16 files changed, 571 insertions, 161 deletions

diff --git a/src/crepe/system/AISystem.cpp b/src/crepe/system/AISystem.cpp
new file mode 100644
index 0000000..680dbb8
--- /dev/null
+++ b/src/crepe/system/AISystem.cpp
@@ -0,0 +1,186 @@
+#include <algorithm>
+#include <cmath>
+
+#include "manager/ComponentManager.h"
+#include "manager/LoopTimerManager.h"
+#include "manager/Mediator.h"
+
+#include "AISystem.h"
+
+using namespace crepe;
+using namespace std::chrono;
+
+void AISystem::update() {
+	const Mediator & mediator = this->mediator;
+	ComponentManager & mgr = mediator.component_manager;
+	LoopTimerManager & loop_timer = mediator.loop_timer;
+	RefVector<AI> ai_components = mgr.get_components_by_type<AI>();
+
+	float dt = loop_timer.get_scaled_fixed_delta_time().count();
+
+	// Loop through all AI components
+	for (AI & ai : ai_components) {
+		if (!ai.active) {
+			continue;
+		}
+
+		RefVector<Rigidbody> rigidbodies
+			= mgr.get_components_by_id<Rigidbody>(ai.game_object_id);
+		if (rigidbodies.empty()) {
+			throw std::runtime_error(
+				"AI component must be attached to a GameObject with a Rigidbody component");
+		}
+		Rigidbody & rigidbody = rigidbodies.front().get();
+		if (!rigidbody.active) {
+			continue;
+		}
+		if (rigidbody.data.mass <= 0) {
+			throw std::runtime_error("Mass must be greater than 0");
+		}
+
+		// Calculate the force to apply to the entity
+		vec2 force = this->calculate(ai, rigidbody);
+		// Calculate the acceleration (using the above calculated force)
+		vec2 acceleration = force / rigidbody.data.mass;
+		// Finally, update Rigidbody's velocity
+		rigidbody.data.linear_velocity += acceleration * dt;
+	}
+}
+
+vec2 AISystem::calculate(AI & ai, const Rigidbody & rigidbody) {
+	const Mediator & mediator = this->mediator;
+	ComponentManager & mgr = mediator.component_manager;
+	RefVector<Transform> transforms = mgr.get_components_by_id<Transform>(ai.game_object_id);
+	Transform & transform = transforms.front().get();
+
+	vec2 force;
+
+	// Run all the behaviors that are on, and stop if the force gets too high
+	if (ai.on(AI::BehaviorTypeMask::FLEE)) {
+		vec2 force_to_add = this->flee(ai, rigidbody, transform);
+
+		if (!this->accumulate_force(ai, force, force_to_add)) {
+			return force;
+		}
+	}
+	if (ai.on(AI::BehaviorTypeMask::ARRIVE)) {
+		vec2 force_to_add = this->arrive(ai, rigidbody, transform);
+
+		if (!this->accumulate_force(ai, force, force_to_add)) {
+			return force;
+		}
+	}
+	if (ai.on(AI::BehaviorTypeMask::SEEK)) {
+		vec2 force_to_add = this->seek(ai, rigidbody, transform);
+
+		if (!this->accumulate_force(ai, force, force_to_add)) {
+			return force;
+		}
+	}
+	if (ai.on(AI::BehaviorTypeMask::PATH_FOLLOW)) {
+		vec2 force_to_add = this->path_follow(ai, rigidbody, transform);
+
+		if (!this->accumulate_force(ai, force, force_to_add)) {
+			return force;
+		}
+	}
+
+	return force;
+}
+
+bool AISystem::accumulate_force(const AI & ai, vec2 & running_total, vec2 & force_to_add) {
+	float magnitude = running_total.length();
+	float magnitude_remaining = ai.max_force - magnitude;
+
+	if (magnitude_remaining <= 0.0f) {
+		// If the force is already at/above the max force, return false
+		return false;
+	}
+
+	float magnitude_to_add = force_to_add.length();
+	if (magnitude_to_add < magnitude_remaining) {
+		// If the force to add is less than the remaining force, add it
+		running_total += force_to_add;
+	} else {
+		// If the force to add is greater than the remaining force, add a fraction of it
+		force_to_add.normalize();
+		running_total += force_to_add * magnitude_remaining;
+	}
+
+	return true;
+}
+
+vec2 AISystem::seek(const AI & ai, const Rigidbody & rigidbody,
+					const Transform & transform) const {
+	// Calculate the desired velocity
+	vec2 desired_velocity = ai.seek_target - transform.position;
+	desired_velocity.normalize();
+	desired_velocity *= rigidbody.data.max_linear_velocity;
+
+	return desired_velocity - rigidbody.data.linear_velocity;
+}
+
+vec2 AISystem::flee(const AI & ai, const Rigidbody & rigidbody,
+					const Transform & transform) const {
+	// Calculate the desired velocity if the entity is within the panic distance
+	vec2 desired_velocity = transform.position - ai.flee_target;
+	if (desired_velocity.length_squared() > ai.square_flee_panic_distance) {
+		return vec2{0, 0};
+	}
+	desired_velocity.normalize();
+	desired_velocity *= rigidbody.data.max_linear_velocity;
+
+	return desired_velocity - rigidbody.data.linear_velocity;
+}
+
+vec2 AISystem::arrive(const AI & ai, const Rigidbody & rigidbody,
+					  const Transform & transform) const {
+	// Calculate the desired velocity (taking into account the deceleration rate)
+	vec2 to_target = ai.arrive_target - transform.position;
+	float distance = to_target.length();
+	if (distance > 0.0f) {
+		if (ai.arrive_deceleration <= 0.0f) {
+			throw std::runtime_error("Deceleration rate must be greater than 0");
+		}
+
+		float speed = distance / ai.arrive_deceleration;
+		speed = std::min(speed, rigidbody.data.max_linear_velocity);
+		vec2 desired_velocity = to_target * (speed / distance);
+
+		return desired_velocity - rigidbody.data.linear_velocity;
+	}
+
+	return vec2{0, 0};
+}
+
+vec2 AISystem::path_follow(AI & ai, const Rigidbody & rigidbody, const Transform & transform) {
+	if (ai.path.empty()) {
+		return vec2{0, 0};
+	}
+
+	// Get the target node
+	vec2 target = ai.path.at(ai.path_index);
+	// Calculate the force to apply to the entity
+	vec2 to_target = target - transform.position;
+	if (to_target.length_squared() > ai.path_node_distance * ai.path_node_distance) {
+		// If the entity is not close enough to the target node, seek it
+		ai.seek_target = target;
+		ai.arrive_target = target;
+	} else {
+		// If the entity is close enough to the target node, move to the next node
+		ai.path_index++;
+		if (ai.path_index >= ai.path.size()) {
+			if (ai.path_loop) {
+				// If the path is looping, reset the path index
+				ai.path_index = 0;
+			} else {
+				// If the path is not looping, arrive at the last node
+				ai.path_index = ai.path.size() - 1;
+				return this->arrive(ai, rigidbody, transform);
+			}
+		}
+	}
+
+	// Seek the target node
+	return this->seek(ai, rigidbody, transform);
+}
diff --git a/src/crepe/system/AISystem.h b/src/crepe/system/AISystem.h
new file mode 100644
index 0000000..d5f8a8e
--- /dev/null
+++ b/src/crepe/system/AISystem.h
@@ -0,0 +1,81 @@
+#pragma once
+
+#include "api/AI.h"
+#include "api/Rigidbody.h"
+
+#include "System.h"
+#include "api/Transform.h"
+#include "types.h"
+
+namespace crepe {
+
+/**
+ * \brief The AISystem is used to control the movement of entities using AI.
+ *
+ * The AISystem is used to control the movement of entities using AI. The AISystem can be used to
+ * implement different behaviors such as seeking, fleeing, arriving, and path following.
+ */
+class AISystem : public System {
+public:
+	using System::System;
+
+	//! Update the AI system
+	void update() override;
+
+private:
+	/**
+	 * \brief Calculate the total force to apply to the entity
+	 *
+	 * \param ai The AI component
+	 * \param rigidbody The Rigidbody component
+	 */
+	vec2 calculate(AI & ai, const Rigidbody & rigidbody);
+	/**
+	 * \brief Accumulate the force to apply to the entity
+	 *
+	 * \param ai The AI component
+	 * \param running_total The running total of the force
+	 * \param force_to_add The force to add
+	 * \return true if the force was added, false otherwise
+	 */
+	bool accumulate_force(const AI & ai, vec2 & running_total, vec2 & force_to_add);
+
+	/**
+	 * \brief Calculate the seek force
+	 *
+	 * \param ai The AI component
+	 * \param rigidbody The Rigidbody component
+	 * \param transform The Transform component
+	 * \return The seek force
+	 */
+	vec2 seek(const AI & ai, const Rigidbody & rigidbody, const Transform & transform) const;
+	/**
+	 * \brief Calculate the flee force
+	 *
+	 * \param ai The AI component
+	 * \param rigidbody The Rigidbody component
+	 * \param transform The Transform component
+	 * \return The flee force
+	 */
+	vec2 flee(const AI & ai, const Rigidbody & rigidbody, const Transform & transform) const;
+	/**
+	 * \brief Calculate the arrive force
+	 *
+	 * \param ai The AI component
+	 * \param rigidbody The Rigidbody component
+	 * \param transform The Transform component
+	 * \return The arrive force
+	 */
+	vec2 arrive(const AI & ai, const Rigidbody & rigidbody, const Transform & transform) const;
+	/**
+	 * \brief Calculate the path follow force
+	 *
+	 * \param ai The AI component
+	 * \param rigidbody The Rigidbody component
+	 * \param transform The Transform component
+	 * \return The path follow force
+	 */
+	vec2 path_follow(AI & ai, const Rigidbody & rigidbody, const Transform & transform);
+};
+
+} // namespace crepe
diff --git a/src/crepe/system/AnimatorSystem.cpp b/src/crepe/system/AnimatorSystem.cpp
index 8bb6465..107b25d 100644
--- a/src/crepe/system/AnimatorSystem.cpp
+++ b/src/crepe/system/AnimatorSystem.cpp
@@ -1,24 +1,42 @@
-#include <cstdint>
+
 
 #include "../api/Animator.h"
-#include "../facade/SDLContext.h"
 #include "../manager/ComponentManager.h"
+#include "../manager/LoopTimerManager.h"
+#include <chrono>
 
 #include "AnimatorSystem.h"
 
 using namespace crepe;
+using namespace std::chrono;
 
 void AnimatorSystem::update() {
 	ComponentManager & mgr = this->mediator.component_manager;
-
+	LoopTimerManager & timer = this->mediator.loop_timer;
 	RefVector<Animator> animations = mgr.get_components_by_type<Animator>();
 
-	uint64_t tick = SDLContext::get_instance().get_ticks();
+	float elapsed_time = duration_cast<duration<float>>(timer.get_elapsed_time()).count();
+
 	for (Animator & a : animations) {
 		if (!a.active) continue;
-		// (10 frames per second)
-		a.curr_row = (tick / 100) % a.row;
-		a.spritesheet.mask.x = (a.curr_row * a.spritesheet.mask.w) + a.curr_col;
-		a.spritesheet.mask = a.spritesheet.mask;
+		if (a.data.fps == 0) continue;
+
+		Animator::Data & ctx = a.data;
+		float frame_duration = 1.0f / ctx.fps;
+
+		int last_frame = ctx.row;
+
+		int cycle_end = (ctx.cycle_end == -1) ? a.grid_size.x : ctx.cycle_end;
+		int total_frames = cycle_end - ctx.cycle_start;
+
+		int curr_frame = static_cast<int>(elapsed_time / frame_duration) % total_frames;
+
+		ctx.row = ctx.cycle_start + curr_frame;
+		a.spritesheet.mask.x = ctx.row * a.spritesheet.mask.w;
+		a.spritesheet.mask.y = (ctx.col * a.spritesheet.mask.h);
+
+		if (!ctx.looping && curr_frame == ctx.cycle_start && last_frame == total_frames - 1) {
+			a.active = false;
+		}
 	}
 }
diff --git a/src/crepe/system/AnimatorSystem.h b/src/crepe/system/AnimatorSystem.h
index f8179a9..7d3f565 100644
--- a/src/crepe/system/AnimatorSystem.h
+++ b/src/crepe/system/AnimatorSystem.h
@@ -2,9 +2,6 @@
 
 #include "System.h"
 
-//TODO:
-// control if flip works with animation system
-
 namespace crepe {
 
 /**
diff --git a/src/crepe/system/AudioSystem.cpp b/src/crepe/system/AudioSystem.cpp
new file mode 100644
index 0000000..b1aa0f8
--- /dev/null
+++ b/src/crepe/system/AudioSystem.cpp
@@ -0,0 +1,62 @@
+#include "AudioSystem.h"
+
+#include "../manager/ComponentManager.h"
+#include "../manager/ResourceManager.h"
+#include "../types.h"
+
+using namespace crepe;
+using namespace std;
+
+void AudioSystem::update() {
+	ComponentManager & component_manager = this->mediator.component_manager;
+	ResourceManager & resource_manager = this->mediator.resource_manager;
+	RefVector<AudioSource> components
+		= component_manager.get_components_by_type<AudioSource>();
+
+	for (AudioSource & component : components) {
+		Sound & resource = resource_manager.get<Sound>(component.source);
+
+		this->diff_update(component, resource);
+
+		this->update_last(component);
+	}
+}
+
+void AudioSystem::diff_update(AudioSource & component, Sound & resource) {
+	SoundContext & context = this->get_context();
+
+	if (component.active != component.last_active) {
+		if (!component.active) {
+			context.stop(component.voice);
+			return;
+		}
+		if (component.play_on_awake) component.oneshot_play = true;
+	}
+	if (!component.active) return;
+
+	if (component.oneshot_play) {
+		component.voice = context.play(resource);
+		component.oneshot_play = false;
+	}
+	if (component.oneshot_stop) {
+		context.stop(component.voice);
+		component.oneshot_stop = false;
+	}
+	if (component.volume != component.last_volume) {
+		context.set_volume(component.voice, component.volume);
+	}
+	if (component.loop != component.last_loop) {
+		context.set_loop(component.voice, component.loop);
+	}
+}
+
+void AudioSystem::update_last(AudioSource & component) {
+	component.last_active = component.active;
+	component.last_loop = component.loop;
+	component.last_volume = component.volume;
+}
+
+SoundContext & AudioSystem::get_context() {
+	if (this->context == nullptr) this->context = make_unique<SoundContext>();
+	return *this->context.get();
+}
diff --git a/src/crepe/system/AudioSystem.h b/src/crepe/system/AudioSystem.h
new file mode 100644
index 0000000..2ddc443
--- /dev/null
+++ b/src/crepe/system/AudioSystem.h
@@ -0,0 +1,51 @@
+#pragma once
+
+#include "../api/AudioSource.h"
+#include "../facade/Sound.h"
+#include "../facade/SoundContext.h"
+
+#include "System.h"
+
+namespace crepe {
+
+class AudioSystem : public System {
+public:
+	using System::System;
+	void update() override;
+
+private:
+	/**
+	 * \brief Update `last_*` members of \c component
+	 *
+	 * Copies all component properties stored for comparison between AudioSystem::update() calls
+	 *
+	 * \param component AudioSource component to update
+	 */
+	void update_last(AudioSource & component);
+
+	/**
+	 * \brief Compare update component
+	 *
+	 * Compares properties of \c component and \c data, and calls SoundContext functions where
+	 * applicable.
+	 *
+	 * \param component AudioSource component to update
+	 * \param resource Sound instance for AudioSource's Asset
+	 */
+	void diff_update(AudioSource & component, Sound & resource);
+
+protected:
+	/**
+	 * \brief Get SoundContext
+	 *
+	 * SoundContext is retrieved through this function instead of being a direct member of
+	 * AudioSystem to aid with testability.
+	 */
+	virtual SoundContext & get_context();
+
+private:
+	//! SoundContext
+	std::unique_ptr<SoundContext> context = nullptr;
+};
+
+} // namespace crepe
diff --git a/src/crepe/system/CMakeLists.txt b/src/crepe/system/CMakeLists.txt
index 95f6e33..0e2db76 100644
--- a/src/crepe/system/CMakeLists.txt
+++ b/src/crepe/system/CMakeLists.txt
@@ -5,8 +5,10 @@ target_sources(crepe PUBLIC
 	PhysicsSystem.cpp
 	CollisionSystem.cpp
 	RenderSystem.cpp
+	AudioSystem.cpp
 	AnimatorSystem.cpp
 	InputSystem.cpp
+	AISystem.cpp
 )
 
 target_sources(crepe PUBLIC FILE_SET HEADERS FILES
@@ -15,6 +17,8 @@ target_sources(crepe PUBLIC FILE_SET HEADERS FILES
 	PhysicsSystem.h
 	CollisionSystem.h
 	RenderSystem.h
+	AudioSystem.h
 	AnimatorSystem.h
 	InputSystem.h
+	AISystem.h
 )
diff --git a/src/crepe/system/CollisionSystem.h b/src/crepe/system/CollisionSystem.h
index 7e893c8..5b136c6 100644
--- a/src/crepe/system/CollisionSystem.h
+++ b/src/crepe/system/CollisionSystem.h
@@ -37,7 +37,7 @@ private:
 
 	/**
 		* \brief A structure to store the collision data of a single collider.
-		* 
+		*
 		* This structure all components and id that are for needed within this system when calculating or handeling collisions.
 		* The transform and rigidbody are mostly needed for location and rotation.
 		* In rigidbody additional info is written about what the body of the object is,
@@ -65,7 +65,7 @@ private:
 public:
 	/**
 		* \brief Structure representing detailed collision information between two colliders.
-		* 
+		*
 		* Includes information about the colliding objects and the resolution data for handling the collision.
 		*/
 	struct CollisionInfo {
@@ -90,9 +90,9 @@ public:
 private:
 	/**
 		* \brief Determines the type of collider pair from two colliders.
-		* 
+		*
 		* Uses std::holds_alternative to identify the types of the provided colliders.
-		* 
+		*
 		* \param collider1 First collider variant (BoxCollider or CircleCollider).
 		* \param collider2 Second collider variant (BoxCollider or CircleCollider).
 		* \return The combined type of the two colliders.
@@ -102,9 +102,9 @@ private:
 
 	/**
 		* \brief Calculates the current position of a collider.
-		* 
+		*
 		* Combines the Collider offset, Transform position, and Rigidbody offset to compute the position of the collider.
-		* 
+		*
 		* \param collider_offset The offset of the collider.
 		* \param transform The Transform of the associated game object.
 		* \param rigidbody The Rigidbody of the associated game object.
@@ -116,9 +116,9 @@ private:
 private:
 	/**
 		* \brief Handles collision resolution between two colliders.
-		* 
+		*
 		* Processes collision data and adjusts objects to resolve collisions and/or calls the user oncollision script function.
-		* 
+		*
 		* \param data1 Collision data for the first collider.
 		* \param data2 Collision data for the second collider.
 		*/
@@ -126,9 +126,9 @@ private:
 
 	/**
 		* \brief Resolves collision between two colliders and calculates the movement required.
-		* 
+		*
 		* Determines the displacement and direction needed to separate colliders based on their types.
-		* 
+		*
 		* \param data1 Collision data for the first collider.
 		* \param data2 Collision data for the second collider.
 		* \param type The type of collider pair.
@@ -140,9 +140,9 @@ private:
 
 	/**
 		* \brief Calculates the resolution vector for two BoxColliders.
-		* 
+		*
 		* Computes the displacement required to separate two overlapping BoxColliders.
-		* 
+		*
 		* \param box_collider1 The first BoxCollider.
 		* \param box_collider2 The second BoxCollider.
 		* \param position1 The position of the first BoxCollider.
@@ -155,13 +155,13 @@ private:
 
 	/**
 		* \brief Calculates the resolution vector for two CircleCollider.
-		* 
+		*
 		* Computes the displacement required to separate two overlapping CircleCollider.
-		* 
+		*
 		* \param circle_collider1 The first CircleCollider.
 		* \param circle_collider2 The second CircleCollider.
-		* \param position1 The position of the first CircleCollider.
-		* \param position2 The position of the second CircleCollider.
+		* \param final_position1 The position of the first CircleCollider.
+		* \param final_position2 The position of the second CircleCollider.
 		* \return The resolution vector for the collision.
 		*/
 	vec2 get_circle_circle_resolution(const CircleCollider & circle_collider1,
@@ -171,14 +171,13 @@ private:
 
 	/**
 		* \brief Calculates the resolution vector for two CircleCollider.
-		* 
+		*
 		* Computes the displacement required to separate two overlapping CircleCollider.
-		* 
+		*
 		* \param circle_collider The first CircleCollider.
 		* \param box_collider The second CircleCollider.
 		* \param circle_position The position of the CircleCollider.
 		* \param box_position The position of the BoxCollider.
-		* \param inverse Inverted true if box circle collision, false if circle box collision (inverts the direction).
 		* \return The resolution vector for the collision.
 		*/
 	vec2 get_circle_box_resolution(const CircleCollider & circle_collider,
@@ -188,18 +187,18 @@ private:
 
 	/**
 		* \brief Determines the appropriate collision handler for a collision.
-		* 
+		*
 		* Decides the correct resolution process based on the dynamic or static nature of the colliders involved.
-		* 
+		*
 		* \param info Collision information containing data about both colliders.
 		*/
 	void determine_collision_handler(CollisionInfo & info);
 
 	/**
 		* \brief Handles collisions involving static objects.
-		* 
+		*
 		* Resolves collisions by adjusting positions and modifying velocities if bounce is enabled.
-		* 
+		*
 		* \param info Collision information containing data about both colliders.
 		*/
 	void static_collision_handler(CollisionInfo & info);
@@ -207,9 +206,9 @@ private:
 private:
 	/**
 		* \brief Checks for collisions between colliders.
-		* 
+		*
 		* Identifies collisions and generates pairs of colliding objects for further processing.
-		* 
+		*
 		* \param colliders A collection of all active colliders.
 		* \return A list of collision pairs with their associated data.
 		*/
@@ -218,13 +217,13 @@ private:
 
 	/**
 	 * \brief Checks if two collision layers have at least one common layer.
-	 * 
+	 *
 	 * This function checks if there is any overlapping layer between the two inputs.
-	 * It compares each layer from the first input to see 
-	 * if it exists in the second input. If at least one common layer is found, 
-	 * the function returns true, indicating that the two colliders share a common 
+	 * It compares each layer from the first input to see
+	 * if it exists in the second input. If at least one common layer is found,
+	 * the function returns true, indicating that the two colliders share a common
 	 * collision layer.
-	 * 
+	 *
 	 * \param layers1 all collision layers for the first collider.
 	 * \param layers2 all collision layers for the second collider.
 	 * \return Returns true if there is at least one common layer, false otherwise.
@@ -234,9 +233,9 @@ private:
 
 	/**
 		* \brief Checks for collision between two colliders.
-		* 
+		*
 		* Calls the appropriate collision detection function based on the collider types.
-		* 
+		*
 		* \param first_info Collision data for the first collider.
 		* \param second_info Collision data for the second collider.
 		* \param type The type of collider pair.
@@ -248,7 +247,7 @@ private:
 
 	/**
 		* \brief Detects collisions between two BoxColliders.
-		* 
+		*
 		* \param box1 The first BoxCollider.
 		* \param box2 The second BoxCollider.
 		* \param transform1 Transform of the first object.
diff --git a/src/crepe/system/InputSystem.cpp b/src/crepe/system/InputSystem.cpp
index 7cc8d30..a710ae2 100644
--- a/src/crepe/system/InputSystem.cpp
+++ b/src/crepe/system/InputSystem.cpp
@@ -1,6 +1,8 @@
 #include "../api/Button.h"
 #include "../manager/ComponentManager.h"
 #include "../manager/EventManager.h"
+#include "facade/SDLContext.h"
+#include "util/Log.h"
 
 #include "InputSystem.h"
 
@@ -9,7 +11,8 @@ using namespace crepe;
 void InputSystem::update() {
 	ComponentManager & mgr = this->mediator.component_manager;
 	EventManager & event_mgr = this->mediator.event_manager;
-	std::vector<SDLContext::EventData> event_list = SDLContext::get_instance().get_events();
+	SDLContext & context = this->mediator.sdl_context;
+	std::vector<SDLContext::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;
@@ -24,10 +27,10 @@ void InputSystem::update() {
 	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.offset.x - (current_cam.viewport_size.x / 2);
-	int camera_origin_y
-		= cam_transform.position.y + current_cam.offset.y - (current_cam.viewport_size.y / 2);
+	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;
diff --git a/src/crepe/system/ParticleSystem.h b/src/crepe/system/ParticleSystem.h
index c647284..068f01c 100644
--- a/src/crepe/system/ParticleSystem.h
+++ b/src/crepe/system/ParticleSystem.h
@@ -25,7 +25,7 @@ public:
 private:
 	/**
 	 * \brief Emits a particle from the specified emitter based on its emission properties.
-	 * 
+	 *
 	 * \param emitter Reference to the ParticleEmitter.
 	 * \param transform Const reference to the Transform component associated with the emitter.
 	 */
@@ -34,7 +34,7 @@ private:
 	/**
 	 * \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.
@@ -44,7 +44,7 @@ private:
 	/**
 	 * \brief Checks whether particles are within the emitter’s boundary, resets or stops
 	 * particles if they exit.
-	 * 
+	 *
 	 * \param emitter Reference to the ParticleEmitter.
 	 * \param transform Const reference to the Transform component associated with the emitter.
 	 */
@@ -52,7 +52,7 @@ private:
 
 	/**
 	 * \brief Generates a random angle for particle emission within the specified range.
-	 * 
+	 *
 	 * \param min_angle Minimum emission angle in degrees.
 	 * \param max_angle Maximum emission angle in degrees.
 	 * \return Random angle in degrees.
@@ -61,7 +61,7 @@ private:
 
 	/**
 	 * \brief Generates a random speed for particle emission within the specified range.
-	 * 
+	 *
 	 * \param min_speed Minimum emission speed.
 	 * \param max_speed Maximum emission speed.
 	 * \return Random speed.
diff --git a/src/crepe/system/PhysicsSystem.cpp b/src/crepe/system/PhysicsSystem.cpp
index ebf4439..3b3b8ab 100644
--- a/src/crepe/system/PhysicsSystem.cpp
+++ b/src/crepe/system/PhysicsSystem.cpp
@@ -5,88 +5,95 @@
 #include "../api/Transform.h"
 #include "../api/Vector2.h"
 #include "../manager/ComponentManager.h"
+#include "../manager/LoopTimerManager.h"
+#include "../manager/Mediator.h"
 
 #include "PhysicsSystem.h"
 
 using namespace crepe;
 
 void PhysicsSystem::update() {
-	ComponentManager & mgr = this->mediator.component_manager;
+
+	const Mediator & mediator = this->mediator;
+	ComponentManager & mgr = mediator.component_manager;
+	LoopTimerManager & loop_timer = mediator.loop_timer;
 	RefVector<Rigidbody> rigidbodies = mgr.get_components_by_type<Rigidbody>();
-	RefVector<Transform> transforms = mgr.get_components_by_type<Transform>();
+	float dt = loop_timer.get_scaled_fixed_delta_time().count();
 
-	double gravity = Config::get_instance().physics.gravity;
+	float gravity = Config::get_instance().physics.gravity;
 	for (Rigidbody & rigidbody : rigidbodies) {
 		if (!rigidbody.active) continue;
+		Transform & transform
+			= mgr.get_components_by_id<Transform>(rigidbody.game_object_id).front().get();
 
 		switch (rigidbody.data.body_type) {
 			case Rigidbody::BodyType::DYNAMIC:
-				for (Transform & transform : transforms) {
-					if (transform.game_object_id == rigidbody.game_object_id) {
+				if (transform.game_object_id == rigidbody.game_object_id) {
+					// Add gravity
 
-						// Add gravity
-						if (rigidbody.data.gravity_scale > 0) {
-							rigidbody.data.linear_velocity.y
-								+= (rigidbody.data.mass * rigidbody.data.gravity_scale
-									* gravity);
-						}
-						// Add damping
-						if (rigidbody.data.angular_velocity_coefficient > 0) {
-							rigidbody.data.angular_velocity
-								*= rigidbody.data.angular_velocity_coefficient;
-						}
-						if (rigidbody.data.linear_velocity_coefficient.x > 0
-							&& rigidbody.data.linear_velocity_coefficient.y > 0) {
-							rigidbody.data.linear_velocity
-								*= rigidbody.data.linear_velocity_coefficient;
-						}
+					if (rigidbody.data.mass <= 0) {
+						throw std::runtime_error("Mass must be greater than 0");
+					}
 
-						// Max velocity check
-						if (rigidbody.data.angular_velocity
-							> rigidbody.data.max_angular_velocity) {
-							rigidbody.data.angular_velocity
-								= rigidbody.data.max_angular_velocity;
-						} else if (rigidbody.data.angular_velocity
-								   < -rigidbody.data.max_angular_velocity) {
-							rigidbody.data.angular_velocity
-								= -rigidbody.data.max_angular_velocity;
-						}
+					if (gravity <= 0) {
+						throw std::runtime_error("Config Gravity must be greater than 0");
+					}
 
-						if (rigidbody.data.linear_velocity.x
-							> rigidbody.data.max_linear_velocity.x) {
-							rigidbody.data.linear_velocity.x
-								= rigidbody.data.max_linear_velocity.x;
-						} else if (rigidbody.data.linear_velocity.x
-								   < -rigidbody.data.max_linear_velocity.x) {
-							rigidbody.data.linear_velocity.x
-								= -rigidbody.data.max_linear_velocity.x;
-						}
+					if (rigidbody.data.gravity_scale > 0 && !rigidbody.data.constraints.y) {
+						rigidbody.data.linear_velocity.y
+							+= (rigidbody.data.mass * rigidbody.data.gravity_scale * gravity
+								* dt);
+					}
+					// Add coefficient rotation
+					if (rigidbody.data.angular_velocity_coefficient > 0) {
+						rigidbody.data.angular_velocity
+							*= std::pow(rigidbody.data.angular_velocity_coefficient, dt);
+					}
 
-						if (rigidbody.data.linear_velocity.y
-							> rigidbody.data.max_linear_velocity.y) {
-							rigidbody.data.linear_velocity.y
-								= rigidbody.data.max_linear_velocity.y;
-						} else if (rigidbody.data.linear_velocity.y
-								   < -rigidbody.data.max_linear_velocity.y) {
-							rigidbody.data.linear_velocity.y
-								= -rigidbody.data.max_linear_velocity.y;
-						}
+					// Add coefficient movement horizontal
+					if (rigidbody.data.linear_velocity_coefficient.x > 0
+						&& !rigidbody.data.constraints.x) {
+						rigidbody.data.linear_velocity.x
+							*= std::pow(rigidbody.data.linear_velocity_coefficient.x, dt);
+					}
 
-						// Move object
-						if (!rigidbody.data.constraints.rotation) {
-							transform.rotation += rigidbody.data.angular_velocity;
-							transform.rotation = std::fmod(transform.rotation, 360.0);
-							if (transform.rotation < 0) {
-								transform.rotation += 360.0;
-							}
-						}
-						if (!rigidbody.data.constraints.x) {
-							transform.position.x += rigidbody.data.linear_velocity.x;
-						}
-						if (!rigidbody.data.constraints.y) {
-							transform.position.y += rigidbody.data.linear_velocity.y;
+					// Add coefficient movement horizontal
+					if (rigidbody.data.linear_velocity_coefficient.y > 0
+						&& !rigidbody.data.constraints.y) {
+						rigidbody.data.linear_velocity.y
+							*= std::pow(rigidbody.data.linear_velocity_coefficient.y, dt);
+					}
+
+					// Max velocity check
+					if (rigidbody.data.angular_velocity
+						> rigidbody.data.max_angular_velocity) {
+						rigidbody.data.angular_velocity = rigidbody.data.max_angular_velocity;
+					} else if (rigidbody.data.angular_velocity
+							   < -rigidbody.data.max_angular_velocity) {
+						rigidbody.data.angular_velocity = -rigidbody.data.max_angular_velocity;
+					}
+
+					// Set max velocity to maximum length
+					if (rigidbody.data.linear_velocity.length()
+						> rigidbody.data.max_linear_velocity) {
+						rigidbody.data.linear_velocity.normalize();
+						rigidbody.data.linear_velocity *= rigidbody.data.max_linear_velocity;
+					}
+
+					// Move object
+					if (!rigidbody.data.constraints.rotation) {
+						transform.rotation += rigidbody.data.angular_velocity * dt;
+						transform.rotation = std::fmod(transform.rotation, 360.0);
+						if (transform.rotation < 0) {
+							transform.rotation += 360.0;
 						}
 					}
+					if (!rigidbody.data.constraints.x) {
+						transform.position.x += rigidbody.data.linear_velocity.x * dt;
+					}
+					if (!rigidbody.data.constraints.y) {
+						transform.position.y += rigidbody.data.linear_velocity.y * dt;
+					}
 				}
 				break;
 			case Rigidbody::BodyType::KINEMATIC:
diff --git a/src/crepe/system/PhysicsSystem.h b/src/crepe/system/PhysicsSystem.h
index 227ab69..26152a5 100644
--- a/src/crepe/system/PhysicsSystem.h
+++ b/src/crepe/system/PhysicsSystem.h
@@ -6,7 +6,7 @@ namespace crepe {
 
 /**
  * \brief System that controls all physics
- * 
+ *
  * This class is a physics system that uses a rigidbody and transform to add physics to a game
  * object.
  */
@@ -15,7 +15,7 @@ public:
 	using System::System;
 	/**
 	 * \brief updates the physics system.
-	 * 
+	 *
 	 * It calculates new velocties and changes the postion in the transform.
 	 */
 	void update() override;
diff --git a/src/crepe/system/RenderSystem.cpp b/src/crepe/system/RenderSystem.cpp
index 92dba43..afd9548 100644
--- a/src/crepe/system/RenderSystem.cpp
+++ b/src/crepe/system/RenderSystem.cpp
@@ -10,20 +10,29 @@
 #include "../api/Sprite.h"
 #include "../api/Transform.h"
 #include "../facade/SDLContext.h"
+#include "../facade/Texture.h"
 #include "../manager/ComponentManager.h"
+#include "../manager/ResourceManager.h"
 
 #include "RenderSystem.h"
+#include "types.h"
 
 using namespace crepe;
 using namespace std;
 
-void RenderSystem::clear_screen() { this->context.clear_screen(); }
+void RenderSystem::clear_screen() {
+	SDLContext & ctx = this->mediator.sdl_context;
+	ctx.clear_screen();
+}
 
-void RenderSystem::present_screen() { this->context.present_screen(); }
+void RenderSystem::present_screen() {
+	SDLContext & ctx = this->mediator.sdl_context;
+	ctx.present_screen();
+}
 
-const Camera & RenderSystem::update_camera() {
+void RenderSystem::update_camera() {
 	ComponentManager & mgr = this->mediator.component_manager;
-
+	SDLContext & ctx = this->mediator.sdl_context;
 	RefVector<Camera> cameras = mgr.get_components_by_type<Camera>();
 
 	if (cameras.size() == 0) throw std::runtime_error("No cameras in current scene");
@@ -32,16 +41,18 @@ const Camera & RenderSystem::update_camera() {
 		if (!cam.active) continue;
 		const Transform & transform
 			= mgr.get_components_by_id<Transform>(cam.game_object_id).front().get();
-		this->context.set_camera(cam);
-		this->cam_pos = transform.position + cam.offset;
-		return cam;
+		vec2 new_camera_pos = transform.position + cam.data.postion_offset;
+		ctx.update_camera_view(cam, new_camera_pos);
+		return;
 	}
 	throw std::runtime_error("No active cameras in current scene");
 }
 
 bool sorting_comparison(const Sprite & a, const Sprite & b) {
-	if (a.sorting_in_layer < b.sorting_in_layer) return true;
-	if (a.sorting_in_layer == b.sorting_in_layer) return a.order_in_layer < b.order_in_layer;
+	if (a.data.sorting_in_layer != b.data.sorting_in_layer)
+		return a.data.sorting_in_layer < b.data.sorting_in_layer;
+	if (a.data.order_in_layer != b.data.order_in_layer)
+		return a.data.order_in_layer < b.data.order_in_layer;
 
 	return false;
 }
@@ -59,10 +70,12 @@ void RenderSystem::update() {
 	this->present_screen();
 }
 
-bool RenderSystem::render_particle(const Sprite & sprite, const Camera & cam,
-								   const double & scale) {
+bool RenderSystem::render_particle(const Sprite & sprite, const double & scale) {
 
 	ComponentManager & mgr = this->mediator.component_manager;
+	SDLContext & ctx = this->mediator.sdl_context;
+	ResourceManager & resource_manager = this->mediator.resource_manager;
+	Texture & res = resource_manager.get<Texture>(sprite.source);
 
 	vector<reference_wrapper<ParticleEmitter>> emitters
 		= mgr.get_components_by_id<ParticleEmitter>(sprite.game_object_id);
@@ -77,10 +90,9 @@ bool RenderSystem::render_particle(const Sprite & sprite, const Camera & cam,
 		for (const Particle & p : em.data.particles) {
 			if (!p.active) continue;
 
-			this->context.draw(SDLContext::RenderContext{
+			ctx.draw(SDLContext::RenderContext{
 				.sprite = sprite,
-				.cam = cam,
-				.cam_pos = this->cam_pos,
+				.texture = res,
 				.pos = p.position,
 				.angle = p.angle,
 				.scale = scale,
@@ -89,12 +101,14 @@ bool RenderSystem::render_particle(const Sprite & sprite, const Camera & cam,
 	}
 	return rendering_particles;
 }
-void RenderSystem::render_normal(const Sprite & sprite, const Camera & cam,
-								 const Transform & tm) {
-	this->context.draw(SDLContext::RenderContext{
+void RenderSystem::render_normal(const Sprite & sprite, const Transform & tm) {
+	SDLContext & ctx = this->mediator.sdl_context;
+	ResourceManager & resource_manager = this->mediator.resource_manager;
+	const Texture & res = resource_manager.get<Texture>(sprite.source);
+
+	ctx.draw(SDLContext::RenderContext{
 		.sprite = sprite,
-		.cam = cam,
-		.cam_pos = this->cam_pos,
+		.texture = res,
 		.pos = tm.position,
 		.angle = tm.rotation,
 		.scale = tm.scale,
@@ -103,7 +117,7 @@ void RenderSystem::render_normal(const Sprite & sprite, const Camera & cam,
 
 void RenderSystem::render() {
 	ComponentManager & mgr = this->mediator.component_manager;
-	const Camera & cam = this->update_camera();
+	this->update_camera();
 
 	RefVector<Sprite> sprites = mgr.get_components_by_type<Sprite>();
 	RefVector<Sprite> sorted_sprites = this->sort(sprites);
@@ -113,10 +127,10 @@ void RenderSystem::render() {
 		const Transform & transform
 			= mgr.get_components_by_id<Transform>(sprite.game_object_id).front().get();
 
-		bool rendered_particles = this->render_particle(sprite, cam, transform.scale);
+		bool rendered_particles = this->render_particle(sprite, transform.scale);
 
 		if (rendered_particles) continue;
 
-		this->render_normal(sprite, cam, transform);
+		this->render_normal(sprite, transform);
 	}
 }
diff --git a/src/crepe/system/RenderSystem.h b/src/crepe/system/RenderSystem.h
index 096d058..fc7b46e 100644
--- a/src/crepe/system/RenderSystem.h
+++ b/src/crepe/system/RenderSystem.h
@@ -2,8 +2,6 @@
 
 #include <cmath>
 
-#include "facade/SDLContext.h"
-
 #include "System.h"
 #include "types.h"
 
@@ -14,11 +12,10 @@ class Sprite;
 class Transform;
 
 /**
- * \class RenderSystem
  * \brief Manages rendering operations for all game objects.
  *
  * RenderSystem is responsible for rendering, clearing and presenting the screen, and
- * managing the active camera. 
+ * managing the active camera.
  */
 class RenderSystem : public System {
 public:
@@ -37,7 +34,7 @@ private:
 	void present_screen();
 
 	//! Updates the active camera used for rendering.
-	const Camera & update_camera();
+	void update_camera();
 
 	//! Renders the whole screen
 	void render();
@@ -52,20 +49,20 @@ private:
 	 *  constructor is now protected i cannot make tmp inside
 	 * \return true if particles have been rendered
 	 */
-	bool render_particle(const Sprite & sprite, const Camera & cam, const double & scale);
+	bool render_particle(const Sprite & sprite, const double & scale);
 
 	/**
-	 * \brief renders a sprite with a Transform component on the screen 
+	 * \brief renders a sprite with a Transform component on the screen
 	 *
 	 * \param sprite  the sprite component that holds all the data
-	 * \param tm the Transform component that holds the position,rotation and scale 
+	 * \param tm the Transform component that holds the position,rotation and scale
 	 */
-	void render_normal(const Sprite & sprite, const Camera & cam, const Transform & tm);
+	void render_normal(const Sprite & sprite, const Transform & tm);
 
 	/**
 	 * \brief sort a vector sprite objects with
 	 *
-	 * \param objs the vector that will do a sorting algorithm on 
+	 * \param objs the vector that will do a sorting algorithm on
 	 * \return returns a sorted reference vector
 	 */
 	RefVector<Sprite> sort(RefVector<Sprite> & objs) const;
@@ -75,13 +72,6 @@ private:
 	 * \todo Implement a text component and a button component.
 	 * \todo Consider adding text input functionality.
 	 */
-
-private:
-	// FIXME: retrieve sdlcontext via mediator after #PR57
-	SDLContext & context = SDLContext::get_instance();
-
-	//! camera postion in the current scene
-	vec2 cam_pos;
 };
 
 } // namespace crepe
diff --git a/src/crepe/system/ScriptSystem.h b/src/crepe/system/ScriptSystem.h
index 936e9ca..3db1b1e 100644
--- a/src/crepe/system/ScriptSystem.h
+++ b/src/crepe/system/ScriptSystem.h
@@ -8,7 +8,7 @@ class Script;
 
 /**
  * \brief Script system
- * 
+ *
  * The script system is responsible for all \c BehaviorScript components, and
  * calls the methods on classes derived from \c Script.
  */
diff --git a/src/crepe/system/System.cpp b/src/crepe/system/System.cpp
index f68549b..ecc740d 100644
--- a/src/crepe/system/System.cpp
+++ b/src/crepe/system/System.cpp
@@ -1,7 +1,5 @@
-#include "../util/Log.h"
-
 #include "System.h"
 
 using namespace crepe;
 
-System::System(const Mediator & mediator) : mediator(mediator) { dbg_trace(); }
+System::System(const Mediator & mediator) : mediator(mediator) {}