scenes + * + * This class manages scenes. It can add new scenes and load them. It also manages the current scene + * and the next scene. + */ +class SceneManager : public Manager { +public: + SceneManager(Mediator & mediator); + +public: + /** + * \brief Add a new concrete scene to the scene manager + * + * \tparam T Type of concrete scene + */ + template <typename T, typename... Args> + void add_scene(Args &&... args); + /** + * \brief Set the next scene + * + * This scene will be loaded at the end of the frame + * + * \param name Name of the next scene + */ + void set_next_scene(const std::string & name); + //! Load a new scene (if there is one) + void load_next_scene(); + +private: + //! Vector of concrete scenes (added by add_scene()) + std::vector<std::unique_ptr<Scene>> scenes; + //! Next scene to load + std::string next_scene; +}; + +} // namespace crepe + +#include "SceneManager.hpp" diff --git a/src/crepe/manager/SceneManager.hpp b/src/crepe/manager/SceneManager.hpp new file mode 100644 index 0000000..dff4e51 --- /dev/null +++ b/src/crepe/manager/SceneManager.hpp @@ -0,0 +1,25 @@ +#pragma once + +#include "SceneManager.h" + +namespace crepe { + +template <typename T, typename... Args> +void SceneManager::add_scene(Args &&... args) { + using namespace std; + static_assert(is_base_of<Scene, T>::value, "T must be derived from Scene"); + + Scene * scene = new T(std::forward<Args>(args)...); + unique_ptr<Scene> unique_scene(scene); + + unique_scene->mediator = this->mediator; + + this->scenes.emplace_back(std::move(unique_scene)); + + // The first scene added, is the one that will be loaded at the beginning + if (next_scene.empty()) { + next_scene = scene->get_name(); + } +} + +} // namespace crepe diff --git a/src/crepe/manager/SystemManager.cpp b/src/crepe/manager/SystemManager.cpp new file mode 100644 index 0000000..5ada30f --- /dev/null +++ b/src/crepe/manager/SystemManager.cpp @@ -0,0 +1,66 @@ +#include "../system/AISystem.h" +#include "../system/AnimatorSystem.h" +#include "../system/AudioSystem.h" +#include "../system/CollisionSystem.h" +#include "../system/EventSystem.h" +#include "../system/InputSystem.h" +#include "../system/ParticleSystem.h" +#include "../system/PhysicsSystem.h" +#include "../system/RenderSystem.h" +#include "../system/ReplaySystem.h" +#include "../system/ScriptSystem.h" + +#include "SystemManager.h" + +using namespace crepe; +using namespace std; + +SystemManager::SystemManager(Mediator & mediator) : Manager(mediator) { + this->load_system<InputSystem>(); + this->load_system<EventSystem>(); + this->load_system<ScriptSystem>(); + this->load_system<AISystem>(); + this->load_system<PhysicsSystem>(); + this->load_system<CollisionSystem>(); + this->load_system<AudioSystem>(); + this->load_system<AnimatorSystem>(); + this->load_system<ParticleSystem>(); + this->load_system<RenderSystem>(); + this->load_system<ReplaySystem>(); + + this->mediator.system_manager = *this; +} + +void SystemManager::fixed_update() { + for (auto & [type, system] : this->systems) { + if (!system->active) continue; + system->fixed_update(); + } +} + +void SystemManager::frame_update() { + for (auto & [type, system] : this->systems) { + if (!system->active) continue; + system->frame_update(); + } +} + +SystemManager::Snapshot SystemManager::save() { + Snapshot snapshot; + for (auto & [type, system] : this->systems) { + snapshot[type] = system->active; + } + return snapshot; +} + +void SystemManager::restore(const Snapshot & snapshot) { + for (auto & [type, active] : snapshot) { + this->systems[type]->active = active; + } +} + +void SystemManager::disable_all() { + for (auto & [type, system] : this->systems) { + system->active = false; + } +} diff --git a/src/crepe/manager/SystemManager.h b/src/crepe/manager/SystemManager.h new file mode 100644 index 0000000..50acf77 --- /dev/null +++ b/src/crepe/manager/SystemManager.h @@ -0,0 +1,85 @@ +#pragma once + +#include <memory> +#include <typeindex> +#include <unordered_map> + +#include "../system/System.h" + +#include "Manager.h" + +namespace crepe { + +/** + * \brief Collection of all systems + * + * This manager aggregates all systems and provides utility functions to retrieve references to + * and update systems. + */ +class SystemManager : public Manager { +public: + SystemManager(Mediator &); + + /** + * \brief Per-frame update. + * + * Updates the game state based on the elapsed time since the last frame. + */ + void frame_update(); + + /** + * \brief Fixed update executed at a fixed rate. + * + * This function updates physics and game logic based on LoopTimer's fixed_delta_time. + */ + void fixed_update(); + +private: + /** + * \brief Collection of System instances + * + * This map holds System instances indexed by the system's class typeid. It is filled in the + * constructor of \c SystemManager using SystemManager::load_system. + */ + std::unordered_map<std::type_index, std::unique_ptr<System>> systems; + /** + * \brief Initialize a system + * \tparam T System type (must be derivative of \c System) + */ + template <class T> + void load_system(); + +public: + /** + * \brief Retrieve a reference to ECS system + * \tparam T System type + * \returns Reference to system instance + * \throws std::runtime_error if the System is not initialized + */ + template <class T> + T & get_system(); + +public: + /** + * \brief SystemManager snapshot + * + * The SystemManager snapshot only stores which systems are active + */ + typedef std::unordered_map<std::type_index, bool> Snapshot; + /** + * \brief Save a snapshot of the systems' state + * \returns Copy of each system's active property + */ + Snapshot save(); + /** + * \brief Restore system active state from a snapshot + * \param snapshot Snapshot to restore from (as returned by \c save()) + */ + void restore(const Snapshot & snapshot); + //! Disable all systems + void disable_all(); +}; + +} // namespace crepe + +#include "SystemManager.hpp" diff --git a/src/crepe/manager/SystemManager.hpp b/src/crepe/manager/SystemManager.hpp new file mode 100644 index 0000000..3d26e4c --- /dev/null +++ b/src/crepe/manager/SystemManager.hpp @@ -0,0 +1,41 @@ +#pragma once + +#include <cassert> +#include <format> +#include <memory> + +#include "SystemManager.h" + +namespace crepe { + +template <class T> +T & SystemManager::get_system() { + using namespace std; + static_assert(is_base_of<System, T>::value, + "get_system must recieve a derivative class of System"); + + const type_info & type = typeid(T); + if (!this->systems.contains(type)) + throw runtime_error(format("SystemManager: {} is not initialized", type.name())); + + System * system = this->systems.at(type).get(); + T * concrete_system = dynamic_cast<T *>(system); + assert(concrete_system != nullptr); + + return *concrete_system; +} + +template <class T> +void SystemManager::load_system() { + using namespace std; + static_assert(is_base_of<System, T>::value, + "load_system must recieve a derivative class of System"); + + const type_info & type = typeid(T); + if (this->systems.contains(type)) + throw runtime_error(format("SystemManager: {} is already initialized", type.name())); + System * system = new T(this->mediator); + this->systems[type] = unique_ptr<System>(system); +} + +} // namespace crepe diff --git a/src/crepe/system/AISystem.cpp b/src/crepe/system/AISystem.cpp new file mode 100644 index 0000000..0f35010 --- /dev/null +++ b/src/crepe/system/AISystem.cpp @@ -0,0 +1,186 @@ +#include <algorithm> +#include <cmath> + +#include "manager/ComponentManager.h" +#include "manager/LoopTimerManager.h" +#include "manager/Mediator.h" + +#include "AISystem.h" + +using namespace crepe; +using namespace std::chrono; + +void AISystem::fixed_update() { + const Mediator & mediator = this->mediator; + ComponentManager & mgr = mediator.component_manager; + LoopTimerManager & loop_timer = mediator.loop_timer; + RefVector<AI> ai_components = mgr.get_components_by_type<AI>(); + + float dt = loop_timer.get_scaled_fixed_delta_time().count(); + + // Loop through all AI components + for (AI & ai : ai_components) { + if (!ai.active) { + continue; + } + + RefVector<Rigidbody> rigidbodies + = mgr.get_components_by_id<Rigidbody>(ai.game_object_id); + if (rigidbodies.empty()) { + throw std::runtime_error( + "AI component must be attached to a GameObject with a Rigidbody component"); + } + Rigidbody & rigidbody = rigidbodies.front().get(); + if (!rigidbody.active) { + continue; + } + if (rigidbody.data.mass <= 0) { + throw std::runtime_error("Mass must be greater than 0"); + } + + // Calculate the force to apply to the entity + vec2 force = this->calculate(ai, rigidbody); + // Calculate the acceleration (using the above calculated force) + vec2 acceleration = force / rigidbody.data.mass; + // Finally, update Rigidbody's velocity + rigidbody.data.linear_velocity += acceleration * dt; + } +} + +vec2 AISystem::calculate(AI & ai, const Rigidbody & rigidbody) { + const Mediator & mediator = this->mediator; + ComponentManager & mgr = mediator.component_manager; + RefVector<Transform> transforms = mgr.get_components_by_id<Transform>(ai.game_object_id); + Transform & transform = transforms.front().get(); + + vec2 force; + + // Run all the behaviors that are on, and stop if the force gets too high + if (ai.on(AI::BehaviorTypeMask::FLEE)) { + vec2 force_to_add = this->flee(ai, rigidbody, transform); + + if (!this->accumulate_force(ai, force, force_to_add)) { + return force; + } + } + if (ai.on(AI::BehaviorTypeMask::ARRIVE)) { + vec2 force_to_add = this->arrive(ai, rigidbody, transform); + + if (!this->accumulate_force(ai, force, force_to_add)) { + return force; + } + } + if (ai.on(AI::BehaviorTypeMask::SEEK)) { + vec2 force_to_add = this->seek(ai, rigidbody, transform); + + if (!this->accumulate_force(ai, force, force_to_add)) { + return force; + } + } + if (ai.on(AI::BehaviorTypeMask::PATH_FOLLOW)) { + vec2 force_to_add = this->path_follow(ai, rigidbody, transform); + + if (!this->accumulate_force(ai, force, force_to_add)) { + return force; + } + } + + return force; +} + +bool AISystem::accumulate_force(const AI & ai, vec2 & running_total, vec2 & force_to_add) { + float magnitude = running_total.length(); + float magnitude_remaining = ai.max_force - magnitude; + + if (magnitude_remaining <= 0.0f) { + // If the force is already at/above the max force, return false + return false; + } + + float magnitude_to_add = force_to_add.length(); + if (magnitude_to_add < magnitude_remaining) { + // If the force to add is less than the remaining force, add it + running_total += force_to_add; + } else { + // If the force to add is greater than the remaining force, add a fraction of it + force_to_add.normalize(); + running_total += force_to_add * magnitude_remaining; + } + + return true; +} + +vec2 AISystem::seek(const AI & ai, const Rigidbody & rigidbody, + const Transform & transform) const { + // Calculate the desired velocity + vec2 desired_velocity = ai.seek_target - transform.position; + desired_velocity.normalize(); + desired_velocity *= rigidbody.data.max_linear_velocity; + + return desired_velocity - rigidbody.data.linear_velocity; +} + +vec2 AISystem::flee(const AI & ai, const Rigidbody & rigidbody, + const Transform & transform) const { + // Calculate the desired velocity if the entity is within the panic distance + vec2 desired_velocity = transform.position - ai.flee_target; + if (desired_velocity.length_squared() > ai.square_flee_panic_distance) { + return vec2{0, 0}; + } + desired_velocity.normalize(); + desired_velocity *= rigidbody.data.max_linear_velocity; + + return desired_velocity - rigidbody.data.linear_velocity; +} + +vec2 AISystem::arrive(const AI & ai, const Rigidbody & rigidbody, + const Transform & transform) const { + // Calculate the desired velocity (taking into account the deceleration rate) + vec2 to_target = ai.arrive_target - transform.position; + float distance = to_target.length(); + if (distance > 0.0f) { + if (ai.arrive_deceleration <= 0.0f) { + throw std::runtime_error("Deceleration rate must be greater than 0"); + } + + float speed = distance / ai.arrive_deceleration; + speed = std::min(speed, rigidbody.data.max_linear_velocity); + vec2 desired_velocity = to_target * (speed / distance); + + return desired_velocity - rigidbody.data.linear_velocity; + } + + return vec2{0, 0}; +} + +vec2 AISystem::path_follow(AI & ai, const Rigidbody & rigidbody, const Transform & transform) { + if (ai.path.empty()) { + return vec2{0, 0}; + } + + // Get the target node + vec2 target = ai.path.at(ai.path_index); + // Calculate the force to apply to the entity + vec2 to_target = target - transform.position; + if (to_target.length_squared() > ai.path_node_distance * ai.path_node_distance) { + // If the entity is not close enough to the target node, seek it + ai.seek_target = target; + ai.arrive_target = target; + } else { + // If the entity is close enough to the target node, move to the next node + ai.path_index++; + if (ai.path_index >= ai.path.size()) { + if (ai.path_loop) { + // If the path is looping, reset the path index + ai.path_index = 0; + } else { + // If the path is not looping, arrive at the last node + ai.path_index = ai.path.size() - 1; + return this->arrive(ai, rigidbody, transform); + } + } + } + + // Seek the target node + return this->seek(ai, rigidbody, transform); +} diff --git a/src/crepe/system/AISystem.h b/src/crepe/system/AISystem.h new file mode 100644 index 0000000..04807cf --- /dev/null +++ b/src/crepe/system/AISystem.h @@ -0,0 +1,81 @@ +#pragma once + +#include "api/AI.h" +#include "api/Rigidbody.h" + +#include "System.h" +#include "api/Transform.h" +#include "types.h" + +namespace crepe { + +/** + * \brief The AISystem is used to control the movement of entities using AI. + * + * The AISystem is used to control the movement of entities using AI. The AISystem can be used to + * implement different behaviors such as seeking, fleeing, arriving, and path following. + */ +class AISystem : public System { +public: + using System::System; + + //! Update the AI system + void fixed_update() override; + +private: + /** + * \brief Calculate the total force to apply to the entity + * + * \param ai The AI component + * \param rigidbody The Rigidbody component + */ + vec2 calculate(AI & ai, const Rigidbody & rigidbody); + /** + * \brief Accumulate the force to apply to the entity + * + * \param ai The AI component + * \param running_total The running total of the force + * \param force_to_add The force to add + * \return true if the force was added, false otherwise + */ + bool accumulate_force(const AI & ai, vec2 & running_total, vec2 & force_to_add); + + /** + * \brief Calculate the seek force + * + * \param ai The AI component + * \param rigidbody The Rigidbody component + * \param transform The Transform component + * \return The seek force + */ + vec2 seek(const AI & ai, const Rigidbody & rigidbody, const Transform & transform) const; + /** + * \brief Calculate the flee force + * + * \param ai The AI component + * \param rigidbody The Rigidbody component + * \param transform The Transform component + * \return The flee force + */ + vec2 flee(const AI & ai, const Rigidbody & rigidbody, const Transform & transform) const; + /** + * \brief Calculate the arrive force + * + * \param ai The AI component + * \param rigidbody The Rigidbody component + * \param transform The Transform component + * \return The arrive force + */ + vec2 arrive(const AI & ai, const Rigidbody & rigidbody, const Transform & transform) const; + /** + * \brief Calculate the path follow force + * + * \param ai The AI component + * \param rigidbody The Rigidbody component + * \param transform The Transform component + * \return The path follow force + */ + vec2 path_follow(AI & ai, const Rigidbody & rigidbody, const Transform & transform); +}; + +} // namespace crepe diff --git a/src/crepe/system/AnimatorSystem.cpp b/src/crepe/system/AnimatorSystem.cpp new file mode 100644 index 0000000..e5ab2fa --- /dev/null +++ b/src/crepe/system/AnimatorSystem.cpp @@ -0,0 +1,40 @@ +#include "../api/Animator.h" +#include "../manager/ComponentManager.h" +#include "../manager/LoopTimerManager.h" +#include <chrono> + +#include "AnimatorSystem.h" + +using namespace crepe; +using namespace std::chrono; + +void AnimatorSystem::frame_update() { + ComponentManager & mgr = this->mediator.component_manager; + LoopTimerManager & timer = this->mediator.loop_timer; + RefVector<Animator> animations = mgr.get_components_by_type<Animator>(); + + float elapsed_time = duration_cast<duration<float>>(timer.get_elapsed_time()).count(); + + for (Animator & a : animations) { + if (!a.active) continue; + if (a.data.fps == 0) continue; + + Animator::Data & ctx = a.data; + float frame_duration = 1.0f / ctx.fps; + + int last_frame = ctx.row; + + int cycle_end = (ctx.cycle_end == -1) ? a.grid_size.x : ctx.cycle_end; + int total_frames = cycle_end - ctx.cycle_start; + + int curr_frame = static_cast<int>(elapsed_time / frame_duration) % total_frames; + + ctx.row = ctx.cycle_start + curr_frame; + a.spritesheet.mask.x = ctx.row * a.spritesheet.mask.w; + a.spritesheet.mask.y = (ctx.col * a.spritesheet.mask.h); + + if (!ctx.looping && curr_frame == ctx.cycle_start && last_frame == total_frames - 1) { + a.active = false; + } + } +} diff --git a/src/crepe/system/AnimatorSystem.h b/src/crepe/system/AnimatorSystem.h new file mode 100644 index 0000000..092e131 --- /dev/null +++ b/src/crepe/system/AnimatorSystem.h @@ -0,0 +1,28 @@ +#pragma once + +#include "System.h" + +namespace crepe { + +/** + * \brief The AnimatorSystem is responsible for managing and updating all Animator components. + * + * This system is responsible for controlling the behavior of the animations for all entities + * that have the Animator component attached. It updates the animations by controlling their + * frame changes, looping behavior, and overall animation state. + */ +class AnimatorSystem : public System { + +public: + using System::System; + /** + * \brief Updates the Animator components. + * + * This method is called to update the state of all + * Animator components, moving the animations forward and managing their behavior (e.g., + * looping). + */ + void frame_update() override; +}; + +} // namespace crepe diff --git a/src/crepe/system/AudioSystem.cpp b/src/crepe/system/AudioSystem.cpp new file mode 100644 index 0000000..d4e8b9f --- /dev/null +++ b/src/crepe/system/AudioSystem.cpp @@ -0,0 +1,62 @@ +#include "AudioSystem.h" + +#include "../manager/ComponentManager.h" +#include "../manager/ResourceManager.h" +#include "../types.h" + +using namespace crepe; +using namespace std; + +void AudioSystem::fixed_update() { + ComponentManager & component_manager = this->mediator.component_manager; + ResourceManager & resource_manager = this->mediator.resource_manager; + RefVector<AudioSource> components + = component_manager.get_components_by_type<AudioSource>(); + + for (AudioSource & component : components) { + Sound & resource = resource_manager.get<Sound>(component.source); + + this->diff_update(component, resource); + + this->update_last(component); + } +} + +void AudioSystem::diff_update(AudioSource & component, Sound & resource) { + SoundContext & context = this->get_context(); + + if (component.active != component.last_active) { + if (!component.active) { + context.stop(component.voice); + return; + } + if (component.play_on_awake) component.oneshot_play = true; + } + if (!component.active) return; + + if (component.oneshot_play) { + component.voice = context.play(resource); + component.oneshot_play = false; + } + if (component.oneshot_stop) { + context.stop(component.voice); + component.oneshot_stop = false; + } + if (component.volume != component.last_volume) { + context.set_volume(component.voice, component.volume); + } + if (component.loop != component.last_loop) { + context.set_loop(component.voice, component.loop); + } +} + +void AudioSystem::update_last(AudioSource & component) { + component.last_active = component.active; + component.last_loop = component.loop; + component.last_volume = component.volume; +} + +SoundContext & AudioSystem::get_context() { + if (this->context == nullptr) this->context = make_unique<SoundContext>(); + return *this->context.get(); +} diff --git a/src/crepe/system/AudioSystem.h b/src/crepe/system/AudioSystem.h new file mode 100644 index 0000000..56fc98c --- /dev/null +++ b/src/crepe/system/AudioSystem.h @@ -0,0 +1,51 @@ +#pragma once + +#include "../api/AudioSource.h" +#include "../facade/Sound.h" +#include "../facade/SoundContext.h" + +#include "System.h" + +namespace crepe { + +class AudioSystem : public System { +public: + using System::System; + void fixed_update() override; + +private: + /** + * \brief Update `last_*` members of \c component + * + * Copies all component properties stored for comparison between AudioSystem::update() calls + * + * \param component AudioSource component to update + */ + void update_last(AudioSource & component); + + /** + * \brief Compare update component + * + * Compares properties of \c component and \c data, and calls SoundContext functions where + * applicable. + * + * \param component AudioSource component to update + * \param resource Sound instance for AudioSource's Asset + */ + void diff_update(AudioSource & component, Sound & resource); + +protected: + /** + * \brief Get SoundContext + * + * SoundContext is retrieved through this function instead of being a direct member of + * AudioSystem to aid with testability. + */ + virtual SoundContext & get_context(); + +private: + //! SoundContext + std::unique_ptr<SoundContext> context = nullptr; +}; + +} // namespace crepe diff --git a/src/crepe/system/CMakeLists.txt b/src/crepe/system/CMakeLists.txt new file mode 100644 index 0000000..52369d0 --- /dev/null +++ b/src/crepe/system/CMakeLists.txt @@ -0,0 +1,28 @@ +target_sources(crepe PUBLIC + System.cpp + ParticleSystem.cpp + ScriptSystem.cpp + PhysicsSystem.cpp + CollisionSystem.cpp + RenderSystem.cpp + AudioSystem.cpp + AnimatorSystem.cpp + InputSystem.cpp + EventSystem.cpp + ReplaySystem.cpp + AISystem.cpp +) + +target_sources(crepe PUBLIC FILE_SET HEADERS FILES + System.h + ScriptSystem.h + PhysicsSystem.h + CollisionSystem.h + RenderSystem.h + AudioSystem.h + AnimatorSystem.h + InputSystem.h + EventSystem.h + ReplaySystem.h + AISystem.h +) diff --git a/src/crepe/system/CollisionSystem.cpp b/src/crepe/system/CollisionSystem.cpp new file mode 100644 index 0000000..9d88d9f --- /dev/null +++ b/src/crepe/system/CollisionSystem.cpp @@ -0,0 +1,575 @@ +#include <algorithm> +#include <cmath> +#include <cstddef> +#include <functional> +#include <optional> +#include <utility> +#include <variant> + +#include "../manager/ComponentManager.h" +#include "../manager/EventManager.h" +#include "api/BoxCollider.h" +#include "api/CircleCollider.h" +#include "api/Event.h" +#include "api/Metadata.h" +#include "api/Rigidbody.h" +#include "api/Transform.h" +#include "api/Vector2.h" + +#include "Collider.h" +#include "CollisionSystem.h" +#include "types.h" +#include "util/OptionalRef.h" + +using namespace crepe; + +void CollisionSystem::fixed_update() { + std::vector<CollisionInternal> all_colliders; + game_object_id_t id = 0; + ComponentManager & mgr = this->mediator.component_manager; + RefVector<Rigidbody> rigidbodies = mgr.get_components_by_type<Rigidbody>(); + // Collisions can only happen on object with a rigidbody + for (Rigidbody & rigidbody : rigidbodies) { + if (!rigidbody.active) continue; + id = rigidbody.game_object_id; + Transform & transform = mgr.get_components_by_id<Transform>(id).front().get(); + // Check if the boxcollider is active and has the same id as the rigidbody. + RefVector<BoxCollider> boxcolliders = mgr.get_components_by_type<BoxCollider>(); + for (BoxCollider & boxcollider : boxcolliders) { + if (boxcollider.game_object_id != id) continue; + if (!boxcollider.active) continue; + all_colliders.push_back({.id = id, + .collider = collider_variant{boxcollider}, + .transform = transform, + .rigidbody = rigidbody}); + } + // Check if the circlecollider is active and has the same id as the rigidbody. + RefVector<CircleCollider> circlecolliders + = mgr.get_components_by_type<CircleCollider>(); + for (CircleCollider & circlecollider : circlecolliders) { + if (circlecollider.game_object_id != id) continue; + if (!circlecollider.active) continue; + all_colliders.push_back({.id = id, + .collider = collider_variant{circlecollider}, + .transform = transform, + .rigidbody = rigidbody}); + } + } + + // Check between all colliders if there is a collision + std::vector<std::pair<CollisionInternal, CollisionInternal>> collided + = this->gather_collisions(all_colliders); + + // For both objects call the collision handler + for (auto & collision_pair : collided) { + this->collision_handler_request(collision_pair.first, collision_pair.second); + this->collision_handler_request(collision_pair.second, collision_pair.first); + } +} + +void CollisionSystem::collision_handler_request(CollisionInternal & this_data, + CollisionInternal & other_data) { + + CollisionInternalType type + = this->get_collider_type(this_data.collider, other_data.collider); + std::pair<vec2, CollisionSystem::Direction> resolution_data + = this->collision_handler(this_data, other_data, type); + ComponentManager & mgr = this->mediator.component_manager; + OptionalRef<Metadata> this_metadata + = mgr.get_components_by_id<Metadata>(this_data.id).front().get(); + OptionalRef<Metadata> other_metadata + = mgr.get_components_by_id<Metadata>(other_data.id).front().get(); + OptionalRef<Collider> this_collider; + OptionalRef<Collider> other_collider; + switch (type) { + case CollisionInternalType::BOX_BOX: { + this_collider = std::get<std::reference_wrapper<BoxCollider>>(this_data.collider); + other_collider + = std::get<std::reference_wrapper<BoxCollider>>(other_data.collider); + break; + } + case CollisionInternalType::BOX_CIRCLE: { + this_collider = std::get<std::reference_wrapper<BoxCollider>>(this_data.collider); + other_collider + = std::get<std::reference_wrapper<CircleCollider>>(other_data.collider); + break; + } + case CollisionInternalType::CIRCLE_BOX: { + this_collider + = std::get<std::reference_wrapper<CircleCollider>>(this_data.collider); + other_collider + = std::get<std::reference_wrapper<BoxCollider>>(other_data.collider); + break; + } + case CollisionInternalType::CIRCLE_CIRCLE: { + this_collider + = std::get<std::reference_wrapper<CircleCollider>>(this_data.collider); + other_collider + = std::get<std::reference_wrapper<CircleCollider>>(other_data.collider); + break; + } + } + + // collision info + crepe::CollisionSystem::CollisionInfo collision_info{ + .this_collider = this_collider, + .this_transform = this_data.transform, + .this_rigidbody = this_data.rigidbody, + .this_metadata = this_metadata, + .other_collider = other_collider, + .other_transform = other_data.transform, + .other_rigidbody = other_data.rigidbody, + .other_metadata = other_metadata, + .resolution = resolution_data.first, + .resolution_direction = resolution_data.second, + }; + + // Determine if static needs to be called + this->determine_collision_handler(collision_info); +} + +std::pair<vec2, CollisionSystem::Direction> +CollisionSystem::collision_handler(CollisionInternal & data1, CollisionInternal & data2, + CollisionInternalType type) { + vec2 resolution; + switch (type) { + case CollisionInternalType::BOX_BOX: { + const BoxCollider & collider1 + = std::get<std::reference_wrapper<BoxCollider>>(data1.collider); + const BoxCollider & collider2 + = std::get<std::reference_wrapper<BoxCollider>>(data2.collider); + vec2 collider_pos1 = this->get_current_position(collider1.offset, data1.transform, + data1.rigidbody); + vec2 collider_pos2 = this->get_current_position(collider2.offset, data2.transform, + data2.rigidbody); + resolution = this->get_box_box_resolution(collider1, collider2, collider_pos1, + collider_pos2); + break; + } + case CollisionInternalType::BOX_CIRCLE: { + const BoxCollider & collider1 + = std::get<std::reference_wrapper<BoxCollider>>(data1.collider); + const CircleCollider & collider2 + = std::get<std::reference_wrapper<CircleCollider>>(data2.collider); + vec2 collider_pos1 = this->get_current_position(collider1.offset, data1.transform, + data1.rigidbody); + vec2 collider_pos2 = this->get_current_position(collider2.offset, data2.transform, + data2.rigidbody); + resolution = -this->get_circle_box_resolution(collider2, collider1, collider_pos2, + collider_pos1); + break; + } + case CollisionInternalType::CIRCLE_CIRCLE: { + const CircleCollider & collider1 + = std::get<std::reference_wrapper<CircleCollider>>(data1.collider); + const CircleCollider & collider2 + = std::get<std::reference_wrapper<CircleCollider>>(data2.collider); + vec2 collider_pos1 = this->get_current_position(collider1.offset, data1.transform, + data1.rigidbody); + vec2 collider_pos2 = this->get_current_position(collider2.offset, data2.transform, + data2.rigidbody); + resolution = this->get_circle_circle_resolution(collider1, collider2, + collider_pos1, collider_pos2); + break; + } + case CollisionInternalType::CIRCLE_BOX: { + const CircleCollider & collider1 + = std::get<std::reference_wrapper<CircleCollider>>(data1.collider); + const BoxCollider & collider2 + = std::get<std::reference_wrapper<BoxCollider>>(data2.collider); + vec2 collider_pos1 = this->get_current_position(collider1.offset, data1.transform, + data1.rigidbody); + vec2 collider_pos2 = this->get_current_position(collider2.offset, data2.transform, + data2.rigidbody); + resolution = this->get_circle_box_resolution(collider1, collider2, collider_pos1, + collider_pos2); + break; + } + } + + Direction resolution_direction = Direction::NONE; + if (resolution.x != 0 && resolution.y != 0) { + resolution_direction = Direction::BOTH; + } else if (resolution.x != 0) { + resolution_direction = Direction::X_DIRECTION; + //checks if the other velocity has a value and if this object moved + if (data1.rigidbody.data.linear_velocity.x != 0 + && data1.rigidbody.data.linear_velocity.y != 0) + resolution.y = -data1.rigidbody.data.linear_velocity.y + * (resolution.x / data1.rigidbody.data.linear_velocity.x); + } else if (resolution.y != 0) { + resolution_direction = Direction::Y_DIRECTION; + //checks if the other velocity has a value and if this object moved + if (data1.rigidbody.data.linear_velocity.x != 0 + && data1.rigidbody.data.linear_velocity.y != 0) + resolution.x = -data1.rigidbody.data.linear_velocity.x + * (resolution.y / data1.rigidbody.data.linear_velocity.y); + } + + return std::make_pair(resolution, resolution_direction); +} + +vec2 CollisionSystem::get_box_box_resolution(const BoxCollider & box_collider1, + const BoxCollider & box_collider2, + const vec2 & final_position1, + const vec2 & final_position2) const { + vec2 resolution; // Default resolution vector + vec2 delta = final_position2 - final_position1; + + // Compute half-dimensions of the boxes + float half_width1 = box_collider1.dimensions.x / 2.0; + float half_height1 = box_collider1.dimensions.y / 2.0; + float half_width2 = box_collider2.dimensions.x / 2.0; + float half_height2 = box_collider2.dimensions.y / 2.0; + + // Calculate overlaps along X and Y axes + float overlap_x = (half_width1 + half_width2) - std::abs(delta.x); + float overlap_y = (half_height1 + half_height2) - std::abs(delta.y); + + // Check if there is a collision should always be true + if (overlap_x > 0 && overlap_y > 0) { + // Determine the direction of resolution + if (overlap_x < overlap_y) { + // Resolve along the X-axis (smallest overlap) + resolution.x = (delta.x > 0) ? -overlap_x : overlap_x; + } else if (overlap_y < overlap_x) { + // Resolve along the Y-axis (smallest overlap) + resolution.y = (delta.y > 0) ? -overlap_y : overlap_y; + } else { + // Equal overlap, resolve both directions with preference + resolution.x = (delta.x > 0) ? -overlap_x : overlap_x; + resolution.y = (delta.y > 0) ? -overlap_y : overlap_y; + } + } + + return resolution; +} + +vec2 CollisionSystem::get_circle_circle_resolution(const CircleCollider & circle_collider1, + const CircleCollider & circle_collider2, + const vec2 & final_position1, + const vec2 & final_position2) const { + vec2 delta = final_position2 - final_position1; + + // Compute the distance between the two circle centers + float distance = std::sqrt(delta.x * delta.x + delta.y * delta.y); + + // Compute the combined radii of the two circles + float combined_radius = circle_collider1.radius + circle_collider2.radius; + + // Compute the penetration depth + float penetration_depth = combined_radius - distance; + + // Normalize the delta vector to get the collision direction + vec2 collision_normal = delta / distance; + + // Compute the resolution vector + vec2 resolution = -collision_normal * penetration_depth; + + return resolution; +} + +vec2 CollisionSystem::get_circle_box_resolution(const CircleCollider & circle_collider, + const BoxCollider & box_collider, + const vec2 & circle_position, + const vec2 & box_position) const { + vec2 delta = circle_position - box_position; + + // Compute half-dimensions of the box + float half_width = box_collider.dimensions.x / 2.0f; + float half_height = box_collider.dimensions.y / 2.0f; + + // Clamp circle center to the nearest point on the box + vec2 closest_point; + closest_point.x = std::clamp(delta.x, -half_width, half_width); + closest_point.y = std::clamp(delta.y, -half_height, half_height); + + // Find the vector from the circle center to the closest point + vec2 closest_delta = delta - closest_point; + + // Normalize the delta to get the collision direction + float distance + = std::sqrt(closest_delta.x * closest_delta.x + closest_delta.y * closest_delta.y); + vec2 collision_normal = closest_delta / distance; + + // Compute penetration depth + float penetration_depth = circle_collider.radius - distance; + + // Compute the resolution vector + vec2 resolution = collision_normal * penetration_depth; + + return resolution; +} + +void CollisionSystem::determine_collision_handler(CollisionInfo & info) { + // Check rigidbody type for static + if (info.this_rigidbody.data.body_type == Rigidbody::BodyType::STATIC) return; + // If second body is static perform the static collision handler in this system + if (info.other_rigidbody.data.body_type == Rigidbody::BodyType::STATIC) { + this->static_collision_handler(info); + }; + // Call collision event for user + CollisionEvent data(info); + EventManager & emgr = this->mediator.event_manager; + emgr.trigger_event<CollisionEvent>(data, info.this_collider.game_object_id); +} + +void CollisionSystem::static_collision_handler(CollisionInfo & info) { + // Move object back using calculate move back value + info.this_transform.position += info.resolution; + + switch (info.resolution_direction) { + case Direction::BOTH: + //bounce + if (info.this_rigidbody.data.elastisity_coefficient > 0) { + info.this_rigidbody.data.linear_velocity + = -info.this_rigidbody.data.linear_velocity + * info.this_rigidbody.data.elastisity_coefficient; + } + //stop movement + else { + info.this_rigidbody.data.linear_velocity = {0, 0}; + } + break; + case Direction::Y_DIRECTION: + // Bounce + if (info.this_rigidbody.data.elastisity_coefficient > 0) { + info.this_rigidbody.data.linear_velocity.y + = -info.this_rigidbody.data.linear_velocity.y + * info.this_rigidbody.data.elastisity_coefficient; + } + // Stop movement + else { + info.this_rigidbody.data.linear_velocity.y = 0; + info.this_transform.position.x -= info.resolution.x; + } + break; + case Direction::X_DIRECTION: + // Bounce + if (info.this_rigidbody.data.elastisity_coefficient > 0) { + info.this_rigidbody.data.linear_velocity.x + = -info.this_rigidbody.data.linear_velocity.x + * info.this_rigidbody.data.elastisity_coefficient; + } + // Stop movement + else { + info.this_rigidbody.data.linear_velocity.x = 0; + info.this_transform.position.y -= info.resolution.y; + } + break; + case Direction::NONE: + // Not possible + break; + } +} + +std::vector<std::pair<CollisionSystem::CollisionInternal, CollisionSystem::CollisionInternal>> +CollisionSystem::gather_collisions(std::vector<CollisionInternal> & colliders) { + + // TODO: + // If no colliders skip + // Check if colliders has rigidbody if not skip + + // TODO: + // If amount is higer than lets say 16 for now use quadtree otwerwise skip + // Quadtree code + // Quadtree is placed over the input vector + + // Return data of collided colliders which are variants + std::vector<std::pair<CollisionInternal, CollisionInternal>> collisions_ret; + //using visit to visit the variant to access the active and id. + for (size_t i = 0; i < colliders.size(); ++i) { + for (size_t j = i + 1; j < colliders.size(); ++j) { + if (colliders[i].id == colliders[j].id) continue; + if (!have_common_layer(colliders[i].rigidbody.data.collision_layers, + colliders[j].rigidbody.data.collision_layers)) + continue; + CollisionInternalType type + = get_collider_type(colliders[i].collider, colliders[j].collider); + if (!get_collision( + { + .collider = colliders[i].collider, + .transform = colliders[i].transform, + .rigidbody = colliders[i].rigidbody, + }, + { + .collider = colliders[j].collider, + .transform = colliders[j].transform, + .rigidbody = colliders[j].rigidbody, + }, + type)) + continue; + collisions_ret.emplace_back(colliders[i], colliders[j]); + } + } + + return collisions_ret; +} + +bool CollisionSystem::have_common_layer(const std::set<int> & layers1, + const std::set<int> & layers2) { + + // Check if any number is equal in the layers + for (int num : layers1) { + if (layers2.contains(num)) { + // Common layer found + return true; + break; + } + } + // No common layer found + return false; +} + +CollisionSystem::CollisionInternalType +CollisionSystem::get_collider_type(const collider_variant & collider1, + const collider_variant & collider2) const { + if (std::holds_alternative<std::reference_wrapper<CircleCollider>>(collider1)) { + if (std::holds_alternative<std::reference_wrapper<CircleCollider>>(collider2)) { + return CollisionInternalType::CIRCLE_CIRCLE; + } else { + return CollisionInternalType::CIRCLE_BOX; + } + } else { + if (std::holds_alternative<std::reference_wrapper<CircleCollider>>(collider2)) { + return CollisionInternalType::BOX_CIRCLE; + } else { + return CollisionInternalType::BOX_BOX; + } + } +} + +bool CollisionSystem::get_collision(const CollisionInternal & first_info, + const CollisionInternal & second_info, + CollisionInternalType type) const { + switch (type) { + case CollisionInternalType::BOX_BOX: { + const BoxCollider & box_collider1 + = std::get<std::reference_wrapper<BoxCollider>>(first_info.collider); + const BoxCollider & box_collider2 + = std::get<std::reference_wrapper<BoxCollider>>(second_info.collider); + return this->get_box_box_collision(box_collider1, box_collider2, + first_info.transform, second_info.transform, + second_info.rigidbody, second_info.rigidbody); + } + case CollisionInternalType::BOX_CIRCLE: { + const BoxCollider & box_collider + = std::get<std::reference_wrapper<BoxCollider>>(first_info.collider); + const CircleCollider & circle_collider + = std::get<std::reference_wrapper<CircleCollider>>(second_info.collider); + return this->get_box_circle_collision( + box_collider, circle_collider, first_info.transform, second_info.transform, + second_info.rigidbody, second_info.rigidbody); + } + case CollisionInternalType::CIRCLE_CIRCLE: { + const CircleCollider & circle_collider1 + = std::get<std::reference_wrapper<CircleCollider>>(first_info.collider); + const CircleCollider & circle_collider2 + = std::get<std::reference_wrapper<CircleCollider>>(second_info.collider); + return this->get_circle_circle_collision( + circle_collider1, circle_collider2, first_info.transform, + second_info.transform, second_info.rigidbody, second_info.rigidbody); + } + case CollisionInternalType::CIRCLE_BOX: { + const CircleCollider & circle_collider + = std::get<std::reference_wrapper<CircleCollider>>(first_info.collider); + const BoxCollider & box_collider + = std::get<std::reference_wrapper<BoxCollider>>(second_info.collider); + return this->get_box_circle_collision( + box_collider, circle_collider, first_info.transform, second_info.transform, + second_info.rigidbody, second_info.rigidbody); + } + } + return false; +} + +bool CollisionSystem::get_box_box_collision(const BoxCollider & box1, const BoxCollider & box2, + const Transform & transform1, + const Transform & transform2, + const Rigidbody & rigidbody1, + const Rigidbody & rigidbody2) const { + // Get current positions of colliders + vec2 final_position1 = this->get_current_position(box1.offset, transform1, rigidbody1); + vec2 final_position2 = this->get_current_position(box2.offset, transform2, rigidbody2); + + // Calculate half-extents (half width and half height) + float half_width1 = box1.dimensions.x / 2.0; + float half_height1 = box1.dimensions.y / 2.0; + float half_width2 = box2.dimensions.x / 2.0; + float half_height2 = box2.dimensions.y / 2.0; + + // Check if the boxes overlap along the X and Y axes + return (final_position1.x + half_width1 > final_position2.x - half_width2 + && final_position1.x - half_width1 < final_position2.x + half_width2 + && final_position1.y + half_height1 > final_position2.y - half_height2 + && final_position1.y - half_height1 < final_position2.y + half_height2); +} + +bool CollisionSystem::get_box_circle_collision(const BoxCollider & box1, + const CircleCollider & circle2, + const Transform & transform1, + const Transform & transform2, + const Rigidbody & rigidbody1, + const Rigidbody & rigidbody2) const { + // Get current positions of colliders + vec2 final_position1 = this->get_current_position(box1.offset, transform1, rigidbody1); + vec2 final_position2 = this->get_current_position(circle2.offset, transform2, rigidbody2); + + // Calculate box half-extents + float half_width = box1.dimensions.x / 2.0; + float half_height = box1.dimensions.y / 2.0; + + // Find the closest point on the box to the circle's center + float closest_x = std::max(final_position1.x - half_width, + std::min(final_position2.x, final_position1.x + half_width)); + float closest_y = std::max(final_position1.y - half_height, + std::min(final_position2.y, final_position1.y + half_height)); + + // Calculate the distance squared between the circle's center and the closest point on the box + float distance_x = final_position2.x - closest_x; + float distance_y = final_position2.y - closest_y; + float distance_squared = distance_x * distance_x + distance_y * distance_y; + + // Compare distance squared with the square of the circle's radius + return distance_squared < circle2.radius * circle2.radius; +} + +bool CollisionSystem::get_circle_circle_collision(const CircleCollider & circle1, + const CircleCollider & circle2, + const Transform & transform1, + const Transform & transform2, + const Rigidbody & rigidbody1, + const Rigidbody & rigidbody2) const { + // Get current positions of colliders + vec2 final_position1 = this->get_current_position(circle1.offset, transform1, rigidbody1); + vec2 final_position2 = this->get_current_position(circle2.offset, transform2, rigidbody2); + + float distance_x = final_position1.x - final_position2.x; + float distance_y = final_position1.y - final_position2.y; + float distance_squared = distance_x * distance_x + distance_y * distance_y; + + // Calculate the sum of the radii + float radius_sum = circle1.radius + circle2.radius; + + // Check if the distance between the centers is less than or equal to the sum of the radii + return distance_squared < radius_sum * radius_sum; +} + +vec2 CollisionSystem::get_current_position(const vec2 & collider_offset, + const Transform & transform, + const Rigidbody & rigidbody) const { + // Get the rotation in radians + float radians1 = transform.rotation * (M_PI / 180.0); + + // Calculate total offset with scale + vec2 total_offset = (rigidbody.data.offset + collider_offset) * transform.scale; + + // Rotate + float rotated_total_offset_x1 + = total_offset.x * cos(radians1) - total_offset.y * sin(radians1); + float rotated_total_offset_y1 + = total_offset.x * sin(radians1) + total_offset.y * cos(radians1); + + // Final positions considering scaling and rotation + return (transform.position + vec2(rotated_total_offset_x1, rotated_total_offset_y1)); +} diff --git a/src/crepe/system/CollisionSystem.h b/src/crepe/system/CollisionSystem.h new file mode 100644 index 0000000..48a8f86 --- /dev/null +++ b/src/crepe/system/CollisionSystem.h @@ -0,0 +1,311 @@ +#pragma once + +#include <optional> +#include <variant> +#include <vector> + +#include "api/BoxCollider.h" +#include "api/CircleCollider.h" +#include "api/Event.h" +#include "api/Metadata.h" +#include "api/Rigidbody.h" +#include "api/Transform.h" +#include "api/Vector2.h" + +#include "Collider.h" +#include "System.h" + +namespace crepe { + +//! A system responsible for detecting and handling collisions between colliders. +class CollisionSystem : public System { +public: + using System::System; + +private: + //! A variant type that can hold either a BoxCollider or a CircleCollider. + using collider_variant = std::variant<std::reference_wrapper<BoxCollider>, + std::reference_wrapper<CircleCollider>>; + + //! Enum representing the types of collider pairs for collision detection. + enum class CollisionInternalType { + BOX_BOX, + CIRCLE_CIRCLE, + BOX_CIRCLE, + CIRCLE_BOX, + }; + + /** + * \brief A structure to store the collision data of a single collider. + * + * This structure all components and id that are for needed within this system when calculating or handeling collisions. + * The transform and rigidbody are mostly needed for location and rotation. + * In rigidbody additional info is written about what the body of the object is, + * and how it should respond on a collision. + */ + struct CollisionInternal { + game_object_id_t id = 0; + collider_variant collider; + Transform & transform; + Rigidbody & rigidbody; + }; + + //! Enum representing movement directions during collision resolution. + enum class Direction { + //! No movement required. + NONE, + //! Movement in the X direction. + X_DIRECTION, + //! Movement in the Y direction. + Y_DIRECTION, + //! Movement in both X and Y directions. + BOTH + }; + +public: + /** + * \brief Structure representing detailed collision information between two colliders. + * + * Includes information about the colliding objects and the resolution data for handling the collision. + */ + struct CollisionInfo { + Collider & this_collider; + Transform & this_transform; + Rigidbody & this_rigidbody; + Metadata & this_metadata; + Collider & other_collider; + Transform & other_transform; + Rigidbody & other_rigidbody; + Metadata & other_metadata; + //! The resolution vector for the collision. + vec2 resolution; + //! The direction of movement for resolving the collision. + Direction resolution_direction = Direction::NONE; + }; + +public: + //! Updates the collision system by checking for collisions between colliders and handling them. + void fixed_update() override; + +private: + /** + * \brief Determines the type of collider pair from two colliders. + * + * Uses std::holds_alternative to identify the types of the provided colliders. + * + * \param collider1 First collider variant (BoxCollider or CircleCollider). + * \param collider2 Second collider variant (BoxCollider or CircleCollider). + * \return The combined type of the two colliders. + */ + CollisionInternalType get_collider_type(const collider_variant & collider1, + const collider_variant & collider2) const; + + /** + * \brief Calculates the current position of a collider. + * + * Combines the Collider offset, Transform position, and Rigidbody offset to compute the position of the collider. + * + * \param collider_offset The offset of the collider. + * \param transform The Transform of the associated game object. + * \param rigidbody The Rigidbody of the associated game object. + * \return The calculated position of the collider. + */ + vec2 get_current_position(const vec2 & collider_offset, const Transform & transform, + const Rigidbody & rigidbody) const; + +private: + /** + * \brief Handles collision resolution between two colliders. + * + * Processes collision data and adjusts objects to resolve collisions and/or calls the user oncollision script function. + * + * \param data1 Collision data for the first collider. + * \param data2 Collision data for the second collider. + */ + void collision_handler_request(CollisionInternal & data1, CollisionInternal & data2); + + /** + * \brief Resolves collision between two colliders and calculates the movement required. + * + * Determines the displacement and direction needed to separate colliders based on their types. + * + * \param data1 Collision data for the first collider. + * \param data2 Collision data for the second collider. + * \param type The type of collider pair. + * \return A pair containing the resolution vector and direction for the first collider. + */ + std::pair<vec2, Direction> collision_handler(CollisionInternal & data1, + CollisionInternal & data2, + CollisionInternalType type); + + /** + * \brief Calculates the resolution vector for two BoxColliders. + * + * Computes the displacement required to separate two overlapping BoxColliders. + * + * \param box_collider1 The first BoxCollider. + * \param box_collider2 The second BoxCollider. + * \param position1 The position of the first BoxCollider. + * \param position2 The position of the second BoxCollider. + * \return The resolution vector for the collision. + */ + vec2 get_box_box_resolution(const BoxCollider & box_collider1, + const BoxCollider & box_collider2, const vec2 & position1, + const vec2 & position2) const; + + /** + * \brief Calculates the resolution vector for two CircleCollider. + * + * Computes the displacement required to separate two overlapping CircleCollider. + * + * \param circle_collider1 The first CircleCollider. + * \param circle_collider2 The second CircleCollider. + * \param final_position1 The position of the first CircleCollider. + * \param final_position2 The position of the second CircleCollider. + * \return The resolution vector for the collision. + */ + vec2 get_circle_circle_resolution(const CircleCollider & circle_collider1, + const CircleCollider & circle_collider2, + const vec2 & final_position1, + const vec2 & final_position2) const; + + /** + * \brief Calculates the resolution vector for two CircleCollider. + * + * Computes the displacement required to separate two overlapping CircleCollider. + * + * \param circle_collider The first CircleCollider. + * \param box_collider The second CircleCollider. + * \param circle_position The position of the CircleCollider. + * \param box_position The position of the BoxCollider. + * \return The resolution vector for the collision. + */ + vec2 get_circle_box_resolution(const CircleCollider & circle_collider, + const BoxCollider & box_collider, + const vec2 & circle_position, + const vec2 & box_position) const; + + /** + * \brief Determines the appropriate collision handler for a collision. + * + * Decides the correct resolution process based on the dynamic or static nature of the colliders involved. + * + * \param info Collision information containing data about both colliders. + */ + void determine_collision_handler(CollisionInfo & info); + + /** + * \brief Handles collisions involving static objects. + * + * Resolves collisions by adjusting positions and modifying velocities if bounce is enabled. + * + * \param info Collision information containing data about both colliders. + */ + void static_collision_handler(CollisionInfo & info); + +private: + /** + * \brief Checks for collisions between colliders. + * + * Identifies collisions and generates pairs of colliding objects for further processing. + * + * \param colliders A collection of all active colliders. + * \return A list of collision pairs with their associated data. + */ + std::vector<std::pair<CollisionInternal, CollisionInternal>> + gather_collisions(std::vector<CollisionInternal> & colliders); + + /** + * \brief Checks if two collision layers have at least one common layer. + * + * This function checks if there is any overlapping layer between the two inputs. + * It compares each layer from the first input to see + * if it exists in the second input. If at least one common layer is found, + * the function returns true, indicating that the two colliders share a common + * collision layer. + * + * \param layers1 all collision layers for the first collider. + * \param layers2 all collision layers for the second collider. + * \return Returns true if there is at least one common layer, false otherwise. + */ + + bool have_common_layer(const std::set<int> & layers1, const std::set<int> & layers2); + + /** + * \brief Checks for collision between two colliders. + * + * Calls the appropriate collision detection function based on the collider types. + * + * \param first_info Collision data for the first collider. + * \param second_info Collision data for the second collider. + * \param type The type of collider pair. + * \return True if a collision is detected, otherwise false. + */ + bool get_collision(const CollisionInternal & first_info, + const CollisionInternal & second_info, + CollisionInternalType type) const; + + /** + * \brief Detects collisions between two BoxColliders. + * + * \param box1 The first BoxCollider. + * \param box2 The second BoxCollider. + * \param transform1 Transform of the first object. + * \param transform2 Transform of the second object. + * \param rigidbody1 Rigidbody of the first object. + * \param rigidbody2 Rigidbody of the second object. + * \return True if a collision is detected, otherwise false. + */ + bool get_box_box_collision(const BoxCollider & box1, const BoxCollider & box2, + const Transform & transform1, const Transform & transform2, + const Rigidbody & rigidbody1, + const Rigidbody & rigidbody2) const; + + /** + * \brief Check collision for box on circle collider + * + * \param box1 The BoxCollider + * \param circle2 The CircleCollider + * \param transform1 Transform of the first object. + * \param transform2 Transform of the second object. + * \param rigidbody1 Rigidbody of the first object. + * \param rigidbody2 Rigidbody of the second object. + * \return True if a collision is detected, otherwise false. + */ + bool get_box_circle_collision(const BoxCollider & box1, const CircleCollider & circle2, + const Transform & transform1, const Transform & transform2, + const Rigidbody & rigidbody1, + const Rigidbody & rigidbody2) const; + + /** + * \brief Check collision for circle on circle collider + * + * \param circle1 First CircleCollider + * \param circle2 Second CircleCollider + * \param transform1 Transform of the first object. + * \param transform2 Transform of the second object. + * \param rigidbody1 Rigidbody of the first object. + * \param rigidbody2 Rigidbody of the second object. + * \return True if a collision is detected, otherwise false. + * + * \return status of collision + */ + bool get_circle_circle_collision(const CircleCollider & circle1, + const CircleCollider & circle2, + const Transform & transform1, + const Transform & transform2, + const Rigidbody & rigidbody1, + const Rigidbody & rigidbody2) const; +}; + +/** + * \brief Event triggered during a collision between objects. + */ +class CollisionEvent : public Event { +public: + crepe::CollisionSystem::CollisionInfo info; + CollisionEvent(const crepe::CollisionSystem::CollisionInfo & collisionInfo) + : info(collisionInfo) {} +}; + +} // namespace crepe diff --git a/src/crepe/system/EventSystem.cpp b/src/crepe/system/EventSystem.cpp new file mode 100644 index 0000000..7e168ab --- /dev/null +++ b/src/crepe/system/EventSystem.cpp @@ -0,0 +1,9 @@ +#include "EventSystem.h" +#include "../manager/EventManager.h" + +using namespace crepe; + +void EventSystem::fixed_update() { + EventManager & ev = this->mediator.event_manager; + ev.dispatch_events(); +} diff --git a/src/crepe/system/EventSystem.h b/src/crepe/system/EventSystem.h new file mode 100644 index 0000000..0ae48d2 --- /dev/null +++ b/src/crepe/system/EventSystem.h @@ -0,0 +1,21 @@ +#pragma once + +#include "System.h" + +namespace crepe { + +/** + * \brief EventManager dispatch helper system + */ +class EventSystem : public System { +public: + using System::System; + + /** + * \brief Dispatch queued events + * \see EventManager::dispatch_events + */ + void fixed_update() override; +}; + +} // namespace crepe diff --git a/src/crepe/system/InputSystem.cpp b/src/crepe/system/InputSystem.cpp new file mode 100644 index 0000000..d209282 --- /dev/null +++ b/src/crepe/system/InputSystem.cpp @@ -0,0 +1,209 @@ +#include "../api/Button.h" +#include "../facade/SDLContext.h" +#include "../manager/ComponentManager.h" +#include "../manager/EventManager.h" +#include "util/Log.h" + +#include "InputSystem.h" + +using namespace crepe; + +void InputSystem::fixed_update() { + ComponentManager & mgr = this->mediator.component_manager; + SDLContext & context = this->mediator.sdl_context; + std::vector<EventData> event_list = context.get_events(); + RefVector<Camera> cameras = mgr.get_components_by_type<Camera>(); + OptionalRef<Camera> curr_cam_ref; + + // Find the active camera + for (Camera & cam : cameras) { + if (!cam.active) continue; + curr_cam_ref = cam; + break; + } + if (!curr_cam_ref) return; + + Camera & current_cam = curr_cam_ref; + RefVector<Transform> transform_vec + = mgr.get_components_by_id<Transform>(current_cam.game_object_id); + Transform & cam_transform = transform_vec.front().get(); + + vec2 camera_origin = cam_transform.position + current_cam.data.postion_offset + - (current_cam.viewport_size / 2); + + for (const EventData & event : event_list) { + // Only calculate mouse coordinates for relevant events + if (event.event_type == EventType::MOUSE_DOWN + || event.event_type == EventType::MOUSE_UP + || event.event_type == EventType::MOUSE_MOVE + || event.event_type == EventType::MOUSE_WHEEL) { + this->handle_mouse_event(event, camera_origin, current_cam); + + } else { + this->handle_non_mouse_event(event); + } + } +} + +void InputSystem::handle_mouse_event(const EventData & event, const vec2 & camera_origin, + const Camera & current_cam) { + EventManager & event_mgr = this->mediator.event_manager; + vec2 adjusted_mouse; + adjusted_mouse.x = event.data.mouse_data.mouse_position.x + camera_origin.x; + adjusted_mouse.x = event.data.mouse_data.mouse_position.y + camera_origin.y; + // Check if the mouse is within the viewport + if ((adjusted_mouse.x < camera_origin.x + || adjusted_mouse.x > camera_origin.x + current_cam.viewport_size.x + || adjusted_mouse.y < camera_origin.y + || adjusted_mouse.y > camera_origin.y + current_cam.viewport_size.y)) + return; + + // Handle mouse-specific events + switch (event.event_type) { + case EventType::MOUSE_DOWN: + event_mgr.queue_event<MousePressEvent>({ + .mouse_pos = adjusted_mouse, + .button = event.data.mouse_data.mouse_button, + }); + this->last_mouse_down_position = adjusted_mouse; + this->last_mouse_button = event.data.mouse_data.mouse_button; + break; + + case EventType::MOUSE_UP: { + event_mgr.queue_event<MouseReleaseEvent>({ + .mouse_pos = adjusted_mouse, + .button = event.data.mouse_data.mouse_button, + }); + vec2 delta_move = adjusted_mouse - this->last_mouse_down_position; + int click_tolerance = Config::get_instance().input.click_tolerance; + if (this->last_mouse_button == event.data.mouse_data.mouse_button + && std::abs(delta_move.x) <= click_tolerance + && std::abs(delta_move.y) <= click_tolerance) { + event_mgr.queue_event<MouseClickEvent>({ + .mouse_pos = adjusted_mouse, + .button = event.data.mouse_data.mouse_button, + }); + this->handle_click(event.data.mouse_data.mouse_button, adjusted_mouse); + } + break; + } + + case EventType::MOUSE_MOVE: + event_mgr.queue_event<MouseMoveEvent>({ + .mouse_pos = adjusted_mouse, + .mouse_delta = event.data.mouse_data.rel_mouse_move, + }); + this->handle_move(event, adjusted_mouse); + break; + + case EventType::MOUSE_WHEEL: + event_mgr.queue_event<MouseScrollEvent>({ + .mouse_pos = adjusted_mouse, + .scroll_direction = event.data.mouse_data.scroll_direction, + .scroll_delta = event.data.mouse_data.scroll_delta, + }); + break; + + default: + break; + } +} + +void InputSystem::handle_non_mouse_event(const EventData & event) { + EventManager & event_mgr = this->mediator.event_manager; + switch (event.event_type) { + case EventType::KEY_DOWN: + + event_mgr.queue_event<KeyPressEvent>( + {.repeat = event.data.key_data.key_repeat, .key = event.data.key_data.key}); + break; + case EventType::KEY_UP: + event_mgr.queue_event<KeyReleaseEvent>({.key = event.data.key_data.key}); + break; + case EventType::SHUTDOWN: + event_mgr.queue_event<ShutDownEvent>({}); + break; + case EventType::WINDOW_EXPOSE: + event_mgr.queue_event<WindowExposeEvent>({}); + break; + case EventType::WINDOW_RESIZE: + event_mgr.queue_event<WindowResizeEvent>( + WindowResizeEvent{.dimensions = event.data.window_data.resize_dimension}); + break; + case EventType::WINDOW_MOVE: + event_mgr.queue_event<WindowMoveEvent>( + {.delta_move = event.data.window_data.move_delta}); + break; + case EventType::WINDOW_MINIMIZE: + event_mgr.queue_event<WindowMinimizeEvent>({}); + break; + case EventType::WINDOW_MAXIMIZE: + event_mgr.queue_event<WindowMaximizeEvent>({}); + break; + case EventType::WINDOW_FOCUS_GAIN: + event_mgr.queue_event<WindowFocusGainEvent>({}); + break; + case EventType::WINDOW_FOCUS_LOST: + event_mgr.queue_event<WindowFocusLostEvent>({}); + break; + default: + break; + } +} + +void InputSystem::handle_move(const EventData & event_data, const vec2 & mouse_pos) { + ComponentManager & mgr = this->mediator.component_manager; + EventManager & event_mgr = this->mediator.event_manager; + RefVector<Button> buttons = mgr.get_components_by_type<Button>(); + + for (Button & button : buttons) { + if (!button.active) continue; + Metadata & metadata + = mgr.get_components_by_id<Metadata>(button.game_object_id).front(); + Transform & transform + = mgr.get_components_by_id<Transform>(button.game_object_id).front(); + bool was_hovering = button.hover; + if (this->is_mouse_inside_button(mouse_pos, button, transform)) { + button.hover = true; + if (!was_hovering) { + event_mgr.trigger_event<ButtonEnterEvent>(metadata); + } + } else { + button.hover = false; + if (was_hovering) { + event_mgr.trigger_event<ButtonExitEvent>(metadata); + } + } + } +} + +void InputSystem::handle_click(const MouseButton & mouse_button, const vec2 & mouse_pos) { + ComponentManager & mgr = this->mediator.component_manager; + EventManager & event_mgr = this->mediator.event_manager; + RefVector<Button> buttons = mgr.get_components_by_type<Button>(); + + for (Button & button : buttons) { + if (!button.active) continue; + Metadata & metadata + = mgr.get_components_by_id<Metadata>(button.game_object_id).front(); + Transform & transform + = mgr.get_components_by_id<Transform>(button.game_object_id).front(); + + if (this->is_mouse_inside_button(mouse_pos, button, transform)) { + event_mgr.trigger_event<ButtonPressEvent>(metadata); + } + } +} + +bool InputSystem::is_mouse_inside_button(const vec2 & mouse_pos, const Button & button, + const Transform & transform) { + int actual_x = transform.position.x + button.offset.x; + int actual_y = transform.position.y + button.offset.y; + + int half_width = button.dimensions.x / 2; + int half_height = button.dimensions.y / 2; + + // Check if the mouse is within the button's boundaries + return mouse_pos.x >= actual_x - half_width && mouse_pos.x <= actual_x + half_width + && mouse_pos.y >= actual_y - half_height && mouse_pos.y <= actual_y + half_height; +} diff --git a/src/crepe/system/InputSystem.h b/src/crepe/system/InputSystem.h new file mode 100644 index 0000000..0f1bfa1 --- /dev/null +++ b/src/crepe/system/InputSystem.h @@ -0,0 +1,132 @@ +#pragma once + +#include "../api/Config.h" +#include "../facade/EventData.h" + +#include "../api/Event.h" +#include "../api/Metadata.h" +#include "../types.h" +#include "../util/OptionalRef.h" + +#include "System.h" + +namespace crepe { + +class Camera; +class Button; +class Transform; +//! Event triggered when a button is clicked +class ButtonPressEvent : public Event { +public: + //! Metadata of the button. + const Metadata & metadata; + /** + * \param metadata Metadata of the button pressed + */ + ButtonPressEvent(const Metadata & metadata) : metadata(metadata){}; +}; +//! Event triggered when the mouse enters a button +class ButtonEnterEvent : public Event { +public: + //! Metadata of the button. + const Metadata & metadata; + /** + * \param metadata Metadata of the button pressed + */ + ButtonEnterEvent(const Metadata & metadata) : metadata(metadata){}; +}; +//! Event triggered when the mouse leaves a button +class ButtonExitEvent : public Event { +public: + //! Metadata of the button. + const Metadata & metadata; + /** + * \param metadata Metadata of the button pressed + */ + ButtonExitEvent(const Metadata & metadata) : metadata(metadata){}; +}; + +/** + * \brief Handles the processing of input events created by SDLContext + * + * This system processes events such as mouse clicks, mouse movement, and keyboard + * actions. It is responsible for detecting interactions with UI buttons and + * passing the corresponding events to the registered listeners. + */ +class InputSystem : public System { +public: + using System::System; + + /** + * \brief Updates the system, processing all input events. + * This method processes all events and triggers corresponding actions. + */ + void fixed_update() override; + +private: + //! Stores the last position of the mouse when the button was pressed. + vec2 last_mouse_down_position; + // TODO: specify world/hud space and make regular `vec2` + + //! Stores the last mouse button pressed. + MouseButton last_mouse_button = MouseButton::NONE; + /** + * \brief Handles mouse-related events. + * \param event The event data for the mouse event. + * \param camera_origin The origin position of the camera in world space. + * \param current_cam The currently active camera. + * + * This method processes mouse events, adjusts the mouse position to world coordinates, + * and triggers the appropriate mouse-specific event handling logic. + */ + void handle_mouse_event(const EventData & event, const vec2 & camera_origin, + const Camera & current_cam); + /** + * \brief Handles non-mouse-related events. + * \param event The event data for the non-mouse event. + * + * This method processes events that do not involve the mouse, such as keyboard events, + * window events, and shutdown events, and triggers the corresponding event actions. + */ + void handle_non_mouse_event(const EventData & event); + /** + * \brief Handles the mouse click event. + * \param mouse_button The mouse button involved in the click. + * \param world_mouse_x The X coordinate of the mouse in world space. + * \param world_mouse_y The Y coordinate of the mouse in world space. + * + * This method processes the mouse click event and triggers the corresponding button action. + */ + void handle_click(const MouseButton & mouse_button, const vec2 & mouse_pos); + + /** + * \brief Handles the mouse movement event. + * \param event_data The event data containing information about the mouse movement. + * \param world_mouse_x The X coordinate of the mouse in world space. + * \param world_mouse_y The Y coordinate of the mouse in world space. + * + * This method processes the mouse movement event and updates the button hover state. + */ + void handle_move(const EventData & event_data, const vec2 & mouse_pos); + + /** + * \brief Checks if the mouse position is inside the bounds of the button. + * \param world_mouse_x The X coordinate of the mouse in world space. + * \param world_mouse_y The Y coordinate of the mouse in world space. + * \param button The button to check. + * \param transform The transform component of the button. + * \return True if the mouse is inside the button, false otherwise. + */ + bool is_mouse_inside_button(const vec2 & mouse_pos, const Button & button, + const Transform & transform); + + /** + * \brief Handles the button press event, calling the on_click callback if necessary. + * \param button The button being pressed. + * + * This method triggers the on_click action for the button when it is pressed. + */ + void handle_button_press(Button & button); +}; + +} // namespace crepe diff --git a/src/crepe/system/ParticleSystem.cpp b/src/crepe/system/ParticleSystem.cpp new file mode 100644 index 0000000..bbc7366 --- /dev/null +++ b/src/crepe/system/ParticleSystem.cpp @@ -0,0 +1,121 @@ +#include <chrono> +#include <cmath> +#include <cstdlib> +#include <ctime> + +#include "../api/ParticleEmitter.h" +#include "../api/Transform.h" +#include "../manager/ComponentManager.h" +#include "../manager/LoopTimerManager.h" + +#include "ParticleSystem.h" + +using namespace crepe; + +void ParticleSystem::fixed_update() { + // Get all emitters + const Mediator & mediator = this->mediator; + LoopTimerManager & loop_timer = mediator.loop_timer; + ComponentManager & mgr = mediator.component_manager; + float dt = loop_timer.get_scaled_fixed_delta_time().count(); + + RefVector<ParticleEmitter> emitters = mgr.get_components_by_type<ParticleEmitter>(); + + for (ParticleEmitter & emitter : emitters) { + // Get transform linked to emitter + const Transform & transform + = mgr.get_components_by_id<Transform>(emitter.game_object_id).front().get(); + + // Emit particles based on emission_rate + emitter.spawn_accumulator += emitter.data.emission_rate * dt; + while (emitter.spawn_accumulator >= 1.0) { + this->emit_particle(emitter, transform); + emitter.spawn_accumulator -= 1.0; + } + + // Update all particles + for (Particle & particle : emitter.particles) { + if (particle.active) { + particle.update(dt); + } + } + + // Check if within boundary + this->check_bounds(emitter, transform); + } +} + +void ParticleSystem::emit_particle(ParticleEmitter & emitter, const Transform & transform) { + constexpr float DEG_TO_RAD = M_PI / 180.0; + + vec2 initial_position = emitter.data.offset + transform.position; + float random_angle + = this->generate_random_angle(emitter.data.min_angle, emitter.data.max_angle); + + float random_speed + = this->generate_random_speed(emitter.data.min_speed, emitter.data.max_speed); + float angle_radians = random_angle * DEG_TO_RAD; + + vec2 velocity + = {random_speed * std::cos(angle_radians), random_speed * std::sin(angle_radians)}; + + for (Particle & particle : emitter.particles) { + if (!particle.active) { + particle.reset(emitter.data.end_lifespan, initial_position, velocity, + random_angle); + break; + } + } +} + +void ParticleSystem::check_bounds(ParticleEmitter & emitter, const Transform & transform) { + vec2 offset = emitter.data.boundary.offset + transform.position + emitter.data.offset; + float half_width = emitter.data.boundary.width / 2.0; + float half_height = emitter.data.boundary.height / 2.0; + + float left = offset.x - half_width; + float right = offset.x + half_width; + float top = offset.y - half_height; + float bottom = offset.y + half_height; + + for (Particle & particle : emitter.particles) { + const vec2 & position = particle.position; + bool within_bounds = (position.x >= left && position.x <= right && position.y >= top + && position.y <= bottom); + //if not within bounds do a reset or stop velocity + if (!within_bounds) { + if (emitter.data.boundary.reset_on_exit) { + particle.active = false; + } else { + particle.velocity = {0, 0}; + if (position.x < left) particle.position.x = left; + else if (position.x > right) particle.position.x = right; + if (position.y < top) particle.position.y = top; + else if (position.y > bottom) particle.position.y = bottom; + } + } + } +} + +float ParticleSystem::generate_random_angle(float min_angle, float max_angle) const { + if (min_angle == max_angle) { + return min_angle; + } else if (min_angle < max_angle) { + return min_angle + + static_cast<float>(std::rand() % static_cast<int>(max_angle - min_angle)); + } else { + float angle_offset = (360 - min_angle) + max_angle; + float random_angle + = min_angle + static_cast<float>(std::rand() % static_cast<int>(angle_offset)); + return (random_angle >= 360) ? random_angle - 360 : random_angle; + } +} + +float ParticleSystem::generate_random_speed(float min_speed, float max_speed) const { + if (min_speed == max_speed) { + return min_speed; + } else { + return min_speed + + static_cast<float>(std::rand() % static_cast<int>(max_speed - min_speed)); + } +} diff --git a/src/crepe/system/ParticleSystem.h b/src/crepe/system/ParticleSystem.h new file mode 100644 index 0000000..4296ff3 --- /dev/null +++ b/src/crepe/system/ParticleSystem.h @@ -0,0 +1,62 @@ +#pragma once + +#include <cstdint> + +#include "System.h" + +namespace crepe { + +class ParticleEmitter; +class Transform; + +/** + * \brief ParticleSystem class responsible for managing particle emission, updates, and bounds + * checking. + */ +class ParticleSystem : public System { +public: + using System::System; + /** + * \brief Updates all particle emitters by emitting particles, updating particle states, and + * checking bounds. + */ + void fixed_update() override; + +private: + /** + * \brief Emits a particle from the specified emitter based on its emission properties. + * + * \param emitter Reference to the ParticleEmitter. + * \param transform Const reference to the Transform component associated with the emitter. + */ + void emit_particle(ParticleEmitter & emitter, const Transform & transform); + + /** + * \brief Checks whether particles are within the emitter’s boundary, resets or stops + * particles if they exit. + * + * \param emitter Reference to the ParticleEmitter. + * \param transform Const reference to the Transform component associated with the emitter. + */ + void check_bounds(ParticleEmitter & emitter, const Transform & transform); + + /** + * \brief Generates a random angle for particle emission within the specified range. + * + * \param min_angle Minimum emission angle in degrees. + * \param max_angle Maximum emission angle in degrees. + * \return Random angle in degrees. + */ + float generate_random_angle(float min_angle, float max_angle) const; + + /** + * \brief Generates a random speed for particle emission within the specified range. + * + * \param min_speed Minimum emission speed. + * \param max_speed Maximum emission speed. + * \return Random speed. + */ + float generate_random_speed(float min_speed, float max_speed) const; +}; + +} // namespace crepe diff --git a/src/crepe/system/PhysicsSystem.cpp b/src/crepe/system/PhysicsSystem.cpp new file mode 100644 index 0000000..62f8132 --- /dev/null +++ b/src/crepe/system/PhysicsSystem.cpp @@ -0,0 +1,106 @@ +#include <cmath> + +#include "../api/Config.h" +#include "../api/Rigidbody.h" +#include "../api/Transform.h" +#include "../api/Vector2.h" +#include "../manager/ComponentManager.h" +#include "../manager/LoopTimerManager.h" +#include "../manager/Mediator.h" + +#include "PhysicsSystem.h" + +using namespace crepe; + +void PhysicsSystem::fixed_update() { + const Mediator & mediator = this->mediator; + ComponentManager & mgr = mediator.component_manager; + LoopTimerManager & loop_timer = mediator.loop_timer; + RefVector<Rigidbody> rigidbodies = mgr.get_components_by_type<Rigidbody>(); + float dt = loop_timer.get_scaled_fixed_delta_time().count(); + + float gravity = Config::get_instance().physics.gravity; + for (Rigidbody & rigidbody : rigidbodies) { + if (!rigidbody.active) continue; + Transform & transform + = mgr.get_components_by_id<Transform>(rigidbody.game_object_id).front().get(); + + switch (rigidbody.data.body_type) { + case Rigidbody::BodyType::DYNAMIC: + if (transform.game_object_id == rigidbody.game_object_id) { + // Add gravity + + if (rigidbody.data.mass <= 0) { + throw std::runtime_error("Mass must be greater than 0"); + } + + if (gravity <= 0) { + throw std::runtime_error("Config Gravity must be greater than 0"); + } + + if (rigidbody.data.gravity_scale > 0 && !rigidbody.data.constraints.y) { + rigidbody.data.linear_velocity.y + += (rigidbody.data.mass * rigidbody.data.gravity_scale * gravity + * dt); + } + // Add coefficient rotation + if (rigidbody.data.angular_velocity_coefficient > 0) { + rigidbody.data.angular_velocity + *= std::pow(rigidbody.data.angular_velocity_coefficient, dt); + } + + // Add coefficient movement horizontal + if (rigidbody.data.linear_velocity_coefficient.x > 0 + && !rigidbody.data.constraints.x) { + rigidbody.data.linear_velocity.x + *= std::pow(rigidbody.data.linear_velocity_coefficient.x, dt); + } + + // Add coefficient movement horizontal + if (rigidbody.data.linear_velocity_coefficient.y > 0 + && !rigidbody.data.constraints.y) { + rigidbody.data.linear_velocity.y + *= std::pow(rigidbody.data.linear_velocity_coefficient.y, dt); + } + + // Max velocity check + if (rigidbody.data.angular_velocity + > rigidbody.data.max_angular_velocity) { + rigidbody.data.angular_velocity = rigidbody.data.max_angular_velocity; + } else if (rigidbody.data.angular_velocity + < -rigidbody.data.max_angular_velocity) { + rigidbody.data.angular_velocity = -rigidbody.data.max_angular_velocity; + } + + // Set max velocity to maximum length + if (rigidbody.data.linear_velocity.length() + > rigidbody.data.max_linear_velocity) { + rigidbody.data.linear_velocity.normalize(); + rigidbody.data.linear_velocity *= rigidbody.data.max_linear_velocity; + } + + // Move object + if (!rigidbody.data.constraints.rotation) { + transform.rotation += rigidbody.data.angular_velocity * dt; + transform.rotation = std::fmod(transform.rotation, 360.0); + if (transform.rotation < 0) { + transform.rotation += 360.0; + } + } + if (!rigidbody.data.constraints.x) { + transform.position.x += rigidbody.data.linear_velocity.x * dt; + } + if (!rigidbody.data.constraints.y) { + transform.position.y += rigidbody.data.linear_velocity.y * dt; + } + } + break; + case Rigidbody::BodyType::KINEMATIC: + break; //(scripts) + case Rigidbody::BodyType::STATIC: + break; //(unmoveable objects) + default: + break; + } + } +} diff --git a/src/crepe/system/PhysicsSystem.h b/src/crepe/system/PhysicsSystem.h new file mode 100644 index 0000000..5ed624f --- /dev/null +++ b/src/crepe/system/PhysicsSystem.h @@ -0,0 +1,24 @@ +#pragma once + +#include "System.h" + +namespace crepe { + +/** + * \brief System that controls all physics + * + * This class is a physics system that uses a rigidbody and transform to add physics to a game + * object. + */ +class PhysicsSystem : public System { +public: + using System::System; + /** + * \brief updates the physics system. + * + * It calculates new velocties and changes the postion in the transform. + */ + void fixed_update() override; +}; + +} // namespace crepe diff --git a/src/crepe/system/RenderSystem.cpp b/src/crepe/system/RenderSystem.cpp new file mode 100644 index 0000000..33218f6 --- /dev/null +++ b/src/crepe/system/RenderSystem.cpp @@ -0,0 +1,160 @@ +#include <algorithm> +#include <cassert> +#include <cmath> +#include <functional> +#include <optional> +#include <stdexcept> +#include <vector> + +#include "../api/Camera.h" +#include "../api/ParticleEmitter.h" +#include "../api/Sprite.h" +#include "../api/Text.h" +#include "../api/Transform.h" +#include "../facade/Font.h" +#include "../facade/SDLContext.h" +#include "../facade/Texture.h" +#include "../manager/ComponentManager.h" +#include "../manager/ResourceManager.h" + +#include "RenderSystem.h" +#include "types.h" + +using namespace crepe; +using namespace std; + +void RenderSystem::clear_screen() { + SDLContext & ctx = this->mediator.sdl_context; + ctx.clear_screen(); +} + +void RenderSystem::present_screen() { + SDLContext & ctx = this->mediator.sdl_context; + ctx.present_screen(); +} + +void RenderSystem::update_camera() { + ComponentManager & mgr = this->mediator.component_manager; + SDLContext & ctx = this->mediator.sdl_context; + RefVector<Camera> cameras = mgr.get_components_by_type<Camera>(); + + if (cameras.size() == 0) throw std::runtime_error("No cameras in current scene"); + + for (Camera & cam : cameras) { + if (!cam.active) continue; + const Transform & transform + = mgr.get_components_by_id<Transform>(cam.game_object_id).front().get(); + vec2 new_camera_pos = transform.position + cam.data.postion_offset; + ctx.update_camera_view(cam, new_camera_pos); + return; + } + throw std::runtime_error("No active cameras in current scene"); +} + +bool sorting_comparison(const Sprite & a, const Sprite & b) { + if (a.data.sorting_in_layer != b.data.sorting_in_layer) + return a.data.sorting_in_layer < b.data.sorting_in_layer; + if (a.data.order_in_layer != b.data.order_in_layer) + return a.data.order_in_layer < b.data.order_in_layer; + + return false; +} + +RefVector<Sprite> RenderSystem::sort(RefVector<Sprite> & objs) const { + RefVector<Sprite> sorted_objs(objs); + std::sort(sorted_objs.begin(), sorted_objs.end(), sorting_comparison); + + return sorted_objs; +} + +void RenderSystem::frame_update() { + this->clear_screen(); + this->render(); + this->present_screen(); +} + +bool RenderSystem::render_particle(const Sprite & sprite, const double & scale) { + + ComponentManager & mgr = this->mediator.component_manager; + SDLContext & ctx = this->mediator.sdl_context; + ResourceManager & resource_manager = this->mediator.resource_manager; + Texture & res = resource_manager.get<Texture>(sprite.source); + + vector<reference_wrapper<ParticleEmitter>> emitters + = mgr.get_components_by_id<ParticleEmitter>(sprite.game_object_id); + + bool rendering_particles = false; + + for (const ParticleEmitter & em : emitters) { + if (&em.sprite != &sprite) continue; + rendering_particles = true; + if (!em.active) continue; + + for (const Particle & p : em.particles) { + if (!p.active) continue; + + ctx.draw(SDLContext::RenderContext{ + .sprite = sprite, + .texture = res, + .pos = p.position, + .angle = p.angle, + .scale = scale, + }); + } + } + return rendering_particles; +} +void RenderSystem::render_normal(const Sprite & sprite, const Transform & tm) { + SDLContext & ctx = this->mediator.sdl_context; + ResourceManager & resource_manager = this->mediator.resource_manager; + const Texture & res = resource_manager.get<Texture>(sprite.source); + + ctx.draw(SDLContext::RenderContext{ + .sprite = sprite, + .texture = res, + .pos = tm.position, + .angle = tm.rotation, + .scale = tm.scale, + }); +} + +void RenderSystem::render() { + ComponentManager & mgr = this->mediator.component_manager; + this->update_camera(); + + RefVector<Sprite> sprites = mgr.get_components_by_type<Sprite>(); + ResourceManager & resource_manager = this->mediator.resource_manager; + RefVector<Sprite> sorted_sprites = this->sort(sprites); + RefVector<Text> text_components = mgr.get_components_by_type<Text>(); + for (Text & text : text_components) { + const Transform & transform + = mgr.get_components_by_id<Transform>(text.game_object_id).front().get(); + this->render_text(text, transform); + } + for (const Sprite & sprite : sorted_sprites) { + if (!sprite.active) continue; + const Transform & transform + = mgr.get_components_by_id<Transform>(sprite.game_object_id).front().get(); + + bool rendered_particles = this->render_particle(sprite, transform.scale); + + if (rendered_particles) continue; + + this->render_normal(sprite, transform); + } +} +void RenderSystem::render_text(Text & text, const Transform & tm) { + SDLContext & ctx = this->mediator.sdl_context; + + if (!text.font.has_value()) { + text.font.emplace(ctx.get_font_from_name(text.font_family)); + } + + ResourceManager & resource_manager = this->mediator.resource_manager; + + if (!text.font.has_value()) { + return; + } + const Asset & font_asset = text.font.value(); + const Font & res = resource_manager.get<Font>(font_asset); +} diff --git a/src/crepe/system/RenderSystem.h b/src/crepe/system/RenderSystem.h new file mode 100644 index 0000000..656ad5b --- /dev/null +++ b/src/crepe/system/RenderSystem.h @@ -0,0 +1,83 @@ +#pragma once + +#include <cmath> + +#include "System.h" +#include "types.h" + +namespace crepe { + +class Camera; +class Sprite; +class Transform; +class Text; +/** + * \brief Manages rendering operations for all game objects. + * + * RenderSystem is responsible for rendering, clearing and presenting the screen, and + * managing the active camera. + */ +class RenderSystem : public System { +public: + using System::System; + /** + * \brief Updates the RenderSystem for the current frame. + * This method is called to perform all rendering operations for the current game frame. + */ + void frame_update() override; + +private: + //! Clears the screen in preparation for rendering. + void clear_screen(); + + //! Presents the rendered frame to the display. + void present_screen(); + + //! Updates the active camera used for rendering. + void update_camera(); + + //! Renders the whole screen + void render(); + + /** + * \brief Renders all the particles on the screen from a given sprite. + * + * \param sprite renders the particles with given texture + * \param tm the Transform component for scale. This is not a const reference because each + * particle has a position and rotation that needs to overwrite the transform position and + * rotation without overwriting the current transform. and because the transform + * constructor is now protected i cannot make tmp inside + * \return true if particles have been rendered + */ + bool render_particle(const Sprite & sprite, const double & scale); + /** + * \brief Renders all Text components + * + * \param text The text component to be rendered. + * \param tm the Transform component that holds the position,rotation and scale + */ + void render_text(Text & text, const Transform & tm); + /** + * \brief renders a sprite with a Transform component on the screen + * + * \param sprite the sprite component that holds all the data + * \param tm the Transform component that holds the position,rotation and scale + */ + void render_normal(const Sprite & sprite, const Transform & tm); + + /** + * \brief sort a vector sprite objects with + * + * \param objs the vector that will do a sorting algorithm on + * \return returns a sorted reference vector + */ + RefVector<Sprite> sort(RefVector<Sprite> & objs) const; + + /** + * \todo Add text rendering using SDL_ttf for text components. + * \todo Implement a text component and a button component. + * \todo Consider adding text input functionality. + */ +}; + +} // namespace crepe diff --git a/src/crepe/system/ReplaySystem.cpp b/src/crepe/system/ReplaySystem.cpp new file mode 100644 index 0000000..efc3be4 --- /dev/null +++ b/src/crepe/system/ReplaySystem.cpp @@ -0,0 +1,54 @@ +#include "../manager/ReplayManager.h" +#include "../manager/SystemManager.h" + +#include "EventSystem.h" +#include "RenderSystem.h" +#include "ReplaySystem.h" + +using namespace crepe; +using namespace std; + +void ReplaySystem::fixed_update() { + ReplayManager & replay = this->mediator.replay_manager; + ReplayManager::State state = replay.get_state(); + ReplayManager::State last_state = this->last_state; + this->last_state = state; + + switch (state) { + case ReplayManager::IDLE: + break; + case ReplayManager::RECORDING: { + replay.frame_record(); + break; + } + case ReplayManager::PLAYING: { + if (last_state != ReplayManager::PLAYING) this->playback_begin(); + bool last = replay.frame_step(); + if (last) this->playback_end(); + break; + } + } +} + +void ReplaySystem::playback_begin() { + SystemManager & systems = this->mediator.system_manager; + ComponentManager & components = this->mediator.component_manager; + + this->playback = { + .components = components.save(), + .systems = systems.save(), + }; + + systems.disable_all(); + systems.get_system<RenderSystem>().active = true; + systems.get_system<ReplaySystem>().active = true; + systems.get_system<EventSystem>().active = true; +} + +void ReplaySystem::playback_end() { + SystemManager & systems = this->mediator.system_manager; + ComponentManager & components = this->mediator.component_manager; + + components.restore(this->playback.components); + systems.restore(this->playback.systems); +} diff --git a/src/crepe/system/ReplaySystem.h b/src/crepe/system/ReplaySystem.h new file mode 100644 index 0000000..bbc8d76 --- /dev/null +++ b/src/crepe/system/ReplaySystem.h @@ -0,0 +1,44 @@ +#pragma once + +#include "../manager/ReplayManager.h" +#include "../manager/SystemManager.h" + +#include "System.h" + +namespace crepe { + +/** + * \brief ReplayManager helper system + * + * This system records and replays recordings using ReplayManager. + */ +class ReplaySystem : public System { +public: + using System::System; + + void fixed_update() override; + +private: + //! Last ReplayManager state + ReplayManager::State last_state = ReplayManager::IDLE; + + /** + * \brief Playback snapshot + * + * When starting playback, the component state is saved and most systems are disabled. This + * struct stores the engine state before ReplayManager::play is called. + */ + struct Snapshot { + ComponentManager::Snapshot components; + SystemManager::Snapshot systems; + }; + //! Before playback snapshot + Snapshot playback; + + //! Snapshot state and disable systems during playback + void playback_begin(); + //! Restore state from before \c playback_begin() + void playback_end(); +}; + +} // namespace crepe diff --git a/src/crepe/system/ScriptSystem.cpp b/src/crepe/system/ScriptSystem.cpp new file mode 100644 index 0000000..93b4853 --- /dev/null +++ b/src/crepe/system/ScriptSystem.cpp @@ -0,0 +1,40 @@ +#include "../api/BehaviorScript.h" +#include "../api/Script.h" +#include "../manager/ComponentManager.h" + +#include "ScriptSystem.h" + +using namespace std; +using namespace crepe; + +void ScriptSystem::fixed_update() { + LoopTimerManager & timer = this->mediator.loop_timer; + duration_t delta_time = timer.get_scaled_fixed_delta_time(); + this->update(&Script::fixed_update, delta_time); +} + +void ScriptSystem::frame_update() { + LoopTimerManager & timer = this->mediator.loop_timer; + duration_t delta_time = timer.get_delta_time(); + this->update(&Script::frame_update, delta_time); +} + +void ScriptSystem::update(void (Script::*update_function)(duration_t), + const duration_t & delta_time) { + ComponentManager & mgr = this->mediator.component_manager; + RefVector<BehaviorScript> behavior_scripts = mgr.get_components_by_type<BehaviorScript>(); + + for (BehaviorScript & behavior_script : behavior_scripts) { + if (!behavior_script.active) continue; + + Script * script = behavior_script.script.get(); + if (script == nullptr) continue; + + if (!script->initialized) { + script->init(); + script->initialized = true; + } + + (*script.*update_function)(delta_time); + } +} diff --git a/src/crepe/system/ScriptSystem.h b/src/crepe/system/ScriptSystem.h new file mode 100644 index 0000000..257b615 --- /dev/null +++ b/src/crepe/system/ScriptSystem.h @@ -0,0 +1,37 @@ +#pragma once + +#include "../manager/LoopTimerManager.h" + +#include "System.h" + +namespace crepe { + +class Script; + +/** + * \brief Script system + * + * The script system is responsible for all \c BehaviorScript components, and calls the methods + * on classes derived from \c Script. + */ +class ScriptSystem : public System { +public: + using System::System; + +public: + //! Call Script::fixed_update() on all active \c BehaviorScript instances + void fixed_update() override; + //! Call Script::frame_update() on all active \c BehaviorScript instances + void frame_update() override; + +private: + /** + * \brief Call Script `*_update` member function on all active \c BehaviorScript instances + * + * \note This routine also calls Script::init() if this has not been done before on the \c + * BehaviorScript instance. + */ + void update(void (Script::*update_function)(duration_t), const duration_t & delta_time); +}; + +} // namespace crepe diff --git a/src/crepe/system/System.cpp b/src/crepe/system/System.cpp new file mode 100644 index 0000000..ecc740d --- /dev/null +++ b/src/crepe/system/System.cpp @@ -0,0 +1,5 @@ +#include "System.h" + +using namespace crepe; + +System::System(const Mediator & mediator) : mediator(mediator) {} diff --git a/src/crepe/system/System.h b/src/crepe/system/System.h new file mode 100644 index 0000000..e2ce7eb --- /dev/null +++ b/src/crepe/system/System.h @@ -0,0 +1,32 @@ +#pragma once + +#include "../manager/Mediator.h" + +namespace crepe { + +class ComponentManager; + +/** + * \brief Base ECS system class + * + * This class is used as the base for all system classes. Classes derived from System must + * implement the System::update() method and copy Script::Script with the `using`-syntax. + */ +class System { +public: + //! Code that runs in the fixed loop + virtual void fixed_update() {}; + //! Code that runs in the frame loop + virtual void frame_update() {}; + //! Indicates that the update functions of this system should be run + bool active = true; + +public: + System(const Mediator & m); + virtual ~System() = default; + +protected: + const Mediator & mediator; +}; + +} // namespace crepe diff --git a/src/crepe/types.h b/src/crepe/types.h new file mode 100644 index 0000000..69cc526 --- /dev/null +++ b/src/crepe/types.h @@ -0,0 +1,30 @@ +#pragma once + +#include "api/Vector2.h" + +#include <cstdint> +#include <functional> +#include <vector> + +namespace crepe { + +//! GameObject ID +typedef uint32_t game_object_id_t; + +//! vector of reference_wrapper +template <typename T> +using RefVector = std::vector<std::reference_wrapper<T>>; + +//! Default Vector2<int> type +typedef Vector2<int> ivec2; + +//! Default Vector2<unsigned int> type +typedef Vector2<unsigned int> uvec2; + +//! Default Vector2<float> type +typedef Vector2<float> vec2; + +//! Default Vector2<double> type +typedef Vector2<double> dvec2; + +}; // namespace crepe diff --git a/src/crepe/util/CMakeLists.txt b/src/crepe/util/CMakeLists.txt index 100f028..94ed906 100644 --- a/src/crepe/util/CMakeLists.txt +++ b/src/crepe/util/CMakeLists.txt @@ -1,9 +1,15 @@ target_sources(crepe PUBLIC - log.cpp + LogColor.cpp + Log.cpp ) target_sources(crepe PUBLIC FILE_SET HEADERS FILES - color.h - log.h + LogColor.h + Log.h + Log.hpp + Proxy.h + Proxy.hpp + OptionalRef.h + OptionalRef.hpp ) diff --git a/src/crepe/util/Log.cpp b/src/crepe/util/Log.cpp new file mode 100644 index 0000000..ce25a1d --- /dev/null +++ b/src/crepe/util/Log.cpp @@ -0,0 +1,38 @@ +#include <iostream> +#include <string> + +#include "../api/Config.h" + +#include "Log.h" +#include "LogColor.h" + +using namespace crepe; +using namespace std; + +string Log::prefix(const Level & level) { + switch (level) { + case Level::TRACE: + return LogColor().fg_white().str("[TRACE]") + " "; + case Level::DEBUG: + return LogColor().fg_magenta().str("[DEBUG]") + " "; + case Level::INFO: + return LogColor().fg_blue().str("[INFO]") + " "; + case Level::WARNING: + return LogColor().fg_yellow().str("[WARN]") + " "; + case Level::ERROR: + return LogColor().fg_red().str("[ERROR]") + " "; + } + return ""; +} + +void Log::log(const Level & level, const string & msg) { + auto & cfg = Config::get_instance(); + if (level < cfg.log.level) return; + + string out = Log::prefix(level) + msg; + if (!out.ends_with("\n")) out += "\n"; + + // TODO: also log to file or smth + cout.write(out.data(), out.size()); + cout.flush(); +} diff --git a/src/crepe/util/Log.h b/src/crepe/util/Log.h new file mode 100644 index 0000000..b43fe30 --- /dev/null +++ b/src/crepe/util/Log.h @@ -0,0 +1,63 @@ +#pragma once + +#include <format> + +namespace crepe { + +/** + * \brief Logging utility + * + * This class is used to output log messages to the console and/or log files. + */ +class Log { +public: + //! Log message severity + enum Level { + TRACE, //!< Include (internal) function calls + DEBUG, //!< Include dbg_logf output + INFO, //!< General-purpose messages + WARNING, //!< Non-fatal errors + ERROR, //!< Fatal errors + }; + + /** + * \brief Log a formatted message + * + * \param level Message severity + * \param msg Formatted message + */ + static void log(const Level & level, const std::string & msg); + + /** + * \brief Format a message and log it + * + * \param level Message severity + * \param fmt Message format + * \param args Format arguments + */ + template <class... Args> + static void logf(const Level & level, std::format_string<Args...> fmt, Args &&... args); + + /** + * \brief Format a message and log it (with default severity \c INFO) + * + * \param fmt Message format + * \param args Format arguments + */ + template <class... Args> + static void logf(std::format_string<Args...> fmt, Args &&... args); + +private: + /** + * \brief Output a message prefix depending on the log level + * + * \param level Message severity + * + * \return Colored message severity prefix string + */ + static std::string prefix(const Level & level); +}; + +} // namespace crepe + +#include "Log.hpp" diff --git a/src/crepe/util/Log.hpp b/src/crepe/util/Log.hpp new file mode 100644 index 0000000..c2156cd --- /dev/null +++ b/src/crepe/util/Log.hpp @@ -0,0 +1,17 @@ +#pragma once + +#include "Log.h" + +namespace crepe { + +template <class... Args> +void Log::logf(std::format_string<Args...> fmt, Args &&... args) { + Log::logf(Level::INFO, fmt, std::forward<Args>(args)...); +} + +template <class... Args> +void Log::logf(const Level & level, std::format_string<Args...> fmt, Args &&... args) { + Log::log(level, std::format(fmt, std::forward<Args>(args)...)); +} + +} // namespace crepe diff --git a/src/crepe/util/LogColor.cpp b/src/crepe/util/LogColor.cpp new file mode 100644 index 0000000..5411898 --- /dev/null +++ b/src/crepe/util/LogColor.cpp @@ -0,0 +1,46 @@ +#include <cstdarg> + +#include "../api/Config.h" + +#include "LogColor.h" + +using namespace crepe; +using namespace std; + +static constexpr const char * RESET_CODE = "\e[0m"; + +const string LogColor::str(const string & content) const { + auto & cfg = Config::get_instance(); + string out = content; + if (cfg.log.color) out = this->code + out; + if (content.size() == 0) return out; + if (cfg.log.color) out = out + RESET_CODE; + return out; +} + +LogColor & LogColor::add_code(unsigned int code) { + this->code += format("\e[{}m", code); + return *this; +} + +LogColor & LogColor::reset() { + this->code = RESET_CODE; + return *this; +} + +LogColor & LogColor::fg_black(bool bright) { return this->add_code(bright ? 90 : 30); } +LogColor & LogColor::fg_red(bool bright) { return this->add_code(bright ? 91 : 31); } +LogColor & LogColor::fg_green(bool bright) { return this->add_code(bright ? 92 : 32); } +LogColor & LogColor::fg_yellow(bool bright) { return this->add_code(bright ? 93 : 33); } +LogColor & LogColor::fg_blue(bool bright) { return this->add_code(bright ? 94 : 34); } +LogColor & LogColor::fg_magenta(bool bright) { return this->add_code(bright ? 95 : 35); } +LogColor & LogColor::fg_cyan(bool bright) { return this->add_code(bright ? 96 : 36); } +LogColor & LogColor::fg_white(bool bright) { return this->add_code(bright ? 97 : 37); } +LogColor & LogColor::bg_black(bool bright) { return this->add_code(bright ? 100 : 40); } +LogColor & LogColor::bg_red(bool bright) { return this->add_code(bright ? 101 : 41); } +LogColor & LogColor::bg_green(bool bright) { return this->add_code(bright ? 102 : 42); } +LogColor & LogColor::bg_yellow(bool bright) { return this->add_code(bright ? 103 : 43); } +LogColor & LogColor::bg_blue(bool bright) { return this->add_code(bright ? 104 : 44); } +LogColor & LogColor::bg_magenta(bool bright) { return this->add_code(bright ? 105 : 45); } +LogColor & LogColor::bg_cyan(bool bright) { return this->add_code(bright ? 106 : 46); } +LogColor & LogColor::bg_white(bool bright) { return this->add_code(bright ? 107 : 47); } diff --git a/src/crepe/util/LogColor.h b/src/crepe/util/LogColor.h new file mode 100644 index 0000000..132fb94 --- /dev/null +++ b/src/crepe/util/LogColor.h @@ -0,0 +1,80 @@ +#pragma once + +#include <string> + +namespace crepe { + +/** + * \brief Utility class for coloring text using ANSI escape codes + * + * \note Most methods in this class return a reference to \c this, which may be + * used to chain multiple display attributes. + */ +class LogColor { +public: + /** + * \brief Get color code as STL string + * + * \param content If given, color this string and append a color reset escape sequence. + * + * \returns Color escape sequence + */ + const std::string str(const std::string & content = "") const; + +public: + //! Reset color to default foreground and background color + LogColor & reset(); + +public: + /** + * \name Foreground colors + * + * These functions set the foreground (text) color. The \c bright parameter + * makes the color brighter, or bold on some terminals. + * \{ + */ + LogColor & fg_black(bool bright = false); + LogColor & fg_red(bool bright = false); + LogColor & fg_green(bool bright = false); + LogColor & fg_yellow(bool bright = false); + LogColor & fg_blue(bool bright = false); + LogColor & fg_magenta(bool bright = false); + LogColor & fg_cyan(bool bright = false); + LogColor & fg_white(bool bright = false); + /// \} + +public: + /** + * \name Background colors + * + * These functions set the background color. The \c bright parameter makes + * the color brighter. + * \{ + */ + LogColor & bg_black(bool bright = false); + LogColor & bg_red(bool bright = false); + LogColor & bg_green(bool bright = false); + LogColor & bg_yellow(bool bright = false); + LogColor & bg_blue(bool bright = false); + LogColor & bg_magenta(bool bright = false); + LogColor & bg_cyan(bool bright = false); + LogColor & bg_white(bool bright = false); + /// \} + +private: + /** + * \brief Append SGR escape sequence to \c this->code + * + * \param code SGR attribute number + * + * See <https://en.wikipedia.org/wiki/ANSI_escape_code> for magic number + * reference. + */ + LogColor & add_code(unsigned int code); + +private: + //! Color escape sequence + std::string code = ""; +}; + +} // namespace crepe diff --git a/src/crepe/util/OptionalRef.h b/src/crepe/util/OptionalRef.h new file mode 100644 index 0000000..1b2cb3f --- /dev/null +++ b/src/crepe/util/OptionalRef.h @@ -0,0 +1,66 @@ +#pragma once + +namespace crepe { + +/** + * \brief Optional reference utility + * + * This class doesn't need to know the full definition of \c T to be used. + * + * \tparam T Value type + */ +template <typename T> +class OptionalRef { +public: + //! Initialize empty (nonexistant) reference + OptionalRef() = default; + //! Initialize reference with value + OptionalRef(T & ref); + /** + * \brief Assign new reference + * + * \param ref Reference to assign + * + * \return Reference to this (required for operator) + */ + OptionalRef<T> & operator=(T & ref); + /** + * \brief Retrieve this reference (cast) + * + * \returns Internal reference if it is set + * + * \throws std::runtime_error if this function is called while the reference it not set + */ + operator T &() const; + /** + * \brief Retrieve this reference (member access) + * + * \returns Internal reference if it is set + * + * \throws std::runtime_error if this function is called while the reference it not set + */ + T * operator->() const; + /** + * \brief Check if this reference is not empty + * + * \returns `true` if reference is set, or `false` if it is not + */ + explicit operator bool() const noexcept; + + /** + * \brief Make this reference empty + */ + void clear() noexcept; + +private: + /** + * \brief Reference to the value of type \c T + * + * \note This raw pointer is *not* managed, and only used as a reference! + */ + T * ref = nullptr; +}; + +} // namespace crepe + +#include "OptionalRef.hpp" diff --git a/src/crepe/util/OptionalRef.hpp b/src/crepe/util/OptionalRef.hpp new file mode 100644 index 0000000..5e36b3a --- /dev/null +++ b/src/crepe/util/OptionalRef.hpp @@ -0,0 +1,44 @@ +#pragma once + +#include <stdexcept> + +#include "OptionalRef.h" + +namespace crepe { + +template <typename T> +OptionalRef<T>::OptionalRef(T & ref) { + this->ref = &ref; +} + +template <typename T> +OptionalRef<T>::operator T &() const { + if (this->ref == nullptr) + throw std::runtime_error("OptionalRef: attempt to dereference nullptr"); + return *this->ref; +} + +template <typename T> +T * OptionalRef<T>::operator->() const { + if (this->ref == nullptr) + throw std::runtime_error("OptionalRef: attempt to dereference nullptr"); + return this->ref; +} + +template <typename T> +OptionalRef<T> & OptionalRef<T>::operator=(T & ref) { + this->ref = &ref; + return *this; +} + +template <typename T> +OptionalRef<T>::operator bool() const noexcept { + return this->ref != nullptr; +} + +template <typename T> +void OptionalRef<T>::clear() noexcept { + this->ref = nullptr; +} + +} // namespace crepe diff --git a/src/crepe/util/Proxy.h b/src/crepe/util/Proxy.h new file mode 100644 index 0000000..789144a --- /dev/null +++ b/src/crepe/util/Proxy.h @@ -0,0 +1,34 @@ +#pragma once + +#include "ValueBroker.h" + +namespace crepe { + +/** + * \brief Utility wrapper for \c ValueBroker + * + * This class can be used to to wrap a ValueBroker instance so it behaves like a regular + * variable. + * + * \tparam T Type of the underlying variable + */ +template <typename T> +class Proxy { +public: + //! Set operator + Proxy & operator=(Proxy &); + //! Set operator + Proxy & operator=(const T &); + //! Get operator + operator const T &(); + +public: + Proxy(ValueBroker<T>); + +private: + ValueBroker<T> broker; +}; + +} // namespace crepe + +#include "Proxy.hpp" diff --git a/src/crepe/util/Proxy.hpp b/src/crepe/util/Proxy.hpp new file mode 100644 index 0000000..ef2b69f --- /dev/null +++ b/src/crepe/util/Proxy.hpp @@ -0,0 +1,27 @@ +#pragma once + +#include "Proxy.h" + +namespace crepe { + +template <typename T> +Proxy<T>::Proxy(ValueBroker<T> broker) : broker(broker) {} + +template <typename T> +Proxy<T> & Proxy<T>::operator=(const T & val) { + this->broker.set(val); + return *this; +} + +template <typename T> +Proxy<T> & Proxy<T>::operator=(Proxy & proxy) { + this->broker.set(T(proxy)); + return *this; +} + +template <typename T> +Proxy<T>::operator const T &() { + return this->broker.get(); +} + +} // namespace crepe diff --git a/src/crepe/util/color.h b/src/crepe/util/color.h deleted file mode 100644 index 066c9d3..0000000 --- a/src/crepe/util/color.h +++ /dev/null @@ -1,41 +0,0 @@ -#pragma once - -namespace crepe::util::color { - -constexpr const char * RESET = "\e[0m"; - -constexpr const char * FG_BLACK = "\e[30m"; -constexpr const char * FG_RED = "\e[31m"; -constexpr const char * FG_GREEN = "\e[32m"; -constexpr const char * FG_YELLOW = "\e[33m"; -constexpr const char * FG_BLUE = "\e[34m"; -constexpr const char * FG_MAGENTA = "\e[35m"; -constexpr const char * FG_CYAN = "\e[36m"; -constexpr const char * FG_WHITE = "\e[37m"; -constexpr const char * BG_BLACK = "\e[40m"; -constexpr const char * BG_RED = "\e[41m"; -constexpr const char * BG_GREEN = "\e[42m"; -constexpr const char * BG_YELLOW = "\e[43m"; -constexpr const char * BG_BLUE = "\e[44m"; -constexpr const char * BG_MAGENTA = "\e[45m"; -constexpr const char * BG_CYAN = "\e[46m"; -constexpr const char * BG_WHITE = "\e[47m"; - -constexpr const char * FG_BLACK_BRIGHT = "\e[90m"; -constexpr const char * FG_RED_BRIGHT = "\e[91m"; -constexpr const char * FG_GREEN_BRIGHT = "\e[92m"; -constexpr const char * FG_YELLOW_BRIGHT = "\e[93m"; -constexpr const char * FG_BLUE_BRIGHT = "\e[94m"; -constexpr const char * FG_MAGENTA_BRIGHT = "\e[95m"; -constexpr const char * FG_CYAN_BRIGHT = "\e[96m"; -constexpr const char * FG_WHITE_BRIGHT = "\e[97m"; -constexpr const char * BG_BLACK_BRIGHT = "\e[100m"; -constexpr const char * BG_RED_BRIGHT = "\e[101m"; -constexpr const char * BG_GREEN_BRIGHT = "\e[102m"; -constexpr const char * BG_YELLOW_BRIGHT = "\e[103m"; -constexpr const char * BG_BLUE_BRIGHT = "\e[104m"; -constexpr const char * BG_MAGENTA_BRIGHT = "\e[105m"; -constexpr const char * BG_CYAN_BRIGHT = "\e[106m"; -constexpr const char * BG_WHITE_BRIGHT = "\e[107m"; - -} // namespace crepe::util::color diff --git a/src/crepe/util/dbg.h b/src/crepe/util/dbg.h new file mode 100644 index 0000000..c7283ee --- /dev/null +++ b/src/crepe/util/dbg.h @@ -0,0 +1,18 @@ +#pragma once + +#include "Log.h" +#include "LogColor.h" + +// utility macros +#define _crepe_logf_here(level, fmt, ...) \ + crepe::Log::logf(level, "{}" fmt, \ + crepe::LogColor().fg_white(false).str(std::format( \ + "{} ({}:{})", __PRETTY_FUNCTION__, __FILE_NAME__, __LINE__)), \ + __VA_ARGS__) + +// very illegal global function-style macros +// NOLINTBEGIN +#define dbg_logf(fmt, ...) _crepe_logf_here(crepe::Log::Level::DEBUG, ": " fmt, __VA_ARGS__) +#define dbg_log(str) _crepe_logf_here(crepe::Log::Level::DEBUG, ": {}", str) +#define dbg_trace() _crepe_logf_here(crepe::Log::Level::TRACE, "", "") +// NOLINTEND diff --git a/src/crepe/util/log.cpp b/src/crepe/util/log.cpp deleted file mode 100644 index f91d52c..0000000 --- a/src/crepe/util/log.cpp +++ /dev/null @@ -1,50 +0,0 @@ -#include <cstdarg> -#include <cstdio> -#include <cstdlib> -#include <string> - -#include "log.h" - -using namespace crepe::util; - -static const char * const LOG_PREFIX[] = { - [log_level::DEBUG] = "[DBG] ", - [log_level::INFO] = "[INFO] ", - [log_level::WARNING] = "[WARN] ", - [log_level::ERROR] = "[ERR] ", -}; - -static void va_logf(enum log_level level, va_list args, const std::string fmt) { - va_list args_copy; - va_copy(args_copy, args); - - // prepend log level and ensure newline - std::string format_fixed = LOG_PREFIX[level] + fmt; - if (!format_fixed.ends_with("\n")) format_fixed += "\n"; - - size_t sz = vsnprintf(NULL, 0, format_fixed.c_str(), args_copy) + 1; - char * msg = (char *) malloc(sz); - va_end(args_copy); - - vsnprintf(msg, sz, format_fixed.c_str(), args); - - // TODO: also log to file or smth - printf("%s", msg); - fflush(stdout); - - free(msg); -} - -void crepe::util::logf(const char * fmt, ...) { - va_list args; - va_start(args, fmt); - va_logf(crepe::util::log_level::DEBUG, args, fmt); - va_end(args); -} - -void crepe::util::logf(log_level level, const char * fmt, ...) { - va_list args; - va_start(args, fmt); - va_logf(level, args, fmt); - va_end(args); -} diff --git a/src/crepe/util/log.h b/src/crepe/util/log.h deleted file mode 100644 index fa5f633..0000000 --- a/src/crepe/util/log.h +++ /dev/null @@ -1,36 +0,0 @@ -#pragma once - -// allow user to disable debug macros -#ifndef CREPE_DISABLE_MACROS - -#include "color.h" - -// utility macros -#define _crepe_logf_here(fmt, ...) \ - crepe::util::logf(util::log_level::DEBUG, "%s%s (%s:%d)" fmt "\n", \ - crepe::util::color::FG_WHITE, __PRETTY_FUNCTION__, \ - __FILE_NAME__, __LINE__, crepe::util::color::RESET, \ - __VA_ARGS__) - -// very illegal global function-style macros -// NOLINTBEGIN -#define dbg_logf(fmt, ...) _crepe_logf_here(": " fmt, __VA_ARGS__) -#define dbg_log(str) _crepe_logf_here("%s: " str, "") -#define dbg_trace() _crepe_logf_here("%s", "") -// NOLINTEND - -#endif - -namespace crepe::util { - -enum log_level { - DEBUG, - INFO, - WARNING, - ERROR, -}; - -void logf(const char * fmt, ...); -void logf(enum log_level level, const char * fmt, ...); - -} // namespace crepe::util |