9 files changed, 475 insertions, 0 deletions

diff --git a/mwe/events/include/customTypes.h b/mwe/events/include/customTypes.h
new file mode 100644
index 0000000..a5d8dc9
--- /dev/null
+++ b/mwe/events/include/customTypes.h
@@ -0,0 +1,38 @@
+#pragma once
+#include <cmath>
+struct Vector2 {
+	float x; // X component of the vector
+	float y; // Y component of the vector
+
+	// Vector subtraction
+	Vector2 operator-(const Vector2 & other) const {
+		return {x - other.x, y - other.y};
+	}
+
+	// Vector addition
+	Vector2 operator+(const Vector2 & other) const {
+		return {x + other.x, y + other.y};
+	}
+
+	// Scalar multiplication
+	Vector2 operator*(float scalar) const { return {x * scalar, y * scalar}; }
+
+	// Normalize the vector
+	Vector2 normalize() const {
+		float length = std::sqrt(x * x + y * y);
+		if (length == 0) return {0, 0}; // Prevent division by zero
+		return {x / length, y / length};
+	}
+};
+struct Collision {
+	int objectIdA; // ID of the first object
+	int objectIdB; // ID of the second object
+	Vector2 contactPoint; // Point of contact
+	Vector2 contactNormal; // Normal vector at the contact point
+
+	// Constructor to initialize a Collision
+	Collision(int idA, int idB, const Vector2 & point, const Vector2 & normal,
+			  float depth)
+		: objectIdA(idA), objectIdB(idB), contactPoint(point),
+		  contactNormal(normal) {}
+};
diff --git a/mwe/events/include/event.h b/mwe/events/include/event.h
new file mode 100644
index 0000000..730ee4b
--- /dev/null
+++ b/mwe/events/include/event.h
@@ -0,0 +1,103 @@
+#pragma once
+#include "customTypes.h"
+#include "keyCodes.h"
+#include <cstdint>
+#include <iostream>
+#include <string>
+#include <unordered_map>
+#include <variant>
+
+class UUIDGenerator {
+public:
+	static std::uint32_t getUniqueID() {
+		static std::uint32_t id = 0;
+		return ++id;
+	}
+};
+#define REGISTER_EVENT_TYPE(ClassName) \
+\
+public: \
+	static std::uint32_t getStaticEventType() { \
+		static std::uint32_t typeID = UUIDGenerator::getUniqueID(); \
+		return typeID; \
+	} \
+	virtual std::uint32_t getEventType() const override { \
+		return getStaticEventType(); \
+	}
+class Event {
+public:
+	Event(std::string eventType);
+	virtual ~Event() = default;
+	virtual std::uint32_t getEventType() const = 0;
+	virtual std::string toString() const;
+	void addArgument(const std::string & key,
+					 const std::variant<int, std::string, float> & value);
+
+	std::variant<int, std::string, float>
+	getArgument(const std::string & key) const;
+
+	std::string getType() const;
+	bool getHandled() const;
+	void markHandled();
+
+private:
+	std::unordered_map<std::string, std::variant<int, std::string, float>>
+		eventData;
+	bool isHandled = false;
+};
+
+// KeyPressedEvent class
+class KeyPressedEvent : public Event {
+public:
+	KeyPressedEvent(int keyCode);
+
+	REGISTER_EVENT_TYPE("KeyPressedEvent");
+
+	Keycode getKeyCode() const;
+	int getRepeatCount() const;
+
+private:
+	Keycode keycode;
+
+public:
+	Keycode key = 0;
+	int repeatCount = 0;
+};
+
+// KeyReleasedEvent class
+class KeyReleasedEvent : public Event {
+public:
+	KeyReleasedEvent(int keyCode);
+
+	REGISTER_EVENT_TYPE(KeyReleasedEvent);
+
+	Keycode getKeyCode() const;
+
+private:
+	Keycode key = 0;
+};
+
+// MousePressedEvent class
+class MousePressedEvent : public Event {
+public:
+	MousePressedEvent(int mouseX, int mouseY);
+
+	REGISTER_EVENT_TYPE(MousePressedEvent)
+
+	std::pair<int, int> getMousePosition() const;
+
+private:
+	int mouseX = 0;
+	int mouseY = 0;
+};
+class CollisionEvent : public Event {
+public:
+	CollisionEvent(Collision);
+
+	REGISTER_EVENT_TYPE(CollisionEvent)
+
+	Collision getCollisionData() const;
+
+private:
+	Collision collisionData;
+};
diff --git a/mwe/events/include/eventHandler.h b/mwe/events/include/eventHandler.h
new file mode 100644
index 0000000..7414801
--- /dev/null
+++ b/mwe/events/include/eventHandler.h
@@ -0,0 +1,46 @@
+#pragma once
+
+#include "event.h"
+
+#include <functional>
+#include <iostream>
+template <typename EventType>
+using EventHandler = std::function<void(const EventType & e)>;
+
+class IEventHandlerWrapper {
+public:
+	virtual ~IEventHandlerWrapper() = default;
+
+	void exec(const Event & e);
+
+	virtual std::string getType() const = 0;
+	virtual bool isDestroyOnSuccess() const = 0;
+
+private:
+	virtual void call(const Event & e) = 0;
+};
+
+template <typename EventType>
+class EventHandlerWrapper : public IEventHandlerWrapper {
+public:
+	explicit EventHandlerWrapper(const EventHandler<EventType> & handler,
+								 const bool destroyOnSuccess = false)
+		: m_handler(handler), m_handlerType(m_handler.target_type().name()),
+		  m_destroyOnSuccess(destroyOnSuccess) {
+		// std::cout << m_handlerType << std::endl;
+	}
+
+private:
+	void call(const Event & e) override {
+		if (e.getEventType() == EventType::getStaticEventType()) {
+			m_handler(static_cast<const EventType &>(e));
+		}
+	}
+
+	std::string getType() const override { return m_handlerType; }
+	bool isDestroyOnSuccess() const { return m_destroyOnSuccess; }
+
+	EventHandler<EventType> m_handler;
+	const std::string m_handlerType;
+	bool m_destroyOnSuccess{false};
+};
diff --git a/mwe/events/include/eventManager.h b/mwe/events/include/eventManager.h
new file mode 100644
index 0000000..508a5e2
--- /dev/null
+++ b/mwe/events/include/eventManager.h
@@ -0,0 +1,66 @@
+#pragma once
+#include "event.h"
+#include "eventHandler.h"
+#include "keyCodes.h"
+#include <memory>
+#include <unordered_map>
+#include <vector>
+// using EventType = std::uint32_t;
+// using EventId = std::uint64_t;
+
+class EventManager {
+public:
+	EventManager(const EventManager &) = delete;
+	const EventManager & operator=(const EventManager &) = delete;
+	static EventManager & getInstance() {
+		static EventManager instance;
+		return instance;
+	}
+
+	void shutdown();
+	void subscribe(int eventType,
+				   std::unique_ptr<IEventHandlerWrapper> && handler,
+				   int eventId);
+	void unsubscribe(int eventType, const std::string & handlerName,
+					 int eventId);
+	void triggerEvent(const Event & event_, int eventId);
+	void queueEvent(std::unique_ptr<Event> && event_, int eventId);
+	void dispatchEvents();
+
+private:
+	EventManager() = default;
+	std::vector<std::pair<std::unique_ptr<Event>, int>> eventsQueue;
+	std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>
+		subscribers;
+	std::unordered_map<
+		int, std::unordered_map<
+				 int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>>
+		subscribersByEventId;
+};
+
+template <typename EventType>
+inline void subscribe(const EventHandler<EventType> & callback, int eventId = 0,
+					  const bool unsubscribeOnSuccess = false) {
+	std::unique_ptr<IEventHandlerWrapper> handler
+		= std::make_unique<EventHandlerWrapper<EventType>>(
+			callback, unsubscribeOnSuccess);
+	EventManager::getInstance().subscribe(EventType::getStaticEventType(),
+										  std::move(handler), eventId);
+}
+
+template <typename EventType>
+inline void unsubscribe(const EventHandler<EventType> & callback,
+						int eventId = 0) {
+	const std::string handlerName = callback.target_type().name();
+	EventManager::getInstance().unsubscribe(EventType::getStaticEventType(),
+											handlerName, eventId);
+}
+
+inline void triggerEvent(const Event & triggeredEvent, int eventId = 0) {
+	EventManager::getInstance().triggerEvent(triggeredEvent, eventId);
+}
+
+inline void queueEvent(std::unique_ptr<Event> && queuedEvent, int eventId = 0) {
+	EventManager::getInstance().queueEvent(
+		std::forward<std::unique_ptr<Event>>(queuedEvent), eventId);
+}
diff --git a/mwe/events/include/keyCodes.h b/mwe/events/include/keyCodes.h
new file mode 100644
index 0000000..0879efc
--- /dev/null
+++ b/mwe/events/include/keyCodes.h
@@ -0,0 +1,143 @@
+#pragma once
+#include <SDL2/SDL.h>
+#include <cstdint>
+#include <unordered_map>
+using Keycode = uint16_t;
+enum : Keycode {
+	// From glfw3.h
+	Space = 32,
+	Apostrophe = 39, /* ' */
+	Comma = 44, /* , */
+	Minus = 45, /* - */
+	Period = 46, /* . */
+	Slash = 47, /* / */
+
+	D0 = 48, /* 0 */
+	D1 = 49, /* 1 */
+	D2 = 50, /* 2 */
+	D3 = 51, /* 3 */
+	D4 = 52, /* 4 */
+	D5 = 53, /* 5 */
+	D6 = 54, /* 6 */
+	D7 = 55, /* 7 */
+	D8 = 56, /* 8 */
+	D9 = 57, /* 9 */
+
+	Semicolon = 59, /* ; */
+	Equal = 61, /* = */
+
+	A = 65,
+	B = 66,
+	C = 67,
+	D = 68,
+	E = 69,
+	F = 70,
+	G = 71,
+	H = 72,
+	I = 73,
+	J = 74,
+	K = 75,
+	L = 76,
+	M = 77,
+	N = 78,
+	O = 79,
+	P = 80,
+	Q = 81,
+	R = 82,
+	S = 83,
+	T = 84,
+	U = 85,
+	V = 86,
+	W = 87,
+	X = 88,
+	Y = 89,
+	Z = 90,
+
+	LeftBracket = 91, /* [ */
+	Backslash = 92, /* \ */
+	RightBracket = 93, /* ] */
+	GraveAccent = 96, /* ` */
+
+	World1 = 161, /* non-US #1 */
+	World2 = 162, /* non-US #2 */
+
+	/* Function keys */
+	Escape = 256,
+	Enter = 257,
+	Tab = 258,
+	Backspace = 259,
+	Insert = 260,
+	Delete = 261,
+	Right = 262,
+	Left = 263,
+	Down = 264,
+	Up = 265,
+	PageUp = 266,
+	PageDown = 267,
+	Home = 268,
+	End = 269,
+	CapsLock = 280,
+	ScrollLock = 281,
+	NumLock = 282,
+	PrintScreen = 283,
+	Pause = 284,
+	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,
+
+	/* Keypad */
+	KP0 = 320,
+	KP1 = 321,
+	KP2 = 322,
+	KP3 = 323,
+	KP4 = 324,
+	KP5 = 325,
+	KP6 = 326,
+	KP7 = 327,
+	KP8 = 328,
+	KP9 = 329,
+	KPDecimal = 330,
+	KPDivide = 331,
+	KPMultiply = 332,
+	KPSubtract = 333,
+	KPAdd = 334,
+	KPEnter = 335,
+	KPEqual = 336,
+
+	LeftShift = 340,
+	LeftControl = 341,
+	LeftAlt = 342,
+	LeftSuper = 343,
+	RightShift = 344,
+	RightControl = 345,
+	RightAlt = 346,
+	RightSuper = 347,
+	Menu = 348
+};
+// Define the mapping
+extern const std::unordered_map<SDL_Keycode, Keycode> sdlToCustom;
+
+// Function to map SDL_Keycode to custom Keycode
+Keycode getCustomKey(SDL_Keycode sdlKey);
diff --git a/mwe/events/include/loopManager.h b/mwe/events/include/loopManager.h
new file mode 100644
index 0000000..baffb94
--- /dev/null
+++ b/mwe/events/include/loopManager.h
@@ -0,0 +1,29 @@
+#pragma once
+#include "timer.h"
+#include "window.h"
+#include <SDL2/SDL.h>
+//#include "combinedEvent.h"
+#include "eventHandler.h"
+#include "eventManager.h"
+#include "loopManager.h"
+class LoopManager {
+public:
+	LoopManager();
+	void setup();
+	void loop();
+	void setRunning(bool running);
+
+private:
+	void processInput();
+	void update();
+	void lateUpdate();
+	void fixedUpdate();
+	void render();
+	bool gameRunning = false;
+	WindowManager window;
+	int timeScale = 1;
+	float accumulator = 0.0;
+	double currentTime;
+	double t = 0.0;
+	double dt = 0.01;
+};
diff --git a/mwe/events/include/timer.h b/mwe/events/include/timer.h
new file mode 100644
index 0000000..22383b2
--- /dev/null
+++ b/mwe/events/include/timer.h
@@ -0,0 +1,31 @@
+#pragma once
+
+#include <SDL2/SDL.h>
+
+class LoopTimer {
+public:
+	static LoopTimer & getInstance();
+	void start();
+	void update();
+	double getDeltaTime() const;
+	int getCurrentTime() const;
+	void advanceFixedUpdate();
+	double getFixedDeltaTime() const;
+	void setFPS(int FPS);
+	int getFPS() const;
+	void enforceFrameRate();
+	double getLag() const;
+
+private:
+	LoopTimer();
+	int FPS = 50;
+	double gameScale = 1;
+	double maximumDeltaTime = 0.25;
+	double deltaTime;
+	double frameTargetTime = FPS / 1000;
+	double fixedDeltaTime = 0.01;
+	double elapsedTime;
+	double elapsedFixedTime;
+	double time;
+	uint64_t lastFrameTime;
+};
diff --git a/mwe/events/include/userevent.h b/mwe/events/include/userevent.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/mwe/events/include/userevent.h
diff --git a/mwe/events/include/window.h b/mwe/events/include/window.h
new file mode 100644
index 0000000..9020b1a
--- /dev/null
+++ b/mwe/events/include/window.h
@@ -0,0 +1,19 @@
+#pragma once
+#include <SDL2/SDL.h>
+#include <iostream>
+#include <vector>
+class WindowManager {
+public:
+	WindowManager();
+	virtual ~WindowManager();
+	bool initWindow();
+	void destroyWindow();
+
+	SDL_Renderer * getRenderer();
+
+private:
+	const int SCREEN_WIDTH = 800;
+	const int SCREEN_HEIGHT = 600;
+	SDL_Window * window = NULL;
+	SDL_Renderer * renderer = NULL;
+};