refactor: memory leaks caused by behaviour collectors fixed

Engine.Core/Abstract/IBehaviourCollector.cs

@@ -7,7 +7,7 @@ namespace Syntriax.Engine.Core;
 /// Provides mechanisms for tracking additions and removals, and notifies subscribers when such events occur on the assigned <see cref="IUniverse"/>.
 /// </summary>
 /// <typeparam name="T">The type of objects tracked by the collector.</typeparam>
-public interface IBehaviourCollector<T> : IHasUniverse, IEnumerable<T> where T : class
+public interface IBehaviourCollector<T> : IHasUniverse where T : class
 {
     /// <summary>
     /// Event triggered when an object of type <typeparamref name="T"/> is added to the collector.

Engine.Core/ActiveBehaviourCollector.cs

@@ -19,8 +19,6 @@ public class ActiveBehaviourCollector<T> : IBehaviourCollector<T> where T : clas
     public IReadOnlyList<T> Behaviours => activeBehaviours;
     public IUniverse Universe { get; private set; } = null!;
 
-    public T this[Index index] => activeBehaviours[index];
-
     public ActiveBehaviourCollector() { }
     public ActiveBehaviourCollector(IUniverse universe) => Assign(universe);
 
@@ -61,12 +59,12 @@ public class ActiveBehaviourCollector<T> : IBehaviourCollector<T> where T : clas
         {
             activeBehaviours.Add(behaviour);
             OnBehaviourAdd(behaviour);
-            OnCollected?.InvokeSafe(this, behaviour);
+            OnCollected?.Invoke(this, behaviour);
         }
         else if (activeBehaviours.Remove(behaviour))
         {
             OnBehaviourRemove(behaviour);
-            OnRemoved?.InvokeSafe(this, behaviour);
+            OnRemoved?.Invoke(this, behaviour);
         }
     }
 
@@ -83,7 +81,7 @@ public class ActiveBehaviourCollector<T> : IBehaviourCollector<T> where T : clas
         if (activeBehaviours.Remove(tBehaviour))
         {
             OnBehaviourRemove(tBehaviour);
-            OnRemoved?.InvokeSafe(this, tBehaviour);
+            OnRemoved?.Invoke(this, tBehaviour);
         }
     }
 
@@ -99,7 +97,7 @@ public class ActiveBehaviourCollector<T> : IBehaviourCollector<T> where T : clas
         universe.OnUniverseObjectUnRegistered += OnUniverseObjectUnregistered;
 
         Universe = universe;
-        OnUniverseAssigned?.InvokeSafe(this);
+        OnUniverseAssigned?.Invoke(this);
 
         return true;
     }
@@ -116,10 +114,7 @@ public class ActiveBehaviourCollector<T> : IBehaviourCollector<T> where T : clas
         Universe.OnUniverseObjectUnRegistered -= OnUniverseObjectUnregistered;
 
         Universe = null!;
-        OnUnassigned?.InvokeSafe(this);
+        OnUnassigned?.Invoke(this);
         return true;
     }
-
-    public IEnumerator<T> GetEnumerator() => activeBehaviours.GetEnumerator();
-    IEnumerator IEnumerable.GetEnumerator() => activeBehaviours.GetEnumerator();
 }

Engine.Core/BaseEntity.cs

@@ -33,7 +33,7 @@ public abstract class BaseEntity : IEntity
             string previousId = _id;
 
             _id = value;
-            OnIdChanged?.InvokeSafe(this, previousId);
+            OnIdChanged?.Invoke(this, previousId);
         }
     }
 
@@ -47,9 +47,9 @@ public abstract class BaseEntity : IEntity
 
             _initialized = value;
             if (value)
-                OnInitialized?.InvokeSafe(this);
+                OnInitialized?.Invoke(this);
             else
-                OnFinalized?.InvokeSafe(this);
+                OnFinalized?.Invoke(this);
         }
     }
 
@@ -62,7 +62,7 @@ public abstract class BaseEntity : IEntity
         _stateEnable = stateEnable;
         _stateEnable.Assign(this);
         OnAssign(stateEnable);
-        OnStateEnableAssigned?.InvokeSafe(this);
+        OnStateEnableAssigned?.Invoke(this);
         return true;
     }
 
@@ -76,7 +76,7 @@ public abstract class BaseEntity : IEntity
 
         _stateEnable = null!;
         _stateEnable.Unassign();
-        OnUnassigned?.InvokeSafe(this);
+        OnUnassigned?.Invoke(this);
         return true;
     }
 

Engine.Core/BehaviourBase.cs

@@ -21,7 +21,7 @@ public abstract class BehaviourBase : BaseEntity, IBehaviour
 
             int previousPriority = _priority;
             _priority = value;
-            OnPriorityChanged?.InvokeSafe(this, previousPriority);
+            OnPriorityChanged?.Invoke(this, previousPriority);
         }
     }
 
@@ -39,7 +39,7 @@ public abstract class BehaviourBase : BaseEntity, IBehaviour
         behaviourController.OnUniverseObjectAssigned += OnUniverseObjectAssigned;
         if (behaviourController.UniverseObject is not null)
             OnUniverseObjectAssigned(behaviourController);
-        OnBehaviourControllerAssigned?.InvokeSafe(this);
+        OnBehaviourControllerAssigned?.Invoke(this);
         return true;
     }
 
@@ -79,6 +79,6 @@ public abstract class BehaviourBase : BaseEntity, IBehaviour
         _isActive = StateEnable.Enabled && _behaviourController.UniverseObject.IsActive;
 
         if (previousActive != IsActive)
-            OnActiveChanged?.InvokeSafe(this, previousActive);
+            OnActiveChanged?.Invoke(this, previousActive);
     }
 }

Engine.Core/BehaviourCollector.cs

@@ -17,8 +17,6 @@ public class BehaviourCollector<T> : IBehaviourCollector<T> where T : class
     public IReadOnlyList<T> Behaviours => behaviours;
     public IUniverse Universe { get; private set; } = null!;
 
-    public T this[Index index] => behaviours[index];
-
     public BehaviourCollector() { }
     public BehaviourCollector(IUniverse universe) => Assign(universe);
 
@@ -48,7 +46,7 @@ public class BehaviourCollector<T> : IBehaviourCollector<T> where T : class
 
         behaviours.Add(tBehaviour);
         OnBehaviourAdd(behaviour);
-        OnCollected?.InvokeSafe(this, tBehaviour);
+        OnCollected?.Invoke(this, tBehaviour);
     }
 
     protected virtual void OnBehaviourRemove(IBehaviour behaviour) { }
@@ -61,7 +59,7 @@ public class BehaviourCollector<T> : IBehaviourCollector<T> where T : class
             return;
 
         OnBehaviourRemove(behaviour);
-        OnRemoved?.InvokeSafe(this, tBehaviour);
+        OnRemoved?.Invoke(this, tBehaviour);
     }
 
     protected virtual void OnAssign(IUniverse universe) { }
@@ -78,7 +76,7 @@ public class BehaviourCollector<T> : IBehaviourCollector<T> where T : class
 
         Universe = universe;
         OnAssign(universe);
-        OnUniverseAssigned?.InvokeSafe(this);
+        OnUniverseAssigned?.Invoke(this);
 
         return true;
     }
@@ -95,10 +93,7 @@ public class BehaviourCollector<T> : IBehaviourCollector<T> where T : class
         Universe.OnUniverseObjectUnRegistered -= OnUniverseObjectUnregistered;
 
         Universe = null!;
-        OnUnassigned?.InvokeSafe(this);
+        OnUnassigned?.Invoke(this);
         return true;
     }
-
-    public IEnumerator<T> GetEnumerator() => behaviours.GetEnumerator();
-    IEnumerator IEnumerable.GetEnumerator() => behaviours.GetEnumerator();
 }

Engine.Core/BehaviourController.cs

@@ -27,7 +27,7 @@ public class BehaviourController : BaseEntity, IBehaviourController
         if (IsInitialized)
             behaviour.Initialize();
         behaviour.OnPriorityChanged += OnPriorityChange;
-        OnBehaviourAdded?.InvokeSafe(this, behaviour);
+        OnBehaviourAdded?.Invoke(this, behaviour);
         return behaviour;
     }
 
@@ -95,7 +95,7 @@ public class BehaviourController : BaseEntity, IBehaviourController
         behaviour.OnPriorityChanged -= OnPriorityChange;
         behaviour.Finalize();
         behaviours.Remove(behaviour);
-        OnBehaviourRemoved?.InvokeSafe(this, behaviour);
+        OnBehaviourRemoved?.Invoke(this, behaviour);
     }
 
     protected virtual void OnAssign(IUniverseObject universeObject) { }
@@ -106,7 +106,7 @@ public class BehaviourController : BaseEntity, IBehaviourController
 
         _universeObject = universeObject;
         OnAssign(universeObject);
-        OnUniverseObjectAssigned?.InvokeSafe(this);
+        OnUniverseObjectAssigned?.Invoke(this);
         return true;
     }
 

Engine.Core/Helpers/DelegateExtensions.cs

@@ -4,9 +4,10 @@ namespace Syntriax.Engine.Core;
 
 public static class DelegateExtensions
 {
+    [Obsolete($"{nameof(InvokeSafe)} causes memory allocation, please use Invoke() instead.")]
     public static void InvokeSafe(this Delegate @delegate, params object?[] args)
     {
-        foreach (Delegate invocation in @delegate.GetInvocationList())
+        foreach (Delegate invocation in Delegate.EnumerateInvocationList(@delegate))
             try { invocation.DynamicInvoke(args); }
             catch (Exception exception)
             {

Engine.Core/Helpers/Progression/ProgressionTracker.cs

@@ -19,10 +19,10 @@ public class ProgressionTracker : IProgressionTracker
         Progression = progression.Clamp(Progression, 1f);
         Status = status;
 
-        OnUpdated?.InvokeSafe(this, previousProgression, previousStatus);
+        OnUpdated?.Invoke(this, previousProgression, previousStatus);
 
         if (progression >= 1f)
-            OnEnded?.InvokeSafe(this);
+            OnEnded?.Invoke(this);
     }
 
     void IProgressionTracker.Reset()

Engine.Core/Primitives/Shape2D.cs

@@ -35,7 +35,7 @@ public class Shape2D(List<Vector2D> vertices) : IEnumerable<Vector2D>
             foreach (Vector2D vertex in value)
                 _vertices.Add(vertex);
 
-            OnShapeUpdated?.InvokeSafe(this);
+            OnShapeUpdated?.Invoke(this);
         }
     }
 
@@ -229,7 +229,7 @@ public class Shape2D(List<Vector2D> vertices) : IEnumerable<Vector2D>
         for (int i = 0; i < count; i++)
             to._vertices.Add(transform.Transform(from[i]));
 
-        to.OnShapeUpdated?.InvokeSafe(to);
+        to.OnShapeUpdated?.Invoke(to);
     }
 
     /// <summary>

Engine.Core/Serialization/EntityRegistry.cs

@@ -14,7 +14,7 @@ public class EntityRegistry
     public void Add(IEntity entity)
     {
         if (registeredEntities.TryAdd(entity.Id, entity))
-            OnEntityRegistered?.InvokeSafe(this, entity);
+            OnEntityRegistered?.Invoke(this, entity);
     }
 
     public void QueueAssign(string id, Action<IEntity> setMethod)
@@ -26,7 +26,7 @@ public class EntityRegistry
     public void AssignAll()
     {
         foreach ((string id, Action<IEntity>? action) in assignCallbacks)
-            action?.InvokeSafe(registeredEntities[id]);
+            action?.Invoke(registeredEntities[id]);
     }
 
     public void Reset()

Engine.Core/StateEnable.cs

@@ -21,7 +21,7 @@ public class StateEnable : IStateEnable
 
             bool previousState = _enabled;
             _enabled = value;
-            OnEnabledChanged?.InvokeSafe(this, previousState);
+            OnEnabledChanged?.Invoke(this, previousState);
         }
     }
 
@@ -33,7 +33,7 @@ public class StateEnable : IStateEnable
 
         _entity = entity;
         OnAssign(entity);
-        OnEntityAssigned?.InvokeSafe(this);
+        OnEntityAssigned?.Invoke(this);
         return true;
     }
 
@@ -43,7 +43,7 @@ public class StateEnable : IStateEnable
             return false;
 
         _entity = null!;
-        OnUnassigned?.InvokeSafe(this);
+        OnUnassigned?.Invoke(this);
         return true;
     }
 }

Engine.Core/Systems/UpdateManager.cs

@@ -12,7 +12,7 @@ public class UpdateManager : UniverseObject
     private readonly ActiveBehaviourCollectorSorted<IUpdate> updateEntities = new() { SortBy = SortByPriority() };
     private readonly ActiveBehaviourCollectorSorted<IPostUpdate> postUpdateEntities = new() { SortBy = SortByPriority() };
 
-    private readonly List<IFirstFrameUpdate> toCallFirstFrameUpdates = [];
+    private readonly List<IFirstFrameUpdate> toCallFirstFrameUpdates = new(32);
 
     protected override void OnEnteringUniverse(IUniverse universe)
     {

Engine.Core/Transform2D.cs

@@ -31,7 +31,7 @@ public class Transform2D : Behaviour, ITransform2D
             _position = value;
 
             UpdateLocalPosition();
-            OnPositionChanged?.InvokeSafe(this, previousPosition);
+            OnPositionChanged?.Invoke(this, previousPosition);
         }
     }
 
@@ -47,7 +47,7 @@ public class Transform2D : Behaviour, ITransform2D
             _scale = value;
 
             UpdateLocalScale();
-            OnScaleChanged?.InvokeSafe(this, previousScale);
+            OnScaleChanged?.Invoke(this, previousScale);
         }
     }
 
@@ -63,7 +63,7 @@ public class Transform2D : Behaviour, ITransform2D
             _rotation = value;
 
             UpdateLocalRotation();
-            OnRotationChanged?.InvokeSafe(this, previousRotation);
+            OnRotationChanged?.Invoke(this, previousRotation);
         }
     }
 
@@ -79,7 +79,7 @@ public class Transform2D : Behaviour, ITransform2D
             _localPosition = value;
 
             UpdatePosition();
-            OnPositionChanged?.InvokeSafe(this, previousPosition);
+            OnPositionChanged?.Invoke(this, previousPosition);
         }
     }
 
@@ -97,8 +97,8 @@ public class Transform2D : Behaviour, ITransform2D
 
             UpdateScale();
             UpdatePosition();
-            OnScaleChanged?.InvokeSafe(this, previousScale);
-            OnPositionChanged?.InvokeSafe(this, previousPosition);
+            OnScaleChanged?.Invoke(this, previousScale);
+            OnPositionChanged?.Invoke(this, previousPosition);
         }
     }
 
@@ -114,7 +114,7 @@ public class Transform2D : Behaviour, ITransform2D
             _localRotation = value;
 
             UpdateRotation();
-            OnRotationChanged?.InvokeSafe(this, previousRotation);
+            OnRotationChanged?.Invoke(this, previousRotation);
         }
     }
 
@@ -125,7 +125,7 @@ public class Transform2D : Behaviour, ITransform2D
 
         UpdatePosition();
 
-        OnPositionChanged?.InvokeSafe(this, previousPosition);
+        OnPositionChanged?.Invoke(this, previousPosition);
     }
 
     private void RecalculateScale(ITransform2D _, Vector2D previousScale)
@@ -138,8 +138,8 @@ public class Transform2D : Behaviour, ITransform2D
         UpdateScale();
         UpdatePosition();
 
-        OnScaleChanged?.InvokeSafe(this, previousScale);
-        OnPositionChanged?.InvokeSafe(this, previousPosition);
+        OnScaleChanged?.Invoke(this, previousScale);
+        OnPositionChanged?.Invoke(this, previousPosition);
     }
 
     private void RecalculateRotation(ITransform2D _, float previousRotation)
@@ -152,8 +152,8 @@ public class Transform2D : Behaviour, ITransform2D
         UpdateRotation();
         UpdatePosition();
 
-        OnRotationChanged?.InvokeSafe(this, previousRotation);
-        OnPositionChanged?.InvokeSafe(this, previousPosition);
+        OnRotationChanged?.Invoke(this, previousRotation);
+        OnPositionChanged?.Invoke(this, previousPosition);
     }
 
     private void UpdateLocalPosition()
@@ -247,9 +247,9 @@ public class Transform2D : Behaviour, ITransform2D
         UpdateLocalScale();
         UpdateLocalRotation();
 
-        OnPositionChanged?.InvokeSafe(this, Position);
-        OnScaleChanged?.InvokeSafe(this, Scale);
-        OnRotationChanged?.InvokeSafe(this, Rotation);
+        OnPositionChanged?.Invoke(this, Position);
+        OnScaleChanged?.Invoke(this, Scale);
+        OnRotationChanged?.Invoke(this, Rotation);
     }
 
     private void LookForTransform2D(IBehaviourController sender, IBehaviour behaviourAdded)

Engine.Core/Universe.cs

@@ -37,7 +37,7 @@ public class Universe : BaseEntity, IUniverse
 
             float previousTimeScale = _timeScale;
             _timeScale = value;
-            OnTimeScaleChanged?.InvokeSafe(this, previousTimeScale);
+            OnTimeScaleChanged?.Invoke(this, previousTimeScale);
         }
     }
 
@@ -60,7 +60,7 @@ public class Universe : BaseEntity, IUniverse
         if (!universeObject.EnterUniverse(this))
             throw new Exception($"{universeObject.Name} can't enter the universe");
 
-        OnUniverseObjectRegistered?.InvokeSafe(this, universeObject);
+        OnUniverseObjectRegistered?.Invoke(this, universeObject);
     }
 
     public T InstantiateUniverseObject<T>(params object?[]? args) where T : class, IUniverseObject
@@ -95,7 +95,7 @@ public class Universe : BaseEntity, IUniverse
         if (!universeObject.Finalize())
             throw new Exception($"{universeObject.Name} can't be finalized");
 
-        OnUniverseObjectUnRegistered?.InvokeSafe(this, universeObject);
+        OnUniverseObjectUnRegistered?.Invoke(this, universeObject);
     }
 
     protected override void InitializeInternal()
@@ -118,18 +118,18 @@ public class Universe : BaseEntity, IUniverse
         UnscaledTime = engineTime;
         Time = new(TimeSpan.FromTicks((long)(Time.TimeSinceStart.Ticks + engineTime.DeltaSpan.Ticks * TimeScale)), TimeSpan.FromTicks((long)(engineTime.DeltaSpan.Ticks * TimeScale)));
 
-        OnPreUpdate?.InvokeSafe(this, Time);
-        OnUpdate?.InvokeSafe(this, Time);
-        OnPostUpdate?.InvokeSafe(this, Time);
+        OnPreUpdate?.Invoke(this, Time);
+        OnUpdate?.Invoke(this, Time);
+        OnPostUpdate?.Invoke(this, Time);
     }
 
     public void Draw()
     {
         Debug.Assert.AssertInitialized(this);
 
-        OnPreDraw?.InvokeSafe(this);
-        OnDraw?.InvokeSafe(this);
-        OnPostDraw?.InvokeSafe(this);
+        OnPreDraw?.Invoke(this);
+        OnDraw?.Invoke(this);
+        OnPostDraw?.Invoke(this);
     }
 
     private void OnUniverseObjectFinalize(IInitializable initializable)

Engine.Core/UniverseObject.cs

@@ -37,7 +37,7 @@ public class UniverseObject : BaseEntity, IUniverseObject
 
             string previousName = _name;
             _name = value;
-            OnNameChanged?.InvokeSafe(this, previousName);
+            OnNameChanged?.Invoke(this, previousName);
         }
     }
 
@@ -50,7 +50,7 @@ public class UniverseObject : BaseEntity, IUniverseObject
         _universe = universe;
         UpdateActive();
         OnEnteringUniverse(universe);
-        OnEnteredUniverse?.InvokeSafe(this, universe);
+        OnEnteredUniverse?.Invoke(this, universe);
         return true;
     }
 
@@ -62,7 +62,7 @@ public class UniverseObject : BaseEntity, IUniverseObject
 
         OnExitingUniverse(universe);
         _universe = null!;
-        OnExitedUniverse?.InvokeSafe(this, universe);
+        OnExitedUniverse?.Invoke(this, universe);
         return true;
     }
 
@@ -93,7 +93,7 @@ public class UniverseObject : BaseEntity, IUniverseObject
         }
 
         UpdateActive();
-        OnParentChanged?.InvokeSafe(this, previousParent, parent);
+        OnParentChanged?.Invoke(this, previousParent, parent);
     }
 
     public void AddChild(IUniverseObject parent)
@@ -103,7 +103,7 @@ public class UniverseObject : BaseEntity, IUniverseObject
 
         _children.Add(parent);
         parent.SetParent(this);
-        OnChildrenAdded?.InvokeSafe(this, parent);
+        OnChildrenAdded?.Invoke(this, parent);
     }
 
     public void RemoveChild(IUniverseObject child)
@@ -112,7 +112,7 @@ public class UniverseObject : BaseEntity, IUniverseObject
             return;
 
         child.SetParent(null);
-        OnChildrenRemoved?.InvokeSafe(this, child);
+        OnChildrenRemoved?.Invoke(this, child);
     }
 
     protected virtual void OnAssign(IBehaviourController behaviourController) { }
@@ -123,7 +123,7 @@ public class UniverseObject : BaseEntity, IUniverseObject
 
         _behaviourController = behaviourController;
         OnAssign(behaviourController);
-        OnBehaviourControllerAssigned?.InvokeSafe(this);
+        OnBehaviourControllerAssigned?.Invoke(this);
         return true;
     }
 
@@ -143,7 +143,7 @@ public class UniverseObject : BaseEntity, IUniverseObject
         _isActive = StateEnable.Enabled && (Parent?.IsActive ?? true);
 
         if (previousActive != IsActive)
-            OnActiveChanged?.InvokeSafe(this, previousActive);
+            OnActiveChanged?.Invoke(this, previousActive);
     }
 
     protected override void UnassignInternal()

Engine.Physics2D/Collider2DBehaviourBase.cs

@@ -69,7 +69,7 @@ public abstract class Collider2DBehaviourBase : Behaviour2D, ICollider2D
         Transform.OnRotationChanged -= SetNeedsRecalculationFromRotation;
     }
 
-    public void Detect(CollisionDetectionInformation collisionDetectionInformation) => OnCollisionDetected?.InvokeSafe(this, collisionDetectionInformation);
-    public void Resolve(CollisionDetectionInformation collisionDetectionInformation) => OnCollisionResolved?.InvokeSafe(this, collisionDetectionInformation);
-    public void Trigger(ICollider2D initiator) => OnTriggered?.InvokeSafe(this, initiator);
+    public void Detect(CollisionDetectionInformation collisionDetectionInformation) => OnCollisionDetected?.Invoke(this, collisionDetectionInformation);
+    public void Resolve(CollisionDetectionInformation collisionDetectionInformation) => OnCollisionResolved?.Invoke(this, collisionDetectionInformation);
+    public void Trigger(ICollider2D initiator) => OnTriggered?.Invoke(this, initiator);
 }

Engine.Physics2D/PhysicsEngine2D.cs

@@ -28,21 +28,21 @@ public class PhysicsEngine2D : UniverseObject, IPhysicsEngine2D
     {
         float intervalDeltaTime = deltaTime / IterationPerStep;
 
-        foreach (IPrePhysicsUpdate physicsPreUpdate in physicsPreUpdateCollector)
-            physicsPreUpdate.PrePhysicsUpdate(deltaTime);
+        for (int i = physicsPreUpdateCollector.Behaviours.Count - 1; i >= 0; i--)
+            physicsPreUpdateCollector.Behaviours[i].PrePhysicsUpdate(deltaTime);
 
-        foreach (IPhysicsUpdate physicsUpdate in physicsUpdateCollector)
-            physicsUpdate.PhysicsUpdate(deltaTime);
+        for (int i = physicsUpdateCollector.Behaviours.Count - 1; i >= 0; i--)
+            physicsUpdateCollector.Behaviours[i].PhysicsUpdate(deltaTime);
 
         for (int iterationIndex = 0; iterationIndex < IterationPerStep; iterationIndex++)
         {
             // Can Parallel
-            foreach (IRigidBody2D rigidBody in rigidBodyCollector)
-                StepRigidBody(rigidBody, intervalDeltaTime);
+            for (int i = rigidBodyCollector.Behaviours.Count - 1; i >= 0; i--)
+                StepRigidBody(rigidBodyCollector.Behaviours[i], intervalDeltaTime);
 
             // Can Parallel
-            foreach (ICollider2D collider in colliderCollector)
-                collider.Recalculate();
+            for (int i = colliderCollector.Behaviours.Count - 1; i >= 0; i--)
+                colliderCollector.Behaviours[i].Recalculate();
 
             // Can Parallel
             for (int x = 0; x < colliderCollector.Behaviours.Count; x++)
@@ -62,13 +62,13 @@ public class PhysicsEngine2D : UniverseObject, IPhysicsEngine2D
                 }
             }
 
-            OnPhysicsIteration?.InvokeSafe(this, intervalDeltaTime);
+            OnPhysicsIteration?.Invoke(this, intervalDeltaTime);
         }
 
-        foreach (IPostPhysicsUpdate physicsPostUpdate in physicsPostUpdateCollector)
-            physicsPostUpdate.PostPhysicsUpdate(deltaTime);
+        for (int i = physicsPostUpdateCollector.Behaviours.Count - 1; i >= 0; i--)
+            physicsPostUpdateCollector.Behaviours[i].PostPhysicsUpdate(deltaTime);
 
-        OnPhysicsStep?.InvokeSafe(this, deltaTime);
+        OnPhysicsStep?.Invoke(this, deltaTime);
     }
 
     public void StepIndividual(IRigidBody2D rigidBody, float deltaTime)
@@ -95,8 +95,8 @@ public class PhysicsEngine2D : UniverseObject, IPhysicsEngine2D
         {
             StepRigidBody(rigidBody, intervalDeltaTime);
 
-            foreach (ICollider2D collider in childColliders)
-                collider.Recalculate();
+            for (int i = childColliders.Count - 1; i >= 0; i--)
+                childColliders[i].Recalculate();
 
             for (int x = 0; x < childColliders.Count; x++)
             {

Engine.Physics2D/PhysicsEngine2DStandalone.cs

@@ -45,12 +45,12 @@ public class PhysicsEngine2DStandalone : IPhysicsEngine2D
         for (int iterationIndex = 0; iterationIndex < IterationPerStep; iterationIndex++)
         {
             // Can Parallel
-            for (int i = 0; i < rigidBodies.Count; i++)
+            for (int i = rigidBodies.Count - 1; i >= 0; i--)
                 StepRigidBody(rigidBodies[i], intervalDeltaTime);
 
             // Can Parallel
-            foreach (ICollider2D collider in colliders)
-                collider.Recalculate();
+            for (int i = colliders.Count - 1; i >= 0; i--)
+                colliders[i].Recalculate();
 
             // Can Parallel
             for (int x = 0; x < colliders.Count; x++)
@@ -68,9 +68,9 @@ public class PhysicsEngine2DStandalone : IPhysicsEngine2D
                     ResolveColliders(colliderX, colliderY);
                 }
             }
-            OnPhysicsIteration?.InvokeSafe(this, intervalDeltaTime);
+            OnPhysicsIteration?.Invoke(this, intervalDeltaTime);
         }
-        OnPhysicsStep?.InvokeSafe(this, deltaTime);
+        OnPhysicsStep?.Invoke(this, deltaTime);
     }
 
     public void StepIndividual(IRigidBody2D rigidBody, float deltaTime)

Engine.Systems/StateMachine/State.cs

@@ -53,12 +53,12 @@ public class State : BaseEntity, IState
     public void Update()
     {
         if (GetNextState() is IState transitionState)
-            OnStateTransitionReady?.InvokeSafe(this, transitionState);
-        OnStateUpdate?.InvokeSafe(this);
+            OnStateTransitionReady?.Invoke(this, transitionState);
+        OnStateUpdate?.Invoke(this);
     }
 
-    public void TransitionTo(IState from) => OnStateTransitionedTo?.InvokeSafe(this, from);
-    public void TransitionFrom(IState to) => OnStateTransitionedFrom?.InvokeSafe(this, to);
+    public void TransitionTo(IState from) => OnStateTransitionedTo?.Invoke(this, from);
+    public void TransitionFrom(IState to) => OnStateTransitionedFrom?.Invoke(this, to);
 
     public IState? GetNextState()
     {

Engine.Systems/StateMachine/StateBehaviourBase.cs

@@ -30,21 +30,21 @@ public abstract class StateBehaviourBase : Behaviour, IState
     public void Update()
     {
         OnUpdateState();
-        OnStateUpdate?.InvokeSafe(this);
+        OnStateUpdate?.Invoke(this);
     }
 
     protected virtual void OnTransitionedToState(IState from) { }
     public void TransitionTo(IState from)
     {
         OnTransitionedToState(from);
-        OnStateTransitionedTo?.InvokeSafe(this, from);
+        OnStateTransitionedTo?.Invoke(this, from);
     }
 
     protected virtual void OnTransitionedFromState(IState to) { }
     public void TransitionFrom(IState to)
     {
         OnTransitionedFromState(to);
-        OnStateTransitionedFrom?.InvokeSafe(this, to);
+        OnStateTransitionedFrom?.Invoke(this, to);
     }
 
     public abstract IState? GetNextState();

Engine.Systems/StateMachine/StateMachine.cs

@@ -23,7 +23,7 @@ public class StateMachine : Behaviour
             _state = value;
             previousState.TransitionFrom(value);
             value.TransitionTo(_state);
-            OnStateChanged?.InvokeSafe(this, previousState, value);
+            OnStateChanged?.Invoke(this, previousState, value);
 
             value.OnStateTransitionReady += OnStateTransitionReady;
         }

Engine.Systems/Time/StopwatchBehaviour.cs

@@ -35,7 +35,7 @@ public class StopwatchBehaviour : Behaviour, IStopwatch
         shouldBeTicking = false;
 
         State = TimerState.Stopped;
-        OnStopped?.InvokeSafe(this);
+        OnStopped?.Invoke(this);
     }
 
     protected override void OnUpdate()
@@ -46,7 +46,7 @@ public class StopwatchBehaviour : Behaviour, IStopwatch
         double delta = Universe.Time.DeltaSpan.TotalSeconds;
 
         Time += delta;
-        OnDelta?.InvokeSafe(this, delta);
+        OnDelta?.Invoke(this, delta);
     }
 
     protected override void OnEnteredUniverse(IUniverse universe)
@@ -71,13 +71,13 @@ public class StopwatchBehaviour : Behaviour, IStopwatch
     public virtual void Pause()
     {
         State = TimerState.Paused;
-        OnPaused?.InvokeSafe(this);
+        OnPaused?.Invoke(this);
     }
 
     public virtual void Resume()
     {
         State = TimerState.Ticking;
-        OnResumed?.InvokeSafe(this);
+        OnResumed?.Invoke(this);
     }
 
     private void StartStopwatch()
@@ -85,7 +85,7 @@ public class StopwatchBehaviour : Behaviour, IStopwatch
         hasStartedTickingBefore = true;
 
         State = TimerState.Ticking;
-        OnStarted?.InvokeSafe(this);
+        OnStarted?.Invoke(this);
     }
 
     protected override void OnFinalize()

Engine.Systems/Time/TickerBehaviour.cs

@@ -26,7 +26,7 @@ public class TickerBehaviour : StopwatchBehaviour, ITicker
         {
             nextTick += Period;
             TickCounter++;
-            OnTick?.InvokeSafe(this);
+            OnTick?.Invoke(this);
         }
     }
 

Engine.Systems/Time/TimerBehaviour.cs

@@ -50,7 +50,7 @@ public class TimerBehaviour : Behaviour, ITimer
         shouldBeTicking = false;
 
         State = TimerState.Stopped;
-        OnStopped?.InvokeSafe(this);
+        OnStopped?.Invoke(this);
     }
 
     protected override void OnUpdate()
@@ -61,7 +61,7 @@ public class TimerBehaviour : Behaviour, ITimer
         double delta = Universe.Time.DeltaSpan.TotalSeconds;
 
         Remaining -= delta;
-        OnDelta?.InvokeSafe(this, delta);
+        OnDelta?.Invoke(this, delta);
 
         if (Remaining <= .0f)
             Stop();
@@ -89,13 +89,13 @@ public class TimerBehaviour : Behaviour, ITimer
     public virtual void Pause()
     {
         State = TimerState.Paused;
-        OnPaused?.InvokeSafe(this);
+        OnPaused?.Invoke(this);
     }
 
     public virtual void Resume()
     {
         State = TimerState.Ticking;
-        OnResumed?.InvokeSafe(this);
+        OnResumed?.Invoke(this);
     }
 
     private void StartTimer()
@@ -103,7 +103,7 @@ public class TimerBehaviour : Behaviour, ITimer
         hasStartedTickingBefore = true;
 
         State = TimerState.Ticking;
-        OnStarted?.InvokeSafe(this);
+        OnStarted?.Invoke(this);
     }
 
     protected override void OnFinalize()

Engine.Systems/Tween/EngineExtensions/TweenAABBExtensions.cs

@@ -6,5 +6,5 @@ namespace Syntriax.Engine.Systems.Tween;
 public static class TweenAABBExtensions
 {
     public static ITween TweenAABB(this AABB initialAABB, ITweenManager tweenManager, float duration, AABB targetAABB, Action<AABB> setMethod)
-        => tweenManager.StartTween(duration, t => setMethod?.InvokeSafe(new AABB(initialAABB.LowerBoundary.Lerp(targetAABB.LowerBoundary, t), initialAABB.UpperBoundary.Lerp(targetAABB.UpperBoundary, t))));
+        => tweenManager.StartTween(duration, t => setMethod?.Invoke(new AABB(initialAABB.LowerBoundary.Lerp(targetAABB.LowerBoundary, t), initialAABB.UpperBoundary.Lerp(targetAABB.UpperBoundary, t))));
 }

Engine.Systems/Tween/EngineExtensions/TweenCircleExtensions.cs

@@ -6,7 +6,7 @@ public static class TweenCircleExtensions
 {
     public static ITween TweenCircle(this Circle initialCircle, ITweenManager tweenManager, float duration, Circle targetCircle, System.Action<Circle> setMethod)
         => tweenManager.StartTween(duration,
-            t => setMethod?.InvokeSafe(
+            t => setMethod?.Invoke(
                 new Circle(
                     initialCircle.Center.Lerp(targetCircle.Center, t),
                     initialCircle.Diameter.Lerp(targetCircle.Diameter, t)

Engine.Systems/Tween/EngineExtensions/TweenColorExtensions.cs

@@ -5,11 +5,11 @@ namespace Syntriax.Engine.Systems.Tween;
 public static class TweenColorExtensions
 {
     public static ITween TweenColor(this ColorRGB initialColorRGB, ITweenManager tweenManager, float duration, ColorRGB targetColorRGB, System.Action<ColorRGB> setMethod)
-        => tweenManager.StartTween(duration, t => setMethod?.InvokeSafe(initialColorRGB.Lerp(targetColorRGB, t)));
+        => tweenManager.StartTween(duration, t => setMethod?.Invoke(initialColorRGB.Lerp(targetColorRGB, t)));
 
     public static ITween TweenColor(this ColorRGBA initialColorRGBA, ITweenManager tweenManager, float duration, ColorRGBA targetColorRGBA, System.Action<ColorRGBA> setMethod)
-        => tweenManager.StartTween(duration, t => setMethod?.InvokeSafe(initialColorRGBA.Lerp(targetColorRGBA, t)));
+        => tweenManager.StartTween(duration, t => setMethod?.Invoke(initialColorRGBA.Lerp(targetColorRGBA, t)));
 
     public static ITween TweenColor(this ColorHSV initialColorHSV, ITweenManager tweenManager, float duration, ColorHSV targetColorHSV, System.Action<ColorHSV> setMethod)
-        => tweenManager.StartTween(duration, t => setMethod?.InvokeSafe(initialColorHSV.Lerp(targetColorHSV, t)));
+        => tweenManager.StartTween(duration, t => setMethod?.Invoke(initialColorHSV.Lerp(targetColorHSV, t)));
 }

Engine.Systems/Tween/EngineExtensions/TweenLine2DEquationExtensions.cs

@@ -6,7 +6,7 @@ public static class TweenLine2DEquationExtensions
 {
     public static ITween TweenLine2DEquation(this Line2DEquation initialLine2DEquation, ITweenManager tweenManager, float duration, Line2DEquation targetLine2DEquation, System.Action<Line2DEquation> setMethod)
         => tweenManager.StartTween(duration,
-            t => setMethod?.InvokeSafe(
+            t => setMethod?.Invoke(
                 new Line2DEquation(
                     initialLine2DEquation.Slope.Lerp(targetLine2DEquation.Slope, t),
                     initialLine2DEquation.OffsetY.Lerp(targetLine2DEquation.OffsetY, t)

Engine.Systems/Tween/EngineExtensions/TweenLine2DExtensions.cs

@@ -6,7 +6,7 @@ public static class TweenLine2DExtensions
 {
     public static ITween TweenLine2D(this Line2D initialLine2D, ITweenManager tweenManager, float duration, Line2D targetLine2D, System.Action<Line2D> setMethod)
         => tweenManager.StartTween(duration,
-            t => setMethod?.InvokeSafe(
+            t => setMethod?.Invoke(
                 new Line2D(
                     initialLine2D.From.Lerp(targetLine2D.From, t),
                     initialLine2D.To.Lerp(targetLine2D.To, t)

Engine.Systems/Tween/EngineExtensions/TweenProjection1DExtensions.cs

@@ -7,7 +7,7 @@ public static class TweenProjection1DExtensions
 {
     public static ITween TweenProjection1D(this Projection1D initialProjection1D, ITweenManager tweenManager, float duration, Projection1D targetProjection1D, Action<Projection1D> setMethod)
         => tweenManager.StartTween(duration,
-            t => setMethod?.InvokeSafe(
+            t => setMethod?.Invoke(
                 new Projection1D(
                     initialProjection1D.Min.Lerp(targetProjection1D.Min, t),
                     initialProjection1D.Max.Lerp(targetProjection1D.Max, t)

Engine.Systems/Tween/EngineExtensions/TweenQuaternionExtensions.cs

@@ -6,5 +6,5 @@ namespace Syntriax.Engine.Systems.Tween;
 public static class TweenQuaternionExtensions
 {
     public static ITween TweenQuaternion(this Quaternion initialQuaternion, ITweenManager tweenManager, float duration, Quaternion targetQuaternion, Action<Quaternion> setMethod)
-       => tweenManager.StartTween(duration, t => setMethod?.InvokeSafe(initialQuaternion.SLerp(targetQuaternion, t)));
+       => tweenManager.StartTween(duration, t => setMethod?.Invoke(initialQuaternion.SLerp(targetQuaternion, t)));
 }

Engine.Systems/Tween/EngineExtensions/TweenTriangleExtensions.cs

@@ -7,7 +7,7 @@ public static class TweenTriangleExtensions
 {
     public static ITween TweenTriangle(this Triangle initialTriangle, ITweenManager tweenManager, float duration, Triangle targetTriangle, Action<Triangle> setMethod)
        => tweenManager.StartTween(duration,
-            t => setMethod?.InvokeSafe(
+            t => setMethod?.Invoke(
                 new Triangle(
                     initialTriangle.A.Lerp(targetTriangle.A, t),
                     initialTriangle.B.Lerp(targetTriangle.B, t),

Engine.Systems/Tween/EngineExtensions/TweenVector2DExtensions.cs

@@ -5,5 +5,5 @@ namespace Syntriax.Engine.Systems.Tween;
 public static class TweenVector2DExtensions
 {
     public static ITween TweenVector2D(this Vector2D initialVector2D, ITweenManager tweenManager, float duration, Vector2D targetVector2D, System.Action<Vector2D> setMethod)
-        => tweenManager.StartTween(duration, t => setMethod?.InvokeSafe(initialVector2D.Lerp(targetVector2D, t)));
+        => tweenManager.StartTween(duration, t => setMethod?.Invoke(initialVector2D.Lerp(targetVector2D, t)));
 }

Engine.Systems/Tween/EngineExtensions/TweenVector3DExtensions.cs

@@ -5,5 +5,5 @@ namespace Syntriax.Engine.Systems.Tween;
 public static class TweenVector3DExtensions
 {
     public static ITween TweenVector3D(this Vector3D initialVector3D, ITweenManager tweenManager, float duration, Vector3D targetVector3D, System.Action<Vector3D> setMethod)
-        => tweenManager.StartTween(duration, t => setMethod?.InvokeSafe(initialVector3D.Lerp(targetVector3D, t)));
+        => tweenManager.StartTween(duration, t => setMethod?.Invoke(initialVector3D.Lerp(targetVector3D, t)));
 }

Engine.Systems/Tween/Tween.cs

@@ -26,14 +26,14 @@ internal class Tween : ITween
             _state = value;
             switch (value)
             {
-                case TweenState.Completed: OnCompleted?.InvokeSafe(this); OnEnded?.InvokeSafe(this); break;
-                case TweenState.Cancelled: OnCancelled?.InvokeSafe(this); OnEnded?.InvokeSafe(this); break;
-                case TweenState.Paused: OnPaused?.InvokeSafe(this); break;
+                case TweenState.Completed: OnCompleted?.Invoke(this); OnEnded?.Invoke(this); break;
+                case TweenState.Cancelled: OnCancelled?.Invoke(this); OnEnded?.Invoke(this); break;
+                case TweenState.Paused: OnPaused?.Invoke(this); break;
                 case TweenState.Playing:
                     if (previousState == TweenState.Idle)
-                        OnStarted?.InvokeSafe(this);
+                        OnStarted?.Invoke(this);
                     else
-                        OnResumed?.InvokeSafe(this);
+                        OnResumed?.Invoke(this);
                     break;
             }
         }
@@ -58,9 +58,9 @@ internal class Tween : ITween
 
             _counter = value.Min(Duration).Max(0f);
             Progress = Counter / Duration;
-            OnUpdated?.InvokeSafe(this);
+            OnUpdated?.Invoke(this);
 
-            OnDeltaUpdated?.InvokeSafe(this, Easing.Evaluate(Progress) - Easing.Evaluate(previousProgress));
+            OnDeltaUpdated?.Invoke(this, Easing.Evaluate(Progress) - Easing.Evaluate(previousProgress));
 
             if (_counter >= Duration)
                 State = TweenState.Completed;

Engine.Systems/Tween/TweenExtensions.cs

@@ -46,56 +46,56 @@ public static class TweenExtensions
     public static ITween OnStart(this ITween tween, Action callback)
     {
         Tween tweenConcrete = (Tween)tween;
-        tweenConcrete.OnStarted += _ => callback.InvokeSafe();
+        tweenConcrete.OnStarted += _ => callback.Invoke();
         return tween;
     }
 
     public static ITween OnPause(this ITween tween, Action callback)
     {
         Tween tweenConcrete = (Tween)tween;
-        tweenConcrete.OnPaused += _ => callback.InvokeSafe();
+        tweenConcrete.OnPaused += _ => callback.Invoke();
         return tween;
     }
 
     public static ITween OnResume(this ITween tween, Action callback)
     {
         Tween tweenConcrete = (Tween)tween;
-        tweenConcrete.OnResumed += _ => callback.InvokeSafe();
+        tweenConcrete.OnResumed += _ => callback.Invoke();
         return tween;
     }
 
     public static ITween OnCancel(this ITween tween, Action callback)
     {
         Tween tweenConcrete = (Tween)tween;
-        tweenConcrete.OnCancelled += _ => callback.InvokeSafe();
+        tweenConcrete.OnCancelled += _ => callback.Invoke();
         return tween;
     }
 
     public static ITween OnComplete(this ITween tween, Action callback)
     {
         Tween tweenConcrete = (Tween)tween;
-        tweenConcrete.OnCompleted += _ => callback.InvokeSafe();
+        tweenConcrete.OnCompleted += _ => callback.Invoke();
         return tween;
     }
 
     public static ITween OnEnd(this ITween tween, Action callback)
     {
         Tween tweenConcrete = (Tween)tween;
-        tweenConcrete.OnEnded += _ => callback.InvokeSafe();
+        tweenConcrete.OnEnded += _ => callback.Invoke();
         return tween;
     }
 
     public static ITween OnUpdate(this ITween tween, Action callback)
     {
         Tween tweenConcrete = (Tween)tween;
-        tweenConcrete.OnUpdated += _ => callback.InvokeSafe();
+        tweenConcrete.OnUpdated += _ => callback.Invoke();
         return tween;
     }
 
     public static ITween OnDeltaUpdate(this ITween tween, Action<float> callback)
     {
         Tween tweenConcrete = (Tween)tween;
-        tweenConcrete.OnDeltaUpdated += (_, delta) => callback.InvokeSafe(delta);
+        tweenConcrete.OnDeltaUpdated += (_, delta) => callback.Invoke(delta);
         return tween;
     }
 }

Engine.Systems/Tween/TweenManager.cs

@@ -14,7 +14,7 @@ public class TweenManager : UniverseObject, ITweenManager
     public ITween StartTween(float duration, ITweenManager.TweenSetCallback? setCallback = null)
     {
         Tween tween = new(duration);
-        tween.OnUpdated += tween => setCallback?.InvokeSafe(tween.Value);
+        tween.OnUpdated += tween => setCallback?.Invoke(tween.Value);
         runningCoroutines.Add(tween, coroutineManager.StartCoroutine(RunTween(tween)));
         return tween;
     }