diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/crepe/api/CMakeLists.txt | 4 | ||||
| -rw-r--r-- | src/crepe/api/LoopManager.cpp | 9 | ||||
| -rw-r--r-- | src/crepe/api/LoopManager.h | 19 | ||||
| -rw-r--r-- | src/crepe/api/LoopTimer.cpp | 90 | ||||
| -rw-r--r-- | src/crepe/api/LoopTimer.h | 105 | ||||
| -rw-r--r-- | src/crepe/facade/SDLContext.h | 1 |
6 files changed, 128 insertions, 100 deletions
diff --git a/src/crepe/api/CMakeLists.txt b/src/crepe/api/CMakeLists.txt index 87cbb09..85696c4 100644 --- a/src/crepe/api/CMakeLists.txt +++ b/src/crepe/api/CMakeLists.txt @@ -18,6 +18,8 @@ target_sources(crepe PUBLIC Vector2.cpp Camera.cpp Animator.cpp + LoopManager.cpp + LoopTimer.cpp ) target_sources(crepe PUBLIC FILE_SET HEADERS FILES @@ -42,4 +44,6 @@ target_sources(crepe PUBLIC FILE_SET HEADERS FILES SceneManager.hpp Camera.h Animator.h + LoopManager.h + LoopTimer.h ) diff --git a/src/crepe/api/LoopManager.cpp b/src/crepe/api/LoopManager.cpp index f477efb..ea63bf6 100644 --- a/src/crepe/api/LoopManager.cpp +++ b/src/crepe/api/LoopManager.cpp @@ -8,14 +8,7 @@ using namespace crepe; -LoopManager::LoopManager( - const RenderSystem & renderSystem, const SDLContext & sdlContext, - const LoopTimer & loopTimer, const ScriptSystem & scriptSystem, - const SoundSystem & soundSystem, const ParticleSystem & particleSystem, - const PhysicsSystem & physicsSystem, const AnimatorSystem & animatorSystem, - const CollisionSystem & collisionSystem) { - // Initialize systems if needed - // Example: this->renderSystem = renderSystem; +LoopManager::LoopManager() { } void LoopManager::process_input() { SDLContext::get_instance().handle_events(this->game_running); diff --git a/src/crepe/api/LoopManager.h b/src/crepe/api/LoopManager.h index 5d8c91b..d4668b8 100644 --- a/src/crepe/api/LoopManager.h +++ b/src/crepe/api/LoopManager.h @@ -1,6 +1,6 @@ #pragma once -namespace crepe { +#include <memory> class RenderSystem; class SDLContext; @@ -11,14 +11,14 @@ class ParticleSystem; class PhysicsSystem; class AnimatorSystem; class CollisionSystem; +namespace crepe { + + class LoopManager { public: void start(); - LoopManager(const RenderSystem &, const SDLContext &, const LoopTimer &, - const ScriptSystem &, const SoundSystem &, - const ParticleSystem &, const PhysicsSystem &, - const AnimatorSystem &, const CollisionSystem &); + LoopManager(); private: /** @@ -75,6 +75,15 @@ private: void render(); bool game_running = false; + // For later if singletons are removed cant make them now because destructors are private. + // std::unique_ptr<RenderSystem> render_system; + // std::unique_ptr<SDLContext> sdl_context; + // std::unique_ptr<LoopTimer> loop_timer; + // std::unique_ptr<ScriptSystem> script_system; + // std::unique_ptr<ParticleSystem> particle_system; + // std::unique_ptr<PhysicsSystem> physics_system; + // std::unique_ptr<AnimatorSystem> animator_system; + // std::unique_ptr<CollisionSystem> collision_system; }; } // namespace crepe diff --git a/src/crepe/api/LoopTimer.cpp b/src/crepe/api/LoopTimer.cpp index 16d813f..039e35e 100644 --- a/src/crepe/api/LoopTimer.cpp +++ b/src/crepe/api/LoopTimer.cpp @@ -1,3 +1,4 @@ +#include <chrono> #include "../facade/SDLContext.h" #include "../util/log.h" @@ -6,64 +7,83 @@ using namespace crepe; -LoopTimer::LoopTimer() { dbg_trace(); } +LoopTimer::LoopTimer() { + dbg_trace(); +} LoopTimer & LoopTimer::get_instance() { - static LoopTimer instance; - return instance; + static LoopTimer instance; + return instance; } void LoopTimer::start() { - this->last_frame_time = SDLContext::get_instance().get_ticks(); - this->elapsed_time = 0; - this->elapsed_fixed_time = 0; - this->delta_time = 0; + this->last_frame_time = std::chrono::steady_clock::now(); + this->elapsed_time = std::chrono::milliseconds(0); + this->elapsed_fixed_time = std::chrono::milliseconds(0); + this->delta_time = std::chrono::milliseconds(0); } void LoopTimer::update() { - uint64_t current_frame_time = SDLContext::get_instance().get_ticks(); - this->delta_time = (current_frame_time - last_frame_time); - - if (this->delta_time > this->maximum_delta_time) { - this->delta_time = this->maximum_delta_time; - } - this->delta_time *= this->game_scale; - this->elapsed_time += this->delta_time; - this->last_frame_time = current_frame_time; + auto current_frame_time = std::chrono::steady_clock::now(); + // Convert to duration in seconds for delta time + this->delta_time = std::chrono::duration_cast<std::chrono::duration<double>>(current_frame_time - last_frame_time); + + if (this->delta_time > this->maximum_delta_time) { + this->delta_time = this->maximum_delta_time; + } + + this->delta_time *= this->game_scale; + this->elapsed_time += this->delta_time; + this->last_frame_time = current_frame_time; +} + +double LoopTimer::get_delta_time() const { + return this->delta_time.count(); +} + +double LoopTimer::get_current_time() const { + return this->elapsed_time.count(); } -double LoopTimer::get_delta_time() const { return this->delta_time; } -double LoopTimer::get_current_time() const { return this->elapsed_time; } void LoopTimer::advance_fixed_update() { - this->elapsed_fixed_time += this->fixed_delta_time; + this->elapsed_fixed_time += this->fixed_delta_time; } + double LoopTimer::get_fixed_delta_time() const { - return this->fixed_delta_time; + return this->fixed_delta_time.count(); } void LoopTimer::set_fps(int fps) { - this->fps = fps; - //! use fps to calculate frame_target_time in ms - this->frame_target_time = 1000.0 / this->fps; + this->fps = fps; + // target time per frame in seconds + this->frame_target_time = std::chrono::seconds(1) / fps; +} + +int LoopTimer::get_fps() const { + return this->fps; } -int LoopTimer::get_fps() const { return this->fps; } -void LoopTimer::set_game_scale(double value) { this->game_scale = value; } -double LoopTimer::get_game_scale() const { return this->game_scale; } +void LoopTimer::set_game_scale(double value) { + this->game_scale = value; +} +double LoopTimer::get_game_scale() const { + return this->game_scale; +} void LoopTimer::enforce_frame_rate() { - uint64_t current_frame_time = SDLContext::get_instance().get_ticks(); - double frame_duration = (current_frame_time - this->last_frame_time); + std::chrono::steady_clock::time_point current_frame_time = std::chrono::steady_clock::now(); + std::chrono::milliseconds frame_duration = std::chrono::duration_cast<std::chrono::milliseconds>(current_frame_time - this->last_frame_time); - if (frame_duration < this->frame_target_time) { - uint32_t delay_time - = static_cast<uint32_t>(this->frame_target_time - frame_duration); - SDLContext::get_instance().delay(delay_time); - } + if (frame_duration < this->frame_target_time) { + std::chrono::milliseconds delay_time = std::chrono::duration_cast<std::chrono::milliseconds>(this->frame_target_time - frame_duration); + if (delay_time.count() > 0) { + SDLContext::get_instance().delay(delay_time.count()); + } + } - this->last_frame_time = current_frame_time; + this->last_frame_time = current_frame_time; } double LoopTimer::get_lag() const { - return this->elapsed_time - this->elapsed_fixed_time; + return (this->elapsed_time - this->elapsed_fixed_time).count(); } diff --git a/src/crepe/api/LoopTimer.h b/src/crepe/api/LoopTimer.h index 5309d2f..ec48e4a 100644 --- a/src/crepe/api/LoopTimer.h +++ b/src/crepe/api/LoopTimer.h @@ -1,144 +1,145 @@ -#pragma once + #pragma once #include <cstdint> +#include <chrono> namespace crepe { class LoopTimer { public: - /** + /** * \brief Get the singleton instance of LoopTimer. * * \return A reference to the LoopTimer instance. */ - static LoopTimer & get_instance(); + static LoopTimer& get_instance(); - /** + /** * \brief Get the current delta time for the current frame. * - * \return Delta time in milliseconds since the last frame. + * \return Delta time in seconds since the last frame. */ - double get_delta_time() const; + double get_delta_time() const; - /** + /** * \brief Get the current game time. * * \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 milliseconds. + * \return Elapsed game time in seconds. */ - double get_current_time() const; + double get_current_time() const; - /** + /** * \brief Set the target frames per second (FPS). * * \param fps The desired frames rendered per second. */ - void set_fps(int fps); + void set_fps(int fps); - /** + /** * \brief Get the current frames per second (FPS). * * \return Current FPS. */ - int get_fps() const; + int get_fps() const; - /** + /** * \brief Get the current game scale. * * \return The current game scale, where 0 = paused, 1 = normal speed, and values > 1 speed up the game. */ - double get_game_scale() const; + double get_game_scale() const; - /** + /** * \brief Set the game scale. * * \param game_scale The desired game scale (0 = pause, 1 = normal speed, > 1 = speed up). */ - void set_game_scale(double game_scale); + void set_game_scale(double game_scale); private: - friend class LoopManager; + friend class LoopManager; - /** + /** * \brief Start the loop timer. * * Initializes the timer to begin tracking frame times. */ - void start(); + 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(); + void enforce_frame_rate(); - /** + /** * \brief Get the fixed delta time for consistent updates. * * Fixed delta time is used for operations that require uniform time steps, * such as physics calculations. * - * \return Fixed delta time in milliseconds. + * \return Fixed delta time in seconds. */ - double get_fixed_delta_time() const; + double get_fixed_delta_time() const; - /** + /** * \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 milliseconds. + * \return Accumulated lag in seconds. */ - double get_lag() const; + double get_lag() const; - /** + /** * \brief Construct a new LoopTimer object. * * Private constructor for singleton pattern to restrict instantiation * outside the class. */ - LoopTimer(); + LoopTimer(); - /** + /** * \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(); + void update(); - /** + /** * \brief Advance the game loop by a fixed update interval. * * This method progresses the game state by a consistent, fixed time step, * allowing for stable updates independent of frame rate fluctuations. */ - void advance_fixed_update(); + void advance_fixed_update(); private: - //! Current frames per second - int fps = 50; - //! Current game scale - double game_scale = 1; - //! Maximum delta time in milliseconds to avoid large jumps - double maximum_delta_time = 250; - //! Delta time for the current frame in milliseconds - double delta_time = 0; - //! Target time per frame in milliseconds - double frame_target_time = 1000.0 / fps; - //! Fixed delta time for fixed updates in milliseconds - double fixed_delta_time = 20; - //! Total elapsed game time in milliseconds - double elapsed_time = 0; - //! Total elapsed time for fixed updates in milliseconds - double elapsed_fixed_time = 0; - //! Time of the last frame in milliseconds - uint64_t last_frame_time = 0; + //! Current frames per second + int fps = 50; + //! Current game scale + double game_scale = 1; + //! Maximum delta time in seconds to avoid large jumps + std::chrono::duration<double> maximum_delta_time{0.25}; + //! Delta time for the current frame in seconds + std::chrono::duration<double> delta_time{0.0}; + //! Target time per frame in seconds + std::chrono::duration<double> frame_target_time = std::chrono::seconds(1) / fps; + //! Fixed delta time for fixed updates in seconds + std::chrono::duration<double> fixed_delta_time = std::chrono::seconds(1) / 50; + //! Total elapsed game time in seconds + std::chrono::duration<double> elapsed_time{0.0}; + //! Total elapsed time for fixed updates in seconds + std::chrono::duration<double> elapsed_fixed_time{0.0}; + //! Time of the last frame + std::chrono::steady_clock::time_point last_frame_time; }; } // namespace crepe diff --git a/src/crepe/facade/SDLContext.h b/src/crepe/facade/SDLContext.h index 90147e0..b51fdd5 100644 --- a/src/crepe/facade/SDLContext.h +++ b/src/crepe/facade/SDLContext.h @@ -58,6 +58,7 @@ private: private: //! Will only use get_ticks friend class AnimatorSystem; + //! Will use the funtions: get_ticks, delay friend class LoopTimer; /** * \brief Gets the current SDL ticks since the program started. |