Merge branch 'master' of https://github.com/lonkaars/crepe into wouter/gameloop

29 files changed, 588 insertions, 224 deletions

diff --git a/src/crepe/api/Animator.cpp b/src/crepe/api/Animator.cpp
index 45f67f6..b8a91dc 100644
--- a/src/crepe/api/Animator.cpp
+++ b/src/crepe/api/Animator.cpp
@@ -7,21 +7,53 @@
 
 using namespace crepe;
 
-Animator::Animator(game_object_id_t id, Sprite & ss, int row, int col, int col_animator)
+Animator::Animator(game_object_id_t id, Sprite & spritesheet, unsigned int max_row,
+				   unsigned int max_col, const Animator::Data & data)
 	: Component(id),
-	  spritesheet(ss),
-	  row(row),
-	  col(col) {
+	  spritesheet(spritesheet),
+	  max_rows(max_row),
+	  max_columns(max_col),
+	  data(data) {
 	dbg_trace();
 
-	this->spritesheet.mask.h /= col;
-	this->spritesheet.mask.w /= row;
-	this->spritesheet.mask.x = 0;
-	this->spritesheet.mask.y = col_animator * this->spritesheet.mask.h;
-	this->active = false;
+	this->spritesheet.mask.h /= this->max_columns;
+	this->spritesheet.mask.w /= this->max_rows;
+	this->spritesheet.mask.x = this->data.row * this->spritesheet.mask.w;
+	this->spritesheet.mask.y = this->data.col * this->spritesheet.mask.h;
 
 	// need to do this for to get the aspect ratio for a single clipping in the spritesheet
 	this->spritesheet.aspect_ratio
 		= static_cast<double>(this->spritesheet.mask.w) / this->spritesheet.mask.h;
 }
+
 Animator::~Animator() { dbg_trace(); }
+
+void Animator::loop() { this->data.looping = true; }
+
+void Animator::play() { this->active = true; }
+
+void Animator::pause() { this->active = false; }
+
+void Animator::stop() {
+	this->active = false;
+	this->data.col = 0;
+	this->data.row = 0;
+}
+void Animator::set_fps(int fps) { this->data.fps = fps; }
+
+void Animator::set_cycle_range(int start, int end) {
+	this->data.cycle_start = start, this->data.cycle_end = end;
+}
+
+void Animator::set_anim(int col) {
+	Animator::Data & ctx = this->data;
+	this->spritesheet.mask.x = ctx.row = 0;
+	ctx.col = col;
+	this->spritesheet.mask.y = ctx.col * this->spritesheet.mask.h;
+}
+
+void Animator::next_anim() {
+	Animator::Data & ctx = this->data;
+	ctx.row = ctx.row++ % this->max_rows;
+	this->spritesheet.mask.x = ctx.row * this->spritesheet.mask.w;
+}
diff --git a/src/crepe/api/Animator.h b/src/crepe/api/Animator.h
index 6c506aa..7c850b8 100644
--- a/src/crepe/api/Animator.h
+++ b/src/crepe/api/Animator.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include "../types.h"
+
 #include "Component.h"
 #include "Sprite.h"
 
@@ -16,56 +18,86 @@ class SDLContext;
  * sheet. It can be used to play animations, loop them, or stop them.
  */
 class Animator : public Component {
+public:
+	struct Data {
+		//! frames per second for animation
+		unsigned int fps = 1;
+		//! The current col being animated.
+		unsigned int col = 0;
+		//! The current row being animated.
+		unsigned int row = 0;
+		//! should the animation loop
+		bool looping = false;
+		//! starting frame for cycling
+		unsigned int cycle_start = 0;
+		//! end frame for cycling (-1 = use last frame)
+		int cycle_end = -1;
+	};
 
 public:
-	//TODO: need to implement this
+	//! Animator will repeat the animation
 	void loop();
+	//! starts the animation
+	void play();
+	//! pauses the animation
+	void pause();
+	/**
+	 * \brief stops the animation
+	 *
+	 * sets the active on false and resets all the current rows and columns
+	 */
 	void stop();
+	/**
+	 * \brief set frames per second
+	 *
+	 * \param fps frames per second
+	 */
+	void set_fps(int fps);
+	/**
+	 * \brief set the range in the row
+	 *
+	 * \param start of row animation
+	 * \param end of row animation
+	 */
+	void set_cycle_range(int start, int end);
+	/**
+	 * \brief select which column to animate from
+	 *
+	 * \param col animation column
+	 */
+	void set_anim(int col);
+	//! will go to the next animaiton of current row
+	void next_anim();
 
 public:
 	/**
 	 * \brief Constructs an Animator object that will control animations for a sprite sheet.
 	 *
 	 * \param id The unique identifier for the component, typically assigned automatically.
-	 * \param spritesheet A reference to the Sprite object which holds the sprite sheet for
-	 * animation.
-	 * \param row The maximum number of rows in the sprite sheet.
-	 * \param col The maximum number of columns in the sprite sheet.
-	 * \param col_animate The specific col index of the sprite sheet to animate. This allows
-	 * selecting which col to animate from multiple col in the sheet.
+	 * \param spritesheet the reference to the spritesheet
+	 * \param max_row maximum of rows inside the given spritesheet
+	 * \param max_col maximum of columns inside the given spritesheet
+	 * \param data extra animation data for more control
 	 *
 	 * This constructor sets up the Animator with the given parameters, and initializes the
 	 * animation system.
 	 */
-	Animator(uint32_t id, Sprite & spritesheet, int row, int col, int col_animate);
-
+	Animator(game_object_id_t id, Sprite & spritesheet, unsigned int max_row,
+			 unsigned int max_col, const Animator::Data & data);
 	~Animator(); // dbg_trace
 
-private:
-	//! A reference to the Sprite sheet containing the animation frames.
-	Sprite & spritesheet;
-
+public:
 	//! The maximum number of columns in the sprite sheet.
-	const int col;
-
+	const unsigned int max_columns;
 	//! The maximum number of rows in the sprite sheet.
-	const int row;
-
-	//! The current col being animated.
-	int curr_col = 0;
-
-	//! The current row being animated.
-	int curr_row = 0;
-
-	//TODO: Is this necessary?
-	//int fps;
+	const unsigned int max_rows;
+	Animator::Data data;
 
 private:
-	//! AnimatorSystem adjust the private member parameters of Animator;
-	friend class AnimatorSystem;
-
-	//! SDLContext reads the Animator member var's
-	friend class SDLContext;
+	//! A reference to the Sprite sheet containing.
+	Sprite & spritesheet;
+	//! Uses the spritesheet
+	friend AnimatorSystem;
 };
+
 } // namespace crepe
-//
diff --git a/src/crepe/api/AssetManager.h b/src/crepe/api/AssetManager.h
index fee6780..3b1cc4b 100644
--- a/src/crepe/api/AssetManager.h
+++ b/src/crepe/api/AssetManager.h
@@ -9,7 +9,7 @@ namespace crepe {
 
 /**
  * \brief The AssetManager is responsible for storing and managing assets over multiple scenes.
- * 
+ *
  * The AssetManager ensures that assets are loaded once and can be accessed across different
  * scenes. It caches assets to avoid reloading them every time a scene is loaded. Assets are
  * retained in memory until the AssetManager is destroyed, at which point the cached assets are
@@ -46,9 +46,9 @@ public:
 	 * \param reload If true, the asset will be reloaded from the file, even if it is already
 	 * cached.
 	 * \tparam T The type of asset to cache (e.g., texture, sound, etc.).
-	 * 
+	 *
 	 * \return A shared pointer to the cached asset.
-	 * 
+	 *
 	 * This template function caches the asset at the given file path. If the asset is already
 	 * cached and `reload` is false, the existing cached version will be returned. Otherwise, the
 	 * asset will be reloaded and added to the cache.
diff --git a/src/crepe/api/BoxCollider.cpp b/src/crepe/api/BoxCollider.cpp
new file mode 100644
index 0000000..c097a24
--- /dev/null
+++ b/src/crepe/api/BoxCollider.cpp
@@ -0,0 +1,10 @@
+#include "BoxCollider.h"
+
+#include "../Collider.h"
+
+using namespace crepe;
+
+BoxCollider::BoxCollider(game_object_id_t game_object_id, const vec2 & offset,
+						 const vec2 & dimensions)
+	: Collider(game_object_id, offset),
+	  dimensions(dimensions) {}
diff --git a/src/crepe/api/BoxCollider.h b/src/crepe/api/BoxCollider.h
new file mode 100644
index 0000000..1ac4d46
--- /dev/null
+++ b/src/crepe/api/BoxCollider.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "../Collider.h"
+#include "Vector2.h"
+#include "types.h"
+
+namespace crepe {
+
+/**
+ * \brief A class representing a box-shaped collider.
+ *
+ * This class is used for collision detection with other colliders (e.g., CircleCollider).
+ */
+class BoxCollider : public Collider {
+public:
+	BoxCollider(game_object_id_t game_object_id, const vec2 & offset, const vec2 & dimensions);
+
+	//! Width and height of the box collider
+	vec2 dimensions;
+};
+
+} // namespace crepe
diff --git a/src/crepe/api/Button.cpp b/src/crepe/api/Button.cpp
new file mode 100644
index 0000000..76f74f0
--- /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..61b18d7
--- /dev/null
+++ b/src/crepe/api/Button.h
@@ -0,0 +1,67 @@
+#pragma once
+
+#include <functional>
+
+#include "UIObject.h"
+
+namespace crepe {
+
+//! 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;
+	// TODO: create separate toggle button class
+	/**
+	 * \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;
+	//! Indicates whether the toggle button is pressed
+	bool is_pressed = false;
+	//! Indicates whether the mouse is currently hovering over the button
+	bool hover = false;
+
+public:
+};
+
+} // namespace crepe
diff --git a/src/crepe/api/CMakeLists.txt b/src/crepe/api/CMakeLists.txt
index 60d9dc5..ca4edec 100644
--- a/src/crepe/api/CMakeLists.txt
+++ b/src/crepe/api/CMakeLists.txt
@@ -13,10 +13,14 @@ target_sources(crepe PUBLIC
 	Metadata.cpp
 	Camera.cpp
 	Animator.cpp
+	BoxCollider.cpp
+	CircleCollider.cpp
 	LoopManager.cpp
 	Asset.cpp
 	EventHandler.cpp
 	Script.cpp
+	Button.cpp
+	UIObject.cpp
 )
 
 target_sources(crepe PUBLIC FILE_SET HEADERS FILES
@@ -32,16 +36,20 @@ target_sources(crepe PUBLIC FILE_SET HEADERS FILES
 	Vector2.h
 	Vector2.hpp
 	Color.h
-	Texture.h 
-	AssetManager.h 
+	Texture.h
+	AssetManager.h
 	AssetManager.hpp
 	Scene.h
 	Metadata.h
 	Camera.h
 	Animator.h
+	BoxCollider.h
+	CircleCollider.h
 	EventHandler.h
 	EventHandler.hpp
 	Event.h
 	LoopManager.h
 	Asset.h
+	Button.h
+	UIObject.h
 )
diff --git a/src/crepe/api/Camera.cpp b/src/crepe/api/Camera.cpp
index 39d8ab0..179dc18 100644
--- a/src/crepe/api/Camera.cpp
+++ b/src/crepe/api/Camera.cpp
@@ -1,20 +1,17 @@
-#include "types.h"
 #include "util/Log.h"
 
 #include "Camera.h"
-#include "Color.h"
 #include "Component.h"
+#include "types.h"
 
 using namespace crepe;
 
-Camera::Camera(game_object_id_t id, const Color & bg_color, const ivec2 & screen,
-			   const vec2 & viewport_size, const double & zoom, const vec2 & offset)
+Camera::Camera(game_object_id_t id, const ivec2 & screen, const vec2 & viewport_size,
+			   const Data & data)
 	: Component(id),
-	  bg_color(bg_color),
-	  offset(offset),
 	  screen(screen),
 	  viewport_size(viewport_size),
-	  zoom(zoom) {
+	  data(data) {
 	dbg_trace();
 }
 
diff --git a/src/crepe/api/Camera.h b/src/crepe/api/Camera.h
index 2d8fa48..54d9a73 100644
--- a/src/crepe/api/Camera.h
+++ b/src/crepe/api/Camera.h
@@ -14,23 +14,42 @@ namespace crepe {
  * position, and zoom level. It controls what part of the game world is visible on the screen.
  */
 class Camera : public Component {
+public:
+	struct Data {
+		/**
+		 * \bg_color background color of the game
+		 *
+		 * This will make the background the same color as the given value.
+		 */
+		const Color bg_color = Color::BLACK;
+
+		/**
+		 * \zoom Zooming level of the game
+		 *
+		 * zoom = 1 --> no zoom.
+		 * zoom < 1 --> zoom out
+		 * zoom > 1 --> zoom in
+		 */
+		double zoom = 1;
+
+		//! offset postion from the game object transform component
+		vec2 postion_offset;
+	};
 
 public:
 	/**
 	 * \brief Constructs a Camera with the specified ID and background color.
 	 * \param id Unique identifier for the camera component.
-	 * \param bg_color Background color for the camera view.
+	 * \param screen is the actual screen size in pixels
+	 * \param viewport_size is the view of the world in game units
+	 * \param data the camera component data
 	 */
-	Camera(game_object_id_t id, const Color & bg_color, const ivec2 & screen,
-		   const vec2 & viewport_size, const double & zoom, const vec2 & offset = {0, 0});
+	Camera(game_object_id_t id, const ivec2 & screen, const vec2 & viewport_size,
+		   const Camera::Data & data);
 	~Camera(); // dbg_trace only
 
 public:
-	//! Background color of the camera view.
-	const Color bg_color;
-
-	//! offset postion from the game object transform component
-	vec2 offset;
+	Camera::Data data;
 
 	//! screen the display size in pixels ( output resolution )
 	const ivec2 screen;
@@ -38,9 +57,6 @@ public:
 	//! viewport is the area of the world visible through the camera (in world units)
 	const vec2 viewport_size;
 
-	//! Zoom level of the camera view.
-	const double zoom;
-
 public:
 	/**
 	 * \brief Gets the maximum number of camera instances allowed.
diff --git a/src/crepe/api/CircleCollider.cpp b/src/crepe/api/CircleCollider.cpp
new file mode 100644
index 0000000..a4271e9
--- /dev/null
+++ b/src/crepe/api/CircleCollider.cpp
@@ -0,0 +1,8 @@
+#include "CircleCollider.h"
+
+using namespace crepe;
+
+CircleCollider::CircleCollider(game_object_id_t game_object_id, const vec2 & offset,
+							   float radius)
+	: Collider(game_object_id, offset),
+	  radius(radius) {}
diff --git a/src/crepe/api/CircleCollider.h b/src/crepe/api/CircleCollider.h
index e77a592..c7bf66e 100644
--- a/src/crepe/api/CircleCollider.h
+++ b/src/crepe/api/CircleCollider.h
@@ -1,14 +1,22 @@
 #pragma once
+
+#include "Vector2.h"
+
 #include "../Collider.h"
 
 namespace crepe {
 
+/**
+ * \brief A class representing a circle-shaped collider.
+ *
+ * This class is used for collision detection with other colliders (e.g., BoxCollider).
+ */
 class CircleCollider : public Collider {
 public:
-	CircleCollider(game_object_id_t game_object_id, int radius)
-		: Collider(game_object_id),
-		  radius(radius) {}
-	int radius;
+	CircleCollider(game_object_id_t game_object_id, const vec2 & offset, float radius);
+
+	//! Radius of the circle collider.
+	float radius;
 };
 
 } // namespace crepe
diff --git a/src/crepe/api/Config.h b/src/crepe/api/Config.h
index 225e9b9..a9745c3 100644
--- a/src/crepe/api/Config.h
+++ b/src/crepe/api/Config.h
@@ -1,8 +1,10 @@
 #pragma once
 
+#include <string>
+
 #include "../util/Log.h"
+
 #include "types.h"
-#include <string>
 
 namespace crepe {
 
@@ -66,10 +68,9 @@ public:
 
 	//! default window settings
 	struct {
-		//TODO make this constexpr because this will never change
-		ivec2 default_size = {1080, 720};
+		//! default screen size in pixels
+		ivec2 default_size = {1280, 720};
 		std::string window_title = "Jetpack joyride clone";
-
 	} window_settings;
 
 	//! Asset loading options
diff --git a/src/crepe/api/Event.h b/src/crepe/api/Event.h
index b267e3e..f2f3daf 100644
--- a/src/crepe/api/Event.h
+++ b/src/crepe/api/Event.h
@@ -88,12 +88,30 @@ 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 during a collision between objects.
+ * \brief Event triggered when the mouse is moved.
  */
-class CollisionEvent : public Event {};
+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 when text is submitted, e.g., from a text input.
diff --git a/src/crepe/api/EventHandler.h b/src/crepe/api/EventHandler.h
index ef659fd..7bb501b 100644
--- a/src/crepe/api/EventHandler.h
+++ b/src/crepe/api/EventHandler.h
@@ -8,12 +8,12 @@
 namespace crepe {
 /**
  * \brief A type alias for an event handler function.
- * 
- * The EventHandler is a std::function that takes an EventType reference and returns a boolean value 
+ *
+ * The EventHandler is a std::function that takes an EventType reference and returns a boolean value
  * indicating whether the event is handled.
- * 
+ *
  * \tparam EventType The type of event this handler will handle.
- * 
+ *
  * Returning \c false from an event handler results in the event being propogated to other listeners for the same event type, while returning \c true stops propogation altogether.
  */
 template <typename EventType>
@@ -22,70 +22,70 @@ using EventHandler = std::function<bool(const EventType & e)>;
 /**
  * \class IEventHandlerWrapper
  * \brief An abstract base class for event handler wrappers.
- * 
+ *
  * This class provides the interface for handling events. Derived classes must implement the
  * `call()` method to process events
  */
 class IEventHandlerWrapper {
 public:
 	/**
-     * \brief Virtual destructor for IEventHandlerWrapper.
-     */
+	 * \brief Virtual destructor for IEventHandlerWrapper.
+	 */
 	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.
-     * 
-     * \param e The event to be processed.
-     * \return A boolean value indicating whether the event is handled.
-     */
+	 * \brief Executes the handler with the given event.
+	 *
+	 * This method calls the `call()` method of the derived class, passing the event to the handler.
+	 *
+	 * \param e The event to be processed.
+	 * \return A boolean value indicating whether the event is handled.
+	 */
 	bool exec(const Event & e);
 
 private:
 	/**
-     * \brief The method responsible for handling the event.
-     * 
-     * This method is implemented by derived classes to process the event.
-     * 
-     * \param e The event to be processed.
-     * \return A boolean value indicating whether the event is handled.
-     */
+	 * \brief The method responsible for handling the event.
+	 *
+	 * This method is implemented by derived classes to process the event.
+	 *
+	 * \param e The event to be processed.
+	 * \return A boolean value indicating whether the event is handled.
+	 */
 	virtual bool call(const Event & e) = 0;
 };
 
 /**
  * \class EventHandlerWrapper
  * \brief A wrapper for event handler functions.
- * 
- * This class wraps an event handler function of a specific event type. It implements the 
- * `call()` and `get_type()` methods to allow the handler to be executed and its type to be 
+ *
+ * This class wraps an event handler function of a specific event type. It implements the
+ * `call()` and `get_type()` methods to allow the handler to be executed and its type to be
  * queried.
- * 
+ *
  * \tparam EventType The type of event this handler will handle.
  */
 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.
-     */
+	 * \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);
 
 private:
 	/**
-     * \brief Calls the stored event handler with the event.
-     * 
-     * This method casts the event to the appropriate type and calls the handler.
-     * 
-     * \param e The event to be handled.
-     * \return A boolean value indicating whether the event is handled.
-     */
+	 * \brief Calls the stored event handler with the event.
+	 *
+	 * This method casts the event to the appropriate type and calls the handler.
+	 *
+	 * \param e The event to be handled.
+	 * \return A boolean value indicating whether the event is handled.
+	 */
 	bool call(const Event & e) override;
 	//! The event handler function.
 	EventHandler<EventType> handler;
diff --git a/src/crepe/api/GameObject.h b/src/crepe/api/GameObject.h
index 4cd2bc0..ff80f49 100644
--- a/src/crepe/api/GameObject.h
+++ b/src/crepe/api/GameObject.h
@@ -10,7 +10,7 @@ class ComponentManager;
 
 /**
  * \brief Represents a GameObject
- * 
+ *
  * This class represents a GameObject. The GameObject class is only used as an interface for
  * the game programmer. The actual implementation is done in the ComponentManager.
  */
@@ -19,7 +19,7 @@ private:
 	/**
 	 * This constructor creates a new GameObject. It creates a new Transform and Metadata
 	 * component and adds them to the ComponentManager.
-	 * 
+	 *
 	 * \param component_manager Reference to component_manager
 	 * \param id The id of the GameObject
 	 * \param name The name of the GameObject
@@ -37,20 +37,20 @@ private:
 public:
 	/**
 	 * \brief Set the parent of this GameObject
-	 * 
+	 *
 	 * This method sets the parent of this GameObject. It sets the parent in the Metadata
 	 * component of this GameObject and adds this GameObject to the children list of the parent
 	 * GameObject.
-	 * 
+	 *
 	 * \param parent The parent GameObject
 	 */
 	void set_parent(const GameObject & parent);
 	/**
 	 * \brief Add a component to the GameObject
-	 * 
+	 *
 	 * This method adds a component to the GameObject. It forwards the arguments to the
 	 * ComponentManager.
-	 * 
+	 *
 	 * \tparam T The type of the component
 	 * \tparam Args The types of the arguments
 	 * \param args The arguments to create the component
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 42a1e77..c25e31e 100644
--- a/src/crepe/api/LoopManager.cpp
+++ b/src/crepe/api/LoopManager.cpp
@@ -3,10 +3,12 @@
 #include "../manager/EventManager.h"
 #include "../system/AnimatorSystem.h"
 #include "../system/CollisionSystem.h"
+#include "../system/InputSystem.h"
 #include "../system/ParticleSystem.h"
 #include "../system/PhysicsSystem.h"
 #include "../system/RenderSystem.h"
 #include "../system/ScriptSystem.h"
+#include "manager/EventManager.h"
 
 #include "LoopManager.h"
 
@@ -20,20 +22,27 @@ LoopManager::LoopManager() {
 	this->load_system<PhysicsSystem>();
 	this->load_system<RenderSystem>();
 	this->load_system<ScriptSystem>();
+	this->load_system<InputSystem>();
 	this->event_manager.subscribe<ShutDownEvent>(
 		[this](const ShutDownEvent & event) { return this->on_shutdown(event); });
 }
 
 void LoopManager::process_input() { 
-	
-	this->sdl_context.handle_events(this->game_running); }
+	this->get_system<InputSystem>().update();
+}
 
 void LoopManager::start() {
 	this->setup();
 	this->loop();
 }
 
-void LoopManager::fixed_update() {}
+void LoopManager::fixed_update() {
+	EventManager & ev = this->mediator.event_manager;
+	ev.dispatch_events();
+	this->get_system<ScriptSystem>().update();
+	this->get_system<PhysicsSystem>().update();
+	this->get_system<CollisionSystem>().update();
+}
 
 void LoopManager::loop() {
 	
@@ -55,14 +64,15 @@ void LoopManager::loop() {
 }
 
 void LoopManager::setup() {
-
 	this->game_running = true;
 	this->loop_timer.start();
+	this->scene_manager.load_next_scene();
 }
 
 void LoopManager::render() {
 	if (!this->game_running) return;
 
+	this->get_system<AnimatorSystem>().update();
 	this->get_system<RenderSystem>().update();
 }
 bool LoopManager::on_shutdown(const ShutDownEvent & e) {
diff --git a/src/crepe/api/LoopManager.h b/src/crepe/api/LoopManager.h
index d07ef66..9986aa5 100644
--- a/src/crepe/api/LoopManager.h
+++ b/src/crepe/api/LoopManager.h
@@ -8,6 +8,7 @@
 #include "../manager/EventManager.h"
 #include "../manager/LoopTimerManager.h"
 #include "../system/System.h"
+#include "../manager/Mediator.h"
 
 #include "api/Event.h"
 
@@ -98,7 +99,7 @@ private:
 	LoopTimerManager loop_timer{mediator};
 	//! EventManager instance
 	EventManager event_manager{mediator};
-	
+
 	//! SDL context \todo no more singletons!
 	SDLContext & sdl_context = SDLContext::get_instance();
 
diff --git a/src/crepe/api/Metadata.h b/src/crepe/api/Metadata.h
index 235d42f..f404703 100644
--- a/src/crepe/api/Metadata.h
+++ b/src/crepe/api/Metadata.h
@@ -9,7 +9,7 @@ namespace crepe {
 
 /**
  * \brief Metadata component
- * 
+ *
  * This class represents the Metadata component. It stores the name, tag, parent and children
  * of a GameObject.
  */
diff --git a/src/crepe/api/Rigidbody.cpp b/src/crepe/api/Rigidbody.cpp
index 576ca45..8213afb 100644
--- a/src/crepe/api/Rigidbody.cpp
+++ b/src/crepe/api/Rigidbody.cpp
@@ -10,6 +10,4 @@ void crepe::Rigidbody::add_force_linear(const vec2 & force) {
 	this->data.linear_velocity += force;
 }
 
-void crepe::Rigidbody::add_force_angular(double force) {
-	this->data.angular_velocity += force;
-}
+void crepe::Rigidbody::add_force_angular(float force) { this->data.angular_velocity += force; }
diff --git a/src/crepe/api/Rigidbody.h b/src/crepe/api/Rigidbody.h
index 3b0588f..40c6bf1 100644
--- a/src/crepe/api/Rigidbody.h
+++ b/src/crepe/api/Rigidbody.h
@@ -1,5 +1,8 @@
 #pragma once
 
+#include <cmath>
+#include <set>
+
 #include "../Component.h"
 
 #include "types.h"
@@ -8,7 +11,7 @@ namespace crepe {
 
 /**
  * \brief Rigidbody class
- * 
+ *
  * This class is used by the physics sytem and collision system. It configures how to system
  * interact with the gameobject for movement and collisions.
  */
@@ -16,7 +19,7 @@ class Rigidbody : public Component {
 public:
 	/**
 	 * \brief BodyType enum
-	 * 
+	 *
 	 * This enum provides three bodytypes the physics sytem and collision system use.
 	 */
 	enum class BodyType {
@@ -29,54 +32,118 @@ public:
 	};
 	/**
 	 * \brief PhysicsConstraints to constrain movement
-	 * 
+	 *
 	 * This struct configures the movement constraint for this object. If a constraint is enabled
 	 * the systems will not move the object.
 	 */
 	struct PhysicsConstraints {
-		//! X constraint
+		//! Prevent movement along X axis
 		bool x = false;
-		//! Y constraint
+		//! Prevent movement along Y axis
 		bool y = false;
-		//! rotation constraint
+		//! Prevent rotation
 		bool rotation = false;
 	};
 
 public:
-	/** 
+	/**
 	 * \brief struct for Rigidbody data
-	 * 
+	 *
 	 * This struct holds the data for the Rigidbody.
 	 */
 	struct Data {
 		//! objects mass
-		double mass = 0.0;
-		//! gravtiy scale
-		double gravity_scale = 0.0;
-		//! Changes if physics apply
+		float mass = 0.0;
+		/**
+		* \brief Gravity scale factor.
+		*
+		* The `gravity_scale` controls how much gravity affects the object. It is a multiplier applied to the default
+		* gravity force, allowing for fine-grained control over how the object responds to gravity.
+		*
+		*/
+		float gravity_scale = 0;
+
+		//! Defines the type of the physics body, which determines how the physics system interacts with the object.
 		BodyType body_type = BodyType::DYNAMIC;
-		//! linear velocity of object
+
+		/**
+		* \name Linear (positional) motion
+		*
+		* These variables define the linear motion (movement along the position) of an object.
+		* The linear velocity is applied to the object's position in each update of the PhysicsSystem.
+		* The motion is affected by the object's linear velocity, its maximum velocity, and a coefficient
+		* that can scale the velocity over time.
+		*
+		* \{
+		*/
+		//! Linear velocity of the object (speed and direction).
 		vec2 linear_velocity;
-		//! maximum linear velocity of object
-		vec2 max_linear_velocity;
-		//! linear damping of object
-		vec2 linear_damping;
-		//! angular velocity of object
-		double angular_velocity = 0.0;
-		//! max angular velocity of object
-		double max_angular_velocity = 0.0;
-		//! angular damping of object
-		double angular_damping = 0.0;
-		//! movements constraints of object
+		//! Maximum linear velocity of the object. This limits the object's speed.
+		vec2 max_linear_velocity = {INFINITY, INFINITY};
+		//! Linear velocity coefficient. This scales the object's velocity for adjustment or damping.
+		vec2 linear_velocity_coefficient = {1, 1};
+		//! \}
+
+		/**
+		* \name Angular (rotational) motion
+		*
+		* These variables define the angular motion (rotation) of an object.
+		* The angular velocity determines how quickly the object rotates, while the maximum angular velocity
+		* sets a limit on the rotation speed. The angular velocity coefficient applies damping or scaling
+		* to the angular velocity, which can be used to simulate friction or other effects that slow down rotation.
+		*
+		* \{
+		*/
+		//! Angular velocity of the object, representing the rate of rotation (in degrees).
+		float angular_velocity = 0;
+		//! Maximum angular velocity of the object. This limits the maximum rate of rotation.
+		float max_angular_velocity = INFINITY;
+		//! Angular velocity coefficient. This scales the object's angular velocity, typically used for damping.
+		float angular_velocity_coefficient = 1;
+		//! \}
+
+		/**
+		* \brief Movement constraints for an object.
+		*
+		* The `PhysicsConstraints` struct defines the constraints that restrict an object's movement
+		* in certain directions or prevent rotation. These constraints effect only the physics system
+		* to prevent the object from moving or rotating in specified ways.
+		*
+		*/
 		PhysicsConstraints constraints;
-		//! if gravity applies
-		bool use_gravity = true;
-		//! if object bounces
-		bool bounce = false;
+
+		/**
+		* \brief Elasticity factor of the material (bounce factor).
+		*
+		* The `elasticity_coefficient` controls how much of the object's velocity is retained after a collision.
+		* It represents the material's ability to bounce or recover velocity upon impact. The coefficient is a value
+		* above 0.0.
+		*
+		*/
+		float elastisity_coefficient = 0.0;
+
+		/**
+		* \brief Offset of all colliders relative to the object's transform position.
+		*
+		* The `offset` defines a positional shift applied to all colliders associated with the object, relative to the object's
+		* transform position. This allows for the colliders to be placed at a different position than the object's actual
+		* position, without modifying the object's transform itself.
+		*
+		*/
+		vec2 offset;
+
+		/**
+		 * \brief Defines the collision layers of a GameObject.
+		 *
+		 * The `collision_layers` specifies the layers that the GameObject will collide with.
+		 * Each element represents a layer ID, and the GameObject will only detect
+		 * collisions with other GameObjects that belong to these layers.
+		 */
+		std::set<int> collision_layers;
 	};
 
 public:
-	/** 
+	/**
 	 * \param game_object_id id of the gameobject the rigibody is added to.
 	 * \param data struct to configure the rigidbody.
 	 */
@@ -85,18 +152,27 @@ public:
 	Data data;
 
 public:
-	/** 
+	/**
 	 * \brief add a linear force to the Rigidbody.
-	 * 
+	 *
 	 * \param force Vector2 that is added to the linear force.
 	 */
 	void add_force_linear(const vec2 & force);
-	/** 
+	/**
 	 * \brief add a angular force to the Rigidbody.
-	 * 
+	 *
 	 * \param force Vector2 that is added to the angular force.
 	 */
-	void add_force_angular(double force);
+	void add_force_angular(float force);
+
+protected:
+	/**
+	* Ensures there is at most one Rigidbody component per entity.
+	* \return Always returns 1, indicating this constraint.
+	*/
+	virtual int get_instances_max() const { return 1; }
+	//! ComponentManager instantiates all components
+	friend class ComponentManager;
 };
 
 } // namespace crepe
diff --git a/src/crepe/api/Scene.h b/src/crepe/api/Scene.h
index 9f1e8ce..ba9bb76 100644
--- a/src/crepe/api/Scene.h
+++ b/src/crepe/api/Scene.h
@@ -12,7 +12,7 @@ class ComponentManager;
 
 /**
  * \brief Represents a Scene
- * 
+ *
  * This class represents a Scene. The Scene class is only used as an interface for the game
  * programmer.
  */
@@ -41,7 +41,7 @@ public:
 protected:
 	/**
 	 * \name Late references
-	 * 
+	 *
 	 * These references are set by SceneManager immediately after calling the constructor of Scene.
 	 *
 	 * \note Scene must have a constructor without arguments so the game programmer doesn't need to
diff --git a/src/crepe/api/Script.h b/src/crepe/api/Script.h
index 1b339b0..d99ab0e 100644
--- a/src/crepe/api/Script.h
+++ b/src/crepe/api/Script.h
@@ -4,6 +4,7 @@
 
 #include "../manager/EventManager.h"
 #include "../manager/Mediator.h"
+#include "../system/CollisionSystem.h"
 #include "../types.h"
 #include "../util/OptionalRef.h"
 
@@ -19,7 +20,7 @@ class ComponentManager;
  * This class is used as a base class for user-defined scripts that can be added to game
  * objects using the \c BehaviorScript component.
  *
- * \info Additional *events* (like Unity's OnDisable and OnEnable) should be implemented as
+ * \note Additional *events* (like Unity's OnDisable and OnEnable) should be implemented as
  * member or lambda methods in derivative user script classes and registered in \c init().
  *
  * \warning Concrete scripts are allowed do create a custom constructor, but the utility
diff --git a/src/crepe/api/Sprite.cpp b/src/crepe/api/Sprite.cpp
index 0a2ad4c..cc0e20a 100644
--- a/src/crepe/api/Sprite.cpp
+++ b/src/crepe/api/Sprite.cpp
@@ -6,24 +6,20 @@
 #include "Component.h"
 #include "Sprite.h"
 #include "Texture.h"
+#include "types.h"
 
 using namespace std;
 using namespace crepe;
 
-Sprite::Sprite(game_object_id_t id, Texture & image, const Color & color,
-			   const FlipSettings & flip, int sort_layer, int order_layer, int height)
+Sprite::Sprite(game_object_id_t id, Texture & texture, const Sprite::Data & data)
 	: Component(id),
-	  color(color),
-	  flip(flip),
-	  sprite_image(std::move(image)),
-	  sorting_in_layer(sort_layer),
-	  order_in_layer(order_layer),
-	  height(height) {
+	  texture(std::move(texture)),
+	  data(data) {
 
 	dbg_trace();
 
-	this->mask.w = sprite_image.get_size().x;
-	this->mask.h = sprite_image.get_size().y;
+	this->mask.w = this->texture.get_size().x;
+	this->mask.h = this->texture.get_size().y;
 	this->aspect_ratio = static_cast<double>(this->mask.w) / this->mask.h;
 }
 
diff --git a/src/crepe/api/Sprite.h b/src/crepe/api/Sprite.h
index a0e90a0..dbf41e4 100644
--- a/src/crepe/api/Sprite.h
+++ b/src/crepe/api/Sprite.h
@@ -1,11 +1,10 @@
 #pragma once
 
-#include <cstdint>
-
 #include "../Component.h"
 
 #include "Color.h"
 #include "Texture.h"
+#include "types.h"
 
 namespace crepe {
 
@@ -20,60 +19,79 @@ class AnimatorSystem;
  * flip settings, and is managed in layers with defined sorting orders.
  */
 class Sprite : public Component {
-
 public:
+	//! settings to flip the image
 	struct FlipSettings {
+		//! horizantal flip
 		bool flip_x = false;
+		//! vertical flip
 		bool flip_y = false;
 	};
 
+	//! Sprite data that does not have to be set in the constructor
+	struct Data {
+		/**
+		 * \brief Sprite tint (multiplied)
+		 *
+		 * The sprite texture's pixels are multiplied by this color before being displayed
+		 * (including alpha channel for transparency).
+		 */
+		Color color = Color::WHITE;
+
+		//! Flip settings for the sprite
+		FlipSettings flip;
+
+		//! Layer sorting level of the sprite
+		const int sorting_in_layer = 0;
+
+		//! Order within the sorting layer
+		const int order_in_layer = 0;
+
+		/**
+		 * \brief width and height of the sprite in game units
+		 *
+		 * - if exclusively width is specified, the height is calculated using the texture's aspect
+		 *   ratio
+		 * - if exclusively height is specified, the width is calculated using the texture's aspect
+		 *   ratio
+		 * - if both are specified the texture is streched to fit the specified size
+		 */
+		vec2 size = {0, 0};
+
+		//! independent sprite angle. rotating clockwise direction in degrees
+		float angle_offset = 0;
+
+		//! independent sprite scale multiplier
+		float scale_offset = 1;
+
+		//! independent sprite offset position
+		vec2 position_offset;
+	};
+
 public:
-	// TODO: Loek comment in github #27 will be looked another time
-	// about shared_ptr Texture
 	/**
-	 * \brief Constructs a Sprite with specified parameters.
 	 * \param game_id Unique identifier for the game object this sprite belongs to.
-	 * \param image Shared pointer to the texture for this sprite.
-	 * \param color Color tint applied to the sprite.
-	 * \param flip Flip settings for horizontal and vertical orientation.
-	 * \param order_layer decides the sorting in layer of the sprite.
-	 * \param sort_layer decides the order in layer of the sprite.
-	 * \param height the height of the image in game units
-	 */
-	Sprite(game_object_id_t id, Texture & image, const Color & color,
-		   const FlipSettings & flip, int sort_layer, int order_layer, int height);
-
-	/**
-	 * \brief Destroys the Sprite instance.
+	 * \param texture asset of the image
+	 * \param ctx all the sprite data
 	 */
+	Sprite(game_object_id_t id, Texture & texture, const Data & data);
 	~Sprite();
 
 	//! Texture used for the sprite
-	const Texture sprite_image;
-
-	//! Color tint of the sprite
-	Color color;
-
-	//! Flip settings for the sprite
-	FlipSettings flip;
+	const Texture texture;
 
-	//! Layer sorting level of the sprite
-	const int sorting_in_layer;
-	//! Order within the sorting layer
-	const int order_in_layer;
-
-	//! height in world units
-	const int height;
+	Data data;
 
+private:
 	/**
-	 * \aspect_ratio ratio of the img so that scaling will not become weird
+	 * \brief ratio of the img
 	 *
-	 * cannot be const because if Animator component is addded then ratio becomes scuffed and
-	 * does it need to be calculated again in the Animator
+	 * - This will multiply one of \c size variable if it is 0.
+	 * - Will be adjusted if \c Animator component is added to an GameObject that is why this
+	 *   value cannot be const.
 	 */
-	double aspect_ratio;
+	float aspect_ratio;
 
-private:
 	//! Reads the mask of sprite
 	friend class SDLContext;
 
diff --git a/src/crepe/api/Transform.h b/src/crepe/api/Transform.h
index 6243a93..7ee6d65 100644
--- a/src/crepe/api/Transform.h
+++ b/src/crepe/api/Transform.h
@@ -7,7 +7,7 @@ namespace crepe {
 
 /**
  * \brief Transform component
- * 
+ *
  * This class represents the Transform component. It stores the position, rotation and scale of
  * a GameObject.
  */
@@ -15,10 +15,10 @@ class Transform : public Component {
 public:
 	//! Translation (shift)
 	vec2 position = {0, 0};
-	//! Rotation, in degrees
-	double rotation = 0;
+	//! Rotation, in degrees clockwise
+	float rotation = 0;
 	//! Multiplication factor
-	double scale = 0;
+	float scale = 0;
 
 protected:
 	/**
diff --git a/src/crepe/api/UIObject.cpp b/src/crepe/api/UIObject.cpp
new file mode 100644
index 0000000..d239b89
--- /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..f7f4fba
--- /dev/null
+++ b/src/crepe/api/UIObject.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include "../Component.h"
+
+namespace crepe {
+
+/**
+ * \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