added eventManager reference to interfaces

13 files changed, 365 insertions, 343 deletions

diff --git a/src/crepe/api/Event.h b/src/crepe/api/Event.h
index e7cac25..d5ddf0a 100644
--- a/src/crepe/api/Event.h
+++ b/src/crepe/api/Event.h
@@ -1,10 +1,9 @@
 #pragma once
 
-#include <iostream>
 #include <string>
-#include <typeindex>
 
 #include "KeyCodes.h"
+
 /**
  * \brief Base class for all event types in the system.
  */
@@ -17,11 +16,11 @@ public:
  */
 class KeyPressEvent : public Event {
 public:
-    //! Number of times the key press is repeated (e.g., for long presses).
-    int repeat = 0;
+	//! Number of times the key press is repeated (e.g., for long presses).
+	int repeat = 0;
 
-    //! The key that was pressed.
-    Keycode key = Keycode::NONE;
+	//! The key that was pressed.
+	Keycode key = Keycode::NONE;
 };
 
 /**
@@ -29,8 +28,8 @@ public:
  */
 class KeyReleaseEvent : public Event {
 public:
-    //! The key that was released.
-    Keycode key = Keycode::NONE;
+	//! The key that was released.
+	Keycode key = Keycode::NONE;
 };
 
 /**
@@ -38,14 +37,14 @@ public:
  */
 class MousePressEvent : public Event {
 public:
-    //! X-coordinate of the mouse position at the time of the event.
-    int mouse_x = 0;
+	//! 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;
+	//! Y-coordinate of the mouse position at the time of the event.
+	int mouse_y = 0;
 
-    //! The mouse button that was pressed.
-    MouseButton button = MouseButton::NONE;
+	//! The mouse button that was pressed.
+	MouseButton button = MouseButton::NONE;
 };
 
 /**
@@ -53,14 +52,14 @@ public:
  */
 class MouseClickEvent : public Event {
 public:
-    //! X-coordinate of the mouse position at the time of the event.
-    int mouse_x = 0;
+	//! 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;
+	//! Y-coordinate of the mouse position at the time of the event.
+	int mouse_y = 0;
 
-    //! The mouse button that was clicked.
-    MouseButton button = MouseButton::NONE;
+	//! The mouse button that was clicked.
+	MouseButton button = MouseButton::NONE;
 };
 
 /**
@@ -68,14 +67,14 @@ public:
  */
 class MouseReleaseEvent : public Event {
 public:
-    //! X-coordinate of the mouse position at the time of the event.
-    int mouse_x = 0;
+	//! 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;
+	//! Y-coordinate of the mouse position at the time of the event.
+	int mouse_y = 0;
 
-    //! The mouse button that was released.
-    MouseButton button = MouseButton::NONE;
+	//! The mouse button that was released.
+	MouseButton button = MouseButton::NONE;
 };
 
 /**
@@ -83,11 +82,11 @@ public:
  */
 class MouseMoveEvent : public Event {
 public:
-    //! X-coordinate of the mouse position at the time of the event.
-    int mouse_x = 0;
+	//! 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;
+	//! Y-coordinate of the mouse position at the time of the event.
+	int mouse_y = 0;
 };
 
 /**
@@ -95,8 +94,8 @@ public:
  */
 class CollisionEvent : public Event {
 public:
-    //! Data describing the collision (currently not implemented).
-    // Collision collisionData;
+	//! Data describing the collision (currently not implemented).
+	// Collision collisionData;
 };
 
 /**
@@ -104,8 +103,8 @@ public:
  */
 class TextSubmitEvent : public Event {
 public:
-    //! The submitted text.
-    std::string text = "";
+	//! The submitted text.
+	std::string text = "";
 };
 
 /**
diff --git a/src/crepe/api/EventHandler.cpp b/src/crepe/api/EventHandler.cpp
index d90d765..186ec9c 100644
--- a/src/crepe/api/EventHandler.cpp
+++ b/src/crepe/api/EventHandler.cpp
@@ -3,6 +3,4 @@
 using namespace crepe;
 
 // Implementation of IEventHandlerWrapper::exec
-bool IEventHandlerWrapper::exec(const Event & e) {
-    return call(e);
-}
+bool IEventHandlerWrapper::exec(const Event & e) { return call(e); }
diff --git a/src/crepe/api/EventHandler.h b/src/crepe/api/EventHandler.h
index 2a684c0..db51d04 100644
--- a/src/crepe/api/EventHandler.h
+++ b/src/crepe/api/EventHandler.h
@@ -26,12 +26,12 @@ using EventHandler = std::function<bool(const EventType & e)>;
  */
 class IEventHandlerWrapper {
 public:
-    /**
+	/**
      * \brief Virtual destructor for IEventHandlerWrapper.
      */
-    virtual ~IEventHandlerWrapper() = default;
+	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.
@@ -39,19 +39,19 @@ public:
      * \param e The event to be processed.
      * \return A boolean value indicating whether the event is handled.
      */
-    bool exec(const Event & e);
+	bool exec(const Event & e);
 
-    /**
+	/**
      * \brief Get the type of the event handler.
      * 
      * This method returns the type of the event handler as a string.
      * 
      * \return A string representing the handler's type.
      */
-    virtual std::string get_type() const = 0;
+	virtual std::string get_type() const = 0;
 
 private:
-    /**
+	/**
      * \brief The method responsible for handling the event.
      * 
      * This method is implemented by derived classes to process the event.
@@ -59,7 +59,7 @@ private:
      * \param e The event to be processed.
      * \return A boolean value indicating whether the event is handled.
      */
-    virtual bool call(const Event & e) = 0;
+	virtual bool call(const Event & e) = 0;
 };
 
 /**
@@ -75,17 +75,17 @@ private:
 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);
+	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.
@@ -93,21 +93,21 @@ private:
      * \param e The event to be handled.
      * \return A boolean value indicating whether the event is handled.
      */
-    bool call(const Event & e) override;
+	bool call(const Event & e) override;
 
-    /**
+	/**
      * \brief Returns the type of the handler.
      * 
      * This method returns a string representing the type of the event handler.
      * 
      * \return The handler type as a string.
      */
-    std::string get_type() const override;
+	std::string get_type() const override;
 
-    //! The event handler function.
-    EventHandler<EventType> m_handler;
-    //! The type name of the handler function.
-    const std::string m_handler_type;
+	//! The event handler function.
+	EventHandler<EventType> m_handler;
+	//! The type name of the handler function.
+	const std::string m_handler_type;
 };
 
 } // namespace crepe
diff --git a/src/crepe/api/EventHandler.hpp b/src/crepe/api/EventHandler.hpp
index 1b5702e..564d3d7 100644
--- a/src/crepe/api/EventHandler.hpp
+++ b/src/crepe/api/EventHandler.hpp
@@ -7,19 +7,21 @@ namespace crepe {
 
 // Implementation of EventHandlerWrapper constructor
 template <typename EventType>
-EventHandlerWrapper<EventType>::EventHandlerWrapper(const EventHandler<EventType> & handler)
-    : m_handler(handler), m_handler_type(m_handler.target_type().name()) {}
+EventHandlerWrapper<EventType>::EventHandlerWrapper(
+	const EventHandler<EventType> & handler)
+	: m_handler(handler),
+	  m_handler_type(m_handler.target_type().name()) {}
 
 // Implementation of EventHandlerWrapper::call
 template <typename EventType>
 bool EventHandlerWrapper<EventType>::call(const Event & e) {
-    return m_handler(static_cast<const EventType &>(e));
+	return m_handler(static_cast<const EventType &>(e));
 }
 
 // Implementation of EventHandlerWrapper::get_type
 template <typename EventType>
 std::string EventHandlerWrapper<EventType>::get_type() const {
-    return m_handler_type;
+	return m_handler_type;
 }
 
 } //namespace crepe
diff --git a/src/crepe/api/EventManager.cpp b/src/crepe/api/EventManager.cpp
index e881d49..a04f08b 100644
--- a/src/crepe/api/EventManager.cpp
+++ b/src/crepe/api/EventManager.cpp
@@ -8,10 +8,10 @@ EventManager & EventManager::get_instance() {
 }
 
 void EventManager::dispatch_events() {
-	for (std::vector<std::tuple<std::unique_ptr<Event>, int,
-								std::type_index>>::iterator event_it
-		 = this->events_queue.begin();
-		 event_it != this->events_queue.end();) {
+	using HandlersMap = std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>;
+	using HandlersVec = std::vector<std::unique_ptr<IEventHandlerWrapper>>;
+
+	for (auto event_it = this->events_queue.begin(); event_it != this->events_queue.end();) {
 		std::unique_ptr<Event> & event = std::get<0>(*event_it);
 		int channel = std::get<1>(*event_it);
 		std::type_index event_type = std::get<2>(*event_it);
@@ -19,29 +19,13 @@ void EventManager::dispatch_events() {
 		bool event_handled = false;
 
 		if (channel) {
-			std::unordered_map<
-				std::type_index,
-				std::unordered_map<
-					int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>>::
-				iterator handlers_it
-				= subscribers_by_event_id.find(event_type);
+			auto handlers_it = subscribers_by_event_id.find(event_type);
 			if (handlers_it != subscribers_by_event_id.end()) {
-				std::unordered_map<
-					int, std::vector<std::unique_ptr<IEventHandlerWrapper>>> &
-					handlers_map
-					= handlers_it->second;
-				std::unordered_map<
-					int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>::
-					iterator handlers
-					= handlers_map.find(channel);
+				HandlersMap & handlers_map = handlers_it->second;
+				auto handlers = handlers_map.find(channel);
 				if (handlers != handlers_map.end()) {
-					std::vector<std::unique_ptr<IEventHandlerWrapper>> &
-						callbacks
-						= handlers->second;
-					for (std::vector<std::unique_ptr<IEventHandlerWrapper>>::
-							 iterator handler_it
-						 = callbacks.begin();
-						 handler_it != callbacks.end(); ++handler_it) {
+					HandlersVec & callbacks = handlers->second;
+					for (auto handler_it = callbacks.begin(); handler_it != callbacks.end(); ++handler_it) {
 						if ((*handler_it)->exec(*event)) {
 							event_it = events_queue.erase(event_it);
 							event_handled = true;
@@ -52,18 +36,10 @@ void EventManager::dispatch_events() {
 			}
 		} else {
 			// Handle event for all channels
-			std::unordered_map<
-				std::type_index,
-				std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator
-				handlers_it
-				= this->subscribers.find(event_type);
+			auto handlers_it = this->subscribers.find(event_type);
 			if (handlers_it != this->subscribers.end()) {
-				std::vector<std::unique_ptr<IEventHandlerWrapper>> & handlers
-					= handlers_it->second;
-				for (std::vector<std::unique_ptr<IEventHandlerWrapper>>::
-						 iterator handler_it
-					 = handlers.begin();
-					 handler_it != handlers.end(); ++handler_it) {
+				HandlersVec & handlers = handlers_it->second;
+				for (auto handler_it = handlers.begin(); handler_it != handlers.end(); ++handler_it) {
 					// remove event from queue since and continue when callback returns true
 					if ((*handler_it)->exec(*event)) {
 						event_it = this->events_queue.erase(event_it);
@@ -79,3 +55,4 @@ void EventManager::dispatch_events() {
 		}
 	}
 }
+
diff --git a/src/crepe/api/EventManager.h b/src/crepe/api/EventManager.h
index 38d2e64..1ff4031 100644
--- a/src/crepe/api/EventManager.h
+++ b/src/crepe/api/EventManager.h
@@ -10,8 +10,8 @@
 #include "Event.h"
 #include "EventHandler.h"
 
-
 namespace crepe {
+	
 /**
  * \class EventManager
  * \brief The EventManager class is responsible for managing the subscription, triggering, 
@@ -20,16 +20,6 @@ namespace crepe {
 class EventManager {
 public:
 	/**
-     * \brief Deleted copy constructor to prevent copying of the EventManager instance.
-     */
-	EventManager(const EventManager &) = delete;
-
-	/**
-     * \brief Deleted copy assignment operator to prevent assignment of the EventManager instance.
-     */
-	const EventManager & operator=(const EventManager &) = delete;
-
-	/**
      * \brief Get the singleton instance of the EventManager.
      * 
      * This method returns the unique instance of the EventManager, creating it on the first call.
diff --git a/src/crepe/api/EventManager.hpp b/src/crepe/api/EventManager.hpp
index 70f0a31..1e505f4 100644
--- a/src/crepe/api/EventManager.hpp
+++ b/src/crepe/api/EventManager.hpp
@@ -1,17 +1,18 @@
 #include "EventManager.h"
+
 namespace crepe {
 
 template <typename EventType>
 void EventManager::subscribe(EventHandler<EventType> && callback, int channel) {
+	using HandlersMap = std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>;
+	using HandlersVec = std::vector<std::unique_ptr<IEventHandlerWrapper>>;
+
 	std::type_index event_type = typeid(EventType);
 	std::unique_ptr<EventHandlerWrapper<EventType>> handler
 		= std::make_unique<EventHandlerWrapper<EventType>>(callback);
 
 	if (channel) {
-		std::unordered_map<int,
-						   std::vector<std::unique_ptr<IEventHandlerWrapper>>> &
-			handlers_map
-			= this->subscribers_by_event_id[event_type];
+		HandlersMap & handlers_map = this->subscribers_by_event_id[event_type];
 		auto handlers = handlers_map.find(channel);
 		if (handlers != handlers_map.end()) {
 			handlers->second.emplace_back(std::move(handler));
@@ -19,8 +20,7 @@ void EventManager::subscribe(EventHandler<EventType> && callback, int channel) {
 			handlers_map[channel].emplace_back(std::move(handler));
 		}
 	} else {
-		std::vector<std::unique_ptr<IEventHandlerWrapper>> & handlers
-			= this->subscribers[event_type];
+		HandlersVec & handlers = this->subscribers[event_type];
 		handlers.emplace_back(std::move(handler));
 	}
 }
@@ -29,8 +29,7 @@ template <typename EventType>
 void EventManager::queue_event(EventType && event, int channel) {
 	std::type_index event_type = std::type_index(typeid(EventType));
 
-	std::unique_ptr<EventType> event_ptr
-		= std::make_unique<EventType>(std::forward<EventType>(event));
+	auto event_ptr = std::make_unique<EventType>(std::forward<EventType>(event));
 
 	std::tuple<std::unique_ptr<Event>, int, std::type_index> tuple(
 		std::move(event_ptr), channel, event_type);
@@ -39,59 +38,51 @@ void EventManager::queue_event(EventType && event, int channel) {
 
 template <typename EventType>
 void EventManager::trigger_event(const EventType & event, int channel) {
+	using HandlersMap = std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>;
+	using HandlersVec = std::vector<std::unique_ptr<IEventHandlerWrapper>>;
+
 	std::type_index event_type = std::type_index(typeid(EventType));
 
 	if (channel > 0) {
-		std::unordered_map<int,
-						   std::vector<std::unique_ptr<IEventHandlerWrapper>>> &
-			handlers_map
-			= this->subscribers_by_event_id[event_type];
+		HandlersMap & handlers_map = this->subscribers_by_event_id[event_type];
 		auto handlers_it = handlers_map.find(channel);
 
 		if (handlers_it != handlers_map.end()) {
-			std::vector<std::unique_ptr<IEventHandlerWrapper>> & handlers
-				= handlers_it->second;
-			for (auto it = handlers.begin();
-				 it != handlers.end();++it) {
+			HandlersVec & handlers = handlers_it->second;
+			for (auto it = handlers.begin(); it != handlers.end(); ++it) {
 				// stops when callback returns true
-				if((*it)->exec(event)){
+				if ((*it)->exec(event)) {
 					break;
 				}
 			}
 		}
 	} else {
-		std::vector<std::unique_ptr<IEventHandlerWrapper>> & handlers
-			= this->subscribers[event_type];
-		for (auto it
-			 = handlers.begin();
-			 it != handlers.end();++it) {
+		HandlersVec & handlers = this->subscribers[event_type];
+		for (auto it = handlers.begin(); it != handlers.end(); ++it) {
 			// stops when callback returns true
-			if((*it)->exec(event)){
-					break;
-				}
+			if ((*it)->exec(event)) {
+				break;
+			}
 		}
 	}
 }
 
 template <typename EventType>
-void EventManager::unsubscribe(const EventHandler<EventType> & callback,
-							   int channel) {
+void EventManager::unsubscribe(const EventHandler<EventType> & callback, int channel) {
+	using HandlersMap = std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>;
+	using HandlersVec = std::vector<std::unique_ptr<IEventHandlerWrapper>>;
+
 	std::type_index event_type(typeid(EventType));
 	std::string handler_name = callback.target_type().name();
 
 	if (channel) {
 		auto subscriber_list = this->subscribers_by_event_id.find(event_type);
 		if (subscriber_list != this->subscribers_by_event_id.end()) {
-			std::unordered_map<
-				int, std::vector<std::unique_ptr<IEventHandlerWrapper>>> &
-				handlers_map
-				= subscriber_list->second;
-				auto handlers = handlers_map.find(channel);
+			HandlersMap & handlers_map = subscriber_list->second;
+			auto handlers = handlers_map.find(channel);
 			if (handlers != handlers_map.end()) {
-				std::vector<std::unique_ptr<IEventHandlerWrapper>> & callbacks
-					= handlers->second;
-				for (auto it = callbacks.begin();
-					 it != callbacks.end(); ++it) {
+				HandlersVec & callbacks = handlers->second;
+				for (auto it = callbacks.begin(); it != callbacks.end(); ++it) {
 					if ((*it)->get_type() == handler_name) {
 						it = callbacks.erase(it);
 						return;
@@ -102,10 +93,8 @@ void EventManager::unsubscribe(const EventHandler<EventType> & callback,
 	} else {
 		auto handlers_it = this->subscribers.find(event_type);
 		if (handlers_it != this->subscribers.end()) {
-			std::vector<std::unique_ptr<IEventHandlerWrapper>> & handlers
-				= handlers_it->second;
-			for (auto it = handlers.begin();
-				 it != handlers.end(); ++it) {
+			HandlersVec & handlers = handlers_it->second;
+			for (auto it = handlers.begin(); it != handlers.end(); ++it) {
 				if ((*it)->get_type() == handler_name) {
 					it = handlers.erase(it);
 					return;
diff --git a/src/crepe/api/IKeyListener.cpp b/src/crepe/api/IKeyListener.cpp
index 4fd9855..81d30b8 100644
--- a/src/crepe/api/IKeyListener.cpp
+++ b/src/crepe/api/IKeyListener.cpp
@@ -2,50 +2,65 @@
 
 using namespace crepe;
 
-IKeyListener::IKeyListener() {
-	this->channel = channel;
-	this->subscribe_events();
+// Constructor with default channel
+IKeyListener::IKeyListener() : channel(0), active(true), event_manager(EventManager::get_instance()) {
+    this->subscribe_events();
 }
-IKeyListener::IKeyListener(int channel) {
-	this->channel = channel;
-	this->subscribe_events();
+
+// Constructor with specified channel
+IKeyListener::IKeyListener(int channel) : channel(channel), active(true), event_manager(EventManager::get_instance()) {
+    this->subscribe_events();
+}
+
+// Destructor, unsubscribe events
+IKeyListener::~IKeyListener() {
+    this->unsubscribe_events();
 }
-IKeyListener::~IKeyListener() { this->unsubscribe_events(); }
 
+// Subscribe to key events
 void IKeyListener::subscribe_events() {
-	key_pressed_handler = [this](const KeyPressEvent & event) {
-		return this->on_key_pressed(event);
-	};
-	key_released_handler = [this](const KeyReleaseEvent & event) {
-		return this->on_key_released(event);
-	};
-	EventManager::get_instance().subscribe<KeyPressEvent>(
-		std::move(this->key_pressed_handler), this->channel);
-	EventManager::get_instance().subscribe<KeyReleaseEvent>(
-		std::move(this->key_released_handler), this->channel);
+    key_pressed_handler = [this](const KeyPressEvent& event) {
+        return this->on_key_pressed(event);
+    };
+    key_released_handler = [this](const KeyReleaseEvent& event) {
+        return this->on_key_released(event);
+    };
+
+    event_manager.subscribe<KeyPressEvent>(
+        std::move(this->key_pressed_handler), this->channel);
+    event_manager.subscribe<KeyReleaseEvent>(
+        std::move(this->key_released_handler), this->channel);
 }
 
+// Unsubscribe from key events
 void IKeyListener::unsubscribe_events() {
-	EventManager::get_instance().unsubscribe<KeyPressEvent>(
-		this->key_pressed_handler, channel);
-	EventManager::get_instance().unsubscribe<KeyReleaseEvent>(
-		this->key_released_handler, channel);
-	std::cout << std::endl;
+    event_manager.unsubscribe<KeyPressEvent>(
+        this->key_pressed_handler, this->channel);
+    event_manager.unsubscribe<KeyReleaseEvent>(
+        this->key_released_handler, this->channel);
 }
+
+// Activate key listening
 void IKeyListener::activate_keys() {
-	if (this->active) {
-		return;
-	}
-	this->subscribe_events();
+    if (this->active) {
+        return;
+    }
+    this->active = true;
+    this->subscribe_events();
 }
+
+// Deactivate key listening
 void IKeyListener::deactivate_keys() {
-	if (!this->active) {
-		return;
-	}
-	this->unsubscribe_events();
+    if (!this->active) {
+        return;
+    }
+    this->active = false;
+    this->unsubscribe_events();
 }
+
+// Set a new channel for key events
 void IKeyListener::set_channel(int channel) {
-	this->unsubscribe_events();
-	this->channel = channel;
-	this->subscribe_events();
+    this->unsubscribe_events();
+    this->channel = channel;
+    this->subscribe_events();
 }
diff --git a/src/crepe/api/IKeyListener.h b/src/crepe/api/IKeyListener.h
index 5a2cafa..77fbf1e 100644
--- a/src/crepe/api/IKeyListener.h
+++ b/src/crepe/api/IKeyListener.h
@@ -1,9 +1,11 @@
 #pragma once
+
 #include "Event.h"
 #include "EventHandler.h"
 #include "EventManager.h"
 
 namespace crepe {
+	
 /**
  * \class IKeyListener
  * \brief Interface for keyboard event handling in the application.
@@ -76,6 +78,7 @@ private:
 	EventHandler<KeyPressEvent> key_pressed_handler;
 	//!< Key release event handler.
 	EventHandler<KeyReleaseEvent> key_released_handler;
+	EventManager& event_manager;
 };
 
 } // namespace crepe
diff --git a/src/crepe/api/IMouseListener.cpp b/src/crepe/api/IMouseListener.cpp
index 489e55b..f49004a 100644
--- a/src/crepe/api/IMouseListener.cpp
+++ b/src/crepe/api/IMouseListener.cpp
@@ -2,11 +2,19 @@
 
 using namespace crepe;
 
-IMouseListener::IMouseListener(int channel) { this->channel = channel; }
+IMouseListener::IMouseListener(int channel) 
+	: event_manager(EventManager::get_instance()), channel(channel) {
+	this->subscribe_events(); 
+}
 
-IMouseListener::IMouseListener() { this->subscribe_events(); }
+IMouseListener::IMouseListener() 
+	: event_manager(EventManager::get_instance()) {
+	this->subscribe_events(); 
+}
 
-IMouseListener::~IMouseListener() { this->unsubscribe_events(); }
+IMouseListener::~IMouseListener() { 
+	this->unsubscribe_events(); 
+}
 
 void IMouseListener::subscribe_events() {
 	// Define handler lambdas and subscribe them
@@ -22,25 +30,20 @@ void IMouseListener::subscribe_events() {
 	mouse_move_handler = [this](const MouseMoveEvent & event) {
 		return this->on_mouse_moved(event);
 	};
-	EventManager::get_instance().subscribe<MouseClickEvent>(
-		std::move(this->mouse_click_handler), this->channel);
-	EventManager::get_instance().subscribe<MousePressEvent>(
-		std::move(this->mouse_press_handler), this->channel);
-	EventManager::get_instance().subscribe<MouseReleaseEvent>(
-		std::move(this->mouse_release_handler), this->channel);
-	EventManager::get_instance().subscribe<MouseMoveEvent>(
-		std::move(this->mouse_move_handler), this->channel);
+
+	// Subscribe event handlers (no need for std::move)
+	event_manager.subscribe<MouseClickEvent>(std::move(mouse_click_handler), this->channel);
+	event_manager.subscribe<MousePressEvent>(std::move(mouse_press_handler), this->channel);
+	event_manager.subscribe<MouseReleaseEvent>(std::move(mouse_release_handler), this->channel);
+	event_manager.subscribe<MouseMoveEvent>(std::move(mouse_move_handler), this->channel);
 }
-// TODO: reference voor singleton
+
 void IMouseListener::unsubscribe_events() {
-	EventManager::get_instance().unsubscribe<MouseClickEvent>(
-		this->mouse_click_handler, this->channel);
-	EventManager::get_instance().unsubscribe<MousePressEvent>(
-		this->mouse_press_handler, this->channel);
-	EventManager::get_instance().unsubscribe<MouseReleaseEvent>(
-		this->mouse_release_handler, this->channel);
-	EventManager::get_instance().unsubscribe<MouseMoveEvent>(
-		this->mouse_move_handler, this->channel);
+	// Unsubscribe event handlers
+	event_manager.unsubscribe<MouseClickEvent>(mouse_click_handler, this->channel);
+	event_manager.unsubscribe<MousePressEvent>(mouse_press_handler, this->channel);
+	event_manager.unsubscribe<MouseReleaseEvent>(mouse_release_handler, this->channel);
+	event_manager.unsubscribe<MouseMoveEvent>(mouse_move_handler, this->channel);
 }
 
 void IMouseListener::activate_mouse() {
@@ -48,6 +51,7 @@ void IMouseListener::activate_mouse() {
 		return;
 	}
 	this->subscribe_events();
+	this->active = true;
 }
 
 void IMouseListener::deactivate_mouse() {
@@ -55,6 +59,7 @@ void IMouseListener::deactivate_mouse() {
 		return;
 	}
 	this->unsubscribe_events();
+	this->active = false;
 }
 
 void IMouseListener::set_channel(int channel) {
diff --git a/src/crepe/api/IMouseListener.h b/src/crepe/api/IMouseListener.h
index 1df55af..3b9e317 100644
--- a/src/crepe/api/IMouseListener.h
+++ b/src/crepe/api/IMouseListener.h
@@ -5,6 +5,7 @@
 #include "EventManager.h"
 
 namespace crepe {
+	
 /**
  * \class IMouseListener
  * \brief Interface for mouse event handling in the application.
@@ -115,6 +116,7 @@ private:
 	EventHandler<MouseReleaseEvent> mouse_release_handler;
 	//! Mouse move event handler.
 	EventHandler<MouseMoveEvent> mouse_move_handler;
+	EventManager& event_manager;
 };
 
 } //namespace crepe
diff --git a/src/crepe/api/KeyCodes.h b/src/crepe/api/KeyCodes.h
index e5a91fc..a326527 100644
--- a/src/crepe/api/KeyCodes.h
+++ b/src/crepe/api/KeyCodes.h
@@ -1,146 +1,186 @@
 #pragma once
 
+//! \file InputEnums.h
+//! \brief Defines enums for mouse buttons and keyboard keycodes used in the application.
+
+//! \enum MouseButton
+//! \brief Enumeration for mouse button inputs, including standard and extended buttons.
 enum class MouseButton {
-	NONE = 0,
-	LEFT_MOUSE = 1,
-	RIGHT_MOUSE = 2,
-	MIDDLE_MOUSE = 3,
-	X1_MOUSE = 4,
-	X2_MOUSE = 5,
-	SCROLL_UP = 6,
-	SCROLL_DOWN = 7,
+    //! No mouse button input.
+    NONE = 0,
+    //! Left mouse button.
+    LEFT_MOUSE = 1,
+    //! Right mouse button.
+    RIGHT_MOUSE = 2,
+    //! Middle mouse button (scroll wheel press).
+    MIDDLE_MOUSE = 3,
+    //! First extended mouse button.
+    X1_MOUSE = 4,
+    //! Second extended mouse button.
+    X2_MOUSE = 5,
+    //! Scroll wheel upward movement.
+    SCROLL_UP = 6,
+    //! Scroll wheel downward movement.
+    SCROLL_DOWN = 7
 };
 
+//! \enum Keycode
+//! \brief Enumeration for keyboard key inputs, including printable characters, function keys, and keypad keys.
 enum class Keycode : int {
-	NONE = 0,
-	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,
-
-	LEFT_BRACKET = 91, /* [ */
-	BACKSLASH = 92, /* \ */
-	RIGHT_BRACKET = 93, /* ] */
-	GRAVE_ACCENT = 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,
-	PAGE_UP = 266,
-	PAGE_DOWN = 267,
-	HOME = 268,
-	END = 269,
-	CAPS_LOCK = 280,
-	SCROLL_LOCK = 281,
-	NUM_LOCK = 282,
-	PRINT_SCREEN = 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,
-	KP_DECIMAL = 330,
-	KP_DIVIDE = 331,
-	KP_MULTIPLY = 332,
-	KP_SUBTRACT = 333,
-	KP_ADD = 334,
-	KP_ENTER = 335,
-	KP_EQUAL = 336,
-
-	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
+    //! No key input.
+    NONE = 0,
+    //! Spacebar.
+    SPACE = 32,
+    //! Apostrophe (').
+    APOSTROPHE = 39,
+    //! Comma (,).
+    COMMA = 44,
+    //! Minus (-).
+    MINUS = 45,
+    //! Period (.).
+    PERIOD = 46,
+    //! Slash (/).
+    SLASH = 47,
+    //! Digit 0.
+    D0 = 48,
+    //! Digit 1.
+    D1 = 49,
+    //! Digit 2.
+    D2 = 50,
+    //! Digit 3.
+    D3 = 51,
+    //! Digit 4.
+    D4 = 52,
+    //! Digit 5.
+    D5 = 53,
+    //! Digit 6.
+    D6 = 54,
+    //! Digit 7.
+    D7 = 55,
+    //! Digit 8.
+    D8 = 56,
+    //! Digit 9.
+    D9 = 57,
+    //! Semicolon (;).
+    SEMICOLON = 59,
+    //! Equal sign (=).
+    EQUAL = 61,
+    //! Key 'A'.
+    A = 65,
+    //! Key 'B'.
+    B = 66,
+    //! Key 'C'.
+    C = 67,
+    //! Key 'D'.
+    D = 68,
+    //! Key 'E'.
+    E = 69,
+    //! Key 'F'.
+    F = 70,
+    //! Key 'G'.
+    G = 71,
+    //! Key 'H'.
+    H = 72,
+    //! Key 'I'.
+    I = 73,
+    //! Key 'J'.
+    J = 74,
+    //! Key 'K'.
+    K = 75,
+    //! Key 'L'.
+    L = 76,
+    //! Key 'M'.
+    M = 77,
+    //! Key 'N'.
+    N = 78,
+    //! Key 'O'.
+    O = 79,
+    //! Key 'P'.
+    P = 80,
+    //! Key 'Q'.
+    Q = 81,
+    //! Key 'R'.
+    R = 82,
+    //! Key 'S'.
+    S = 83,
+    //! Key 'T'.
+    T = 84,
+    //! Key 'U'.
+    U = 85,
+    //! Key 'V'.
+    V = 86,
+    //! Key 'W'.
+    W = 87,
+    //! Key 'X'.
+    X = 88,
+    //! Key 'Y'.
+    Y = 89,
+    //! Key 'Z'.
+    Z = 90,
+    //! Left bracket ([).
+    LEFT_BRACKET = 91,
+    //! Backslash (\).
+    BACKSLASH = 92,
+    //! Right bracket (]).
+    RIGHT_BRACKET = 93,
+    //! Grave accent (`).
+    GRAVE_ACCENT = 96,
+    //! Non-US key #1.
+    WORLD1 = 161,
+    //! Non-US key #2.
+    WORLD2 = 162,
+    //! Escape key.
+    ESCAPE = 256,
+    //! Enter key.
+    ENTER = 257,
+    //! Tab key.
+    TAB = 258,
+    //! Backspace key.
+    BACKSPACE = 259,
+    //! Insert key.
+    INSERT = 260,
+    //! Delete key.
+    DELETE = 261,
+    //! Right arrow key.
+    RIGHT = 262,
+    //! Left arrow key.
+    LEFT = 263,
+    //! Down arrow key.
+    DOWN = 264,
+    //! Up arrow key.
+    UP = 265,
+    //! Page Up key.
+    PAGE_UP = 266,
+    //! Page Down key.
+    PAGE_DOWN = 267,
+    //! Home key.
+    HOME = 268,
+    //! End key.
+    END = 269,
+    //! Caps Lock key.
+    CAPS_LOCK = 280,
+    //! Scroll Lock key.
+    SCROLL_LOCK = 281,
+    //! Num Lock key.
+    NUM_LOCK = 282,
+    //! Print Screen key.
+    PRINT_SCREEN = 283,
+    //! Pause key.
+    PAUSE = 284,
+    //! 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,
+    //! 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,
+    //! 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 key.
+    MENU = 348
 };
diff --git a/src/example/events.cpp b/src/example/events.cpp
index ed519ff..5a0a748 100644
--- a/src/example/events.cpp
+++ b/src/example/events.cpp
@@ -89,11 +89,13 @@ int main() {
 
 		// Trigger the events while `testListener` is in scope
 		EventManager::get_instance().trigger_event<KeyPressEvent>(key_press, 1);
-		EventManager::get_instance().trigger_event(MouseClickEvent{
-    		.mouse_x = 100,
-    		.mouse_y = 100,
-    		.button = MouseButton::LEFT_MOUSE,
-			},1);
+		EventManager::get_instance().trigger_event(
+			MouseClickEvent{
+				.mouse_x = 100,
+				.mouse_y = 100,
+				.button = MouseButton::LEFT_MOUSE,
+			},
+			1);
 	}
 	// custom lambda event handler
 	EventHandler<KeyPressEvent> event_handler = [](const KeyPressEvent & e) {