chore: updated engine

Shared/.config/dotnet-tools.json

@@ -0,0 +1,36 @@
+{
+  "version": 1,
+  "isRoot": true,
+  "tools": {
+    "dotnet-mgcb": {
+      "version": "3.8.2.1105",
+      "commands": [
+        "mgcb"
+      ]
+    },
+    "dotnet-mgcb-editor": {
+      "version": "3.8.2.1105",
+      "commands": [
+        "mgcb-editor"
+      ]
+    },
+    "dotnet-mgcb-editor-linux": {
+      "version": "3.8.2.1105",
+      "commands": [
+        "mgcb-editor-linux"
+      ]
+    },
+    "dotnet-mgcb-editor-windows": {
+      "version": "3.8.2.1105",
+      "commands": [
+        "mgcb-editor-windows"
+      ]
+    },
+    "dotnet-mgcb-editor-mac": {
+      "version": "3.8.2.1105",
+      "commands": [
+        "mgcb-editor-mac"
+      ]
+    }
+  }
+}

Shared/Abstract/IDisplayableShape.cs

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+using Apos.Shapes;
+
+namespace Syntriax.Engine.Core.Abstract;
+
+public interface IDisplayableShape
+{
+    void Draw(ShapeBatch shapeBatch);
+}

Shared/Abstract/IDisplayableSprite.cs

@@ -0,0 +1,8 @@
+using Microsoft.Xna.Framework.Graphics;
+
+namespace Syntriax.Engine.Core.Abstract;
+
+public interface IDisplayableSprite
+{
+    public void Draw(SpriteBatch spriteBatch);
+}

Shared/Behaviours/BallBehaviour.cs

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+using System;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Physics2D;
+using Syntriax.Engine.Physics2D.Abstract;
+
+namespace Pong.Behaviours;
+
+public class BallBehaviour : Behaviour2D
+{
+    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($"{nameof(IRigidBody2D)} is missing on {HierarchyObject.Name}.");
+        if (!BehaviourController.TryGetBehaviour(out ICollider2D? foundCollider))
+            throw new Exception($"{nameof(ICollider2D)} is missing on {HierarchyObject.Name}.");
+
+        foundCollider.OnCollisionDetected += OnCollisionDetected;
+
+        rigidBody = foundRigidBody;
+
+        if (HierarchyObject.GameManager.TryFindBehaviour(out PongManagerBehaviour? pongManager))
+        {
+            pongManager.OnReset += ResetBall;
+            pongManager.OnScored += ResetBall;
+            pongManager.OnFinished += DisableBall;
+        }
+    }
+
+    private void DisableBall(PongManagerBehaviour pongManager)
+    {
+        Transform.Position = Vector2D.Zero;
+        rigidBody.Velocity = Vector2D.Zero;
+    }
+
+    private void ResetBall(PongManagerBehaviour pongManager)
+    {
+        StateEnable.Enabled = true;
+        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 * GameManager.Time.DeltaTime;
+        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.Detected.Transform.Position.FromTo(information.Detector.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;
+    }
+}

Shared/Behaviours/CameraController.cs

@@ -0,0 +1,71 @@
+using Microsoft.Xna.Framework.Input;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Systems.Input;
+
+namespace Pong.Behaviours;
+
+public class CameraController : Behaviour
+{
+    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>();
+
+        buttonInputs = GameManager.FindBehaviour<IButtonInputs<Keys>>() ?? throw new("Unable to find inputs");
+        buttonInputs.RegisterOnPress(Keys.F, SwitchToFullScreen);
+        buttonInputs.RegisterOnPress(Keys.R, ResetCamera);
+    }
+
+    protected override void OnUpdate()
+    {
+        if (buttonInputs.IsPressed(Keys.U))
+            cameraBehaviour.Zoom += GameManager.Time.DeltaTime * 5f;
+        if (buttonInputs.IsPressed(Keys.J))
+            cameraBehaviour.Zoom -= GameManager.Time.DeltaTime * 5f;
+
+
+        if (buttonInputs.IsPressed(Keys.NumPad8)) cameraBehaviour.Transform.LocalPosition += Vector2D.Up * GameManager.Time.DeltaTime * 500f;
+        if (buttonInputs.IsPressed(Keys.NumPad2)) cameraBehaviour.Transform.LocalPosition -= Vector2D.Up * GameManager.Time.DeltaTime * 500f;
+        if (buttonInputs.IsPressed(Keys.NumPad6)) cameraBehaviour.Transform.LocalPosition += Vector2D.Right * GameManager.Time.DeltaTime * 500f;
+        if (buttonInputs.IsPressed(Keys.NumPad4)) cameraBehaviour.Transform.LocalPosition -= Vector2D.Right * GameManager.Time.DeltaTime * 500f;
+
+
+        if (buttonInputs.IsPressed(Keys.Q))
+            cameraBehaviour.Transform.Rotation += GameManager.Time.DeltaTime * 45f;
+        if (buttonInputs.IsPressed(Keys.E))
+            cameraBehaviour.Transform.Rotation -= GameManager.Time.DeltaTime * 45f;
+    }
+
+    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;
+        cameraBehaviour.Transform.LocalPosition = Vector2D.Zero;
+        cameraBehaviour.Transform.LocalRotation = 0f;
+    }
+}

Shared/Behaviours/CircleBehaviour.cs

@@ -0,0 +1,29 @@
+using Microsoft.Xna.Framework;
+
+using Apos.Shapes;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Core.Abstract;
+
+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; }
+}

Shared/Behaviours/MonoGameCamera2DBehaviour.cs

@@ -0,0 +1,102 @@
+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) : Behaviour2D, 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;
+    }
+
+    // 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);
+}

Shared/Behaviours/MovementBallBehaviour.cs

@@ -0,0 +1,53 @@
+using System;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Physics2D;
+using Syntriax.Engine.Physics2D.Abstract;
+
+namespace Pong.Behaviours;
+
+public class MovementBallBehaviour : Behaviour2D
+{
+    public Vector2D StartDirection { get; private set; } = Vector2D.Zero;
+    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? foundRigidBody))
+            throw new Exception($"{nameof(IRigidBody2D)} is missing on {HierarchyObject.Name}.");
+        if (!BehaviourController.TryGetBehaviour(out ICollider2D? foundCollider))
+            throw new Exception($"{nameof(ICollider2D)} is missing on {HierarchyObject.Name}.");
+
+        foundRigidBody.Velocity = StartDirection * Speed;
+        foundCollider.OnCollisionDetected += OnCollisionDetected;
+
+        rigidBody = foundRigidBody;
+    }
+
+    protected override void OnUpdate()
+    {
+        if (rigidBody.Velocity.MagnitudeSquared <= 0.01f)
+            return;
+
+        Vector2D speedUp = rigidBody.Velocity.Normalized * GameManager.Time.DeltaTime;
+        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.Detector.Transform.Position.FromTo(information.Detected.Transform.Position).Normalized * rigidBody.Velocity.Magnitude;
+        else
+            rigidBody.Velocity = rigidBody.Velocity.Reflect(information.Normal);
+    }
+
+    public MovementBallBehaviour() { }
+    public MovementBallBehaviour(Vector2D startDirection, float speed)
+    {
+        StartDirection = Vector2D.Normalize(startDirection);
+        Speed = speed;
+    }
+}

Shared/Behaviours/PaddleBehaviour.cs

@@ -0,0 +1,60 @@
+using System;
+
+using Microsoft.Xna.Framework.Input;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Systems.Input;
+
+namespace Pong.Behaviours;
+
+public class PaddleBehaviour(Keys Up, Keys Down, float High, float Low, float Speed) : Behaviour2D
+{
+    private Keys Up { get; } = Up;
+    private Keys Down { get; } = Down;
+    public float High { get; } = High;
+    public float Low { get; } = Low;
+    public float Speed { get; set; } = Speed;
+
+    private bool isUpPressed = false;
+    private bool isDownPressed = false;
+
+    private IButtonInputs<Keys> inputs = null!;
+
+    protected override void OnUpdate()
+    {
+        if (isUpPressed && isDownPressed)
+            return;
+
+        if (isUpPressed)
+            Transform.Position = Transform.Position + Vector2D.Up * GameManager.Time.DeltaTime * Speed;
+        else if (isDownPressed)
+            Transform.Position = Transform.Position + -Vector2D.Up * GameManager.Time.DeltaTime * Speed;
+
+        Transform.Position = new Vector2D(Transform.Position.X, MathF.Max(MathF.Min(Transform.Position.Y, High), Low));
+    }
+
+    protected override void OnFirstActiveFrame()
+    {
+        inputs = GameManager.FindBehaviour<IButtonInputs<Keys>>() ?? throw new("Unable to find inputs");
+
+        inputs.RegisterOnPress(Up, OnUpPressed);
+        inputs.RegisterOnRelease(Up, OnUpReleased);
+
+        inputs.RegisterOnPress(Down, OnDownPressed);
+        inputs.RegisterOnRelease(Down, OnDownReleased);
+    }
+
+    protected override void OnFinalize()
+    {
+        inputs.UnregisterOnPress(Up, OnUpPressed);
+        inputs.UnregisterOnRelease(Up, OnUpReleased);
+
+        inputs.UnregisterOnPress(Down, OnDownPressed);
+        inputs.UnregisterOnRelease(Down, OnDownReleased);
+    }
+
+    private void OnUpPressed(IButtonInputs<Keys> inputs, Keys keys) => isUpPressed = true;
+    private void OnUpReleased(IButtonInputs<Keys> inputs, Keys keys) => isUpPressed = false;
+    private void OnDownPressed(IButtonInputs<Keys> inputs, Keys keys) => isDownPressed = true;
+    private void OnDownReleased(IButtonInputs<Keys> inputs, Keys keys) => isDownPressed = false;
+}

Shared/Behaviours/PongManagerBehaviour.cs

@@ -0,0 +1,61 @@
+using System;
+
+using Microsoft.Xna.Framework.Input;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Systems.Input;
+
+namespace Pong.Behaviours;
+
+public class PongManagerBehaviour : Behaviour
+{
+    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()
+    {
+        var buttonInputs = GameManager.FindBehaviour<IButtonInputs<Keys>>() ?? throw new("Unable to find inputs");
+        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);
+    }
+}

Shared/Behaviours/ShapeAABBBehaviour.cs

@@ -0,0 +1,47 @@
+using Microsoft.Xna.Framework;
+
+using Apos.Shapes;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Core.Abstract;
+using Syntriax.Engine.Physics2D.Abstract;
+using Syntriax.Engine.Systems.Input;
+
+namespace Pong.Behaviours;
+
+public class ShapeAABBBehaviour : Behaviour2D, 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; }
+}

Shared/Behaviours/ShapeBehaviour.cs

@@ -0,0 +1,33 @@
+using Microsoft.Xna.Framework;
+
+using Apos.Shapes;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Core.Abstract;
+
+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(Shape2D shape) : base(shape) { }
+    public ShapeBehaviour(Shape2D shape, float thickness) : base(shape) { Thickness = thickness; }
+    public ShapeBehaviour(Shape2D shape, Color color) : base(shape) { Color = color; }
+    public ShapeBehaviour(Shape2D shape, Color color, float thickness) : base(shape) { Thickness = thickness; Color = color; }
+}

Shared/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 : Behaviour2D, 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;
+}

Shared/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 (!HierarchyObject.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;
+}

Shared/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) : Behaviour2D
+{
+    private Action OnCollision { get; } = OnCollision;
+
+    protected override void OnFirstActiveFrame()
+    {
+        if (!BehaviourController.TryGetBehaviour(out ICollider2D? collider2D))
+            return;
+
+        collider2D.OnCollisionDetected += (_, _1) => OnCollision?.Invoke();
+    }
+}

Shared/Content/Content.mgcb

@@ -0,0 +1,22 @@
+
+#----------------------------- Global Properties ----------------------------#
+
+/outputDir:bin/$(Platform)
+/intermediateDir:obj/$(Platform)
+/platform:DesktopGL
+/config:
+/profile:Reach
+/compress:False
+
+#-------------------------------- References --------------------------------#
+
+
+#---------------------------------- Content ---------------------------------#
+
+#begin UbuntuMono.spritefont
+/importer:FontDescriptionImporter
+/processor:FontDescriptionProcessor
+/processorParam:PremultiplyAlpha=True
+/processorParam:TextureFormat=Compressed
+/build:UbuntuMono.spritefont
+

Shared/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>

Shared/EngineConverter.cs

@@ -0,0 +1,23 @@
+using System.Runtime.CompilerServices;
+using Microsoft.Xna.Framework;
+using Syntriax.Engine.Core;
+
+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);
+}

Shared/GamePong.cs

@@ -0,0 +1,165 @@
+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;
+
+namespace Pong;
+
+public class GamePong : Game
+{
+    private readonly IHierarchyObject platformSpecificHierarchyObject = null!;
+    private readonly GraphicsDeviceManager graphics = 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!;
+
+    public GamePong(IHierarchyObject platformSpecificHierarchyObject)
+    {
+        this.platformSpecificHierarchyObject = platformSpecificHierarchyObject;
+        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);
+
+        gameManager.Initialize();
+
+        base.Initialize();
+    }
+
+    protected override void LoadContent()
+    {
+        spriteBatch = new SpriteBatch(GraphicsDevice);
+        shapeBatch = new ShapeBatch(GraphicsDevice, Content);
+        SpriteFont spriteFont = Content.Load<SpriteFont>("UbuntuMono");
+
+        gameManager.Register(platformSpecificHierarchyObject);
+        gameManager.InstantiateHierarchyObject<PhysicsEngine2D>().SetHierarchyObject("Physics Engine 2D");
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IHierarchyObject HierarchyObjectCamera = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Camera"); ;
+        HierarchyObjectCamera.BehaviourController.AddBehaviour<Transform2D>();
+
+        HierarchyObjectCamera.BehaviourController.AddBehaviour<CameraController>();
+        cameraBehaviour = HierarchyObjectCamera.BehaviourController.AddBehaviour<MonoGameCamera2DBehaviour>(graphics);
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IHierarchyObject HierarchyObjectPongManager = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Pong Game Manager");
+        pongManager = HierarchyObjectPongManager.BehaviourController.AddBehaviour<PongManagerBehaviour>(5);
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IHierarchyObject HierarchyObjectBall = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Ball");
+        HierarchyObjectBall.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(0, 0f), scale: new Vector2D(10f, 10f));
+
+        HierarchyObjectBall.BehaviourController.AddBehaviour<CircleBehaviour>(new Circle(Vector2D.Zero, 1f));
+        HierarchyObjectBall.BehaviourController.AddBehaviour<BallBehaviour>();
+        HierarchyObjectBall.BehaviourController.AddBehaviour<RigidBody2D>();
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IHierarchyObject HierarchyObjectLeftPaddle = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Left Paddle");
+        HierarchyObjectLeftPaddle.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(-468f, 0f), scale: new Vector2D(15f, 60f));
+
+        HierarchyObjectLeftPaddle.BehaviourController.AddBehaviour<PaddleBehaviour>(Keys.W, Keys.S, 228f, -228f, 400f);
+        HierarchyObjectLeftPaddle.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
+        HierarchyObjectLeftPaddle.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        IHierarchyObject HierarchyObjectRightPaddle = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Right Paddle");
+        HierarchyObjectRightPaddle.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(468f, 0f), scale: new Vector2D(15f, 60f));
+        HierarchyObjectRightPaddle.BehaviourController.AddBehaviour<PaddleBehaviour>(Keys.Up, Keys.Down, 228f, -228f, 400f);
+        HierarchyObjectRightPaddle.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
+        HierarchyObjectRightPaddle.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IHierarchyObject HierarchyObjectWallTop = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Wall Top");
+        HierarchyObjectWallTop.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(0f, 308f), scale: new Vector2D(552f, 20f));
+        HierarchyObjectWallTop.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
+        HierarchyObjectWallTop.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        IHierarchyObject HierarchyObjectWallBottom = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Wall Bottom");
+        HierarchyObjectWallBottom.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(0f, -308f), scale: new Vector2D(552f, 20f));
+        HierarchyObjectWallBottom.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
+        HierarchyObjectWallBottom.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        IHierarchyObject HierarchyObjectWallRight = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Wall Right");
+        HierarchyObjectWallRight.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(532f, 0f), scale: new Vector2D(20f, 328f));
+        HierarchyObjectWallRight.BehaviourController.AddBehaviour<WallScoreBehaviour>((Action)pongManager.ScoreToLeft);
+        HierarchyObjectWallRight.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
+        HierarchyObjectWallRight.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        IHierarchyObject HierarchyObjectWallLeft = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Wall Left");
+        HierarchyObjectWallLeft.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(-532f, 0f), scale: new Vector2D(20f, 328f));
+        HierarchyObjectWallLeft.BehaviourController.AddBehaviour<WallScoreBehaviour>((Action)pongManager.ScoreToRight);
+        HierarchyObjectWallLeft.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
+        HierarchyObjectWallLeft.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
+
+        ////////////////////////////////////////////////////////////////////////////////////
+
+        IHierarchyObject HierarchyObjectLeftScoreText = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Score Left");
+        HierarchyObjectLeftScoreText.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(-250f, 250f), scale: Vector2D.One * .25f);
+        HierarchyObjectLeftScoreText.BehaviourController.AddBehaviour<TextScoreBehaviour>(true, spriteFont);
+
+        IHierarchyObject HierarchyObjectRightScoreText = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Score Right");
+        HierarchyObjectRightScoreText.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(250f, 250f), scale: Vector2D.One * .25f);
+        HierarchyObjectRightScoreText.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());
+
+        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);
+    }
+}

Shared/Shared.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="Apos.Shapes" Version="0.2.3" />
+    <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.1.303" />
+    <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.8.2.1105">
+      <PrivateAssets>All</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="../Engine/Engine/Engine.csproj" />
+  </ItemGroup>
+</Project>