Merge branch 'wouter/events-poc' of github.com:lonkaars/crepe

24 files changed, 1134 insertions, 1 deletions

diff --git a/mwe/.vscode/settings.json b/mwe/.vscode/settings.json
new file mode 100644
index 0000000..c7913ab
--- /dev/null
+++ b/mwe/.vscode/settings.json
@@ -0,0 +1,11 @@
+{
+    "files.associations": {
+        "variant": "cpp",
+        "*.tcc": "cpp",
+        "string": "cpp",
+        "unordered_map": "cpp",
+        "string_view": "cpp",
+        "ostream": "cpp",
+        "iostream": "cpp"
+    }
+}
diff --git a/mwe/events/.vscode/c_cpp_properties.json b/mwe/events/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000..64d3f90
--- /dev/null
+++ b/mwe/events/.vscode/c_cpp_properties.json
@@ -0,0 +1,15 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/**"
+            ],
+            "defines": [],
+            "cStandard": "c17",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "linux-clang-x64"
+        }
+    ],
+    "version": 4
+}
\ No newline at end of file
diff --git a/mwe/events/.vscode/settings.json b/mwe/events/.vscode/settings.json
new file mode 100644
index 0000000..816d790
--- /dev/null
+++ b/mwe/events/.vscode/settings.json
@@ -0,0 +1,68 @@
+{
+    "files.associations": {
+        "iostream": "cpp",
+        "array": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "*.tcc": "cpp",
+        "cctype": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "compare": "cpp",
+        "concepts": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "deque": "cpp",
+        "list": "cpp",
+        "map": "cpp",
+        "string": "cpp",
+        "unordered_map": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "algorithm": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory": "cpp",
+        "memory_resource": "cpp",
+        "numeric": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "string_view": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "initializer_list": "cpp",
+        "iosfwd": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "new": "cpp",
+        "numbers": "cpp",
+        "ostream": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "cinttypes": "cpp",
+        "typeinfo": "cpp",
+        "valarray": "cpp",
+        "variant": "cpp",
+        "condition_variable": "cpp",
+        "ctime": "cpp",
+        "forward_list": "cpp",
+        "executor": "cpp",
+        "io_context": "cpp",
+        "netfwd": "cpp",
+        "ratio": "cpp",
+        "timer": "cpp",
+        "future": "cpp",
+        "mutex": "cpp",
+        "semaphore": "cpp",
+        "stop_token": "cpp",
+        "thread": "cpp"
+    }
+}
diff --git a/mwe/events/CMakeLists.txt b/mwe/events/CMakeLists.txt
new file mode 100644
index 0000000..585d869
--- /dev/null
+++ b/mwe/events/CMakeLists.txt
@@ -0,0 +1,31 @@
+cmake_minimum_required(VERSION 3.5)
+project(gameloop)
+
+# Set the C++ standard (optional, but good practice)
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_EXPORT_COMPILE_COMMANDS 1)
+set(CMAKE_BUILD_TYPE Debug)
+
+# Find the SDL2 package
+find_package(SDL2 REQUIRED)
+
+add_executable(gameloop
+	src/window.cpp
+	src/main.cpp
+	#src/eventHandler.cpp
+	src/eventManager.cpp
+	src/event.cpp
+	src/loopManager.cpp
+	src/timer.cpp
+	src/keyCodes.cpp
+	src/eventHandler.cpp
+)
+
+# Link the SDL2 library to your project
+target_link_libraries(gameloop ${SDL2_LIBRARIES})
+
+# Include SDL2 header files and project headers
+target_include_directories(gameloop PRIVATE ${SDL2_INCLUDE_DIRS})
+target_include_directories(gameloop PRIVATE ${CMAKE_SOURCE_DIR}/include)
+
diff --git a/mwe/events/imgs/demo.bmp b/mwe/events/imgs/demo.bmp
new file mode 100644
index 0000000..65354fe
--- /dev/null
+++ b/mwe/events/imgs/demo.bmp
diff --git a/mwe/events/imgs/demo.jpg b/mwe/events/imgs/demo.jpg
new file mode 100644
index 0000000..f534e1b
--- /dev/null
+++ b/mwe/events/imgs/demo.jpg
diff --git a/mwe/events/include/event.h b/mwe/events/include/event.h
new file mode 100644
index 0000000..802140c
--- /dev/null
+++ b/mwe/events/include/event.h
@@ -0,0 +1,87 @@
+#pragma once
+#include <cstdint>
+#include <iostream>
+#include <string>
+#include <unordered_map>
+#include <variant>
+#include "keyCodes.h"
+
+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;
+};
diff --git a/mwe/events/include/eventHandler.h b/mwe/events/include/eventHandler.h
new file mode 100644
index 0000000..e5b99d6
--- /dev/null
+++ b/mwe/events/include/eventHandler.h
@@ -0,0 +1,48 @@
+#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..709796a
--- /dev/null
+++ b/mwe/events/include/eventManager.h
@@ -0,0 +1,57 @@
+#pragma once
+#include <unordered_map>
+#include <memory>
+#include "event.h"
+#include "keyCodes.h"
+#include "eventHandler.h"
+#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>> m_eventsQueue;
+    std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>> m_subscribers;
+    std::unordered_map<int, std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>> m_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..c3a7826
--- /dev/null
+++ b/mwe/events/include/keyCodes.h
@@ -0,0 +1,143 @@
+#pragma once
+#include <cstdint>
+#include <unordered_map>
+#include <SDL2/SDL.h>
+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..5c519d9
--- /dev/null
+++ b/mwe/events/include/loopManager.h
@@ -0,0 +1,28 @@
+#pragma once
+#include "window.h"
+#include <SDL2/SDL.h>
+#include "timer.h"
+//#include "combinedEvent.h"
+#include "eventManager.h"
+#include "loopManager.h"
+#include "eventHandler.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/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;
+};
diff --git a/mwe/events/src/event.cpp b/mwe/events/src/event.cpp
new file mode 100644
index 0000000..fecae76
--- /dev/null
+++ b/mwe/events/src/event.cpp
@@ -0,0 +1,56 @@
+#include "event.h"
+#include "keyCodes.h"
+// Event class methods
+Event::Event(std::string eventType) {
+    eventData["eventType"] = eventType;
+}
+
+void Event::addArgument(const std::string& key, const std::variant<int, std::string, float>& value) {
+    eventData[key] = value;
+}
+
+std::variant<int, std::string, float> Event::getArgument(const std::string& key) const {
+    return eventData.at(key);
+}
+
+std::string Event::getType() const {
+    return std::get<std::string>(eventData.at("eventType"));
+}
+std::string Event::toString() const {
+    return std::to_string(getEventType());
+}
+bool Event::getHandled() const {
+    return isHandled;
+}
+
+void Event::markHandled() {
+    isHandled = true;
+}
+
+// KeyPressedEvent class methods
+KeyPressedEvent::KeyPressedEvent(int keycode)
+    : Event("KeyPressedEvent"), key(keycode), repeatCount(0) {}
+
+Keycode KeyPressedEvent::getKeyCode() const {
+    return key;
+}
+
+int KeyPressedEvent::getRepeatCount() const {
+    return repeatCount;
+}
+
+// KeyReleasedEvent class methods
+KeyReleasedEvent::KeyReleasedEvent(int keycode)
+    : Event("KeyReleasedEvent"), key(keycode) {}
+
+Keycode KeyReleasedEvent::getKeyCode() const {
+    return key;
+}
+
+// MousePressedEvent class methods
+MousePressedEvent::MousePressedEvent(int mouseX, int mouseY)
+    : Event("MousePressedEvent"), mouseX(mouseX), mouseY(mouseY) {}
+
+std::pair<int, int> MousePressedEvent::getMousePosition() const {
+    return {mouseX, mouseY};
+}
diff --git a/mwe/events/src/eventHandler.cpp b/mwe/events/src/eventHandler.cpp
new file mode 100644
index 0000000..7040d8d
--- /dev/null
+++ b/mwe/events/src/eventHandler.cpp
@@ -0,0 +1,5 @@
+#include "eventHandler.h"
+void  IEventHandlerWrapper::exec(const Event& e)
+    {
+        call(e);
+    }
diff --git a/mwe/events/src/eventManager.cpp b/mwe/events/src/eventManager.cpp
new file mode 100644
index 0000000..ce8e940
--- /dev/null
+++ b/mwe/events/src/eventManager.cpp
@@ -0,0 +1,109 @@
+#include "eventManager.h"
+
+void EventManager::shutdown()
+{
+    m_subscribers.clear();
+}
+
+void EventManager::subscribe(int eventType, std::unique_ptr<IEventHandlerWrapper>&& handler, int eventId)
+{
+    if (eventId) {
+        std::unordered_map<int, std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>>::iterator subscribers = m_subscribersByEventId.find(eventType);
+
+        if (subscribers != m_subscribersByEventId.end()) {
+            std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>& handlersMap = subscribers->second;
+            std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator handlers = handlersMap.find(eventId);
+            if (handlers != handlersMap.end()) {
+                handlers->second.emplace_back(std::move(handler));
+                return;
+            }
+        }
+        m_subscribersByEventId[eventType][eventId].emplace_back(std::move(handler));
+
+    } else {
+        std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator subscribers = m_subscribers.find(eventType);
+        if (subscribers != m_subscribers.end()) {
+            std::vector<std::unique_ptr<IEventHandlerWrapper>>& handlers = subscribers->second;
+            for (std::unique_ptr<IEventHandlerWrapper>& it : handlers) {
+                if (it->getType() == handler->getType()) {
+                    // log for double register
+                    return;
+                }
+            }
+            handlers.emplace_back(std::move(handler));
+        } else {
+            m_subscribers[eventType].emplace_back(std::move(handler));
+        }
+    }
+}
+
+void EventManager::unsubscribe(int eventType, const std::string& handlerName, int eventId)
+{
+    if (eventId) {
+        std::unordered_map<int, std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>>::iterator subscribers = m_subscribersByEventId.find(eventType);
+        if (subscribers != m_subscribersByEventId.end()) {
+            std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>& handlersMap = subscribers->second;
+            std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator handlers = handlersMap.find(eventId);
+            if (handlers != handlersMap.end()) {
+                std::vector<std::unique_ptr<IEventHandlerWrapper>>& callbacks = handlers->second;
+                for (std::vector<std::unique_ptr<IEventHandlerWrapper>>::iterator it = callbacks.begin(); it != callbacks.end(); ++it) {
+                    if (it->get()->getType() == handlerName) {
+                        it = callbacks.erase(it);
+                        return;
+                    }
+                }
+            }
+        }
+    } else {
+        std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator handlersIt = m_subscribers.find(eventType);
+        if (handlersIt != m_subscribers.end()) {
+            std::vector<std::unique_ptr<IEventHandlerWrapper>>& handlers = handlersIt->second;
+            for (std::vector<std::unique_ptr<IEventHandlerWrapper>>::iterator it = handlers.begin(); it != handlers.end(); ++it) {
+                if (it->get()->getType() == handlerName) {
+                    it = handlers.erase(it);
+                    return;
+                }
+            }
+        }
+    }
+}
+
+void EventManager::triggerEvent(const Event& event_, int eventId)
+{
+    std::vector<std::unique_ptr<IEventHandlerWrapper>>& handlers = m_subscribers[event_.getEventType()];
+    for (std::unique_ptr<IEventHandlerWrapper>& handler : handlers) {
+        handler->exec(event_);
+    }
+
+    std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>& handlersMap = m_subscribersByEventId[event_.getEventType()];
+    std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator handlersIt = handlersMap.find(eventId);
+    if (handlersIt != handlersMap.end()) {
+        std::vector<std::unique_ptr<IEventHandlerWrapper>>& callbacks = handlersIt->second;
+        for (std::vector<std::unique_ptr<IEventHandlerWrapper>>::iterator it = callbacks.begin(); it != callbacks.end();) {
+            std::unique_ptr<IEventHandlerWrapper>& handler = *it;
+            handler->exec(event_);
+            if (handler->isDestroyOnSuccess()) {
+                it = callbacks.erase(it);
+            } else {
+                ++it;
+            }
+        }
+    }
+}
+
+void EventManager::queueEvent(std::unique_ptr<Event>&& event_, int eventId)
+{
+    m_eventsQueue.emplace_back(std::move(event_), eventId);
+}
+
+void EventManager::dispatchEvents()
+{
+    for (std::vector<std::pair<std::unique_ptr<Event>, int>>::iterator eventIt = m_eventsQueue.begin(); eventIt != m_eventsQueue.end();) {
+        if (!eventIt->first.get()->getHandled()) {
+            triggerEvent(*eventIt->first.get(), eventIt->second);
+            eventIt = m_eventsQueue.erase(eventIt);
+        } else {
+            ++eventIt;
+        }
+    }
+}
diff --git a/mwe/events/src/keyCodes.cpp b/mwe/events/src/keyCodes.cpp
new file mode 100644
index 0000000..6f35d11
--- /dev/null
+++ b/mwe/events/src/keyCodes.cpp
@@ -0,0 +1,140 @@
+#include "keyCodes.h"
+
+const std::unordered_map<SDL_Keycode, Keycode> sdlToCustom = {
+    { SDLK_SPACE, Space },
+    { SDLK_QUOTE, Apostrophe },
+    { SDLK_COMMA, Comma },
+    { SDLK_MINUS, Minus },
+    { SDLK_PERIOD, Period },
+    { SDLK_SLASH, Slash },
+
+    { SDLK_0, D0 },
+    { SDLK_1, D1 },
+    { SDLK_2, D2 },
+    { SDLK_3, D3 },
+    { SDLK_4, D4 },
+    { SDLK_5, D5 },
+    { SDLK_6, D6 },
+    { SDLK_7, D7 },
+    { SDLK_8, D8 },
+    { SDLK_9, D9 },
+
+    { SDLK_SEMICOLON, Semicolon },
+    { SDLK_EQUALS, Equal },
+
+    { SDLK_a, A },
+    { SDLK_b, B },
+    { SDLK_c, C },
+    { SDLK_d, D },
+    { SDLK_e, E },
+    { SDLK_f, F },
+    { SDLK_g, G },
+    { SDLK_h, H },
+    { SDLK_i, I },
+    { SDLK_j, J },
+    { SDLK_k, K },
+    { SDLK_l, L },
+    { SDLK_m, M },
+    { SDLK_n, N },
+    { SDLK_o, O },
+    { SDLK_p, P },
+    { SDLK_q, Q },
+    { SDLK_r, R },
+    { SDLK_s, S },
+    { SDLK_t, T },
+    { SDLK_u, U },
+    { SDLK_v, V },
+    { SDLK_w, W },
+    { SDLK_x, X },
+    { SDLK_y, Y },
+    { SDLK_z, Z },
+
+    { SDLK_LEFTBRACKET, LeftBracket },
+    { SDLK_BACKSLASH, Backslash },
+    { SDLK_RIGHTBRACKET, RightBracket },
+    { SDLK_BACKQUOTE, GraveAccent },
+
+    { SDLK_ESCAPE, Escape },
+    { SDLK_RETURN, Enter },
+    { SDLK_TAB, Tab },
+    { SDLK_BACKSPACE, Backspace },
+    { SDLK_INSERT, Insert },
+    { SDLK_DELETE, Delete },
+    { SDLK_RIGHT, Right },
+    { SDLK_LEFT, Left },
+    { SDLK_DOWN, Down },
+    { SDLK_UP, Up },
+    { SDLK_PAGEUP, PageUp },
+    { SDLK_PAGEDOWN, PageDown },
+    { SDLK_HOME, Home },
+    { SDLK_END, End },
+
+    { SDLK_CAPSLOCK, CapsLock },
+    { SDLK_SCROLLLOCK, ScrollLock },
+    { SDLK_NUMLOCKCLEAR, NumLock },
+    { SDLK_PRINTSCREEN, PrintScreen },
+    { SDLK_PAUSE, Pause },
+
+    { SDLK_F1, F1 },
+    { SDLK_F2, F2 },
+    { SDLK_F3, F3 },
+    { SDLK_F4, F4 },
+    { SDLK_F5, F5 },
+    { SDLK_F6, F6 },
+    { SDLK_F7, F7 },
+    { SDLK_F8, F8 },
+    { SDLK_F9, F9 },
+    { SDLK_F10, F10 },
+    { SDLK_F11, F11 },
+    { SDLK_F12, F12 },
+    { SDLK_F13, F13 },
+    { SDLK_F14, F14 },
+    { SDLK_F15, F15 },
+    { SDLK_F16, F16 },
+    { SDLK_F17, F17 },
+    { SDLK_F18, F18 },
+    { SDLK_F19, F19 },
+    { SDLK_F20, F20 },
+    { SDLK_F21, F21 },
+    { SDLK_F22, F22 },
+    { SDLK_F23, F23 },
+    { SDLK_F24, F24 },
+
+    { SDLK_KP_0, KP0 },
+    { SDLK_KP_1, KP1 },
+    { SDLK_KP_2, KP2 },
+    { SDLK_KP_3, KP3 },
+    { SDLK_KP_4, KP4 },
+    { SDLK_KP_5, KP5 },
+    { SDLK_KP_6, KP6 },
+    { SDLK_KP_7, KP7 },
+    { SDLK_KP_8, KP8 },
+    { SDLK_KP_9, KP9 },
+
+    { SDLK_KP_DECIMAL, KPDecimal },
+    { SDLK_KP_DIVIDE, KPDivide },
+    { SDLK_KP_MULTIPLY, KPMultiply },
+    { SDLK_KP_MINUS, KPSubtract },
+    { SDLK_KP_PLUS, KPAdd },
+    { SDLK_KP_ENTER, KPEnter },
+    { SDLK_KP_EQUALS, KPEqual },
+
+    { SDLK_LSHIFT, LeftShift },
+    { SDLK_LCTRL, LeftControl },
+    { SDLK_LALT, LeftAlt },
+    { SDLK_LGUI, LeftSuper },
+
+    { SDLK_RSHIFT, RightShift },
+    { SDLK_RCTRL, RightControl },
+    { SDLK_RALT, RightAlt },
+    { SDLK_RGUI, RightSuper },
+
+    { SDLK_MENU, Menu }
+};
+Keycode getCustomKey(SDL_Keycode sdlKey) {
+    auto it = sdlToCustom.find(sdlKey);
+    if (it != sdlToCustom.end()) {
+        return it->second;
+    }
+    return 0;
+}
diff --git a/mwe/events/src/loopManager.cpp b/mwe/events/src/loopManager.cpp
new file mode 100644
index 0000000..6defda0
--- /dev/null
+++ b/mwe/events/src/loopManager.cpp
@@ -0,0 +1,90 @@
+#include "loopManager.h"
+
+LoopManager::LoopManager() {}
+void LoopManager::processInput() {
+	SDL_Event event;
+	SDL_PollEvent(&event);
+	switch (event.type) {
+		case SDL_QUIT:
+			gameRunning = 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;
+	}
+}
+void LoopManager::setRunning(bool running){
+	this->gameRunning = running;
+}
+void LoopManager::fixedUpdate() { 
+	//fprintf(stderr, "fixed update\n"); 
+}
+void LoopManager::loop() {
+	LoopTimer & timer = LoopTimer::getInstance();
+	timer.start();
+
+	while (gameRunning) {
+		timer.update();
+
+		while (timer.getLag() >= timer.getFixedDeltaTime()) {
+			processInput();
+			fixedUpdate();
+			timer.advanceFixedUpdate();
+		}
+
+		update();
+		render();
+
+		timer.enforceFrameRate();
+	}
+
+	window.destroyWindow();
+}
+void onKey(const KeyPressedEvent& e)
+{
+   	int keyCode = e.getKeyCode();
+	std::cout << "keycode pressed: " << keyCode << std::endl;
+
+}
+void onMouse(const MousePressedEvent& e){
+		fprintf(stderr, "mouse Position X: %d Y: %d\n", e.getMousePosition().first, e.getMousePosition().second);
+}
+void LoopManager::setup() {
+	gameRunning = window.initWindow();
+	LoopTimer::getInstance().start();
+	LoopTimer::getInstance().setFPS(50);
+	EventHandler<KeyPressedEvent> callback = onKey;
+    subscribe<KeyPressedEvent>(callback,false);
+	EventHandler<MousePressedEvent> mouseCallback = onMouse;
+    subscribe<MousePressedEvent>(mouseCallback ,false);
+	EventHandler<KeyPressedEvent> closeWindowCallback = [this](const KeyPressedEvent& e) {
+		if(e.getKeyCode() == Escape){
+			this->setRunning(false);
+		}
+    };
+    subscribe<KeyPressedEvent>(closeWindowCallback,false);
+
+}
+void LoopManager::render() {
+	//fprintf(stderr, "**********render********** \n");
+	if (gameRunning) {
+		//window.render(objectList);
+	}
+}
+
+void LoopManager::update() {
+	//fprintf(stderr, "**********normal update********** \n");
+	LoopTimer & timer = LoopTimer::getInstance();
+
+	float delta = timer.getDeltaTime();
+
+	// for (int i = 0; i < objectList.size(); i++) {
+	// 	objectList[i]->setX(objectList[i]->getX() + 50 * delta);
+	// 	objectList[i]->setY(objectList[i]->getY() + 50 * delta);
+	// }
+}
diff --git a/mwe/events/src/main.cpp b/mwe/events/src/main.cpp
new file mode 100644
index 0000000..3940c60
--- /dev/null
+++ b/mwe/events/src/main.cpp
@@ -0,0 +1,50 @@
+#include <SDL2/SDL.h>
+#include <iostream>
+#include <memory>
+#include "loopManager.h"
+#include "event.h"
+
+class PlayerDamagedEvent : public Event {
+public:
+    PlayerDamagedEvent(int damage, int playerID)
+        : Event("PlayerDamaged"), damage(damage), playerID(playerID) {}
+
+    REGISTER_EVENT_TYPE(PlayerDamagedEvent);
+
+    int getDamage() const { return damage; }
+    int getPlayerID() const { return playerID; }
+
+private:
+    int damage;
+    int playerID;
+};
+void onPlayerDamaged(const PlayerDamagedEvent& e) {
+    std::cout << "Player " << e.getPlayerID() << " took " << e.getDamage() << " damage." << std::endl;
+}
+
+void onKeyPressed(const KeyPressedEvent& e)
+{
+   const int keyCode = e.getKeyCode();
+	fprintf(stderr,"KeyCode %d\n",keyCode);
+}
+int main(int argc, char* args[]) {
+	LoopManager gameLoop;
+	// Create an event handler for KeyPressedEvent
+    // EventHandler<KeyPressedEvent> callback = [](const KeyPressedEvent& e) {
+    //     onKeyPressed(e);
+    // };
+	// custom event class poc
+	EventHandler<PlayerDamagedEvent> playerDamagedHandler = onPlayerDamaged;
+	subscribe<PlayerDamagedEvent>(playerDamagedHandler);
+
+	triggerEvent(PlayerDamagedEvent(50, 1));
+	//EventHandler<KeyPressedEvent> callback = onKeyPressed;
+    //subscribe<KeyPressedEvent>(callback,false);
+	std::unique_ptr<Event> anotherKeyPressEvent = std::make_unique<KeyPressedEvent>(65);
+    queueEvent(std::move(anotherKeyPressEvent));
+    triggerEvent(KeyPressedEvent(42));
+	EventManager::getInstance().dispatchEvents();
+	gameLoop.setup();
+	gameLoop.loop();
+    return 0;
+}
diff --git a/mwe/events/src/timer.cpp b/mwe/events/src/timer.cpp
new file mode 100644
index 0000000..f4fee23
--- /dev/null
+++ b/mwe/events/src/timer.cpp
@@ -0,0 +1,54 @@
+#include "timer.h"
+
+LoopTimer::LoopTimer() {}
+LoopTimer & LoopTimer::getInstance() {
+	static LoopTimer instance;
+	return instance;
+}
+
+void LoopTimer::start() {
+	lastFrameTime = SDL_GetTicks64();
+	elapsedTime = 0;
+	elapsedFixedTime = 0;
+	deltaTime = 0;
+}
+
+// Update the timer, calculate deltaTime
+void LoopTimer::update() {
+	uint64_t currentFrameTime = SDL_GetTicks64();
+	deltaTime
+		= (currentFrameTime - lastFrameTime) / 1000.0;
+
+	if (deltaTime > maximumDeltaTime) {
+		deltaTime = maximumDeltaTime;
+	}
+
+	elapsedTime += deltaTime;
+	lastFrameTime = currentFrameTime;
+}
+
+double LoopTimer::getDeltaTime() const { return deltaTime; }
+int LoopTimer::getCurrentTime() const { return SDL_GetTicks(); }
+
+void LoopTimer::advanceFixedUpdate() { elapsedFixedTime += fixedDeltaTime; }
+
+double LoopTimer::getFixedDeltaTime() const { return fixedDeltaTime; }
+
+void LoopTimer::setFPS(int FPS) {
+	this->FPS = FPS;
+	frameTargetTime = 1.0 / FPS;
+}
+
+int LoopTimer::getFPS() const { return FPS; }
+
+void LoopTimer::enforceFrameRate() {
+	uint64_t currentFrameTime = SDL_GetTicks64();
+	double frameDuration = (currentFrameTime - lastFrameTime) / 1000.0;
+
+	if (frameDuration < frameTargetTime) {
+		uint32_t delayTime
+			= (uint32_t) ((frameTargetTime - frameDuration) * 1000.0);
+		SDL_Delay(delayTime);
+	}
+}
+double LoopTimer::getLag() const { return elapsedTime - elapsedFixedTime; }
diff --git a/mwe/events/src/window.cpp b/mwe/events/src/window.cpp
new file mode 100644
index 0000000..9cafd57
--- /dev/null
+++ b/mwe/events/src/window.cpp
@@ -0,0 +1,30 @@
+#include "window.h"
+WindowManager::WindowManager() {
+}
+WindowManager::~WindowManager() { destroyWindow(); }
+SDL_Renderer * WindowManager::getRenderer() { return renderer; }
+
+bool WindowManager::initWindow() {
+	if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
+		fprintf(stderr, "Error inititalising SDL.\n");
+		return false;
+	}
+	window = SDL_CreateWindow("SDL Tutorial", SDL_WINDOWPOS_UNDEFINED,
+							  SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH,
+							  SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
+	if (!window) {
+		fprintf(stderr, "Error creating SDL Window. \n");
+		return false;
+	}
+	renderer = SDL_CreateRenderer(window, -1, 0);
+	if (!renderer) {
+		fprintf(stderr, "Error creating SDL renderer. \n");
+		return false;
+	}
+	return true;
+}
+void WindowManager::destroyWindow() {
+	SDL_DestroyRenderer(renderer);
+	SDL_DestroyWindow(window);
+	SDL_Quit();
+}
diff --git a/mwe/events/versions/delayBased.cpp b/mwe/events/versions/delayBased.cpp
new file mode 100644
index 0000000..253a03a
--- /dev/null
+++ b/mwe/events/versions/delayBased.cpp
@@ -0,0 +1,56 @@
+#include "loopManager.h"
+#include "timer.h"
+LoopManager::LoopManager() {}
+void LoopManager::processInput() {
+	SDL_Event event;
+	SDL_PollEvent(&event);
+	switch (event.type) {
+		case SDL_QUIT:
+			gameRunning = false;
+			break;
+		case SDL_KEYDOWN:
+			if (event.key.keysym.sym == SDLK_ESCAPE) {
+				gameRunning = false;
+			}
+			break;
+	}
+}
+void LoopManager::loop() {
+	fprintf(stderr, "loop. \n");
+	while (gameRunning) {
+		//Timer::getInstance().update();
+		//deltaTime = Timer::getInstance().getDeltaTime();
+		processInput();
+		update();
+		render();
+	}
+	window.destroyWindow();
+}
+void LoopManager::setup() {
+	gameRunning = window.initWindow();
+	LoopTimer::getInstance().start();
+	LoopTimer::getInstance().setFPS(210);
+
+	for (int i = 0; i < 2; i++) {
+		GameObject * square2
+			= new GameObject("square2", i * 40, i * 40, 20, 20, 0, 0);
+		objectList.push_back(square2);
+	}
+}
+void LoopManager::render() {
+	if (gameRunning) {
+		window.render(objectList);
+	}
+}
+
+void LoopManager::update() {
+	LoopTimer & timer = LoopTimer::getInstance();
+	timer.enforceFrameRate();
+	timer.update();
+	float delta = timer.getDeltaTime();
+
+	for (int i = 0; i < objectList.size(); i++) {
+		objectList[i]->setX(objectList[i]->getX() + 50 * delta);
+		objectList[i]->setY(objectList[i]->getY() + 50 * delta);
+	}
+}
diff --git a/mwe/gameloop/include/eventManager.h b/mwe/gameloop/include/eventManager.h
index 69c6801..ba1ca32 100644
--- a/mwe/gameloop/include/eventManager.h
+++ b/mwe/gameloop/include/eventManager.h
@@ -1 +1,5 @@
-class EventManager {};
+#pragma once
+class EventManager {
+	public:
+		EventManager();
+};
diff --git a/mwe/gameloop/include/loopManager.h b/mwe/gameloop/include/loopManager.h
index e202423..dcbfedc 100644
--- a/mwe/gameloop/include/loopManager.h
+++ b/mwe/gameloop/include/loopManager.h
@@ -2,6 +2,7 @@
 #include "gameObject.h"
 #include "window.h"
 #include <SDL2/SDL.h>
+#include "event.h"
 class LoopManager {
 public:
 	LoopManager();