Add missing 2D physics methods

src/Sparkle.Test/CSharp/Test2DScene.cs

@@ -22,6 +22,7 @@ public class Test2DScene : Scene {
         Cam2D cam2D = new Cam2D(new Vector2(0, 0), new Vector2(0, 0), Cam2D.CameraFollowMode.Smooth);
         this.AddEntity(cam2D);
 
+        // PLAYER
         Test2DEntity player = new Test2DEntity(new Vector2(0, -40));
         player.Rotation = Quaternion.CreateFromYawPitchRoll(0, 0, 90 * RayMath.Deg2Rad);
         this.AddEntity(player);
@@ -30,6 +31,7 @@ public class Test2DScene : Scene {
             Density = 1.0F,
         }));
 
+        // GROUND
         Test2DEntity entity = new Test2DEntity(new Vector2(0, 0));
         this.AddEntity(entity);
 

src/Sparkle.Test/CSharp/TestEntity.cs

@@ -22,17 +22,17 @@ public class TestEntity : Entity {
 
     protected override void FixedUpdate() {
         base.FixedUpdate();
-
+        
         RigidBody3D body3D = this.GetComponent<RigidBody3D>();
 
         if (!body3D.World.RayCast(new JVector(this.Position.X, this.Position.Y - 8, this.Position.Z), -JVector.UnitY, default, default, out Shape? shape, out JVector normal, out float fraction)) {
-            body3D.Body.AddForce(new JVector(0, 200, 0));
+            body3D.AddForce(new Vector3(0, 200, 0));
         }
     }
 
     protected override void Update() {
         base.Update();
-
+        
         /*
         if (Input.IsKeyPressed(KeyboardKey.U)) {
             this.GetComponent<ModelRenderer>().AnimationPlayer.Play(1, true, 0.5F);