5 files changed, 217 insertions, 201 deletions

diff --git a/src/crepe/system/InputSystem.cpp b/src/crepe/system/InputSystem.cpp
index 7796b47..58720dd 100644
--- a/src/crepe/system/InputSystem.cpp
+++ b/src/crepe/system/InputSystem.cpp
@@ -1,7 +1,7 @@
 #include "../api/Button.h"
+#include "../facade/SDLContext.h"
 #include "../manager/ComponentManager.h"
 #include "../manager/EventManager.h"
-#include "facade/SDLContext.h"
 #include "util/Log.h"
 
 #include "InputSystem.h"
@@ -10,12 +10,13 @@ using namespace crepe;
 
 void InputSystem::fixed_update() {
 	ComponentManager & mgr = this->mediator.component_manager;
-	EventManager & event_mgr = this->mediator.event_manager;
+
 	SDLContext & context = this->mediator.sdl_context;
-	std::vector<SDLContext::EventData> event_list = context.get_events();
+	std::vector<EventData> event_list = context.get_events();
 	RefVector<Button> buttons = mgr.get_components_by_type<Button>();
 	RefVector<Camera> cameras = mgr.get_components_by_type<Camera>();
 	OptionalRef<Camera> curr_cam_ref;
+
 	// Find the active camera
 	for (Camera & cam : cameras) {
 		if (!cam.active) continue;
@@ -23,150 +24,185 @@ void InputSystem::fixed_update() {
 		break;
 	}
 	if (!curr_cam_ref) return;
+
 	Camera & current_cam = curr_cam_ref;
 	RefVector<Transform> transform_vec
 		= mgr.get_components_by_id<Transform>(current_cam.game_object_id);
 	Transform & cam_transform = transform_vec.front().get();
-	int camera_origin_x = cam_transform.position.x + current_cam.data.postion_offset.x
-						  - (current_cam.viewport_size.x / 2);
-	int camera_origin_y = cam_transform.position.y + current_cam.data.postion_offset.y
-						  - (current_cam.viewport_size.y / 2);
-
-	for (const SDLContext::EventData & event : event_list) {
-		int world_mouse_x = event.mouse_position.x + camera_origin_x;
-		int world_mouse_y = event.mouse_position.y + camera_origin_y;
-		// check if the mouse is within the viewport
-		bool mouse_in_viewport
-			= !(world_mouse_x < camera_origin_x
-				|| world_mouse_x > camera_origin_x + current_cam.viewport_size.x
-				|| world_mouse_y < camera_origin_y
-				|| world_mouse_y > camera_origin_y + current_cam.viewport_size.y);
-
-		switch (event.event_type) {
-			case SDLContext::EventType::KEYDOWN:
-				event_mgr.queue_event<KeyPressEvent>(KeyPressEvent{
-					.repeat = event.key_repeat,
-					.key = event.key,
-				});
-				break;
-			case SDLContext::EventType::KEYUP:
-				event_mgr.queue_event<KeyReleaseEvent>(KeyReleaseEvent{
-					.key = event.key,
-				});
-				break;
-			case SDLContext::EventType::MOUSEDOWN:
-				if (!mouse_in_viewport) {
-					break;
-				}
-				event_mgr.queue_event<MousePressEvent>(MousePressEvent{
-					.mouse_x = world_mouse_x,
-					.mouse_y = world_mouse_y,
-					.button = event.mouse_button,
-				});
-				this->last_mouse_down_position = {world_mouse_x, world_mouse_y};
-				this->last_mouse_button = event.mouse_button;
-				break;
-			case SDLContext::EventType::MOUSEUP: {
-				if (!mouse_in_viewport) {
-					break;
-				}
-				event_mgr.queue_event<MouseReleaseEvent>(MouseReleaseEvent{
-					.mouse_x = world_mouse_x,
-					.mouse_y = world_mouse_y,
-					.button = event.mouse_button,
-				});
-				//check if its a click by checking the last button down
-				int delta_x = world_mouse_x - this->last_mouse_down_position.x;
-				int delta_y = world_mouse_y - this->last_mouse_down_position.y;
-
-				if (this->last_mouse_button == event.mouse_button
-					&& std::abs(delta_x) <= click_tolerance
-					&& std::abs(delta_y) <= click_tolerance) {
-					event_mgr.queue_event<MouseClickEvent>(MouseClickEvent{
-						.mouse_x = world_mouse_x,
-						.mouse_y = world_mouse_y,
-						.button = event.mouse_button,
-					});
-
-					this->handle_click(event.mouse_button, world_mouse_x, world_mouse_y);
-				}
-			} break;
-			case SDLContext::EventType::MOUSEMOVE:
-				if (!mouse_in_viewport) {
-					break;
-				}
-				event_mgr.queue_event<MouseMoveEvent>(MouseMoveEvent{
-					.mouse_x = world_mouse_x,
-					.mouse_y = world_mouse_y,
-					.delta_x = event.rel_mouse_move.x,
-					.delta_y = event.rel_mouse_move.y,
-				});
-				this->handle_move(event, world_mouse_x, world_mouse_y);
-				break;
-			case SDLContext::EventType::MOUSEWHEEL:
-				event_mgr.queue_event<MouseScrollEvent>(MouseScrollEvent{
-					.mouse_x = world_mouse_x,
-					.mouse_y = world_mouse_y,
-					.scroll_direction = event.scroll_direction,
-					.scroll_delta = event.scroll_delta,
+
+	vec2 camera_origin = cam_transform.position + current_cam.data.postion_offset
+						 - (current_cam.viewport_size / 2);
+
+	for (const EventData & event : event_list) {
+		// Only calculate mouse coordinates for relevant events
+		if (event.event_type == EventType::MOUSE_DOWN
+			|| event.event_type == EventType::MOUSE_UP
+			|| event.event_type == EventType::MOUSE_MOVE
+			|| event.event_type == EventType::MOUSE_WHEEL) {
+			this->handle_mouse_event(event, camera_origin, current_cam);
+
+		} else {
+			this->handle_non_mouse_event(event);
+		}
+	}
+}
+
+void InputSystem::handle_mouse_event(const EventData & event, const vec2 & camera_origin,
+									 const Camera & current_cam) {
+	EventManager & event_mgr = this->mediator.event_manager;
+	vec2 adjusted_mouse;
+	adjusted_mouse.x = event.data.mouse_data.mouse_position.x + camera_origin.x;
+	adjusted_mouse.x = event.data.mouse_data.mouse_position.y + camera_origin.y;
+	// Check if the mouse is within the viewport
+	if ((adjusted_mouse.x < camera_origin.x
+		 || adjusted_mouse.x > camera_origin.x + current_cam.viewport_size.x
+		 || adjusted_mouse.y < camera_origin.y
+		 || adjusted_mouse.y > camera_origin.y + current_cam.viewport_size.y))
+		return;
+
+	// Handle mouse-specific events
+	switch (event.event_type) {
+		case EventType::MOUSE_DOWN:
+			event_mgr.queue_event<MousePressEvent>({
+				.mouse_pos = adjusted_mouse,
+				.button = event.data.mouse_data.mouse_button,
+			});
+			this->last_mouse_down_position = adjusted_mouse;
+			this->last_mouse_button = event.data.mouse_data.mouse_button;
+			break;
+
+		case EventType::MOUSE_UP: {
+			event_mgr.queue_event<MouseReleaseEvent>({
+				.mouse_pos = adjusted_mouse,
+				.button = event.data.mouse_data.mouse_button,
+			});
+			vec2 delta_move = adjusted_mouse - this->last_mouse_down_position;
+			int click_tolerance = Config::get_instance().input.click_tolerance;
+			if (this->last_mouse_button == event.data.mouse_data.mouse_button
+				&& std::abs(delta_move.x) <= click_tolerance
+				&& std::abs(delta_move.y) <= click_tolerance) {
+				event_mgr.queue_event<MouseClickEvent>({
+					.mouse_pos = adjusted_mouse,
+					.button = event.data.mouse_data.mouse_button,
 				});
-				break;
-			case SDLContext::EventType::SHUTDOWN:
-				event_mgr.queue_event<ShutDownEvent>(ShutDownEvent{});
-				break;
-			default:
-				break;
+				this->handle_click(event.data.mouse_data.mouse_button, adjusted_mouse);
+			}
+			break;
 		}
+
+		case EventType::MOUSE_MOVE:
+			event_mgr.queue_event<MouseMoveEvent>({
+				.mouse_pos = adjusted_mouse,
+				.mouse_delta = event.data.mouse_data.rel_mouse_move,
+			});
+			this->handle_move(event, adjusted_mouse);
+			break;
+
+		case EventType::MOUSE_WHEEL:
+			event_mgr.queue_event<MouseScrollEvent>({
+				.mouse_pos = adjusted_mouse,
+				.scroll_direction = event.data.mouse_data.scroll_direction,
+				.scroll_delta = event.data.mouse_data.scroll_delta,
+			});
+			break;
+
+		default:
+			break;
+	}
+}
+
+void InputSystem::handle_non_mouse_event(const EventData & event) {
+	EventManager & event_mgr = this->mediator.event_manager;
+	switch (event.event_type) {
+		case EventType::KEY_DOWN:
+
+			event_mgr.queue_event<KeyPressEvent>(
+				{.repeat = event.data.key_data.key_repeat, .key = event.data.key_data.key});
+			break;
+		case EventType::KEY_UP:
+			event_mgr.queue_event<KeyReleaseEvent>({.key = event.data.key_data.key});
+			break;
+		case EventType::SHUTDOWN:
+			event_mgr.queue_event<ShutDownEvent>({});
+			break;
+		case EventType::WINDOW_EXPOSE:
+			event_mgr.queue_event<WindowExposeEvent>({});
+			break;
+		case EventType::WINDOW_RESIZE:
+			event_mgr.queue_event<WindowResizeEvent>(
+				WindowResizeEvent{.dimensions = event.data.window_data.resize_dimension});
+			break;
+		case EventType::WINDOW_MOVE:
+			event_mgr.queue_event<WindowMoveEvent>(
+				{.delta_move = event.data.window_data.move_delta});
+			break;
+		case EventType::WINDOW_MINIMIZE:
+			event_mgr.queue_event<WindowMinimizeEvent>({});
+			break;
+		case EventType::WINDOW_MAXIMIZE:
+			event_mgr.queue_event<WindowMaximizeEvent>({});
+			break;
+		case EventType::WINDOW_FOCUS_GAIN:
+			event_mgr.queue_event<WindowFocusGainEvent>({});
+			break;
+		case EventType::WINDOW_FOCUS_LOST:
+			event_mgr.queue_event<WindowFocusLostEvent>({});
+			break;
+		default:
+			break;
 	}
 }
-void InputSystem::handle_move(const SDLContext::EventData & event_data,
-							  const int world_mouse_x, const int world_mouse_y) {
+
+void InputSystem::handle_move(const EventData & event_data, const vec2 & mouse_pos) {
 	ComponentManager & mgr = this->mediator.component_manager;
 
 	RefVector<Button> buttons = mgr.get_components_by_type<Button>();
 
 	for (Button & button : buttons) {
+		if (!button.active) continue;
 		RefVector<Transform> transform_vec
 			= mgr.get_components_by_id<Transform>(button.game_object_id);
 		Transform & transform(transform_vec.front().get());
 
 		bool was_hovering = button.hover;
-		if (button.active
-			&& this->is_mouse_inside_button(world_mouse_x, world_mouse_y, button, transform)) {
+		if (this->is_mouse_inside_button(mouse_pos, button, transform)) {
 			button.hover = true;
-			if (!was_hovering && button.on_mouse_enter) {
+			if (!button.on_mouse_enter) continue;
+			if (!was_hovering) {
 				button.on_mouse_enter();
 			}
 		} else {
 			button.hover = false;
 			// Trigger the on_exit callback if the hover state just changed to false
-			if (was_hovering && button.on_mouse_exit) {
+			if (!button.on_mouse_exit) continue;
+			if (was_hovering) {
 				button.on_mouse_exit();
 			}
 		}
 	}
 }
 
-void InputSystem::handle_click(const MouseButton & mouse_button, const int world_mouse_x,
-							   const int world_mouse_y) {
+void InputSystem::handle_click(const MouseButton & mouse_button, const vec2 & mouse_pos) {
 	ComponentManager & mgr = this->mediator.component_manager;
 
 	RefVector<Button> buttons = mgr.get_components_by_type<Button>();
 
 	for (Button & button : buttons) {
+		if (!button.active) continue;
+		if (!button.on_click) continue;
 		RefVector<Transform> transform_vec
 			= mgr.get_components_by_id<Transform>(button.game_object_id);
 		Transform & transform = transform_vec.front().get();
 
-		if (button.active
-			&& this->is_mouse_inside_button(world_mouse_x, world_mouse_y, button, transform)) {
-			this->handle_button_press(button);
+		if (this->is_mouse_inside_button(mouse_pos, button, transform)) {
+
+			button.on_click();
 		}
 	}
 }
 
-bool InputSystem::is_mouse_inside_button(const int mouse_x, const int mouse_y,
-										 const Button & button, const Transform & transform) {
+bool InputSystem::is_mouse_inside_button(const vec2 & mouse_pos, const Button & button,
+										 const Transform & transform) {
 	int actual_x = transform.position.x + button.offset.x;
 	int actual_y = transform.position.y + button.offset.y;
 
@@ -174,17 +210,6 @@ bool InputSystem::is_mouse_inside_button(const int mouse_x, const int mouse_y,
 	int half_height = button.dimensions.y / 2;
 
 	// Check if the mouse is within the button's boundaries
-	return mouse_x >= actual_x - half_width && mouse_x <= actual_x + half_width
-		   && mouse_y >= actual_y - half_height && mouse_y <= actual_y + half_height;
-}
-
-void InputSystem::handle_button_press(Button & button) {
-	if (button.is_toggle) {
-		if (!button.is_pressed && button.on_click) {
-			button.on_click();
-		}
-		button.is_pressed = !button.is_pressed;
-	} else if (button.on_click) {
-		button.on_click();
-	}
+	return mouse_pos.x >= actual_x - half_width && mouse_pos.x <= actual_x + half_width
+		   && mouse_pos.y >= actual_y - half_height && mouse_pos.y <= actual_y + half_height;
 }
diff --git a/src/crepe/system/InputSystem.h b/src/crepe/system/InputSystem.h
index 62b0fcd..9e7846c 100644
--- a/src/crepe/system/InputSystem.h
+++ b/src/crepe/system/InputSystem.h
@@ -1,6 +1,8 @@
 #pragma once
 
-#include "../facade/SDLContext.h"
+#include "../api/Config.h"
+#include "../facade/EventData.h"
+
 #include "../types.h"
 #include "../util/OptionalRef.h"
 
@@ -11,7 +13,6 @@ namespace crepe {
 class Camera;
 class Button;
 class Transform;
-
 /**
  * \brief Handles the processing of input events created by SDLContext
  *
@@ -31,15 +32,30 @@ public:
 
 private:
 	//! Stores the last position of the mouse when the button was pressed.
-	ivec2 last_mouse_down_position;
+	vec2 last_mouse_down_position;
 	// TODO: specify world/hud space and make regular `vec2`
 
 	//! Stores the last mouse button pressed.
 	MouseButton last_mouse_button = MouseButton::NONE;
-
-	//! The maximum allowable distance between mouse down and mouse up to register as a click.
-	const int click_tolerance = 5;
-
+	/**
+	 * \brief Handles mouse-related events.
+	 * \param event The event data for the mouse event.
+	 * \param camera_origin The origin position of the camera in world space.
+	 * \param current_cam The currently active camera.
+	 *
+	 * This method processes mouse events, adjusts the mouse position to world coordinates,
+	 * and triggers the appropriate mouse-specific event handling logic.
+	 */
+	void handle_mouse_event(const EventData & event, const vec2 & camera_origin,
+							const Camera & current_cam);
+	/**
+	 * \brief Handles non-mouse-related events.
+	 * \param event The event data for the non-mouse event.
+	 *
+	 * This method processes events that do not involve the mouse, such as keyboard events,
+	 * window events, and shutdown events, and triggers the corresponding event actions.
+	 */
+	void handle_non_mouse_event(const EventData & event);
 	/**
 	* \brief Handles the mouse click event.
 	* \param mouse_button The mouse button involved in the click.
@@ -48,8 +64,7 @@ private:
 	*
 	* This method processes the mouse click event and triggers the corresponding button action.
 	*/
-	void handle_click(const MouseButton & mouse_button, const int world_mouse_x,
-					  const int world_mouse_y);
+	void handle_click(const MouseButton & mouse_button, const vec2 & mouse_pos);
 
 	/**
 	* \brief Handles the mouse movement event.
@@ -59,8 +74,7 @@ private:
 	*
 	* This method processes the mouse movement event and updates the button hover state.
 	*/
-	void handle_move(const SDLContext::EventData & event_data, const int world_mouse_x,
-					 const int world_mouse_y);
+	void handle_move(const EventData & event_data, const vec2 & mouse_pos);
 
 	/**
 	* \brief Checks if the mouse position is inside the bounds of the button.
@@ -70,8 +84,8 @@ private:
 	* \param transform The transform component of the button.
 	* \return True if the mouse is inside the button, false otherwise.
 	*/
-	bool is_mouse_inside_button(const int world_mouse_x, const int world_mouse_y,
-								const Button & button, const Transform & transform);
+	bool is_mouse_inside_button(const vec2 & mouse_pos, const Button & button,
+								const Transform & transform);
 
 	/**
 	* \brief Handles the button press event, calling the on_click callback if necessary.
diff --git a/src/crepe/system/ParticleSystem.cpp b/src/crepe/system/ParticleSystem.cpp
index 5ccd128..bbc7366 100644
--- a/src/crepe/system/ParticleSystem.cpp
+++ b/src/crepe/system/ParticleSystem.cpp
@@ -1,3 +1,4 @@
+#include <chrono>
 #include <cmath>
 #include <cstdlib>
 #include <ctime>
@@ -5,14 +6,19 @@
 #include "../api/ParticleEmitter.h"
 #include "../api/Transform.h"
 #include "../manager/ComponentManager.h"
+#include "../manager/LoopTimerManager.h"
 
 #include "ParticleSystem.h"
 
 using namespace crepe;
 
-void ParticleSystem::frame_update() {
+void ParticleSystem::fixed_update() {
 	// Get all emitters
-	ComponentManager & mgr = this->mediator.component_manager;
+	const Mediator & mediator = this->mediator;
+	LoopTimerManager & loop_timer = mediator.loop_timer;
+	ComponentManager & mgr = mediator.component_manager;
+	float dt = loop_timer.get_scaled_fixed_delta_time().count();
+
 	RefVector<ParticleEmitter> emitters = mgr.get_components_by_type<ParticleEmitter>();
 
 	for (ParticleEmitter & emitter : emitters) {
@@ -21,38 +27,39 @@ void ParticleSystem::frame_update() {
 			= mgr.get_components_by_id<Transform>(emitter.game_object_id).front().get();
 
 		// Emit particles based on emission_rate
-		int updates = calculate_update(this->update_count, emitter.data.emission_rate);
-		for (size_t i = 0; i < updates; i++) {
-			emit_particle(emitter, transform);
+		emitter.spawn_accumulator += emitter.data.emission_rate * dt;
+		while (emitter.spawn_accumulator >= 1.0) {
+			this->emit_particle(emitter, transform);
+			emitter.spawn_accumulator -= 1.0;
 		}
 
 		// Update all particles
-		for (Particle & particle : emitter.data.particles) {
+		for (Particle & particle : emitter.particles) {
 			if (particle.active) {
-				particle.update();
+				particle.update(dt);
 			}
 		}
 
 		// Check if within boundary
-		check_bounds(emitter, transform);
+		this->check_bounds(emitter, transform);
 	}
-
-	this->update_count = (this->update_count + 1) % this->MAX_UPDATE_COUNT;
 }
 
 void ParticleSystem::emit_particle(ParticleEmitter & emitter, const Transform & transform) {
 	constexpr float DEG_TO_RAD = M_PI / 180.0;
 
-	vec2 initial_position = emitter.data.position + transform.position;
-	float random_angle = generate_random_angle(emitter.data.min_angle, emitter.data.max_angle);
+	vec2 initial_position = emitter.data.offset + transform.position;
+	float random_angle
+		= this->generate_random_angle(emitter.data.min_angle, emitter.data.max_angle);
 
-	float random_speed = generate_random_speed(emitter.data.min_speed, emitter.data.max_speed);
+	float random_speed
+		= this->generate_random_speed(emitter.data.min_speed, emitter.data.max_speed);
 	float angle_radians = random_angle * DEG_TO_RAD;
 
 	vec2 velocity
 		= {random_speed * std::cos(angle_radians), random_speed * std::sin(angle_radians)};
 
-	for (Particle & particle : emitter.data.particles) {
+	for (Particle & particle : emitter.particles) {
 		if (!particle.active) {
 			particle.reset(emitter.data.end_lifespan, initial_position, velocity,
 						   random_angle);
@@ -61,66 +68,54 @@ void ParticleSystem::emit_particle(ParticleEmitter & emitter, const Transform &
 	}
 }
 
-int ParticleSystem::calculate_update(int count, double emission) const {
-	double integer_part = std::floor(emission);
-	double fractional_part = emission - integer_part;
-
-	if (fractional_part > 0) {
-		int denominator = static_cast<int>(1.0 / fractional_part);
-		return (count % denominator == 0) ? 1 : 0;
-	}
-
-	return static_cast<int>(emission);
-}
-
 void ParticleSystem::check_bounds(ParticleEmitter & emitter, const Transform & transform) {
-	vec2 offset = emitter.data.boundary.offset + transform.position + emitter.data.position;
-	double half_width = emitter.data.boundary.width / 2.0;
-	double half_height = emitter.data.boundary.height / 2.0;
+	vec2 offset = emitter.data.boundary.offset + transform.position + emitter.data.offset;
+	float half_width = emitter.data.boundary.width / 2.0;
+	float half_height = emitter.data.boundary.height / 2.0;
 
-	const double LEFT = offset.x - half_width;
-	const double RIGHT = offset.x + half_width;
-	const double TOP = offset.y - half_height;
-	const double BOTTOM = offset.y + half_height;
+	float left = offset.x - half_width;
+	float right = offset.x + half_width;
+	float top = offset.y - half_height;
+	float bottom = offset.y + half_height;
 
-	for (Particle & particle : emitter.data.particles) {
+	for (Particle & particle : emitter.particles) {
 		const vec2 & position = particle.position;
-		bool within_bounds = (position.x >= LEFT && position.x <= RIGHT && position.y >= TOP
-							  && position.y <= BOTTOM);
-
+		bool within_bounds = (position.x >= left && position.x <= right && position.y >= top
+							  && position.y <= bottom);
+		//if not within bounds do a reset or stop velocity
 		if (!within_bounds) {
 			if (emitter.data.boundary.reset_on_exit) {
 				particle.active = false;
 			} else {
 				particle.velocity = {0, 0};
-				if (position.x < LEFT) particle.position.x = LEFT;
-				else if (position.x > RIGHT) particle.position.x = RIGHT;
-				if (position.y < TOP) particle.position.y = TOP;
-				else if (position.y > BOTTOM) particle.position.y = BOTTOM;
+				if (position.x < left) particle.position.x = left;
+				else if (position.x > right) particle.position.x = right;
+				if (position.y < top) particle.position.y = top;
+				else if (position.y > bottom) particle.position.y = bottom;
 			}
 		}
 	}
 }
 
-double ParticleSystem::generate_random_angle(double min_angle, double max_angle) const {
+float ParticleSystem::generate_random_angle(float min_angle, float max_angle) const {
 	if (min_angle == max_angle) {
 		return min_angle;
 	} else if (min_angle < max_angle) {
 		return min_angle
-			   + static_cast<double>(std::rand() % static_cast<int>(max_angle - min_angle));
+			   + static_cast<float>(std::rand() % static_cast<int>(max_angle - min_angle));
 	} else {
-		double angle_offset = (360 - min_angle) + max_angle;
-		double random_angle
-			= min_angle + static_cast<double>(std::rand() % static_cast<int>(angle_offset));
+		float angle_offset = (360 - min_angle) + max_angle;
+		float random_angle
+			= min_angle + static_cast<float>(std::rand() % static_cast<int>(angle_offset));
 		return (random_angle >= 360) ? random_angle - 360 : random_angle;
 	}
 }
 
-double ParticleSystem::generate_random_speed(double min_speed, double max_speed) const {
+float ParticleSystem::generate_random_speed(float min_speed, float max_speed) const {
 	if (min_speed == max_speed) {
 		return min_speed;
 	} else {
 		return min_speed
-			   + static_cast<double>(std::rand() % static_cast<int>(max_speed - min_speed));
+			   + static_cast<float>(std::rand() % static_cast<int>(max_speed - min_speed));
 	}
 }
diff --git a/src/crepe/system/ParticleSystem.h b/src/crepe/system/ParticleSystem.h
index 6c631ea..4296ff3 100644
--- a/src/crepe/system/ParticleSystem.h
+++ b/src/crepe/system/ParticleSystem.h
@@ -20,7 +20,7 @@ public:
 	 * \brief Updates all particle emitters by emitting particles, updating particle states, and
 	 * checking bounds.
 	 */
-	void frame_update() override;
+	void fixed_update() override;
 
 private:
 	/**
@@ -32,16 +32,6 @@ private:
 	void emit_particle(ParticleEmitter & emitter, const Transform & transform);
 
 	/**
-	 * \brief Calculates the number of times particles should be emitted based on emission rate
-	 * and update count.
-	 *
-	 * \param count Current update count.
-	 * \param emission Emission rate.
-	 * \return The number of particles to emit.
-	 */
-	int calculate_update(int count, double emission) const;
-
-	/**
 	 * \brief Checks whether particles are within the emitter’s boundary, resets or stops
 	 * particles if they exit.
 	 *
@@ -57,7 +47,7 @@ private:
 	 * \param max_angle Maximum emission angle in degrees.
 	 * \return Random angle in degrees.
 	 */
-	double generate_random_angle(double min_angle, double max_angle) const;
+	float generate_random_angle(float min_angle, float max_angle) const;
 
 	/**
 	 * \brief Generates a random speed for particle emission within the specified range.
@@ -66,15 +56,7 @@ private:
 	 * \param max_speed Maximum emission speed.
 	 * \return Random speed.
 	 */
-	double generate_random_speed(double min_speed, double max_speed) const;
-
-private:
-	//! Counter to count updates to determine how many times emit_particle is
-	// called.
-	unsigned int update_count = 0;
-	//! Determines the lowest amount of emission rate (1000 = 0.001 = 1 particle per 1000
-	// updates).
-	static constexpr unsigned int MAX_UPDATE_COUNT = 100;
+	float generate_random_speed(float min_speed, float max_speed) const;
 };
 
 } // namespace crepe
diff --git a/src/crepe/system/RenderSystem.cpp b/src/crepe/system/RenderSystem.cpp
index 607bbab..c403f6c 100644
--- a/src/crepe/system/RenderSystem.cpp
+++ b/src/crepe/system/RenderSystem.cpp
@@ -83,11 +83,11 @@ bool RenderSystem::render_particle(const Sprite & sprite, const double & scale)
 	bool rendering_particles = false;
 
 	for (const ParticleEmitter & em : emitters) {
-		if (&em.data.sprite != &sprite) continue;
+		if (&em.sprite != &sprite) continue;
 		rendering_particles = true;
 		if (!em.active) continue;
 
-		for (const Particle & p : em.data.particles) {
+		for (const Particle & p : em.particles) {
 			if (!p.active) continue;
 
 			ctx.draw(SDLContext::RenderContext{