refactor: Actions to Delegates

Engine

@@ -1 +1 @@
-Subproject commit d08495afbb7ca9f1afa2c8edcdaf0786bf095e9d
+Subproject commit ef21cdf2138a2f5107a628c0fe970b88bc03dcfd

Game/Abstract/IDisplayableShape.cs

@@ -0,0 +1,8 @@
+using Apos.Shapes;
+
+namespace Syntriax.Engine.Core.Abstract;
+
+public interface IDisplayableShape
+{
+    void Draw(ShapeBatch shapeBatch);
+}

Game/Abstract/IDisplayableSprite.cs

@@ -2,7 +2,7 @@ using Microsoft.Xna.Framework.Graphics;
 
 namespace Syntriax.Engine.Core.Abstract;
 
-public interface IDisplayable
+public interface IDisplayableSprite
 {
     public void Draw(SpriteBatch spriteBatch);
 }

Game/Behaviours/BallBehaviour.cs

@@ -0,0 +1,81 @@
+using System;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Physics2D;
+using Syntriax.Engine.Physics2D.Abstract;
+
+namespace Pong.Behaviours;
+
+public class BallBehaviour : BehaviourOverride
+{
+    public Vector2D StartDirection { get; private set; } = Vector2D.Zero;
+    public float Speed { get; set; } = 500f;
+    public float SpeedUpMultiplier { get; set; } = .0125f;
+
+    private readonly Random random = new();
+    private IRigidBody2D rigidBody = null!;
+
+    protected override void OnFirstActiveFrame()
+    {
+        if (!BehaviourController.TryGetBehaviour(out IRigidBody2D? foundRigidBody))
+            throw new Exception($"{nameof(IRigidBody2D)} is missing on {GameObject.Name}.");
+        if (!BehaviourController.TryGetBehaviour(out ICollider2D? foundCollider))
+            throw new Exception($"{nameof(ICollider2D)} is missing on {GameObject.Name}.");
+
+        foundCollider.OnCollisionDetected += OnCollisionDetected;
+
+        rigidBody = foundRigidBody;
+
+        if (GameObject.GameManager.TryFindBehaviour(out PongManagerBehaviour? pongManager))
+        {
+            pongManager.OnReset += ResetBall;
+            pongManager.OnScored += ResetBall;
+            pongManager.OnFinished += DisableBall;
+        }
+    }
+
+    private void DisableBall(PongManagerBehaviour pongManager)
+    {
+        BehaviourController.GameObject.Transform.Position = Vector2D.Zero;
+        rigidBody.Velocity = Vector2D.Zero;
+    }
+
+    private void ResetBall(PongManagerBehaviour pongManager)
+    {
+        StateEnable.Enabled = true;
+        BehaviourController.GameObject.Transform.Position = Vector2D.Zero;
+        rigidBody.Velocity = GetRandomDirection() * Speed;
+    }
+
+    private Vector2D GetRandomDirection()
+    {
+        const float AllowedRadians = 45f * Syntriax.Engine.Core.Math.DegreeToRadian;
+        float rotation = (float)random.NextDouble() * 2f * AllowedRadians - AllowedRadians;
+        bool isBackwards = (random.Next() % 2) == 1;
+        return Vector2D.Right.Rotate(isBackwards ? rotation + Syntriax.Engine.Core.Math.PI : rotation);
+    }
+
+    protected override void OnUpdate()
+    {
+        if (rigidBody.Velocity.MagnitudeSquared <= 0.01f)
+            return;
+
+        Vector2D speedUp = rigidBody.Velocity.Normalized * Time.DeltaTimeFrame;
+        rigidBody.Velocity += speedUp * SpeedUpMultiplier;
+    }
+
+    private void OnCollisionDetected(ICollider2D collider2D, CollisionDetectionInformation information)
+    {
+        if (Syntriax.Engine.Core.Math.Abs(information.Normal.Dot(Vector2D.Right)) > .25)
+            rigidBody.Velocity = information.Left.Transform.Position.FromTo(information.Right.Transform.Position).Normalized * rigidBody.Velocity.Magnitude;
+        else
+            rigidBody.Velocity = rigidBody.Velocity.Reflect(information.Normal);
+    }
+
+    public BallBehaviour() { }
+    public BallBehaviour(Vector2D startDirection, float speed)
+    {
+        StartDirection = Vector2D.Normalize(startDirection);
+        Speed = speed;
+    }
+}

Game/Behaviours/CameraController.cs

@@ -0,0 +1,74 @@
+using Microsoft.Xna.Framework.Input;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Input;
+
+namespace Pong.Behaviours;
+
+public class CameraController : BehaviourOverride
+{
+    private MonoGameCamera2DBehaviour cameraBehaviour = null!;
+    private IButtonInputs<Keys> buttonInputs = null!;
+
+    private float defaultZoomLevel = 1f;
+
+    protected override void OnFirstActiveFrame()
+    {
+        if (BehaviourController.TryGetBehaviour(out MonoGameCamera2DBehaviour? foundCameraBehaviour))
+            cameraBehaviour = foundCameraBehaviour;
+
+        cameraBehaviour ??= BehaviourController.AddBehaviour<MonoGameCamera2DBehaviour>();
+
+        if (BehaviourController.TryGetBehaviour(out IButtonInputs<Keys>? foundButtonInputs))
+            buttonInputs = foundButtonInputs;
+
+        buttonInputs ??= BehaviourController.AddBehaviour<KeyboardInputsBehaviour>();
+        buttonInputs.RegisterOnPress(Keys.F, SwitchToFullScreen);
+        buttonInputs.RegisterOnPress(Keys.R, ResetCamera);
+    }
+
+    protected override void OnUpdate()
+    {
+        if (buttonInputs.IsPressed(Keys.U))
+            cameraBehaviour.Zoom += Time.Elapsed.Nanoseconds * 0.00025f;
+        if (buttonInputs.IsPressed(Keys.J))
+            cameraBehaviour.Zoom -= Time.Elapsed.Nanoseconds * 0.00025f;
+
+
+        if (buttonInputs.IsPressed(Keys.NumPad8)) cameraBehaviour.BehaviourController.GameObject.Transform.Position += Vector2D.Up.Rotate(Transform.Rotation * Math.DegreeToRadian) * Time.DeltaTimeFrame;
+        if (buttonInputs.IsPressed(Keys.NumPad2)) cameraBehaviour.BehaviourController.GameObject.Transform.Position -= Vector2D.Up.Rotate(Transform.Rotation * Math.DegreeToRadian) * Time.DeltaTimeFrame;
+        if (buttonInputs.IsPressed(Keys.NumPad6)) cameraBehaviour.BehaviourController.GameObject.Transform.Position += Vector2D.Right.Rotate(Transform.Rotation * Math.DegreeToRadian) * Time.DeltaTimeFrame;
+        if (buttonInputs.IsPressed(Keys.NumPad4)) cameraBehaviour.BehaviourController.GameObject.Transform.Position -= Vector2D.Right.Rotate(Transform.Rotation * Math.DegreeToRadian) * Time.DeltaTimeFrame;
+
+
+        if (buttonInputs.IsPressed(Keys.Q))
+            cameraBehaviour.BehaviourController.GameObject.Transform.Rotation += Time.Elapsed.Nanoseconds * 0.0025f;
+        if (buttonInputs.IsPressed(Keys.E))
+            cameraBehaviour.BehaviourController.GameObject.Transform.Rotation -= Time.Elapsed.Nanoseconds * 0.0025f;
+    }
+
+    private void SwitchToFullScreen(IButtonInputs<Keys> inputs, Keys keys)
+    {
+        if (cameraBehaviour.Graphics.IsFullScreen)
+            return;
+
+        cameraBehaviour.Graphics.PreferMultiSampling = false;
+        cameraBehaviour.Graphics.PreferredBackBufferWidth = cameraBehaviour.Graphics.GraphicsDevice.Adapter.CurrentDisplayMode.Width;
+        cameraBehaviour.Graphics.PreferredBackBufferHeight = cameraBehaviour.Graphics.GraphicsDevice.Adapter.CurrentDisplayMode.Height;
+        cameraBehaviour.Graphics.IsFullScreen = true;
+        cameraBehaviour.Graphics.ApplyChanges();
+
+        float previousScreenSize = Math.Sqrt(Math.Sqr(cameraBehaviour.Viewport.Width) + Math.Sqr(cameraBehaviour.Viewport.Height));
+        float currentScreenSize = Math.Sqrt(Math.Sqr(cameraBehaviour.Graphics.GraphicsDevice.Viewport.Width) + Math.Sqr(cameraBehaviour.Graphics.GraphicsDevice.Viewport.Height));
+        defaultZoomLevel /= previousScreenSize / currentScreenSize;
+        cameraBehaviour.Zoom /= previousScreenSize / currentScreenSize;
+        cameraBehaviour.Viewport = cameraBehaviour.Graphics.GraphicsDevice.Viewport;
+    }
+
+    private void ResetCamera(IButtonInputs<Keys> inputs, Keys keys)
+    {
+        cameraBehaviour.Zoom = defaultZoomLevel;
+        Transform.Position = Vector2D.Zero;
+        Transform.Rotation = 0f;
+    }
+}

Game/Behaviours/CircleBehaviour.cs

@@ -0,0 +1,29 @@
+using Microsoft.Xna.Framework;
+
+using Apos.Shapes;
+
+using Syntriax.Engine.Core.Abstract;
+using Syntriax.Engine.Physics2D.Primitives;
+
+namespace Pong.Behaviours;
+
+public class CircleBehaviour : Syntriax.Engine.Physics2D.Collider2DCircleBehaviour, IDisplayableShape
+{
+    public Color Color { get; set; } = Color.White;
+    public float Thickness { get; set; } = .5f;
+
+    public void Draw(ShapeBatch shapeBatch)
+    {
+        if (!IsActive)
+            return;
+
+        Recalculate();
+
+        shapeBatch.BorderCircle(CircleWorld.Center.ToDisplayVector2(), CircleWorld.Radius, Color);
+    }
+
+    public CircleBehaviour(Circle circle) : base(circle) { }
+    public CircleBehaviour(Circle circle, float thickness) : base(circle) { Thickness = thickness; }
+    public CircleBehaviour(Circle circle, Color color) : base(circle) { Color = color; }
+    public CircleBehaviour(Circle circle, Color color, float thickness) : base(circle) { Thickness = thickness; Color = color; }
+}

Game/Behaviours/MonoGameCamera2DBehaviour.cs

@@ -0,0 +1,106 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Core.Abstract;
+
+namespace Pong.Behaviours;
+
+public class MonoGameCamera2DBehaviour(GraphicsDeviceManager Graphics) : BehaviourOverride, ICamera2D
+{
+    public event OnMatrixTransformChangedDelegate? OnMatrixTransformChanged = null;
+    public event OnViewportChangedDelegate? OnViewportChanged = null;
+    public event OnZoomChangedDelegate? OnZoomChanged = null;
+
+    private Matrix _matrixTransform = Matrix.Identity;
+
+    private Viewport _viewport = default;
+    private float _zoom = 1f;
+
+    public GraphicsDeviceManager Graphics { get; } = Graphics;
+
+    public Matrix MatrixTransform
+    {
+        get => _matrixTransform;
+        set
+        {
+            if (_matrixTransform == value)
+                return;
+
+            _matrixTransform = value;
+            OnMatrixTransformChanged?.Invoke(this);
+        }
+    }
+
+    public Vector2D Position
+    {
+        get => Transform.Position;
+        set => Transform.Position = value;
+    }
+
+    public Viewport Viewport
+    {
+        get => _viewport;
+        set
+        {
+            if (_viewport.Equals(value))
+                return;
+
+            _viewport = value;
+            OnViewportChanged?.Invoke(this);
+        }
+    }
+
+    public float Zoom
+    {
+        get => _zoom;
+        set
+        {
+            float newValue = Math.Max(0.1f, value);
+
+            if (_zoom == newValue)
+                return;
+
+            _zoom = newValue;
+            OnZoomChanged?.Invoke(this);
+        }
+    }
+
+    public float Rotation
+    {
+        get => Transform.Rotation;
+        set => Transform.Rotation = value;
+    }
+
+    public event IAssignableTransform.OnTransformAssignedDelegate? OnTransformAssigned { add => GameObject.OnTransformAssigned += value; remove => GameObject.OnTransformAssigned -= value; }
+    ITransform IAssignableTransform.Transform => GameObject.Transform;
+    bool IAssignableTransform.Assign(ITransform transform) => GameObject.Assign(transform);
+
+    // TODO This causes delay since OnPreDraw calls assuming this is called in in Update 
+    public Vector2D ScreenToWorldPosition(Vector2D screenPosition)
+    {
+        Vector2D worldPosition = Vector2.Transform(screenPosition.ToVector2(), Matrix.Invert(MatrixTransform)).ToVector2D();
+        return worldPosition.Scale(EngineConverter.screenScale);
+    }
+    public Vector2D WorldToScreenPosition(Vector2D worldPosition)
+    {
+        Vector2D screenPosition = Vector2.Transform(worldPosition.ToVector2(), MatrixTransform).ToVector2D();
+        return screenPosition.Scale(EngineConverter.screenScale);
+    }
+
+    protected override void OnFirstActiveFrame()
+        => Viewport = Graphics.GraphicsDevice.Viewport;
+
+    protected override void OnPreDraw()
+    {
+        MatrixTransform =
+            Matrix.CreateTranslation(new Vector3(-Position.X, Position.Y, 0f)) *
+            Matrix.CreateRotationZ(Rotation * Math.DegreeToRadian) *
+            Matrix.CreateScale(Zoom) *
+            Matrix.CreateTranslation(new Vector3(_viewport.Width * .5f, _viewport.Height * .5f, 0f));
+    }
+
+    public delegate void OnMatrixTransformChangedDelegate(MonoGameCamera2DBehaviour sender);
+    public delegate void OnViewportChangedDelegate(MonoGameCamera2DBehaviour sender);
+    public delegate void OnZoomChangedDelegate(MonoGameCamera2DBehaviour sender);
+}

Game/Behaviours/MonoGameCameraBehaviour.cs

@@ -1,106 +0,0 @@
-using System;
-
-using Microsoft.Xna.Framework;
-using Microsoft.Xna.Framework.Graphics;
-
-using Syntriax.Engine.Core;
-using Syntriax.Engine.Core.Abstract;
-
-namespace Pong.Behaviours;
-
-public class MonoGameCameraBehaviour : BehaviourOverride, ICamera
-{
-    public Action<ICamera>? OnPositionChanged { get; set; } = null;
-    public Action<ICamera>? OnMatrixTransformChanged { get; set; } = null;
-    public Action<ICamera>? OnViewportChanged { get; set; } = null;
-    public Action<ICamera>? OnRotationChanged { get; set; } = null;
-    public Action<ICamera>? OnZoomChanged { get; set; } = null;
-
-    private Matrix _matrixTransform = Matrix.Identity;
-
-    private Viewport _viewport = default;
-
-    private float _zoom = 1f;
-
-    public Matrix MatrixTransform
-    {
-        get => _matrixTransform;
-        set
-        {
-            if (_matrixTransform == value)
-                return;
-
-            _matrixTransform = value;
-            OnMatrixTransformChanged?.Invoke(this);
-        }
-    }
-
-    public Vector2D Position
-    {
-        get => Transform.Position;
-        set => Transform.Position = value;
-    }
-
-    public Viewport Viewport
-    {
-        get => _viewport;
-        set
-        {
-            if (_viewport.Equals(value))
-                return;
-
-            _viewport = value;
-            OnViewportChanged?.Invoke(this);
-        }
-    }
-
-    public float Zoom
-    {
-        get => _zoom;
-        set
-        {
-            float newValue = value >= .1f ? value : .1f;
-
-            if (_zoom == newValue)
-                return;
-
-            _zoom = newValue;
-            OnZoomChanged?.Invoke(this);
-        }
-    }
-
-    public float Rotation
-    {
-        get => Transform.Rotation;
-        set => Transform.Rotation = value;
-    }
-    public Action<IAssignableTransform>? OnTransformAssigned { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
-
-    ITransform IAssignableTransform.Transform => throw new NotImplementedException();
-
-    public void Update()
-    {
-        MatrixTransform =
-            Matrix.CreateTranslation(new Vector3(-Position.X, Position.Y, 0f)) *
-            Matrix.CreateRotationZ(Rotation) *
-            Matrix.CreateScale(Zoom) *
-            Matrix.CreateTranslation(new Vector3(_viewport.Width * .5f, _viewport.Height * .5f, 0f));
-    }
-
-    protected override void OnInitialize()
-    {
-        Transform.OnRotationChanged += OnTransformRotationChanged;
-        Transform.OnPositionChanged += OnTransformPositionChanged;
-    }
-
-    protected override void OnFinalize()
-    {
-        Transform.OnRotationChanged -= OnTransformRotationChanged;
-        Transform.OnPositionChanged -= OnTransformPositionChanged;
-    }
-
-    private void OnTransformRotationChanged(ITransform _) => OnRotationChanged?.Invoke(this);
-    private void OnTransformPositionChanged(ITransform _) => OnPositionChanged?.Invoke(this);
-
-    public bool Assign(ITransform transform) => GameObject.Assign(transform);
-}

Game/Behaviours/MovementBallBehaviour.cs

@@ -1,50 +1,53 @@
 using System;
-using Microsoft.Xna.Framework;
+
-using Microsoft.Xna.Framework.Input;
 using Syntriax.Engine.Core;
-using Syntriax.Engine.Input;
+using Syntriax.Engine.Physics2D;
 using Syntriax.Engine.Physics2D.Abstract;
 
 namespace Pong.Behaviours;
-public class MovementBallBehaviour(Vector2D StartDirection, float Speed) : BehaviourOverride
+
+public class MovementBallBehaviour : BehaviourOverride
 {
-    public Vector2D StartDirection { get; private set; } = Vector2D.Normalize(StartDirection);
+    public Vector2D StartDirection { get; private set; } = Vector2D.Zero;
-    public float Speed { get; set; } = Speed;
+    public float Speed { get; set; } = 500f;
+    public float SpeedUpMultiplier { get; set; } = .0125f;
+
+    private IRigidBody2D rigidBody = null!;
 
     protected override void OnFirstActiveFrame()
     {
-        if (!BehaviourController.TryGetBehaviour(out IRigidBody2D? rigidBody))
+        if (!BehaviourController.TryGetBehaviour(out IRigidBody2D? foundRigidBody))
-            throw new Exception($"Where's my {nameof(IRigidBody2D)}????");
+            throw new Exception($"{nameof(IRigidBody2D)} is missing on {GameObject.Name}.");
+        if (!BehaviourController.TryGetBehaviour(out ICollider2D? foundCollider))
+            throw new Exception($"{nameof(ICollider2D)} is missing on {GameObject.Name}.");
 
-        rigidBody.Velocity = StartDirection * Speed;
+        foundRigidBody.Velocity = StartDirection * Speed;
+        foundCollider.OnCollisionDetected += OnCollisionDetected;
+
+        rigidBody = foundRigidBody;
     }
 
-    // protected override void OnUpdate(GameTime time)
+    protected override void OnUpdate()
-    // {
+    {
-    //     GameObject.Transform.Position += StartDirection * (time.ElapsedGameTime.Nanoseconds * .001f) * Speed;
+        if (rigidBody.Velocity.MagnitudeSquared <= 0.01f)
+            return;
 
-    //     float absY = MathF.Abs(GameObject.Transform.Position.Y);
+        Vector2D speedUp = rigidBody.Velocity.Normalized * Time.DeltaTimeFrame;
-    //     float differenceY = absY - PlayAreaBehaviour.PlayArea.Y * 0.5f;
+        rigidBody.Velocity += speedUp * SpeedUpMultiplier;
-    //     if (differenceY > 0f)
+    }
-    //     {
-    //         if (GameObject.Transform.Position.Y > 0f)
-    //             GameObject.Transform.Position -= Vector2.UnitY * differenceY * 2f;
-    //         else
-    //             GameObject.Transform.Position += Vector2.UnitY * differenceY * 2f;
 
-    //         StartDirection = new(StartDirection.X, -StartDirection.Y);
+    private void OnCollisionDetected(ICollider2D collider2D, CollisionDetectionInformation information)
-    //     }
+    {
+        if (Syntriax.Engine.Core.Math.Abs(information.Normal.Dot(Vector2D.Right)) > .25)
+            rigidBody.Velocity = information.Left.Transform.Position.FromTo(information.Right.Transform.Position).Normalized * rigidBody.Velocity.Magnitude;
+        else
+            rigidBody.Velocity = rigidBody.Velocity.Reflect(information.Normal);
+    }
 
-    //     float absX = MathF.Abs(GameObject.Transform.Position.X);
+    public MovementBallBehaviour() { }
-    //     float differenceX = absX - PlayAreaBehaviour.PlayArea.X * 0.5f;
+    public MovementBallBehaviour(Vector2D startDirection, float speed)
-    //     if (differenceX > 0f)
+    {
-    //     {
+        StartDirection = Vector2D.Normalize(startDirection);
-    //         if (GameObject.Transform.Position.X > 0f)
+        Speed = speed;
-    //             GameObject.Transform.Position -= Vector2.UnitX * differenceX * 2f;
+    }
-    //         else
-    //             GameObject.Transform.Position += Vector2.UnitX * differenceX * 2f;
-
-    //         StartDirection = new(-StartDirection.X, StartDirection.Y);
-    //     }
-    // }
 }

Game/Behaviours/PaddleBehaviour.cs

@@ -1,12 +1,13 @@
 using System;
-using Microsoft.Xna.Framework;
+
 using Microsoft.Xna.Framework.Input;
+
 using Syntriax.Engine.Core;
 using Syntriax.Engine.Input;
 
 namespace Pong.Behaviours;
 
-public class MovementBoxBehaviour(Keys Up, Keys Down, float High, float Low, float Speed) : BehaviourOverride
+public class PaddleBehaviour(Keys Up, Keys Down, float High, float Low, float Speed) : BehaviourOverride
 {
     private Keys Up { get; } = Up;
     private Keys Down { get; } = Down;
@@ -35,9 +36,7 @@ public class MovementBoxBehaviour(Keys Up, Keys Down, float High, float Low, flo
     protected override void OnFirstActiveFrame()
     {
         if (!BehaviourController.TryGetBehaviour<IButtonInputs<Keys>>(out var behaviourResult))
-            throw new Exception($"{nameof(IButtonInputs<Keys>)} is missing on ${GameObject.Name}.");
+            inputs = behaviourResult ?? BehaviourController.AddBehaviour<KeyboardInputsBehaviour>();
-
-        inputs = behaviourResult;
 
         inputs.RegisterOnPress(Up, OnUpPressed);
         inputs.RegisterOnRelease(Up, OnUpReleased);

Game/Behaviours/PlayAreaBehaviour.cs

@@ -1,26 +0,0 @@
-using System;
-using Microsoft.Xna.Framework;
-using Syntriax.Engine.Core;
-
-namespace Pong.Behaviours;
-
-public class PlayAreaBehaviour : BehaviourOverride
-{
-    public Action<PlayAreaBehaviour>? OnPlayAreaChanged { get; set; } = null;
-
-    private Vector2 _playArea = Vector2.Zero;
-
-    public Vector2 PlayArea
-    {
-        get => _playArea;
-        set
-        {
-            if (_playArea == value)
-                return;
-
-            _playArea = value;
-            OnPlayAreaChanged?.Invoke(this);
-        }
-    }
-
-}

Game/Behaviours/PongManagerBehaviour.cs

@@ -0,0 +1,64 @@
+using System;
+
+using Microsoft.Xna.Framework.Input;
+
+using Syntriax.Engine.Core;
+
+namespace Pong.Behaviours;
+
+public class PongManagerBehaviour : BehaviourOverride
+{
+    public Action<PongManagerBehaviour>? OnReset { get; set; } = null;
+    public Action<PongManagerBehaviour>? OnFinished { get; set; } = null;
+    public Action<PongManagerBehaviour>? OnScored { get; set; } = null;
+
+    public int ScoreLeft { get; private set; } = 0;
+    public int ScoreRight { get; private set; } = 0;
+    public int ScoreSum => ScoreLeft + ScoreRight;
+
+    public int WinScore { get; } = 5;
+
+    public PongManagerBehaviour() => WinScore = 5;
+    public PongManagerBehaviour(int winScore) => WinScore = winScore;
+
+    protected override void OnFirstActiveFrame()
+    {
+        KeyboardInputsBehaviour? buttonInputs = null!;
+
+        if (!BehaviourController.TryGetBehaviour(out buttonInputs))
+            buttonInputs = BehaviourController.AddBehaviour<KeyboardInputsBehaviour>();
+
+        buttonInputs.RegisterOnRelease(Keys.Space, (_, _1) => Reset());
+    }
+
+
+    public void ScoreToLeft()
+    {
+        ScoreLeft++;
+        OnScored?.Invoke(this);
+
+        CheckFinish();
+    }
+
+    public void ScoreToRight()
+    {
+        ScoreRight++;
+        OnScored?.Invoke(this);
+
+        CheckFinish();
+    }
+
+    public void Reset()
+    {
+        ScoreLeft = ScoreRight = 0;
+        OnReset?.Invoke(this);
+    }
+
+    private void CheckFinish()
+    {
+        int halfwayScore = (int)(WinScore * .5f);
+
+        if (ScoreLeft > halfwayScore || ScoreRight > halfwayScore)
+            OnFinished?.Invoke(this);
+    }
+}

Game/Behaviours/ShapeAABBBehaviour.cs

@@ -0,0 +1,48 @@
+using Microsoft.Xna.Framework;
+
+using Apos.Shapes;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Core.Abstract;
+using Syntriax.Engine.Input;
+using Syntriax.Engine.Physics2D.Abstract;
+using Syntriax.Engine.Physics2D.Primitives;
+
+namespace Pong.Behaviours;
+
+public class ShapeAABBBehaviour : BehaviourOverride, IDisplayableShape
+{
+    private IShapeCollider2D? shapeCollider = null;
+
+    public Color Color { get; set; } = Color.White;
+    public float Thickness { get; set; } = .5f;
+    public bool display = true;
+
+    protected override void OnFirstActiveFrame()
+    {
+        BehaviourController.TryGetBehaviour(out shapeCollider);
+
+        if (BehaviourController.TryGetBehaviour(out IButtonInputs<Microsoft.Xna.Framework.Input.Keys>? keys))
+            keys.RegisterOnPress(Microsoft.Xna.Framework.Input.Keys.D, (_1, _2) => display = !display);
+    }
+
+    public void Draw(ShapeBatch shapeBatch)
+    {
+        if (!display)
+            return;
+
+        if (shapeCollider is null)
+            return;
+
+        AABB aabb = AABB.FromVectors(shapeCollider.ShapeWorld);
+
+        shapeBatch.BorderCircle(aabb.Center.ToDisplayVector2(), 7.5f, Color.Beige);
+
+        shapeBatch.DrawRectangle(aabb.Center.ApplyDisplayScale().Subtract(aabb.SizeHalf).ToVector2(), aabb.Size.ToVector2(), Color.Transparent, Color.Blue);
+    }
+
+    public ShapeAABBBehaviour() { }
+    public ShapeAABBBehaviour(float Thickness) { this.Thickness = Thickness; }
+    public ShapeAABBBehaviour(Color color) { Color = color; }
+    public ShapeAABBBehaviour(Color color, float Thickness) { this.Thickness = Thickness; Color = color; }
+}

Game/Behaviours/ShapeBehaviour.cs

@@ -0,0 +1,33 @@
+using Microsoft.Xna.Framework;
+
+using Apos.Shapes;
+
+using Syntriax.Engine.Core.Abstract;
+using Syntriax.Engine.Physics2D.Primitives;
+
+namespace Pong.Behaviours;
+
+public class ShapeBehaviour : Syntriax.Engine.Physics2D.Collider2DShapeBehaviour, IDisplayableShape
+{
+    public Color Color { get; set; } = Color.White;
+    public float Thickness { get; set; } = .5f;
+
+    public void Draw(ShapeBatch shapeBatch)
+    {
+        if (!IsActive)
+            return;
+
+        Recalculate();
+
+        int count = ShapeWorld.Vertices.Count;
+
+        for (int i = 0; i < count - 1; i++)
+            shapeBatch.DrawLine(ShapeWorld[i].ToDisplayVector2(), ShapeWorld[i + 1].ToDisplayVector2(), Thickness, Color, Color);
+        shapeBatch.DrawLine(ShapeWorld[0].ToDisplayVector2(), ShapeWorld[^1].ToDisplayVector2(), Thickness, Color, Color);
+    }
+
+    public ShapeBehaviour(Shape shape) : base(shape) { }
+    public ShapeBehaviour(Shape shape, float thickness) : base(shape) { Thickness = thickness; }
+    public ShapeBehaviour(Shape shape, Color color) : base(shape) { Color = color; }
+    public ShapeBehaviour(Shape shape, Color color, float thickness) : base(shape) { Thickness = thickness; Color = color; }
+}

Game/Behaviours/TextBehaviour.cs

@@ -0,0 +1,25 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Core.Abstract;
+
+namespace Pong.Behaviours;
+
+public class TextBehaviour : BehaviourOverride, IDisplayableSprite
+{
+    public SpriteFont? Font { get; set; } = null;
+    public int Size { get; set; } = 16;
+    public string Text { get; set; } = string.Empty;
+
+    public void Draw(SpriteBatch spriteBatch)
+    {
+        if (!IsActive || Font is null)
+            return;
+
+        spriteBatch.DrawString(Font, Text, Transform.Position.ToDisplayVector2(), Color.White, Transform.Rotation, Vector2.One * .5f, Transform.Scale.Magnitude, SpriteEffects.None, 0f);
+    }
+
+    public TextBehaviour() { }
+    public TextBehaviour(SpriteFont font) => Font = font;
+}

Game/Behaviours/TextScoreBehaviour.cs

@@ -0,0 +1,33 @@
+using Microsoft.Xna.Framework.Graphics;
+using Syntriax.Engine.Core;
+
+namespace Pong.Behaviours;
+
+public class TextScoreBehaviour : TextBehaviour
+{
+    public bool IsLeft { get; }
+
+    private PongManagerBehaviour? pongManager = null;
+
+    protected override void OnFirstActiveFrame()
+    {
+        if (!GameObject.GameManager.TryFindBehaviour(out pongManager))
+            return;
+
+        pongManager.OnScored += UpdateScores;
+        pongManager.OnReset += UpdateScores;
+
+        UpdateScores(pongManager);
+    }
+
+    private void UpdateScores(PongManagerBehaviour pongManager)
+    {
+        if (IsLeft)
+            Text = pongManager.ScoreLeft.ToString();
+        else
+            Text = pongManager.ScoreRight.ToString();
+    }
+
+    public TextScoreBehaviour(bool IsLeft) => this.IsLeft = IsLeft;
+    public TextScoreBehaviour(bool IsLeft, SpriteFont font) : base(font) => this.IsLeft = IsLeft;
+}

Game/Behaviours/WallScoreBehaviour.cs

@@ -0,0 +1,19 @@
+using System;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Physics2D.Abstract;
+
+namespace Pong.Behaviours;
+
+public class WallScoreBehaviour(Action OnCollision) : BehaviourOverride
+{
+    private Action OnCollision { get; } = OnCollision;
+
+    protected override void OnFirstActiveFrame()
+    {
+        if (!BehaviourController.TryGetBehaviour(out ICollider2D? collider2D))
+            return;
+
+        collider2D.OnCollisionDetected += (_, _1) => OnCollision?.Invoke();
+    }
+}

Game/Content/Content.mgcb

@@ -13,51 +13,10 @@
 
 #---------------------------------- Content ---------------------------------#
 
-#begin Sprites/Circle.png
+#begin UbuntuMono.spritefont
-/importer:TextureImporter
+/importer:FontDescriptionImporter
-/processor:TextureProcessor
+/processor:FontDescriptionProcessor
-/processorParam:ColorKeyColor=255,0,255,255
-/processorParam:ColorKeyEnabled=True
-/processorParam:GenerateMipmaps=False
 /processorParam:PremultiplyAlpha=True
-/processorParam:ResizeToPowerOfTwo=False
+/processorParam:TextureFormat=Compressed
-/processorParam:MakeSquare=False
+/build:UbuntuMono.spritefont
-/processorParam:TextureFormat=Color
-/build:Sprites/Circle.png
-
-#begin Sprites/Circle.png
-/importer:TextureImporter
-/processor:TextureProcessor
-/processorParam:ColorKeyColor=255,0,255,255
-/processorParam:ColorKeyEnabled=True
-/processorParam:GenerateMipmaps=False
-/processorParam:PremultiplyAlpha=True
-/processorParam:ResizeToPowerOfTwo=False
-/processorParam:MakeSquare=False
-/processorParam:TextureFormat=Color
-/build:Sprites/Circle.png
-
-#begin Sprites/Pixel.png
-/importer:TextureImporter
-/processor:TextureProcessor
-/processorParam:ColorKeyColor=255,0,255,255
-/processorParam:ColorKeyEnabled=True
-/processorParam:GenerateMipmaps=False
-/processorParam:PremultiplyAlpha=True
-/processorParam:ResizeToPowerOfTwo=False
-/processorParam:MakeSquare=False
-/processorParam:TextureFormat=Color
-/build:Sprites/Pixel.png
-
-#begin Sprites/Pixel.png
-/importer:TextureImporter
-/processor:TextureProcessor
-/processorParam:ColorKeyColor=255,0,255,255
-/processorParam:ColorKeyEnabled=True
-/processorParam:GenerateMipmaps=False
-/processorParam:PremultiplyAlpha=True
-/processorParam:ResizeToPowerOfTwo=False
-/processorParam:MakeSquare=False
-/processorParam:TextureFormat=Color
-/build:Sprites/Pixel.png
 

Game/Content/UbuntuMono.spritefont

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+This file contains an xml description of a font, and will be read by the XNA
+Framework Content Pipeline. Follow the comments to customize the appearance
+of the font in your game, and to change the characters which are available to draw
+with.
+-->
+<XnaContent xmlns:Graphics="Microsoft.Xna.Framework.Content.Pipeline.Graphics">
+  <Asset Type="Graphics:FontDescription">
+
+    <!--
+    Modify this string to change the font that will be imported.
+    -->
+    <FontName>Ubuntu Mono</FontName>
+
+    <!--
+    Size is a float value, measured in points. Modify this value to change
+    the size of the font.
+    -->
+    <Size>144</Size>
+
+    <!--
+    Spacing is a float value, measured in pixels. Modify this value to change
+    the amount of spacing in between characters.
+    -->
+    <Spacing>0</Spacing>
+
+    <!--
+    UseKerning controls the layout of the font. If this value is true, kerning information
+    will be used when placing characters.
+    -->
+    <UseKerning>true</UseKerning>
+
+    <!--
+    Style controls the style of the font. Valid entries are "Regular", "Bold", "Italic",
+    and "Bold, Italic", and are case sensitive.
+    -->
+    <Style>Bold</Style>
+
+    <!--
+    If you uncomment this line, the default character will be substituted if you draw
+    or measure text that contains characters which were not included in the font.
+    -->
+    <!-- <DefaultCharacter>*</DefaultCharacter> -->
+
+    <!--
+    CharacterRegions control what letters are available in the font. Every
+    character from Start to End will be built and made available for drawing. The
+    default range is from 32, (ASCII space), to 126, ('~'), covering the basic Latin
+    character set. The characters are ordered according to the Unicode standard.
+    See the documentation for more information.
+    -->
+    <CharacterRegions>
+      <CharacterRegion>
+        <Start>&#32;</Start>
+        <End>&#126;</End>
+      </CharacterRegion>
+    </CharacterRegions>
+  </Asset>
+</XnaContent>

Game/EngineConverter.cs

@@ -6,10 +6,18 @@ namespace Pong;
 
 public static class EngineConverter
 {
+    public readonly static Vector2D screenScale = Vector2D.Down + Vector2D.Right;
+
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static EngineTime ToEngineTime(this GameTime gameTime) => new(gameTime.TotalGameTime, gameTime.ElapsedGameTime);
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static Vector2D ToVector2D(this Vector2 vector) => new(vector.X, vector.Y);
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2D ToVector2D(this Point point) => new(point.X, point.Y);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static Vector2 ToVector2(this Vector2D vector) => new(vector.X, vector.Y);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2 ToDisplayVector2(this Vector2D vector) => vector.Scale(screenScale).ToVector2();
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Vector2D ApplyDisplayScale(this Vector2D vector) => vector.Scale(screenScale);
 }

Game/Game.csproj

@@ -20,12 +20,14 @@
     <EmbeddedResource Include="Icon.bmp" />
   </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="Apos.Shapes" Version="0.2.3" />
     <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.8.1.303" />
     <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.1.303" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Engine\Engine.Core\Engine.Core.csproj" />
     <ProjectReference Include="..\Engine\Engine.Input\Engine.Input.csproj" />
+    <ProjectReference Include="..\Engine\Engine.Physics2D\Engine.Physics2D.csproj" />
   </ItemGroup>
   <Target Name="RestoreDotnetTools" BeforeTargets="Restore">
     <Message Text="Restoring dotnet tools" Importance="High" />

Game/Game.sln

@@ -1,31 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.5.002.0
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Game", "Game.csproj", "{42644486-9F9E-4242-B6C4-AF31BBFA31D2}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Engine.Core", "..\Engine\Engine.Core\Engine.Core.csproj", "{EF1FE4A2-40DF-4967-8003-CF6D98010D02}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Any CPU = Debug|Any CPU
-		Release|Any CPU = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{42644486-9F9E-4242-B6C4-AF31BBFA31D2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{42644486-9F9E-4242-B6C4-AF31BBFA31D2}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{42644486-9F9E-4242-B6C4-AF31BBFA31D2}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{42644486-9F9E-4242-B6C4-AF31BBFA31D2}.Release|Any CPU.Build.0 = Release|Any CPU
-		{EF1FE4A2-40DF-4967-8003-CF6D98010D02}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{EF1FE4A2-40DF-4967-8003-CF6D98010D02}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{EF1FE4A2-40DF-4967-8003-CF6D98010D02}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{EF1FE4A2-40DF-4967-8003-CF6D98010D02}.Release|Any CPU.Build.0 = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {AB3225EE-1621-439F-8F83-DF4515922FEF}
-	EndGlobalSection
-EndGlobal

Game/Game1.cs

@@ -1,244 +0,0 @@
-using System;
-using Microsoft.Xna.Framework;
-using Microsoft.Xna.Framework.Graphics;
-using Microsoft.Xna.Framework.Input;
-
-using Pong.Behaviours;
-
-using Syntriax.Engine.Core;
-using Syntriax.Engine.Core.Abstract;
-using Syntriax.Engine.Graphics.TwoDimensional;
-using Syntriax.Engine.Physics2D;
-using Syntriax.Engine.Physics2D.Primitives;
-
-namespace Pong;
-
-public class Game1 : Game
-{
-    private GraphicsDeviceManager _graphics = null!;
-    private PhysicsEngine2D engine;
-    private SpriteBatch _spriteBatch = null!;
-    public static GameManager gameManager = null!;
-    public static Sprite spriteBox = null!;
-    private MonoGameCameraBehaviour cameraBehaviour = null!;
-
-
-    public Game1()
-    {
-        engine = new PhysicsEngine2D();
-
-        _graphics = new GraphicsDeviceManager(this)
-        {
-            PreferredBackBufferWidth = 1024,
-            PreferredBackBufferHeight = 576
-        };
-
-        Content.RootDirectory = "Content";
-        IsMouseVisible = true;
-    }
-
-    protected override void Initialize()
-    {
-        gameManager = new();
-
-        // TODO: Add your initialization logic here
-        gameManager.Initialize();
-
-        base.Initialize();
-    }
-
-    protected override void LoadContent()
-    {
-        _spriteBatch = new SpriteBatch(GraphicsDevice);
-
-        spriteBox = new Sprite() { Texture2D = Content.Load<Texture2D>("Sprites/Pixel") };
-        Sprite spriteBall = new Sprite() { Texture2D = Content.Load<Texture2D>("Sprites/Circle") };
-
-        IGameObject gameObjectCamera = gameManager.InstantiateGameObject<GameObject>();
-        gameObjectCamera.Name = "Camera";
-        gameObjectCamera.Transform.Position = Vector2D.Zero;
-
-        cameraBehaviour = gameObjectCamera.BehaviourController.AddBehaviour<MonoGameCameraBehaviour>();
-        cameraBehaviour.Viewport = GraphicsDevice.Viewport;
-        gameManager.Camera = cameraBehaviour;
-
-        GameObject gameObjectBall = gameManager.InstantiateGameObject<GameObject>();
-        gameObjectBall.Name = "Ball";
-        gameObjectBall.Transform.Position = Vector2D.Zero;
-        gameObjectBall.Transform.Scale = new Vector2D(1f / 51.2f, 1f / 51.2f);
-        engine.AddRigidBody(gameObjectBall.BehaviourController.AddBehaviour<RigidBody2D>());
-        gameObjectBall.BehaviourController.AddBehaviour<MovementBallBehaviour>(new Vector2D(.1f, .1f), 500f);
-        gameObjectBall.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBall);
-        gameObjectBall.BehaviourController.AddBehaviour<Collider2DAABBBehaviour>().AABBLocal = new AABB(-Vector2D.One * 512f * .5f, Vector2D.One * 512f * .5f);
-        // gameObjectBall = gameManager.InstantiateGameObject<GameObject>();
-        // gameObjectBall.Name = "Ball";
-        // gameObjectBall.Transform.Position = Vector2D.UnitY * 30f;
-        // gameObjectBall.Transform.Scale = new Vector2D(1f / 51.2f, 1f / 51.2f);
-        // engine.AddRigidBody(gameObjectBall.BehaviourController.AddBehaviour<RigidBody2D>());
-        // gameObjectBall.BehaviourController.AddBehaviour<MovementBallBehaviour>(new Vector2D(.1f, .01f), 500f);
-        // gameObjectBall.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBall);
-        // gameObjectBall.BehaviourController.AddBehaviour<Collider2DAABBBehaviour>().AABBLocal = new AABB(-Vector2D.One * 512f * .5f, Vector2D.One * 512f * .5f);
-
-        // IGameObject gameObjectLeft = gameManager.InstantiateGameObject<GameObject>();
-        // gameObjectLeft.Name = "Left";
-        // gameObjectLeft.Transform.Position = new Vector2D(-452, 0f);
-        // gameObjectLeft.Transform.Scale = new Vector2D(10f, 40f);
-        // gameObjectLeft.BehaviourController.AddBehaviour<KeyboardInputsBehaviour>();
-        // gameObjectLeft.BehaviourController.AddBehaviour<MovementBoxBehaviour>(Keys.W, Keys.S, 268f, -268f, 400f);
-        // gameObjectLeft.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBox);
-        // gameObjectLeft.BehaviourController.AddBehaviour<Collider2DAABBBehaviour>().AABBLocal = new AABB(-Vector2D.One * .5f, Vector2D.One * .5f);
-        // engine.AddRigidBody(gameObjectLeft.BehaviourController.AddBehaviour<RigidBody2D>());
-
-        // IGameObject gameObjectRight = gameManager.InstantiateGameObject<GameObject>();
-        // gameObjectRight.Name = "Right";
-        // gameObjectRight.Transform.Position = new Vector2D(452, 0f);
-        // gameObjectRight.Transform.Scale = new Vector2D(10f, 40f);
-        // gameObjectRight.BehaviourController.AddBehaviour<KeyboardInputsBehaviour>();
-        // gameObjectRight.BehaviourController.AddBehaviour<MovementBoxBehaviour>(Keys.Up, Keys.Down, 268f, -268f, 400f);
-        // gameObjectRight.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBox);
-        // gameObjectRight.BehaviourController.AddBehaviour<Collider2DAABBBehaviour>().AABBLocal = new AABB(-Vector2D.One * .5f, Vector2D.One * .5f);
-        // engine.AddRigidBody(gameObjectRight.BehaviourController.AddBehaviour<RigidBody2D>());
-
-
-        IGameObject goPlayAreaTop = gameManager.InstantiateGameObject<GameObject>();
-        goPlayAreaTop.Transform.Position = new Vector2D(0f, 288f + 20f);
-        goPlayAreaTop.Transform.Scale = new Vector2D(10240f, 40f);
-        goPlayAreaTop.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBox);
-        goPlayAreaTop.BehaviourController.AddBehaviour<Collider2DAABBBehaviour>().AABBLocal = new AABB(-Vector2D.One * .5f, Vector2D.One * .5f);
-        engine.AddRigidBody(goPlayAreaTop.BehaviourController.AddBehaviour<RigidBody2D>());
-        IGameObject goPlayAreaBottom = gameManager.InstantiateGameObject<GameObject>();
-        goPlayAreaBottom.Transform.Position = new Vector2D(0f, -(288f + 20f));
-        goPlayAreaBottom.Transform.Scale = new Vector2D(10240f, 40f);
-        goPlayAreaBottom.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBox);
-        goPlayAreaBottom.BehaviourController.AddBehaviour<Collider2DAABBBehaviour>().AABBLocal = new AABB(-Vector2D.One * .5f, Vector2D.One * .5f);
-        engine.AddRigidBody(goPlayAreaBottom.BehaviourController.AddBehaviour<RigidBody2D>());
-
-        IGameObject goPlayAreaRight = gameManager.InstantiateGameObject<GameObject>();
-        goPlayAreaRight.Transform.Position = new Vector2D(512f + 20f, 0f);
-        goPlayAreaRight.Transform.Scale = new Vector2D(40f, 5760f);
-        goPlayAreaRight.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBox);
-        goPlayAreaRight.BehaviourController.AddBehaviour<Collider2DAABBBehaviour>().AABBLocal = new AABB(-Vector2D.One * .5f, Vector2D.One * .5f);
-        engine.AddRigidBody(goPlayAreaRight.BehaviourController.AddBehaviour<RigidBody2D>());
-        IGameObject goPlayAreaLeft = gameManager.InstantiateGameObject<GameObject>();
-        goPlayAreaLeft.Transform.Position = new Vector2D(-(512f + 20f), 0f);
-        goPlayAreaLeft.Transform.Scale = new Vector2D(40f, 5760f);
-        goPlayAreaLeft.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBox);
-        goPlayAreaLeft.BehaviourController.AddBehaviour<Collider2DAABBBehaviour>().AABBLocal = new AABB(-Vector2D.One * .5f, Vector2D.One * .5f);
-        engine.AddRigidBody(goPlayAreaLeft.BehaviourController.AddBehaviour<RigidBody2D>());
-
-        // IGameObject goPlayAreaCenter = gameManager.InstantiateGameObject<GameObject>();
-        // goPlayAreaCenter.Transform.Position = new Vector2D(100f, 100f);
-        // goPlayAreaCenter.Transform.Scale = new Vector2D(40f, 40f);
-        // // goPlayAreaCenter.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBox);
-        // engine.AddRigidBody(goPlayAreaCenter.BehaviourController.AddBehaviour<RigidBody2D>());
-        // TODO: use this.Content to load your game content here
-    }
-
-    protected override void Update(GameTime gameTime)
-    {
-        if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
-            Exit();
-
-        if (Keyboard.GetState().IsKeyDown(Keys.F))
-        {
-            if (_graphics.IsFullScreen)
-                return;
-
-            _graphics.PreferMultiSampling = false;
-            _graphics.PreferredBackBufferWidth = GraphicsDevice.Adapter.CurrentDisplayMode.Width;
-            _graphics.PreferredBackBufferHeight = GraphicsDevice.Adapter.CurrentDisplayMode.Height;
-            _graphics.IsFullScreen = true;
-            _graphics.ApplyChanges();
-
-            float previousScreenSize = MathF.Sqrt(MathF.Pow(cameraBehaviour.Viewport.Width, 2f) + MathF.Pow(cameraBehaviour.Viewport.Height, 2f));
-            float currentScreenSize = MathF.Sqrt(MathF.Pow(GraphicsDevice.Viewport.Width, 2f) + MathF.Pow(GraphicsDevice.Viewport.Height, 2f));
-            cameraBehaviour.Zoom /= previousScreenSize / currentScreenSize;
-            cameraBehaviour.Viewport = GraphicsDevice.Viewport;
-        }
-
-        if (Keyboard.GetState().IsKeyDown(Keys.U))
-            cameraBehaviour.Zoom += gameTime.ElapsedGameTime.Nanoseconds * 0.00025f;
-        if (Keyboard.GetState().IsKeyDown(Keys.J))
-            cameraBehaviour.Zoom -= gameTime.ElapsedGameTime.Nanoseconds * 0.00025f;
-
-        if (Keyboard.GetState().IsKeyDown(Keys.Q))
-            cameraBehaviour.BehaviourController.GameObject.Transform.Rotation += gameTime.ElapsedGameTime.Nanoseconds * 0.000025f;
-        if (Keyboard.GetState().IsKeyDown(Keys.E))
-            cameraBehaviour.BehaviourController.GameObject.Transform.Rotation -= gameTime.ElapsedGameTime.Nanoseconds * 0.000025f;
-
-        if (Keyboard.GetState().IsKeyDown(Keys.N))
-        {
-            seconds = 70f;
-            while (physicsTimer + 0.01f < seconds)
-            {
-                physicsTimer += 0.01f;
-                engine.Step(.01f);
-            }
-        }
-        if (Keyboard.GetState().IsKeyDown(Keys.M))
-        {
-            seconds = 0f;
-            while (physicsTimer - 0.01f > seconds)
-            {
-                physicsTimer -= 0.01f;
-                engine.Step(-.01f);
-            }
-        }
-        if (Keyboard.GetState().IsKeyDown(Keys.Space))
-        {
-            seconds += gameTime.ElapsedGameTime.Milliseconds * .005f;
-            while (physicsTimer + 0.01f < seconds)
-            {
-                Console.WriteLine($"Physics Timer: {physicsTimer}");
-                physicsTimer += 0.01f;
-                engine.Step(.01f);
-            }
-        }
-        if (Keyboard.GetState().IsKeyDown(Keys.B))
-        {
-            seconds -= gameTime.ElapsedGameTime.Milliseconds * .005f;
-            while (physicsTimer - 0.01f > seconds)
-            {
-                Console.WriteLine($"Physics Timer: {physicsTimer}");
-                physicsTimer -= 0.01f;
-                engine.Step(-.01f);
-            }
-        }
-
-
-        // while (physicsTimer + 0.01f < gameTime.TotalGameTime.TotalMilliseconds * .001f)//seconds)
-        // {
-        //     Console.WriteLine($"Physics Timer: {physicsTimer}");
-        //     physicsTimer += 0.01f;
-        //     engine.Step(.01f);
-        // }
-        gameManager.Update(gameTime.ToEngineTime());
-        base.Update(gameTime);
-    }
-    static float physicsTimer = 0f;
-    static float seconds = 0f;
-
-    protected override void Draw(GameTime gameTime)
-    {
-        GraphicsDevice.Clear(new Color() { R = 32, G = 32, B = 32 });
-
-        // gameManager.Camera.Position = gameObjectBall.Transform.Position;
-        // Console.WriteLine($"Pos: {gameManager.Camera.Position}");
-
-        // TODO: Add your drawing code here
-        gameManager.PreDraw();
-        gameManager.Camera.Update();
-
-        _spriteBatch.Begin(SpriteSortMode.Deferred, transformMatrix: cameraBehaviour.MatrixTransform);
-        foreach (IGameObject gameObject in gameManager)
-        {
-            if (!gameObject.BehaviourController.TryGetBehaviour(out IDisplayable? displayable))
-                continue;
-
-            displayable.Draw(_spriteBatch);
-        }
-        _spriteBatch.End();
-
-        base.Draw(gameTime);
-    }
-}

Game/GamePong.cs

@@ -0,0 +1,168 @@
+using System;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using Microsoft.Xna.Framework.Input;
+
+using Pong.Behaviours;
+using Apos.Shapes;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Core.Abstract;
+using Syntriax.Engine.Physics2D;
+using Syntriax.Engine.Physics2D.Primitives;
+using Syntriax.Engine.Physics2D.Abstract;
+
+namespace Pong;
+
+public class GamePong : Game
+{
+    private readonly GraphicsDeviceManager graphics = null!;
+    private IPhysicsEngine2D physicsEngine = null!;
+    private SpriteBatch spriteBatch = null!;
+    private ShapeBatch shapeBatch = null!;
+
+    private GameManager gameManager = null!;
+    private BehaviourCollector<IDisplayableSprite> displayableCollector = null!;
+    private BehaviourCollector<IDisplayableShape> displayableShapeCollector = null!;
+    private MonoGameCamera2DBehaviour cameraBehaviour = null!;
+
+    private PongManagerBehaviour pongManager = null!;
+
+    private float physicsTimer = 0f;
+
+    public GamePong()
+    {
+        graphics = new GraphicsDeviceManager(this)
+        {
+            PreferredBackBufferWidth = 1024,
+            PreferredBackBufferHeight = 576,
+            GraphicsProfile = GraphicsProfile.HiDef
+        };
+
+        Content.RootDirectory = "Content";
+        IsMouseVisible = true;
+    }
+
+    protected override void Initialize()
+    {
+        // TODO: Add your initialization logic here
+        gameManager = new();
+        displayableCollector = new(gameManager);
+        displayableShapeCollector = new(gameManager);
+        physicsEngine = new PhysicsEngine2DCollector(gameManager) { IterationPerStep = 3 };
+
+        gameManager.Initialize();
+
+        base.Initialize();
+    }
+
+    protected override void LoadContent()
+    {
+        spriteBatch = new SpriteBatch(GraphicsDevice);
+        shapeBatch = new ShapeBatch(GraphicsDevice, Content);
+        SpriteFont spriteFont = Content.Load<SpriteFont>("UbuntuMono");
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IGameObject gameObjectCamera = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Camera"); ;
+        gameObjectCamera.BehaviourController.AddBehaviour<CameraController>();
+        cameraBehaviour = gameObjectCamera.BehaviourController.AddBehaviour<MonoGameCamera2DBehaviour>(graphics);
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IGameObject gameObjectPongManager = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Pong Game Manager");
+        pongManager = gameObjectPongManager.BehaviourController.AddBehaviour<PongManagerBehaviour>(5);
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IGameObject gameObjectBall = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Ball");
+        gameObjectBall.Transform.SetTransform(position: new Vector2D(0, 0f), scale: new Vector2D(10f, 10f));
+
+        gameObjectBall.BehaviourController.AddBehaviour<CircleBehaviour>(new Circle(Vector2D.Zero, 1f));
+        gameObjectBall.BehaviourController.AddBehaviour<BallBehaviour>();
+        gameObjectBall.BehaviourController.AddBehaviour<RigidBody2D>();
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IGameObject gameObjectLeftPaddle = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Left Paddle");
+        gameObjectLeftPaddle.Transform.SetTransform(position: new Vector2D(-468f, 0f), scale: new Vector2D(15f, 60f));
+
+        gameObjectLeftPaddle.BehaviourController.AddBehaviour<PaddleBehaviour>(Keys.W, Keys.S, 228f, -228f, 400f);
+        gameObjectLeftPaddle.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape.Box);
+        gameObjectLeftPaddle.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        IGameObject gameObjectRightPaddle = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Right Paddle");
+        gameObjectRightPaddle.Transform.SetTransform(position: new Vector2D(468f, 0f), scale: new Vector2D(15f, 60f));
+        gameObjectRightPaddle.BehaviourController.AddBehaviour<PaddleBehaviour>(Keys.Up, Keys.Down, 228f, -228f, 400f);
+        gameObjectRightPaddle.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape.Box);
+        gameObjectRightPaddle.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IGameObject gameObjectWallTop = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Wall Top");
+        gameObjectWallTop.Transform.SetTransform(position: new Vector2D(0f, 308f), scale: new Vector2D(552f, 20f));
+        gameObjectWallTop.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape.Box);
+        gameObjectWallTop.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        IGameObject gameObjectWallBottom = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Wall Bottom");
+        gameObjectWallBottom.Transform.SetTransform(position: new Vector2D(0f, -308f), scale: new Vector2D(552f, 20f));
+        gameObjectWallBottom.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape.Box);
+        gameObjectWallBottom.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        IGameObject gameObjectWallRight = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Wall Right");
+        gameObjectWallRight.Transform.SetTransform(position: new Vector2D(532f, 0f), scale: new Vector2D(20f, 328f));
+        gameObjectWallRight.BehaviourController.AddBehaviour<WallScoreBehaviour>((Action)pongManager.ScoreToLeft);
+        gameObjectWallRight.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape.Box);
+        gameObjectWallRight.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        IGameObject gameObjectWallLeft = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Wall Left");
+        gameObjectWallLeft.Transform.SetTransform(position: new Vector2D(-532f, 0f), scale: new Vector2D(20f, 328f));
+        gameObjectWallLeft.BehaviourController.AddBehaviour<WallScoreBehaviour>((Action)pongManager.ScoreToRight);
+        gameObjectWallLeft.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape.Box);
+        gameObjectWallLeft.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IGameObject gameObjectLeftScoreText = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Score Left");
+        gameObjectLeftScoreText.Transform.SetTransform(position: new Vector2D(-250f, 250f), scale: Vector2D.One * .25f);
+        gameObjectLeftScoreText.BehaviourController.AddBehaviour<TextScoreBehaviour>(true, spriteFont);
+
+        IGameObject gameObjectRightScoreText = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Score Right");
+        gameObjectRightScoreText.Transform.SetTransform(position: new Vector2D(250f, 250f), scale: Vector2D.One * .25f);
+        gameObjectRightScoreText.BehaviourController.AddBehaviour<TextScoreBehaviour>(false, spriteFont);
+    }
+
+    protected override void Update(GameTime gameTime)
+    {
+        if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
+            Exit();
+
+        gameManager.Update(gameTime.ToEngineTime());
+        while (physicsTimer + 0.01f < gameTime.TotalGameTime.TotalMilliseconds * .001f)//seconds)
+        {
+            physicsTimer += 0.01f;
+            physicsEngine.Step(.01f);
+        }
+        base.Update(gameTime);
+    }
+
+    protected override void Draw(GameTime gameTime)
+    {
+        GraphicsDevice.Clear(new Color() { R = 32, G = 32, B = 32 });
+
+        // TODO: Add your drawing code here
+        gameManager.PreDraw();
+
+        spriteBatch.Begin(SpriteSortMode.Deferred, transformMatrix: cameraBehaviour.MatrixTransform);
+        foreach (var displayable in displayableCollector)
+            displayable.Draw(spriteBatch);
+        spriteBatch.End();
+
+        shapeBatch.Begin(cameraBehaviour.MatrixTransform);
+        foreach (var displayableShape in displayableShapeCollector)
+            displayableShape.Draw(shapeBatch);
+        shapeBatch.End();
+
+        base.Draw(gameTime);
+    }
+}

Game/Graphics/Abstract/Assignable/IAssignableSprite.cs

@@ -1,26 +0,0 @@
-using System;
-
-namespace Syntriax.Engine.Core.Abstract;
-
-/// <summary>
-/// Indicates the object is an <see cref="IAssignable"/> with an assignable <see cref="ISprite"/> field.
-/// </summary>
-public interface IAssignableSprite : IAssignable
-{
-    /// <summary>
-    /// Callback triggered when the <see cref="ISprite"/> value has has been assigned a new value.
-    /// </summary>
-    Action<IAssignableSprite>? OnSpriteAssigned { get; set; }
-
-    /// <inheritdoc cref="ISprite" />
-    ISprite Sprite { get; }
-
-    /// <summary>
-    /// Assign a value to the <see cref="ISprite"/> field of this object
-    /// </summary>
-    /// <param name="sprite">New <see cref="ISprite"/> to assign.</param>
-    /// <returns> 
-    /// <see cref="true"/>, if the value given assigned successfully assigned, <see cref="false"/> if not.
-    /// </returns>
-    bool Assign(ISprite sprite);
-}

Game/Graphics/Abstract/ISprite.cs

@@ -1,13 +0,0 @@
-using System;
-
-using Microsoft.Xna.Framework.Graphics;
-
-namespace Syntriax.Engine.Core.Abstract;
-
-// TODO Probably gonna have to rethink this
-public interface ISprite
-{
-    Action<ISprite>? OnTextureChanged { get; set; }
-
-    Texture2D Texture2D { get; set; }
-}

Game/Graphics/Sprite.cs

@@ -1,27 +0,0 @@
-using System;
-
-using Microsoft.Xna.Framework.Graphics;
-
-using Syntriax.Engine.Core.Abstract;
-
-namespace Syntriax.Engine.Core;
-
-public class Sprite : ISprite
-{
-    public Action<ISprite>? OnTextureChanged { get; set; }
-
-    private Texture2D _texture = null!;
-
-    public Texture2D Texture2D
-    {
-        get => _texture;
-        set
-        {
-            if (_texture == value)
-                return;
-
-            _texture = value;
-            OnTextureChanged?.Invoke(this);
-        }
-    }
-}

Game/Graphics/TwoDimensional/Abstract/IDisplayableSprite.cs

@@ -1,20 +0,0 @@
-using System;
-
-using Microsoft.Xna.Framework;
-using Microsoft.Xna.Framework.Graphics;
-
-using Syntriax.Engine.Core.Abstract;
-
-namespace Syntriax.Engine.Graphics.TwoDimensional.Abstract;
-public interface IDisplayableSprite : IDisplayable, IAssignableSprite
-{
-    Action<IDisplayableSprite>? OnSpriteEffectsChanged { get; set; }
-    Action<IDisplayableSprite>? OnOriginChanged { get; set; }
-    Action<IDisplayableSprite>? OnColorChanged { get; set; }
-    Action<IDisplayableSprite>? OnDepthChanged { get; set; }
-
-    SpriteEffects SpriteEffects { get; set; }
-    Vector2 Origin { get; set; }
-    Color Color { get; set; }
-    float Depth { get; set; }
-}

Game/Graphics/TwoDimensional/DisplayableSpriteBehaviour.cs

@@ -1,117 +0,0 @@
-using System;
-
-using Microsoft.Xna.Framework;
-using Microsoft.Xna.Framework.Graphics;
-
-using Syntriax.Engine.Core;
-using Syntriax.Engine.Core.Abstract;
-using Syntriax.Engine.Graphics.TwoDimensional.Abstract;
-
-namespace Syntriax.Engine.Graphics.TwoDimensional;
-
-public class DisplayableSpriteBehaviour : Behaviour, IDisplayableSprite, IAssignableSprite
-{
-    public Action<IAssignableSprite>? OnSpriteAssigned { get; set; } = null;
-    public Action<IDisplayableSprite>? OnSpriteEffectsChanged { get; set; } = null;
-    public Action<IDisplayableSprite>? OnOriginChanged { get; set; } = null;
-    public Action<IDisplayableSprite>? OnColorChanged { get; set; } = null;
-    public Action<IDisplayableSprite>? OnDepthChanged { get; set; } = null;
-
-    private ISprite _sprite = null!;
-    private Color _color = Color.White;
-    private float _depth = 0f;
-    private SpriteEffects _spriteEffects = SpriteEffects.None;
-    private Vector2 _origin = Vector2.One * .5f;
-
-
-    public ISprite Sprite => _sprite;
-
-    public SpriteEffects SpriteEffects
-    {
-        get => _spriteEffects;
-        set
-        {
-            if (_spriteEffects == value)
-                return;
-
-            _spriteEffects = value;
-            OnSpriteEffectsChanged?.Invoke(this);
-        }
-    }
-
-    public Vector2 Origin
-    {
-        get => _origin;
-        set
-        {
-            if (_origin == value)
-                return;
-
-            _origin = value;
-            OnOriginChanged?.Invoke(this);
-        }
-    }
-
-    public Color Color
-    {
-        get => _color;
-        set
-        {
-            if (_color == value)
-                return;
-
-            _color = value;
-            OnColorChanged?.Invoke(this);
-        }
-    }
-
-    public float Depth
-    {
-        get => _depth;
-        set
-        {
-            if (_depth == value)
-                return;
-
-            _depth = value;
-            OnDepthChanged?.Invoke(this);
-        }
-    }
-
-    public void Draw(SpriteBatch spriteBatch)
-    {
-        if (!BehaviourController.GameObject.StateEnable.Enabled || !StateEnable.Enabled)
-            return;
-
-        ITransform transform = BehaviourController.GameObject.Transform;
-        Vector2D position = transform.Position;
-        Vector2D scale = transform.Scale;
-
-        Rectangle rectangle = new((int)position.X, -(int)position.Y, (int)(Sprite.Texture2D.Width * scale.X), (int)(Sprite.Texture2D.Height * scale.Y));
-
-        spriteBatch.Draw(Sprite.Texture2D, rectangle, null, Color, transform.Rotation, new Vector2(Sprite.Texture2D.Width, Sprite.Texture2D.Height) * Origin, SpriteEffects, Depth);
-    }
-
-    public bool Assign(ISprite sprite)
-    {
-        _sprite = sprite;
-        OnSpriteAssigned?.Invoke(this);
-        return true;
-    }
-
-    public DisplayableSpriteBehaviour() => OnUnassigned += OnUnassign;
-    public DisplayableSpriteBehaviour(
-        Color? color = null,
-        float? depth = null,
-        SpriteEffects? spriteEffects = null,
-        Vector2? origin = null)
-    {
-        OnUnassigned += OnUnassign;
-
-        _color = color ?? _color;
-        _depth = depth ?? _depth;
-        _spriteEffects = spriteEffects ?? _spriteEffects;
-        _origin = origin ?? _origin;
-    }
-    private void OnUnassign(IAssignable assignable) => _sprite = null!;
-}

Game/Physics2D/Abstract/ICollider2D.cs

@@ -1,19 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-using Syntriax.Engine.Core;
-using Syntriax.Engine.Core.Abstract;
-
-namespace Syntriax.Engine.Physics2D.Abstract;
-
-public interface ICollider2D : IBehaviour, IAssignableTransform
-{
-    Action<ICollider2D, ICollider2D>? OnCollisionPreResolve { get; set; }
-
-    IRigidBody2D? RigidBody2D { get; }
-
-    IList<Vector2D> Vertices { get; }
-
-    bool CheckCollision(Vector2D point);
-    void Recalculate();
-}

Game/Physics2D/Abstract/ICollisionResolver2D.cs

@@ -1,6 +0,0 @@
-namespace Syntriax.Engine.Physics2D.Abstract;
-
-public interface ICollisionResolver2D
-{
-    void ResolveCollision(ICollider2D colliderA, ICollider2D colliderB);
-}

Game/Physics2D/Abstract/IPhysicsEngine2D.cs

@@ -1,11 +0,0 @@
-namespace Syntriax.Engine.Physics2D.Abstract;
-
-public interface IPhysicsEngine2D
-{
-    int IterationCount { get; set; }
-
-    void AddRigidBody(IRigidBody2D rigidBody);
-    void RemoveRigidBody(IRigidBody2D rigidBody);
-
-    void Step(float deltaTime);
-}

Game/Physics2D/Abstract/IPhysicsMaterial2D.cs

@@ -1,7 +0,0 @@
-namespace Syntriax.Engine.Physics2D.Abstract;
-
-public interface IPhysicsMaterial2D
-{
-    float Friction { get; }
-    float Restitution { get; }
-}

Game/Physics2D/Abstract/IRigidBody2D.cs

@@ -1,14 +0,0 @@
-using Syntriax.Engine.Core;
-using Syntriax.Engine.Core.Abstract;
-
-namespace Syntriax.Engine.Physics2D.Abstract;
-
-public interface IRigidBody2D : IBehaviour, IAssignableTransform
-{
-    IPhysicsMaterial2D Material { get; set; }
-
-    Vector2D Velocity { get; set; }
-    float AngularVelocity { get; set; }
-
-    float Mass { get; set; }
-}

Game/Physics2D/Collider2DAABBBehaviour.cs

@@ -1,67 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-using Syntriax.Engine.Core;
-using Syntriax.Engine.Core.Abstract;
-using Syntriax.Engine.Physics2D.Abstract;
-using Syntriax.Engine.Physics2D.Primitives;
-
-namespace Syntriax.Engine.Physics2D;
-
-public class Collider2DAABBBehaviour : BehaviourOverride, ICollider2D
-{
-    public AABB AABBLocal { get; set; } = null!;
-    public AABB AABBWorld { get; private set; } = null!;
-
-    private IRigidBody2D? _rigidBody2D = null;
-    private List<Vector2D> _vertices = new List<Vector2D>(4);
-
-    public IRigidBody2D? RigidBody2D
-    {
-        get
-        {
-            if (_rigidBody2D is null)
-                BehaviourController.TryGetBehaviour(out _rigidBody2D);
-
-            return _rigidBody2D;
-        }
-    }
-
-    public Action<ICollider2D, ICollider2D>? OnCollisionPreResolve { get; set; } = null;
-
-    public Action<IAssignableTransform>? OnTransformAssigned { get => GameObject.OnTransformAssigned; set => GameObject.OnTransformAssigned = value; }
-    ITransform IAssignableTransform.Transform => Transform;
-    public bool Assign(ITransform transform) => GameObject.Assign(transform);
-
-    public IList<Vector2D> Vertices => _vertices;
-
-    public bool CheckCollision(Vector2D point)
-    {
-        return AABBWorld.Overlaps(point);
-    }
-
-    public void Recalculate()
-    {
-        AABBWorld = new AABB(
-            AABBLocal.LowerBoundary.Scale(Transform.Scale) + Transform.Position,
-            AABBLocal.UpperBoundary.Scale(Transform.Scale) + Transform.Position
-        );
-
-        Vertices.Clear();
-        Vertices.Add(AABBWorld.LowerBoundary);
-        Vertices.Add(new Vector2D(AABBWorld.LowerBoundary.X, AABBWorld.UpperBoundary.Y));
-        Vertices.Add(AABBWorld.UpperBoundary);
-        Vertices.Add(new Vector2D(AABBWorld.UpperBoundary.X, AABBWorld.LowerBoundary.Y));
-    }
-    public Collider2DAABBBehaviour(Vector2D lowerBoundary, Vector2D upperBoundary)
-    {
-        AABBLocal = new AABB(lowerBoundary, upperBoundary);
-        AABBWorld = new AABB(lowerBoundary, upperBoundary);
-    }
-
-    public Collider2DAABBBehaviour()
-    {
-        AABBLocal = new(Vector2D.Zero, Vector2D.Zero);
-        AABBWorld = new(Vector2D.Zero, Vector2D.Zero);
-    }
-}

Game/Physics2D/CollisionInformation.cs

@@ -1,9 +0,0 @@
-using Microsoft.Xna.Framework;
-
-namespace Syntriax.Engine.Physics2D;
-
-public record CollisionInformation
-(
-    Vector2 Normal,
-    Vector2 ContactPosition
-);

Game/Physics2D/PhysicsEngine2D.cs

@@ -1,75 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-using Syntriax.Engine.Core;
-using Syntriax.Engine.Core.Abstract;
-using Syntriax.Engine.Physics2D.Abstract;
-using Syntriax.Engine.Physics2D.Primitives;
-
-namespace Syntriax.Engine.Physics2D;
-
-public class PhysicsEngine2D : IPhysicsEngine2D
-{
-    private List<IRigidBody2D> rigidBodies = new List<IRigidBody2D>(32);
-    private List<ICollider2D> colliders = new List<ICollider2D>(64);
-
-    private int _iterationCount = 1;
-
-
-    public int IterationCount { get => _iterationCount; set => _iterationCount = value < 1 ? 1 : value; }
-
-    public void AddRigidBody(IRigidBody2D rigidBody)
-    {
-        if (rigidBodies.Contains(rigidBody))
-            return;
-
-        rigidBodies.Add(rigidBody);
-
-        foreach (var collider2D in rigidBody.BehaviourController.GetBehaviours<ICollider2D>())
-            colliders.Add(collider2D);
-
-        rigidBody.BehaviourController.OnBehaviourAdded += OnBehaviourAdded;
-        rigidBody.BehaviourController.OnBehaviourRemoved += OnBehaviourRemoved;
-    }
-
-    public void RemoveRigidBody(IRigidBody2D rigidBody)
-    {
-        rigidBodies.Remove(rigidBody);
-    }
-
-    public void Step(float deltaTime)
-    {
-        float intervalDeltaTime = deltaTime / IterationCount;
-
-        for (int iterationIndex = 0; iterationIndex < IterationCount; iterationIndex++)
-        {
-            foreach (var rigidBody in rigidBodies)
-                StepRigidBody(rigidBody, intervalDeltaTime);
-
-            foreach (var collider in colliders)
-                collider.Recalculate();
-        }
-    }
-
-    private static void StepRigidBody(IRigidBody2D rigidBody, float intervalDeltaTime)
-    {
-        rigidBody.Transform.Position += rigidBody.Velocity * intervalDeltaTime;
-        rigidBody.Transform.Rotation += rigidBody.AngularVelocity * intervalDeltaTime;
-    }
-
-    private void OnBehaviourAdded(IBehaviourController controller, IBehaviour behaviour)
-    {
-        if (behaviour is not ICollider2D collider2D)
-            return;
-
-        colliders.Add(collider2D);
-    }
-
-    private void OnBehaviourRemoved(IBehaviourController controller, IBehaviour behaviour)
-    {
-        if (behaviour is not ICollider2D collider2D)
-            return;
-
-        colliders.Remove(collider2D);
-    }
-}

Game/Physics2D/PhysicsMaterial2D.cs

@@ -1,5 +0,0 @@
-using Syntriax.Engine.Physics2D.Abstract;
-
-namespace Syntriax.Engine.Physics2D;
-
-public record PhysicsMaterial2D(float Friction, float Restitution) : IPhysicsMaterial2D { }

Game/Physics2D/PhysicsMaterial2DDefault.cs

@@ -1,6 +0,0 @@
-namespace Syntriax.Engine.Physics2D;
-
-public record PhysicsMaterial2DDefault : PhysicsMaterial2D
-{
-    public PhysicsMaterial2DDefault() : base(.1f, .1f) { }
-}

Game/Physics2D/PhysicsMath.cs

@@ -1,118 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-using Microsoft.Xna.Framework;
-using Syntriax.Engine.Core;
-using Syntriax.Engine.Physics2D.Primitives;
-
-namespace Syntriax.Engine.Physics2D;
-
-public static class PhysicsMath
-{
-    public static Vector2D Scale(this Vector2D original, Vector2D scale)
-        => new Vector2D(original.X * scale.X, original.Y * scale.Y);
-
-    public static Triangle ToSuperTriangle(this IList<Vector2D> vertices)
-    {
-        float minX = float.MaxValue, minY = float.MaxValue;
-        float maxX = float.MinValue, maxY = float.MinValue;
-
-        foreach (Vector2D point in vertices)
-        {
-            minX = MathF.Min(minX, point.X);
-            minY = MathF.Min(minY, point.Y);
-            maxX = MathF.Max(maxX, point.X);
-            maxY = MathF.Max(maxY, point.Y);
-        }
-
-        float dx = maxX - minX;
-        float dy = maxY - minY;
-        float deltaMax = MathF.Max(dx, dy);
-        float midX = (minX + maxX) / 2;
-        float midY = (minY + maxY) / 2;
-
-        Vector2D p1 = new Vector2D((float)midX - 20f * (float)deltaMax, (float)midY - (float)deltaMax);
-        Vector2D p2 = new Vector2D((float)midX, (float)midY + 20 * (float)deltaMax);
-        Vector2D p3 = new Vector2D((float)midX + 20 * (float)deltaMax, (float)midY - (float)deltaMax);
-
-        return new Triangle(p1, p2, p3);
-    }
-
-    public static IList<Line> ToLines(this IList<Vector2D> vertices)
-    {
-        List<Line> lines = new List<Line>(vertices.Count - 1);
-        ToLines(vertices, lines);
-        return lines;
-    }
-
-    public static void ToLines(this IList<Vector2D> vertices, IList<Line> lines)
-    {
-        lines.Clear();
-        for (int i = 0; i < vertices.Count - 1; i++)
-            lines.Add(new(vertices[i], vertices[i + 1]));
-        lines.Add(new(vertices[^1], vertices[0]));
-    }
-
-    public static bool LaysOn(this Vector2D point, Line line)
-        => line.Resolve(point.X).ApproximatelyEquals(point);
-
-
-    // Given three collinear points p, q, r, the function checks if 
-    // point q lies on line segment 'pr' 
-    public static bool OnSegment(Vector2D p, Vector2D q, Vector2D r)
-    {
-        if (q.X <= MathF.Max(p.X, r.X) && q.X >= MathF.Min(p.X, r.X) &&
-            q.Y <= MathF.Max(p.Y, r.Y) && q.Y >= MathF.Min(p.Y, r.Y))
-            return true;
-
-        return false;
-    }
-
-    // To find orientation of ordered triplet (p, q, r). 
-    // The function returns following values 
-    // 0 --> p, q and r are collinear 
-    // 1 --> Clockwise 
-    // 2 --> Counterclockwise 
-    public static int Orientation(Vector2D p, Vector2D q, Vector2D r)
-    {
-        // See https://www.geeksforgeeks.org/orientation-3-ordered-points/ 
-        // for details of below formula. 
-        float val = (q.Y - p.Y) * (r.X - q.X) -
-                (q.X - p.X) * (r.Y - q.Y);
-
-        if (val == 0) return 0; // collinear 
-
-        return (val > 0) ? 1 : 2; // clock or counterclock wise 
-    }
-
-    public static float IntersectionParameterT(Vector2D p0, Vector2D p1, Vector2D q0, Vector2D q1)
-        => ((q0.X - p0.X) * (p1.Y - p0.Y) - (q0.Y - p0.Y) * (p1.X - p0.X)) /
-            ((q1.Y - q0.Y) * (p1.X - p0.X) - (q1.X - q0.X) * (p1.Y - p0.Y));
-
-
-    public static bool ApproximatelyEquals(this float a, float b)
-        => ApproximatelyEquals(a, b, float.Epsilon);
-    public static bool ApproximatelyEquals(this Vector2 a, Vector2 b)
-        => ApproximatelyEquals(a, b, float.Epsilon);
-    public static bool ApproximatelyEquals(this Vector2 a, Vector2 b, float epsilon)
-        => ApproximatelyEquals(a.X, b.X, epsilon) && ApproximatelyEquals(a.Y, b.Y, epsilon);
-    public static bool ApproximatelyEquals(this Vector2D a, Vector2D b)
-        => ApproximatelyEquals(a, b, float.Epsilon);
-    public static bool ApproximatelyEquals(this Vector2D a, Vector2D b, float epsilon)
-        => ApproximatelyEquals(a.X, b.X, epsilon) && ApproximatelyEquals(a.Y, b.Y, epsilon);
-    public static bool ApproximatelyEquals(this float a, float b, float epsilon)
-    {
-        if (a == b)
-            return true;
-
-        const float floatNormal = (1 << 23) * float.Epsilon;
-        float absA = MathF.Abs(a);
-        float absB = MathF.Abs(b);
-        float diff = MathF.Abs(a - b);
-
-        if (a == 0.0f || b == 0.0f || diff < floatNormal)
-            return diff < (epsilon * floatNormal);
-
-        return diff / MathF.Min(absA + absB, float.MaxValue) < epsilon;
-    }
-}

Game/Physics2D/Primitives/AABB.cs

@@ -1,17 +0,0 @@
-using Syntriax.Engine.Core;
-
-namespace Syntriax.Engine.Physics2D.Primitives;
-
-public record AABB(Vector2D LowerBoundary, Vector2D UpperBoundary)
-{
-    public bool Overlaps(Vector2D point)
-        => point.X >= LowerBoundary.X && point.X <= UpperBoundary.X &&
-            point.Y >= LowerBoundary.Y && point.Y <= UpperBoundary.Y;
-
-    public bool Overlaps(AABB other)
-        => LowerBoundary.X <= other.UpperBoundary.X && UpperBoundary.X >= other.LowerBoundary.X &&
-            LowerBoundary.Y <= other.UpperBoundary.Y && UpperBoundary.Y >= other.LowerBoundary.Y;
-
-    public bool ApproximatelyEquals(AABB other)
-        => LowerBoundary.ApproximatelyEquals(other.LowerBoundary) && UpperBoundary.ApproximatelyEquals(other.UpperBoundary);
-}

Game/Physics2D/Primitives/Circle.cs

@@ -1,18 +0,0 @@
-using Syntriax.Engine.Core;
-
-namespace Syntriax.Engine.Physics2D.Primitives;
-
-public record Circle(Vector2D Position, float Radius)
-{
-    public bool Intersects(Circle other)
-    {
-        float distanceSquared = (Position - other.Position).LengthSquared();
-        float radiusSumSquared = Radius * Radius + other.Radius * other.Radius;
-
-        return distanceSquared < radiusSumSquared;
-    }
-
-    public bool Overlaps(Vector2D point) => (Position - point).LengthSquared() <= Radius * Radius;
-    public bool ApproximatelyEquals(Circle other)
-        => Position.ApproximatelyEquals(other.Position) && Radius.ApproximatelyEquals(other.Radius);
-}

Game/Physics2D/Primitives/Line.cs

@@ -1,146 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
-
-using Syntriax.Engine.Core;
-
-namespace Syntriax.Engine.Physics2D.Primitives;
-
-public record Line(Vector2D From, Vector2D To)
-{
-    public Line Reversed => new(To, From);
-    public Vector2D Direction => Vector2D.Normalize(To - From);
-    public float Length => (From - To).Length();
-    public float LengthSquared => (From - To).LengthSquared();
-
-    public LineEquation LineEquation
-    {
-        get
-        {
-            Vector2D slopeVector = To - From;
-            float slope = slopeVector.Y / slopeVector.X;
-
-            float yOffset = From.Y - (slope * From.X);
-
-            return new LineEquation(slope, yOffset);
-        }
-    }
-
-    public bool Intersects(Vector2D point)
-        => Resolve(point.X).ApproximatelyEquals(point);
-
-    public float GetT(Vector2D point)
-    {
-        float fromX = MathF.Abs(From.X);
-        float toX = MathF.Abs(To.X);
-        float pointX = MathF.Abs(point.X);
-
-        float min = MathF.Min(fromX, toX);
-        float max = MathF.Max(fromX, toX) - min;
-
-        pointX -= min;
-
-        float t = pointX / max;
-
-        // FIXME
-        // I don't even know, apparently whatever I wrote up there doesn't take into account of the direction of the line
-        // Which... I can see how, but I am also not sure how I can make it take into account. Or actually I'm for some reason
-        // too unmotivated to find a solution. Future me, find a better way if possible, please.
-        if (!Lerp(t).ApproximatelyEquals(point))
-            return 1f - t;
-        return t;
-    }
-
-    public bool Exist(List<Vector2D> vertices)
-    {
-        for (int i = 0; i < vertices.Count - 1; i++)
-        {
-            Vector2D vertexCurrent = vertices[i];
-            Vector2D vertexNext = vertices[i];
-            if (From == vertexCurrent && To == vertexNext) return true;
-            if (From == vertexNext && To == vertexCurrent) return true;
-        }
-
-        Vector2D vertexFirst = vertices[0];
-        Vector2D vertexLast = vertices[^1];
-        if (From == vertexFirst && To == vertexLast) return true;
-        if (From == vertexLast && To == vertexFirst) return true;
-        return false;
-    }
-
-    public float IntersectionParameterT(Line other)
-    {
-        float numerator = (From.X - other.From.X) * (other.From.Y - other.To.Y) - (From.Y - other.From.Y) * (other.From.X - other.To.X);
-        float denominator = (From.X - To.X) * (other.From.Y - other.To.Y) - (From.Y - To.Y) * (other.From.X - other.To.X);
-
-        // Lines are parallel
-        if (denominator == 0)
-            return float.NaN;
-
-        return numerator / denominator;
-    }
-
-    public Vector2D Lerp(float t)
-        => new Vector2D(
-            From.X + (To.X - From.X) * t,
-            From.Y + (To.Y - From.Y) * t
-        );
-
-    public Vector2D Resolve(float x)
-        => new Vector2D(x, LineEquation.Resolve(x));
-
-    public Vector2D ClosestPointTo(Vector2D point)
-    {
-        // Convert edge points to vectors
-        var edgeVector = new Vector2D(To.X - From.X, To.Y - From.Y);
-        var pointVector = new Vector2D(point.X - From.X, point.Y - From.Y);
-
-        // Calculate the projection of pointVector onto edgeVector
-        float t = (pointVector.X * edgeVector.X + pointVector.Y * edgeVector.Y) / (edgeVector.X * edgeVector.X + edgeVector.Y * edgeVector.Y);
-
-        // Clamp t to the range [0, 1] to ensure the closest point is on the edge
-        t = MathF.Max(0, MathF.Min(1, t));
-
-        // Calculate the closest point on the edge
-        float closestX = From.X + t * edgeVector.X;
-        float closestY = From.Y + t * edgeVector.Y;
-
-        return new Vector2D((float)closestX, (float)closestY);
-    }
-
-    public Vector2D IntersectionPoint(Line other)
-        => Vector2D.Lerp(From, To, IntersectionParameterT(other));
-
-    public bool Intersects(Line other)
-    {
-        int o1 = PhysicsMath.Orientation(From, To, other.From);
-        int o2 = PhysicsMath.Orientation(From, To, other.To);
-        int o3 = PhysicsMath.Orientation(other.From, other.To, From);
-        int o4 = PhysicsMath.Orientation(other.From, other.To, To);
-
-        if (o1 != o2 && o3 != o4)
-            return true;
-
-        if (o1 == 0 && PhysicsMath.OnSegment(From, other.From, To)) return true;
-        if (o2 == 0 && PhysicsMath.OnSegment(From, other.To, To)) return true;
-        if (o3 == 0 && PhysicsMath.OnSegment(other.From, From, other.To)) return true;
-        if (o4 == 0 && PhysicsMath.OnSegment(other.From, To, other.To)) return true;
-
-        return false;
-    }
-
-    public bool Intersects(Line other, [NotNullWhen(returnValue: true)] out Vector2D? point)
-    {
-        point = null;
-
-        bool result = Intersects(other);
-
-        if (result)
-            point = IntersectionPoint(other);
-
-        return result;
-    }
-
-    public bool ApproximatelyEquals(Line other)
-        => From.ApproximatelyEquals(other.From) && To.ApproximatelyEquals(other.To);
-}

Game/Physics2D/Primitives/LineEquation.cs

@@ -1,8 +0,0 @@
-namespace Syntriax.Engine.Physics2D.Primitives;
-
-public record LineEquation(float Slope, float OffsetY)
-{
-    public float Resolve(float x) => Slope * x + OffsetY; // y = mx + b
-    public bool ApproximatelyEquals(LineEquation other)
-        => Slope.ApproximatelyEquals(other.Slope) && OffsetY.ApproximatelyEquals(other.OffsetY);
-}

Game/Physics2D/Primitives/Math.cs

@@ -1,9 +0,0 @@
-namespace Syntriax.Engine.Physics2D.Primitives;
-
-public static class Math
-{
-    public const float RadianToDegree = 57.29577866666166f;
-    public const float DegreeToRadian = 0.01745329277777778f;
-
-    public static float Clamp(float value, float min, float max) => (value < min) ? min : (value > max) ? max : value;
-}

Game/Physics2D/Primitives/Shape.cs

@@ -1,68 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-using Syntriax.Engine.Core;
-
-namespace Syntriax.Engine.Physics2D.Primitives;
-
-public record Shape(IList<Vector2D> Vertices)
-{
-    public Triangle SuperTriangle
-    {
-        get
-        {
-            float minX = float.MaxValue, minY = float.MaxValue;
-            float maxX = float.MinValue, maxY = float.MinValue;
-
-            foreach (Vector2D point in Vertices)
-            {
-                minX = MathF.Min(minX, point.X);
-                minY = MathF.Min(minY, point.Y);
-                maxX = MathF.Max(maxX, point.X);
-                maxY = MathF.Max(maxY, point.Y);
-            }
-
-            float dx = maxX - minX;
-            float dy = maxY - minY;
-            float deltaMax = MathF.Max(dx, dy);
-            float midX = (minX + maxX) / 2;
-            float midY = (minY + maxY) / 2;
-
-            Vector2D p1 = new Vector2D((float)midX - 20f * (float)deltaMax, (float)midY - (float)deltaMax);
-            Vector2D p2 = new Vector2D((float)midX, (float)midY + 20 * (float)deltaMax);
-            Vector2D p3 = new Vector2D((float)midX + 20 * (float)deltaMax, (float)midY - (float)deltaMax);
-
-            return new Triangle(p1, p2, p3);
-        }
-    }
-
-    public List<Line> Lines
-    {
-        get
-        {
-            List<Line> lines = new List<Line>(Vertices.Count - 1);
-            GetLinesNonAlloc(lines);
-            return lines;
-        }
-    }
-
-    public void GetLinesNonAlloc(IList<Line> lines)
-    {
-        lines.Clear();
-        for (int i = 0; i < Vertices.Count - 1; i++)
-            lines.Add(new(Vertices[i], Vertices[i + 1]));
-        lines.Add(new(Vertices[^1], Vertices[0]));
-    }
-
-    public bool ApproximatelyEquals(Shape other)
-    {
-        if (Vertices.Count != other.Vertices.Count)
-            return false;
-
-        for (int i = 0; i < Vertices.Count; i++)
-            if (!Vertices[i].ApproximatelyEquals(other.Vertices[i]))
-                return false;
-
-        return true;
-    }
-}

Game/Physics2D/Primitives/Triangle.cs

@@ -1,54 +0,0 @@
-using System;
-
-using Syntriax.Engine.Core;
-
-namespace Syntriax.Engine.Physics2D.Primitives;
-
-public record Triangle(Vector2D A, Vector2D B, Vector2D C)
-{
-    public float Area => MathF.Abs((
-            A.X * (B.Y - C.Y) +
-            B.X * (C.Y - A.Y) +
-            C.X * (A.Y - B.Y)
-            ) * .5f);
-
-    public Circle CircumCircle
-    {
-        get
-        {
-            Vector2D midAB = (A + B) / 2;
-            Vector2D midBC = (B + C) / 2;
-
-            float slopeAB = (B.Y - A.Y) / (B.X - A.X);
-            float slopeBC = (C.Y - B.Y) / (C.X - B.X);
-
-            Vector2D center;
-            if (MathF.Abs(slopeAB - slopeBC) > float.Epsilon)
-            {
-                float x = (slopeAB * slopeBC * (A.Y - C.Y) + slopeBC * (A.X + B.X) - slopeAB * (B.X + C.X)) / (2 * (slopeBC - slopeAB));
-                float y = -(x - (A.X + B.X) / 2) / slopeAB + (A.Y + B.Y) / 2;
-                center = new Vector2D(x, y);
-            }
-            else
-                center = (midAB + midBC) * .5f;
-
-            return new(center, Vector2D.Distance(center, A));
-        }
-    }
-
-    public bool Overlaps(Vector2D point)
-    {
-        float originalTriangleArea = Area;
-
-        float pointTriangleArea1 = new Triangle(point, B, C).Area;
-        float pointTriangleArea2 = new Triangle(A, point, C).Area;
-        float pointTriangleArea3 = new Triangle(A, B, point).Area;
-
-        float pointTriangleAreasSum = pointTriangleArea1 + pointTriangleArea2 + pointTriangleArea3;
-
-        return originalTriangleArea.ApproximatelyEquals(pointTriangleAreasSum, float.Epsilon * 3f);
-    }
-
-    public bool ApproximatelyEquals(Triangle other)
-        => A.ApproximatelyEquals(other.A) && B.ApproximatelyEquals(other.B) && C.ApproximatelyEquals(other.C);
-}

Game/Physics2D/RigidBody2D.cs

@@ -1,24 +0,0 @@
-using System;
-
-using Syntriax.Engine.Core;
-using Syntriax.Engine.Core.Abstract;
-using Syntriax.Engine.Physics2D.Abstract;
-
-namespace Syntriax.Engine.Physics2D;
-
-public class RigidBody2D : BehaviourOverride, IRigidBody2D
-{
-    public Action<IAssignableTransform>? OnTransformAssigned { get => GameObject.OnTransformAssigned; set => GameObject.OnTransformAssigned = value; }
-
-
-    public IPhysicsMaterial2D Material { get; set; } = new PhysicsMaterial2DDefault();
-
-    public Vector2D Velocity { get; set; } = Vector2D.Zero;
-    public float AngularVelocity { get; set; } = 0f;
-    public float Mass { get; set; } = 0f;
-
-    ITransform IAssignableTransform.Transform => Transform;
-
-
-    public bool Assign(ITransform transform) => GameObject.Assign(transform);
-}

Game/Program.cs

@@ -1,3 +1,3 @@
 
-using var game = new Pong.Game1();
+using var game = new Pong.GamePong();
 game.Run();

Pong.sln

@@ -11,7 +11,7 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Game", "Game\Game.csproj",
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Engine.Input", "Engine\Engine.Input\Engine.Input.csproj", "{7EED4EC3-79D5-4C6C-A54D-1B396213C0E4}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Engine.Graphics", "Engine\Engine.Graphics\Engine.Graphics.csproj", "{7371D9AF-6F4D-4F05-8458-197C4EE66B01}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Engine.Physics2D", "Engine\Engine.Physics2D\Engine.Physics2D.csproj", "{0D97F83C-B043-48B1-B155-7354C4E84FC0}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -34,14 +34,14 @@ Global
 		{7EED4EC3-79D5-4C6C-A54D-1B396213C0E4}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{7EED4EC3-79D5-4C6C-A54D-1B396213C0E4}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{7EED4EC3-79D5-4C6C-A54D-1B396213C0E4}.Release|Any CPU.Build.0 = Release|Any CPU
-		{7371D9AF-6F4D-4F05-8458-197C4EE66B01}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0D97F83C-B043-48B1-B155-7354C4E84FC0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{7371D9AF-6F4D-4F05-8458-197C4EE66B01}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0D97F83C-B043-48B1-B155-7354C4E84FC0}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{7371D9AF-6F4D-4F05-8458-197C4EE66B01}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0D97F83C-B043-48B1-B155-7354C4E84FC0}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{7371D9AF-6F4D-4F05-8458-197C4EE66B01}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0D97F83C-B043-48B1-B155-7354C4E84FC0}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{990CA10C-1EBB-4395-A43A-456B7029D8C9} = {F7F62670-237A-4C93-A30E-CE661C6FC401}
 		{7EED4EC3-79D5-4C6C-A54D-1B396213C0E4} = {F7F62670-237A-4C93-A30E-CE661C6FC401}
-		{7371D9AF-6F4D-4F05-8458-197C4EE66B01} = {F7F62670-237A-4C93-A30E-CE661C6FC401}
+		{0D97F83C-B043-48B1-B155-7354C4E84FC0} = {F7F62670-237A-4C93-A30E-CE661C6FC401}
 	EndGlobalSection
 EndGlobal