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-rw-r--r--src/crepe/api/Button.cpp11
-rw-r--r--src/crepe/api/Button.h79
-rw-r--r--src/crepe/api/CMakeLists.txt4
-rw-r--r--src/crepe/api/Event.h22
-rw-r--r--src/crepe/api/KeyCodes.h21
-rw-r--r--src/crepe/api/LoopManager.cpp4
-rw-r--r--src/crepe/api/UIObject.cpp8
-rw-r--r--src/crepe/api/UIObject.h26
-rw-r--r--src/crepe/facade/SDLContext.cpp213
-rw-r--r--src/crepe/facade/SDLContext.h76
-rw-r--r--src/crepe/system/CMakeLists.txt2
-rw-r--r--src/crepe/system/InputSystem.cpp187
-rw-r--r--src/crepe/system/InputSystem.h85
13 files changed, 697 insertions, 41 deletions
diff --git a/src/crepe/api/Button.cpp b/src/crepe/api/Button.cpp
new file mode 100644
index 0000000..313ec4c
--- /dev/null
+++ b/src/crepe/api/Button.cpp
@@ -0,0 +1,11 @@
+#include "Button.h"
+
+namespace crepe {
+
+Button::Button(game_object_id_t id, const vec2& dimensions, const vec2& offset,
+ const std::function<void()>& on_click, bool is_toggle)
+ : UIObject(id, dimensions, offset),
+ is_toggle(is_toggle),
+ on_click(on_click) {}
+
+} // namespace crepe
diff --git a/src/crepe/api/Button.h b/src/crepe/api/Button.h
new file mode 100644
index 0000000..baee71f
--- /dev/null
+++ b/src/crepe/api/Button.h
@@ -0,0 +1,79 @@
+#pragma once
+
+#include <functional>
+
+#include "UIObject.h"
+
+namespace crepe {
+
+/**
+ * \brief Represents a clickable UI button, derived from the UiObject class.
+ *
+ */
+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
+ * \param is_toggle Optional flag to indicate if the button is a toggle button. Defaults to false.
+ * \param on_click callback function that will be invoked when the button is clicked.
+ */
+ Button(game_object_id_t id, const vec2 & dimensions, const vec2 & offset, const std::function<void()>& on_click,
+ bool is_toggle = false);
+
+ /**
+ * \brief Indicates if the button is a toggle button (can be pressed and released).
+ *
+ * A toggle button allows for a pressed/released state, whereas a regular button
+ * typically only has an on-click state.
+ */
+ bool is_toggle = false;
+
+ /**
+ * \brief The callback function to be executed when the button is clicked.
+ *
+ * This function is invoked whenever the button is clicked. It can be set to any
+ * function that matches the signature `void()`.
+ */
+ std::function<void()> on_click = nullptr;
+
+ /**
+ * \brief Callback function to be executed when the mouse enters the button's boundaries.
+ *
+ * This function is triggered when the mouse cursor moves over the button, allowing
+ * custom actions like visual effects, highlighting, or sound effects.
+ */
+ std::function<void()> on_mouse_enter = nullptr;
+
+ /**
+ * \brief Callback function to be executed when the mouse exits the button's boundaries.
+ *
+ * This function is triggered when the mouse cursor moves out of the button's area,
+ * allowing custom actions like resetting visual effects or playing exit-related effects.
+ */
+ std::function<void()> on_mouse_exit = nullptr;
+
+private:
+ //! friend relation for is_pressed and hover variables
+ friend class InputSystem;
+ /**
+ * \brief Indicates whether the toggle button is pressed
+ *
+ * This state indicates if the toggle button is pressed or not
+ */
+ bool is_pressed = false;
+
+ /**
+ * \brief Indicates whether the mouse is currently hovering over the button.
+ *
+ * This is set to true when the mouse is over the button and false otherwise.
+ */
+ bool hover = false;
+
+public:
+};
+
+} // namespace crepe
diff --git a/src/crepe/api/CMakeLists.txt b/src/crepe/api/CMakeLists.txt
index 7da9dca..ac8f301 100644
--- a/src/crepe/api/CMakeLists.txt
+++ b/src/crepe/api/CMakeLists.txt
@@ -20,6 +20,8 @@ target_sources(crepe PUBLIC
Asset.cpp
EventHandler.cpp
Script.cpp
+ Button.cpp
+ UIObject.cpp
)
target_sources(crepe PUBLIC FILE_SET HEADERS FILES
@@ -50,4 +52,6 @@ target_sources(crepe PUBLIC FILE_SET HEADERS FILES
LoopManager.h
LoopTimer.h
Asset.h
+ Button.h
+ UIObject.h
)
diff --git a/src/crepe/api/Event.h b/src/crepe/api/Event.h
index b267e3e..6298118 100644
--- a/src/crepe/api/Event.h
+++ b/src/crepe/api/Event.h
@@ -88,9 +88,31 @@ public:
//! Y-coordinate of the mouse position at the time of the event.
int mouse_y = 0;
+
+ // Movement since last event in x
+ int delta_x = 0;
+
+ // Movement since last event in y
+ int delta_y = 0;
};
/**
+ * \brief Event triggered when the mouse is moved.
+ */
+class MouseScrollEvent : public Event {
+public:
+ //! X-coordinate of the mouse position at the time of the event.
+ int mouse_x = 0;
+
+ //! Y-coordinate of the mouse position at the time of the event.
+ int mouse_y = 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 during a collision between objects.
*/
class CollisionEvent : public Event {};
diff --git a/src/crepe/api/KeyCodes.h b/src/crepe/api/KeyCodes.h
index 9e173e0..fcfc080 100644
--- a/src/crepe/api/KeyCodes.h
+++ b/src/crepe/api/KeyCodes.h
@@ -1,5 +1,5 @@
#pragma once
-
+namespace crepe {
//! Enumeration for mouse button inputs, including standard and extended buttons.
enum class MouseButton {
NONE = 0, //!< No mouse button input.
@@ -85,9 +85,9 @@ enum class Keycode {
PRINT_SCREEN = 283, //!< Print Screen key.
PAUSE = 284, //!< Pause key.
/**
- * \name Function keys (F1-F25).
- * \{
- */
+ * \name Function keys (F1-F25).
+ * \{
+ */
F1 = 290,
F2 = 291,
F3 = 292,
@@ -115,9 +115,9 @@ enum class Keycode {
F25 = 314,
/// \}
/**
- * \name Keypad digits and operators.
- * \{
- */
+ * \name Keypad digits and operators.
+ * \{
+ */
KP0 = 320,
KP1 = 321,
KP2 = 322,
@@ -137,9 +137,9 @@ enum class Keycode {
KP_EQUAL = 336,
/// \}
/**
- * \name Modifier keys.
- * \{
- */
+ * \name Modifier keys.
+ * \{
+ */
LEFT_SHIFT = 340,
LEFT_CONTROL = 341,
LEFT_ALT = 342,
@@ -151,3 +151,4 @@ enum class Keycode {
/// \}
MENU = 348, //!< Menu key.
};
+} // namespace crepe
diff --git a/src/crepe/api/LoopManager.cpp b/src/crepe/api/LoopManager.cpp
index 731cfb7..dc2d9e0 100644
--- a/src/crepe/api/LoopManager.cpp
+++ b/src/crepe/api/LoopManager.cpp
@@ -1,5 +1,6 @@
#include "../system/AnimatorSystem.h"
#include "../system/CollisionSystem.h"
+#include "../system/InputSystem.h"
#include "../system/ParticleSystem.h"
#include "../system/PhysicsSystem.h"
#include "../system/RenderSystem.h"
@@ -20,9 +21,10 @@ LoopManager::LoopManager() {
this->load_system<PhysicsSystem>();
this->load_system<RenderSystem>();
this->load_system<ScriptSystem>();
+ this->load_system<InputSystem>();
}
-void LoopManager::process_input() { this->sdl_context.handle_events(this->game_running); }
+void LoopManager::process_input() { this->get_system<InputSystem>().update(); }
void LoopManager::start() {
this->setup();
diff --git a/src/crepe/api/UIObject.cpp b/src/crepe/api/UIObject.cpp
new file mode 100644
index 0000000..784328a
--- /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..614794d
--- /dev/null
+++ b/src/crepe/api/UIObject.h
@@ -0,0 +1,26 @@
+#pragma once
+
+#include "../Component.h"
+
+namespace crepe {
+
+/**
+ * @class UiObject
+ * \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/facade/SDLContext.cpp b/src/crepe/facade/SDLContext.cpp
index e8be7ca..aba7ce7 100644
--- a/src/crepe/facade/SDLContext.cpp
+++ b/src/crepe/facade/SDLContext.cpp
@@ -6,6 +6,7 @@
#include <SDL2/SDL_render.h>
#include <SDL2/SDL_surface.h>
#include <SDL2/SDL_video.h>
+#include <array>
#include <cmath>
#include <cstddef>
#include <cstdint>
@@ -16,6 +17,7 @@
#include "../api/Camera.h"
#include "../api/Config.h"
+#include "../api/EventManager.h"
#include "../api/Sprite.h"
#include "../api/Texture.h"
#include "../util/Log.h"
@@ -76,25 +78,141 @@ SDLContext::~SDLContext() {
IMG_Quit();
SDL_Quit();
}
-void SDLContext::handle_events(bool & running) {
- //TODO: wouter i need events
- /*
- SDL_Event event;
- SDL_PollEvent(&event);
- switch (event.type) {
- case SDL_QUIT:
- running = false;
- break;
- case SDL_KEYDOWN:
- triggerEvent(KeyPressedEvent(getCustomKey(event.key.keysym.sym)));
- break;
- case SDL_MOUSEBUTTONDOWN:
- int x, y;
- SDL_GetMouseState(&x, &y);
- triggerEvent(MousePressedEvent(x, y));
- break;
+
+Keycode SDLContext::sdl_to_keycode(SDL_Keycode sdl_key) {
+ static const std::array<Keycode, SDL_NUM_SCANCODES> LOOKUP_TABLE = [] {
+ std::array<Keycode, SDL_NUM_SCANCODES> table{};
+ table.fill(Keycode::NONE);
+
+ table[SDL_SCANCODE_SPACE] = Keycode::SPACE;
+ table[SDL_SCANCODE_APOSTROPHE] = Keycode::APOSTROPHE;
+ table[SDL_SCANCODE_COMMA] = Keycode::COMMA;
+ table[SDL_SCANCODE_MINUS] = Keycode::MINUS;
+ table[SDL_SCANCODE_PERIOD] = Keycode::PERIOD;
+ table[SDL_SCANCODE_SLASH] = Keycode::SLASH;
+ table[SDL_SCANCODE_0] = Keycode::D0;
+ table[SDL_SCANCODE_1] = Keycode::D1;
+ table[SDL_SCANCODE_2] = Keycode::D2;
+ table[SDL_SCANCODE_3] = Keycode::D3;
+ table[SDL_SCANCODE_4] = Keycode::D4;
+ table[SDL_SCANCODE_5] = Keycode::D5;
+ table[SDL_SCANCODE_6] = Keycode::D6;
+ table[SDL_SCANCODE_7] = Keycode::D7;
+ table[SDL_SCANCODE_8] = Keycode::D8;
+ table[SDL_SCANCODE_9] = Keycode::D9;
+ table[SDL_SCANCODE_SEMICOLON] = Keycode::SEMICOLON;
+ table[SDL_SCANCODE_EQUALS] = Keycode::EQUAL;
+ table[SDL_SCANCODE_A] = Keycode::A;
+ table[SDL_SCANCODE_B] = Keycode::B;
+ table[SDL_SCANCODE_C] = Keycode::C;
+ table[SDL_SCANCODE_D] = Keycode::D;
+ table[SDL_SCANCODE_E] = Keycode::E;
+ table[SDL_SCANCODE_F] = Keycode::F;
+ table[SDL_SCANCODE_G] = Keycode::G;
+ table[SDL_SCANCODE_H] = Keycode::H;
+ table[SDL_SCANCODE_I] = Keycode::I;
+ table[SDL_SCANCODE_J] = Keycode::J;
+ table[SDL_SCANCODE_K] = Keycode::K;
+ table[SDL_SCANCODE_L] = Keycode::L;
+ table[SDL_SCANCODE_M] = Keycode::M;
+ table[SDL_SCANCODE_N] = Keycode::N;
+ table[SDL_SCANCODE_O] = Keycode::O;
+ table[SDL_SCANCODE_P] = Keycode::P;
+ table[SDL_SCANCODE_Q] = Keycode::Q;
+ table[SDL_SCANCODE_R] = Keycode::R;
+ table[SDL_SCANCODE_S] = Keycode::S;
+ table[SDL_SCANCODE_T] = Keycode::T;
+ table[SDL_SCANCODE_U] = Keycode::U;
+ table[SDL_SCANCODE_V] = Keycode::V;
+ table[SDL_SCANCODE_W] = Keycode::W;
+ table[SDL_SCANCODE_X] = Keycode::X;
+ table[SDL_SCANCODE_Y] = Keycode::Y;
+ table[SDL_SCANCODE_Z] = Keycode::Z;
+ table[SDL_SCANCODE_LEFTBRACKET] = Keycode::LEFT_BRACKET;
+ table[SDL_SCANCODE_BACKSLASH] = Keycode::BACKSLASH;
+ table[SDL_SCANCODE_RIGHTBRACKET] = Keycode::RIGHT_BRACKET;
+ table[SDL_SCANCODE_GRAVE] = Keycode::GRAVE_ACCENT;
+ table[SDL_SCANCODE_ESCAPE] = Keycode::ESCAPE;
+ table[SDL_SCANCODE_RETURN] = Keycode::ENTER;
+ table[SDL_SCANCODE_TAB] = Keycode::TAB;
+ table[SDL_SCANCODE_BACKSPACE] = Keycode::BACKSPACE;
+ table[SDL_SCANCODE_INSERT] = Keycode::INSERT;
+ table[SDL_SCANCODE_DELETE] = Keycode::DELETE;
+ table[SDL_SCANCODE_RIGHT] = Keycode::RIGHT;
+ table[SDL_SCANCODE_LEFT] = Keycode::LEFT;
+ table[SDL_SCANCODE_DOWN] = Keycode::DOWN;
+ table[SDL_SCANCODE_UP] = Keycode::UP;
+ table[SDL_SCANCODE_PAGEUP] = Keycode::PAGE_UP;
+ table[SDL_SCANCODE_PAGEDOWN] = Keycode::PAGE_DOWN;
+ table[SDL_SCANCODE_HOME] = Keycode::HOME;
+ table[SDL_SCANCODE_END] = Keycode::END;
+ table[SDL_SCANCODE_CAPSLOCK] = Keycode::CAPS_LOCK;
+ table[SDL_SCANCODE_SCROLLLOCK] = Keycode::SCROLL_LOCK;
+ table[SDL_SCANCODE_NUMLOCKCLEAR] = Keycode::NUM_LOCK;
+ table[SDL_SCANCODE_PRINTSCREEN] = Keycode::PRINT_SCREEN;
+ table[SDL_SCANCODE_PAUSE] = Keycode::PAUSE;
+ table[SDL_SCANCODE_F1] = Keycode::F1;
+ table[SDL_SCANCODE_F2] = Keycode::F2;
+ table[SDL_SCANCODE_F3] = Keycode::F3;
+ table[SDL_SCANCODE_F4] = Keycode::F4;
+ table[SDL_SCANCODE_F5] = Keycode::F5;
+ table[SDL_SCANCODE_F6] = Keycode::F6;
+ table[SDL_SCANCODE_F7] = Keycode::F7;
+ table[SDL_SCANCODE_F8] = Keycode::F8;
+ table[SDL_SCANCODE_F9] = Keycode::F9;
+ table[SDL_SCANCODE_F10] = Keycode::F10;
+ table[SDL_SCANCODE_F11] = Keycode::F11;
+ table[SDL_SCANCODE_F12] = Keycode::F12;
+ table[SDL_SCANCODE_KP_0] = Keycode::KP0;
+ table[SDL_SCANCODE_KP_1] = Keycode::KP1;
+ table[SDL_SCANCODE_KP_2] = Keycode::KP2;
+ table[SDL_SCANCODE_KP_3] = Keycode::KP3;
+ table[SDL_SCANCODE_KP_4] = Keycode::KP4;
+ table[SDL_SCANCODE_KP_5] = Keycode::KP5;
+ table[SDL_SCANCODE_KP_6] = Keycode::KP6;
+ table[SDL_SCANCODE_KP_7] = Keycode::KP7;
+ table[SDL_SCANCODE_KP_8] = Keycode::KP8;
+ table[SDL_SCANCODE_KP_9] = Keycode::KP9;
+ table[SDL_SCANCODE_LSHIFT] = Keycode::LEFT_SHIFT;
+ table[SDL_SCANCODE_LCTRL] = Keycode::LEFT_CONTROL;
+ table[SDL_SCANCODE_LALT] = Keycode::LEFT_ALT;
+ table[SDL_SCANCODE_LGUI] = Keycode::LEFT_SUPER;
+ table[SDL_SCANCODE_RSHIFT] = Keycode::RIGHT_SHIFT;
+ table[SDL_SCANCODE_RCTRL] = Keycode::RIGHT_CONTROL;
+ table[SDL_SCANCODE_RALT] = Keycode::RIGHT_ALT;
+ table[SDL_SCANCODE_RGUI] = Keycode::RIGHT_SUPER;
+ table[SDL_SCANCODE_MENU] = Keycode::MENU;
+
+ return table;
+ }();
+
+ if (sdl_key < 0 || sdl_key >= SDL_NUM_SCANCODES) {
+ return Keycode::NONE;
}
- */
+
+ return LOOKUP_TABLE[sdl_key];
+}
+
+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() {
@@ -224,6 +342,65 @@ ivec2 SDLContext::get_size(const Texture & ctx) {
void SDLContext::delay(int ms) const { SDL_Delay(ms); }
+std::vector<SDLContext::EventData> SDLContext::get_events() {
+ std::vector<SDLContext::EventData> event_list;
+ SDL_Event event;
+ while (SDL_PollEvent(&event)) {
+ switch (event.type) {
+ case SDL_QUIT:
+ event_list.push_back(EventData{
+ .event_type = SDLContext::EventType::SHUTDOWN,
+ });
+ break;
+ case SDL_KEYDOWN:
+ event_list.push_back(EventData{
+ .event_type = SDLContext::EventType::KEYDOWN,
+ .key = sdl_to_keycode(event.key.keysym.scancode),
+ .key_repeat = (event.key.repeat != 0),
+ });
+ break;
+ case SDL_KEYUP:
+ event_list.push_back(EventData{
+ .event_type = SDLContext::EventType::KEYUP,
+ .key = sdl_to_keycode(event.key.keysym.scancode),
+ });
+ break;
+ case SDL_MOUSEBUTTONDOWN:
+ event_list.push_back(EventData{
+ .event_type = SDLContext::EventType::MOUSEDOWN,
+ .mouse_button = sdl_to_mousebutton(event.button.button),
+ .mouse_position = {event.button.x, event.button.y},
+ });
+ break;
+ case SDL_MOUSEBUTTONUP: {
+ int x, y;
+ SDL_GetMouseState(&x, &y);
+ event_list.push_back(EventData{
+ .event_type = SDLContext::EventType::MOUSEUP,
+ .mouse_button = sdl_to_mousebutton(event.button.button),
+ .mouse_position = {event.button.x, event.button.y},
+ });
+ } break;
+
+ case SDL_MOUSEMOTION: {
+ event_list.push_back(
+ EventData{.event_type = SDLContext::EventType::MOUSEMOVE,
+ .mouse_position = {event.motion.x, event.motion.y},
+ .rel_mouse_move = {event.motion.xrel, event.motion.yrel}});
+ } break;
+
+ case SDL_MOUSEWHEEL: {
+ event_list.push_back(EventData{
+ .event_type = SDLContext::EventType::MOUSEWHEEL,
+ .mouse_position = {event.motion.x, event.motion.y},
+ .scroll_direction = event.wheel.direction,
+ .scroll_delta = event.wheel.preciseY,
+ });
+ } break;
+ }
+ }
+ return event_list;
+}
void SDLContext::set_color_texture(const Texture & texture, const Color & color) {
SDL_SetTextureColorMod(texture.texture.get(), color.r, color.g, color.b);
SDL_SetTextureAlphaMod(texture.texture.get(), color.a);
diff --git a/src/crepe/facade/SDLContext.h b/src/crepe/facade/SDLContext.h
index e49ca78..bd0427a 100644
--- a/src/crepe/facade/SDLContext.h
+++ b/src/crepe/facade/SDLContext.h
@@ -1,5 +1,6 @@
#pragma once
+#include <SDL2/SDL.h>
#include <SDL2/SDL_keycode.h>
#include <SDL2/SDL_rect.h>
#include <SDL2/SDL_render.h>
@@ -8,20 +9,21 @@
#include <functional>
#include <memory>
#include <string>
+#include <utility>
-#include "../api/Camera.h"
-#include "../api/Sprite.h"
-
+#include "api/Camera.h"
#include "api/Color.h"
+#include "api/Event.h"
+#include "api/KeyCodes.h"
+#include "api/Sprite.h"
#include "api/Texture.h"
+#include "api/Transform.h"
#include "types.h"
namespace crepe {
-// TODO: SDL_Keycode is defined in a header not distributed with crepe, which means this
-// typedef is unusable when crepe is packaged. Wouter will fix this later.
-typedef SDL_Keycode CREPE_KEYCODES;
-
+class LoopManager;
+class InputSystem;
/**
* \class SDLContext
* \brief Facade for the SDL library
@@ -41,6 +43,29 @@ public:
};
public:
+ //! EventType enum for passing eventType
+ enum EventType {
+ NONE = 0,
+ MOUSEDOWN,
+ MOUSEUP,
+ MOUSEMOVE,
+ MOUSEWHEEL,
+ KEYUP,
+ KEYDOWN,
+ SHUTDOWN,
+
+ };
+ //! EventData struct for passing event data from facade
+ struct EventData {
+ SDLContext::EventType event_type = SDLContext::EventType::NONE;
+ Keycode key = Keycode::NONE;
+ bool key_repeat = false;
+ MouseButton mouse_button = MouseButton::NONE;
+ std::pair<int, int> mouse_position = {-1, -1};
+ int scroll_direction = -1;
+ float scroll_delta = INFINITY;
+ std::pair<int, int> rel_mouse_move = {-1, -1};
+ };
/**
* \brief Gets the singleton instance of SDLContext.
* \return Reference to the SDLContext instance.
@@ -53,13 +78,40 @@ public:
SDLContext & operator=(SDLContext &&) = delete;
private:
- //! will only use handle_events
- friend class LoopManager;
+ //! will only use get_events
+ friend class InputSystem;
+ /**
+ * \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<SDLContext::EventData> get_events();
+
+ /**
+ * \brief Converts an SDL key code to the custom Keycode type.
+ *
+ * This method maps an SDL key code to the corresponding `Keycode` enum value,
+ * which is used internally by the system to identify the keys.
+ *
+ * \param sdl_key The SDL key code to convert.
+ * \return The corresponding `Keycode` value or `Keycode::NONE` if the key is unrecognized.
+ */
+ Keycode sdl_to_keycode(SDL_Keycode sdl_key);
+
/**
- * \brief Handles SDL events such as window close and input.
- * \param running Reference to a boolean flag that controls the main loop.
+ * \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
*/
- void handle_events(bool & running);
+ MouseButton sdl_to_mousebutton(Uint8 sdl_button);
private:
//! Will only use get_ticks
diff --git a/src/crepe/system/CMakeLists.txt b/src/crepe/system/CMakeLists.txt
index d658b25..95f6e33 100644
--- a/src/crepe/system/CMakeLists.txt
+++ b/src/crepe/system/CMakeLists.txt
@@ -6,6 +6,7 @@ target_sources(crepe PUBLIC
CollisionSystem.cpp
RenderSystem.cpp
AnimatorSystem.cpp
+ InputSystem.cpp
)
target_sources(crepe PUBLIC FILE_SET HEADERS FILES
@@ -15,4 +16,5 @@ target_sources(crepe PUBLIC FILE_SET HEADERS FILES
CollisionSystem.h
RenderSystem.h
AnimatorSystem.h
+ InputSystem.h
)
diff --git a/src/crepe/system/InputSystem.cpp b/src/crepe/system/InputSystem.cpp
new file mode 100644
index 0000000..afd71fe
--- /dev/null
+++ b/src/crepe/system/InputSystem.cpp
@@ -0,0 +1,187 @@
+#include "../ComponentManager.h"
+#include "../api/Button.h"
+#include "../api/EventManager.h"
+
+#include "InputSystem.h"
+
+using namespace crepe;
+
+void InputSystem::update() {
+ ComponentManager & mgr = this->component_manager;
+ EventManager & event_mgr = EventManager::get_instance();
+ std::vector<SDLContext::EventData> event_list = SDLContext::get_instance().get_events();
+ RefVector<Button> buttons = mgr.get_components_by_type<Button>();
+ 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();
+ int camera_origin_x
+ = cam_transform.position.x + current_cam.offset.x - (current_cam.viewport_size.x / 2);
+ int camera_origin_y
+ = cam_transform.position.y + current_cam.offset.y - (current_cam.viewport_size.y / 2);
+
+ for (const SDLContext::EventData & event : event_list) {
+ int world_mouse_x = event.mouse_position.first + camera_origin_x;
+ int world_mouse_y = event.mouse_position.second + camera_origin_y;
+ // check if the mouse is within the viewport
+ bool mouse_in_viewport
+ = !(world_mouse_x < camera_origin_x
+ || world_mouse_x > camera_origin_x + current_cam.viewport_size.x
+ || world_mouse_y < camera_origin_y
+ || world_mouse_y > camera_origin_y + current_cam.viewport_size.y);
+
+ switch (event.event_type) {
+ case SDLContext::EventType::KEYDOWN:
+ event_mgr.queue_event<KeyPressEvent>(KeyPressEvent{
+ .repeat = event.key_repeat,
+ .key = event.key,
+ });
+ break;
+ case SDLContext::EventType::KEYUP:
+ event_mgr.queue_event<KeyReleaseEvent>(KeyReleaseEvent{
+ .key = event.key,
+ });
+ break;
+ case SDLContext::EventType::MOUSEDOWN:
+ if (!mouse_in_viewport) {
+ break;
+ }
+ event_mgr.queue_event<MousePressEvent>(MousePressEvent{
+ .mouse_x = world_mouse_x,
+ .mouse_y = world_mouse_y,
+ .button = event.mouse_button,
+ });
+ this->last_mouse_down_position = {world_mouse_x, world_mouse_y};
+ this->last_mouse_button = event.mouse_button;
+ break;
+ case SDLContext::EventType::MOUSEUP: {
+ if (!mouse_in_viewport) {
+ break;
+ }
+ event_mgr.queue_event<MouseReleaseEvent>(MouseReleaseEvent{
+ .mouse_x = world_mouse_x,
+ .mouse_y = world_mouse_y,
+ .button = event.mouse_button,
+ });
+ //check if its a click by checking the last button down
+ int delta_x = world_mouse_x - this->last_mouse_down_position.x;
+ int delta_y = world_mouse_y - this->last_mouse_down_position.y;
+
+ if (this->last_mouse_button == event.mouse_button
+ && std::abs(delta_x) <= click_tolerance
+ && std::abs(delta_y) <= click_tolerance) {
+ event_mgr.queue_event<MouseClickEvent>(MouseClickEvent{
+ .mouse_x = world_mouse_x,
+ .mouse_y = world_mouse_y,
+ .button = event.mouse_button,
+ });
+
+ this->handle_click(event.mouse_button, world_mouse_x, world_mouse_y);
+ }
+ } break;
+ case SDLContext::EventType::MOUSEMOVE:
+ if (!mouse_in_viewport) {
+ break;
+ }
+ event_mgr.queue_event<MouseMoveEvent>(MouseMoveEvent{
+ .mouse_x = world_mouse_x,
+ .mouse_y = world_mouse_y,
+ .delta_x = event.rel_mouse_move.first,
+ .delta_y = event.rel_mouse_move.second,
+ });
+ this->handle_move(event, world_mouse_x, world_mouse_y);
+ break;
+ case SDLContext::EventType::MOUSEWHEEL:
+ event_mgr.queue_event<MouseScrollEvent>(MouseScrollEvent{
+ .mouse_x = world_mouse_x,
+ .mouse_y = world_mouse_y,
+ .scroll_direction = event.scroll_direction,
+ .scroll_delta = event.scroll_delta,
+ });
+ break;
+ case SDLContext::EventType::SHUTDOWN:
+ event_mgr.queue_event<ShutDownEvent>(ShutDownEvent{});
+ break;
+ default:
+ break;
+ }
+ }
+}
+void InputSystem::handle_move(const SDLContext::EventData & event_data,
+ const int world_mouse_x, const int world_mouse_y) {
+ ComponentManager & mgr = this->component_manager;
+
+ RefVector<Button> buttons = mgr.get_components_by_type<Button>();
+
+ for (Button & button : buttons) {
+ RefVector<Transform> transform_vec
+ = mgr.get_components_by_id<Transform>(button.game_object_id);
+ Transform & transform(transform_vec.front().get());
+
+ bool was_hovering = button.hover;
+ if (button.active
+ && this->is_mouse_inside_button(world_mouse_x, world_mouse_y, button, transform)) {
+ button.hover = true;
+ if (!was_hovering && button.on_mouse_enter) {
+ button.on_mouse_enter();
+ }
+ } else {
+ button.hover = false;
+ // Trigger the on_exit callback if the hover state just changed to false
+ if (was_hovering && button.on_mouse_exit) {
+ button.on_mouse_exit();
+ }
+ }
+ }
+}
+
+void InputSystem::handle_click(const MouseButton & mouse_button, const int world_mouse_x,
+ const int world_mouse_y) {
+ ComponentManager & mgr = this->component_manager;
+
+ RefVector<Button> buttons = mgr.get_components_by_type<Button>();
+
+ for (Button & button : buttons) {
+ RefVector<Transform> transform_vec
+ = mgr.get_components_by_id<Transform>(button.game_object_id);
+ Transform & transform = transform_vec.front().get();
+
+ if (button.active
+ && this->is_mouse_inside_button(world_mouse_x, world_mouse_y, button, transform)) {
+ this->handle_button_press(button);
+ }
+ }
+}
+
+bool InputSystem::is_mouse_inside_button(const int mouse_x, const int mouse_y,
+ 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_x >= actual_x - half_width && mouse_x <= actual_x + half_width
+ && mouse_y >= actual_y - half_height && mouse_y <= actual_y + half_height;
+}
+
+void InputSystem::handle_button_press(Button & button) {
+ if (button.is_toggle) {
+ if (!button.is_pressed && button.on_click) {
+ button.on_click();
+ }
+ button.is_pressed = !button.is_pressed;
+ } else if (button.on_click) {
+ button.on_click();
+ }
+}
diff --git a/src/crepe/system/InputSystem.h b/src/crepe/system/InputSystem.h
new file mode 100644
index 0000000..eafeb91
--- /dev/null
+++ b/src/crepe/system/InputSystem.h
@@ -0,0 +1,85 @@
+#pragma once
+
+#include "../facade/SDLContext.h"
+#include "../types.h"
+#include "../util/OptionalRef.h"
+
+#include "System.h"
+
+namespace crepe {
+
+class Camera;
+class Button;
+class Transform;
+
+/**
+ * \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 update() override;
+
+private:
+ //! Stores the last position of the mouse when the button was pressed.
+ ivec2 last_mouse_down_position{std::numeric_limits<int>::max(),
+ std::numeric_limits<int>::max()};
+
+ //! Stores the last mouse button pressed.
+ MouseButton last_mouse_button = MouseButton::NONE;
+
+ //! The maximum allowable distance between mouse down and mouse up to register as a click.
+ const int click_tolerance = 5;
+
+ /**
+ * \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 int world_mouse_x,
+ const int world_mouse_y);
+
+ /**
+ * \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 SDLContext::EventData & event_data, const int world_mouse_x,
+ const int world_mouse_y);
+
+ /**
+ * \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 int world_mouse_x, const int world_mouse_y,
+ 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