Test

Game/Game1.cs

@@ -69,15 +69,23 @@ public class Game1 : Game
         gameObjectBall.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBall);
         IGameObject gameObjectBall2 = gameManager.InstantiateGameObject<GameObject>();
         gameObjectBall2.Name = "Ball2";
-        gameObjectBall2.Transform.Position = Vector2.UnitY * -40;
+        gameObjectBall2.Transform.Position = Vector2.UnitY * -50f;
         gameObjectBall2.Transform.Scale = new Vector2(1f / 51.2f, 1f / 51.2f);
         RigidBody2D rigidBody = gameObjectBall2.BehaviourController.AddBehaviour<RigidBody2D>();
-        rigidBody.Velocity = Vector2.UnitY * 10f;
+        rigidBody.Velocity = Vector2.UnitY * 100f;
         engine.AddRigidBody(rigidBody);
         gameObjectBall2.BehaviourController.AddBehaviour<Collider2DBehaviour>((System.Collections.Generic.IList<Vector2>)[new Vector2(1, 1) * 5f, new Vector2(-1, 1) * 5f, new Vector2(1, -1) * 5f, new Vector2(-1, -1) * 5f]);
         // gameObjectBall2.BehaviourController.AddBehaviour<MovementBallBehaviour>(new Vector2(.1f, .1f), playAreaBehaviour, 100f);
         gameObjectBall2.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBall);
 
+        IGameObject gameObjectBall3 = gameManager.InstantiateGameObject<GameObject>();
+        gameObjectBall3.Name = "Ball";
+        gameObjectBall3.Transform.Position = Vector2.UnitY * -120f + Vector2.UnitX * 10f;
+        gameObjectBall3.Transform.Scale = new Vector2(1f / 51.2f, 1f / 51.2f);
+        engine.AddRigidBody(gameObjectBall3.BehaviourController.AddBehaviour<RigidBody2D>());
+        gameObjectBall3.BehaviourController.AddBehaviour<Collider2DBehaviour>((System.Collections.Generic.IList<Vector2>)[new Vector2(1, 1) * 5f, new Vector2(-1, 1) * 5f, new Vector2(1, -1) * 5f, new Vector2(-1, -1) * 5f]);
+        // gameObjectBall3.BehaviourController.AddBehaviour<MovementBallBehaviour>(new Vector2(.1f, .1f), playAreaBehaviour, 100f);
+        gameObjectBall3.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBall);
         // IGameObject gameObjectLeft = gameManager.InstantiateGameObject<GameObject>();
         // gameObjectLeft.Name = "Left";
         // gameObjectLeft.Transform.Position = new Vector2(-452, 0f);

Game/Physics2D/Abstract/ICollider2D.cs

@@ -1,6 +1,6 @@
 using System;
 using System.Collections.Generic;
-
+using System.Diagnostics.CodeAnalysis;
 using Microsoft.Xna.Framework;
 
 using Syntriax.Engine.Core.Abstract;
@@ -9,6 +9,8 @@ namespace Syntriax.Engine.Physics2D.Abstract;
 
 public interface ICollider2D : IBehaviour, IAssignableTransform
 {
+    IRigidBody2D? RigidBody2D { get; }
+
     Action<ICollider2D, ICollider2D>? OnCollision { get; set; }
 
     Vector2 OffsetPosition { get; set; }
@@ -17,7 +19,7 @@ public interface ICollider2D : IBehaviour, IAssignableTransform
     IReadOnlyList<Vector2> Vertices { get; }
 
 
-    bool CheckCollision(Vector2 point, ICollider2D otherCollider);
+    bool CheckCollision(Vector2 point, ICollider2D otherCollider, out Vector2 normal);
 
     void RecalculateVertices();
 }

Game/Physics2D/Collider2DBehaviour.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Diagnostics.CodeAnalysis;
 using Microsoft.Xna.Framework;
 
 using Syntriax.Engine.Core;
@@ -13,26 +14,46 @@ public class Collider2DBehaviour(IList<Vector2> vertices) : BehaviourOverride, I
 {
     private List<Triangle> triangles = new List<Triangle>(32);
     private readonly List<Vector2> _vertices = new List<Vector2>(32);
+    private IRigidBody2D? _rigidBody2D = null;
 
     public Action<IAssignableTransform>? OnTransformAssigned { get => GameObject.OnTransformAssigned; set => GameObject.OnTransformAssigned = value; }
     public Action<ICollider2D, ICollider2D>? OnCollision { get; set; } = null;
 
+
+    private IList<Vector2> verticesOriginal { get; } = vertices;
+
     public Vector2 OffsetPosition { get; set; } = Vector2.Zero;
     public Vector2 OffsetScale { get; set; } = Vector2.One;
     public float OffsetRotation { get; set; } = 0f;
 
     ITransform IAssignableTransform.Transform => Transform;
+    public IReadOnlyList<Vector2> Vertices => _vertices;
+
+    public IRigidBody2D? RigidBody2D
+    {
+        get
+        {
+            if (_rigidBody2D is null)
+                BehaviourController.TryGetBehaviour(out _rigidBody2D);
+
+            return _rigidBody2D;
+        }
+    }
 
     public bool Assign(ITransform transform) => GameObject.Assign(transform);
 
-    public bool CheckCollision(Vector2 point, ICollider2D otherCollider)
+    public bool CheckCollision(Vector2 point, ICollider2D otherCollider, out Vector2 normal)
     {
+        normal = Vector2.Zero;
+
         foreach (var triangle in triangles)
         {
             if (!isInside(point, triangle))
                 continue;
 
             OnCollision?.Invoke(this, otherCollider);
+
+            normal = Transform.Position - otherCollider.Transform.Position;
             return true;
         }
 
@@ -44,7 +65,7 @@ public class Collider2DBehaviour(IList<Vector2> vertices) : BehaviourOverride, I
         triangles.Clear();
 
         _vertices.Clear();
-        foreach (var vertex in VerticesOriginal)
+        foreach (var vertex in verticesOriginal)
             _vertices.Add(vertex + Transform.Position);
 
         Triangle superTriangle = GetSuperTriangle(_vertices);
@@ -227,7 +248,4 @@ public class Collider2DBehaviour(IList<Vector2> vertices) : BehaviourOverride, I
 
         return result;
     }
-
-    public IList<Vector2> VerticesOriginal { get; } = vertices;
-    public IReadOnlyList<Vector2> Vertices => _vertices;
 }

Game/Physics2D/CollisionInformation.cs

@@ -0,0 +1,12 @@
+using Microsoft.Xna.Framework;
+using Syntriax.Engine.Physics2D.Abstract;
+
+namespace Syntriax.Engine.Physics2D;
+
+public record CollisionInformation
+(
+    Vector2 Normal,
+    float Impulse,
+    IRigidBody2D? RigidBodyX,
+    IRigidBody2D? RigidBodyY
+);

Game/Physics2D/PhysicsEngine2D.cs

@@ -59,10 +59,14 @@ public class PhysicsEngine2D : IPhysicsEngine2D
                 for (int colliderIY = colliderIX + 1; colliderIY < colliders.Count; colliderIY++)
                     foreach (var vertex in colliderX.Vertices)
                     {
-                        if (!colliders[colliderIY].CheckCollision(vertex, colliderX))
+                        if (!colliders[colliderIY].CheckCollision(vertex, colliderX, out var collisionInformation))
                             continue;
 
-                        Console.WriteLine($"Collision");
+                        // Console.WriteLine($"Collision");
+                        // if (colliders[colliderIX].BehaviourController.TryGetBehaviour(out IRigidBody2D? rigidX))
+                        //     rigidX.Velocity = -rigidX.Velocity;
+                        // if (colliders[colliderIY].BehaviourController.TryGetBehaviour(out IRigidBody2D? rigidY))
+                        //     rigidY.Velocity = -rigidY.Velocity;
                         break;
                     }
             }