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C#-Quelltext

  public class Game1 : Microsoft.Xna.Framework.Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;
        World world;
        Body rectangle, rectangle2, rectangle3, rectangle4, rectangle5, ballcircle;
        Texture2D rectangleSprite, BallSprite;

        private static float _displayUnitsToSimUnitsRatio = 100f;

        public static Vector2 ToDisplayUnits(Vector2 simUnits)
        {
            return simUnits * _displayUnitsToSimUnitsRatio;
        }

        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
        }

        protected override void Initialize()
        {
            base.Initialize();
        }

        protected override void LoadContent()
        {
            spriteBatch = new SpriteBatch(GraphicsDevice);
            BallSprite = Content.Load<Texture2D>("ball");
            rectangleSprite = Content.Load<Texture2D>("tile");

            if (world == null)
            {
                world = new World(new Vector2(0, 1));
            }
            else
            {
                world.Clear();
            }

            ballcircle = BodyFactory.CreateCircle(world, 0.25f, 1.0f);
            ballcircle.BodyType = BodyType.Dynamic;
            ballcircle.Position = new Vector2(2.76f, 0f);
            ballcircle.AngularDamping = 0.4f;
            ballcircle.Restitution = 0.5f;

            rectangle = BodyFactory.CreateRectangle(world, 1.50f, 0.50f, 1.0f);
            rectangle.BodyType = BodyType.Static;
            rectangle.Position = new Vector2(2.96f, 1.16f);
            rectangle.Rotation = -0.3f;
            rectangle.CollisionCategories = Category.Cat5;

            rectangle2 = BodyFactory.CreateRectangle(world, 1.50f, 0.50f, 1.0f);
            rectangle2.BodyType = BodyType.Static;
            rectangle2.Position = new Vector2(1.0f, 1.80f);
            rectangle2.Rotation = 1.0f;
            rectangle2.CollisionCategories = Category.Cat5;

            rectangle3 = BodyFactory.CreateRectangle(world, 1.50f, 0.50f, 1.0f);
            rectangle3.BodyType = BodyType.Static;
            rectangle3.Position = new Vector2(5.1f, 4.80f);
            rectangle3.CollisionCategories = Category.Cat5;

            rectangle4 = BodyFactory.CreateRectangle(world, 1.50f, 0.50f, 1.0f);
            rectangle4.BodyType = BodyType.Static;
            rectangle4.Position = new Vector2(3.6f, 4.80f);
            rectangle4.CollisionCategories = Category.Cat5;

            rectangle5 = BodyFactory.CreateRectangle(world, 1.50f, 0.50f, 1.0f);
            rectangle5.BodyType = BodyType.Static;
            rectangle5.Position = new Vector2(6.6f, 4.80f);
            rectangle5.CollisionCategories = Category.Cat5;
        }
        
        protected override void Update(GameTime gameTime)
        {
            float elapsed = (float)gameTime.ElapsedGameTime.TotalSeconds;
            world.Step(Math.Min(elapsed, (1f / 60f)));   

            base.Update(gameTime);
        }

        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);
            spriteBatch.Begin();
            spriteBatch.Draw(BallSprite, ConvertUnits.ToDisplayUnits(ballcircle.Position),
                                           null,
                                           Color.White, ballcircle.Rotation, new Vector2(BallSprite.Width / 2.0f, BallSprite.Height / 2.0f), 1.0f,
                                           SpriteEffects.None, 0f);

            spriteBatch.Draw(rectangleSprite, ConvertUnits.ToDisplayUnits(rectangle.Position),
                                            null,
                                            Color.White, rectangle.Rotation, new Vector2(rectangleSprite.Width / 2.0f, rectangleSprite.Height / 2.0f), 1f,
                                            SpriteEffects.None, 0f);

            spriteBatch.Draw(rectangleSprite, ConvertUnits.ToDisplayUnits(rectangle2.Position),
                                            null,
                                            Color.White, rectangle2.Rotation, new Vector2(rectangleSprite.Width / 2.0f, rectangleSprite.Height / 2.0f), 1f,
                                            SpriteEffects.None, 0f);

            spriteBatch.Draw(rectangleSprite, ConvertUnits.ToDisplayUnits(rectangle3.Position),
                                            null,
                                            Color.White, rectangle3.Rotation, new Vector2(rectangleSprite.Width / 2.0f, rectangleSprite.Height / 2.0f), 1f,
                                            SpriteEffects.None, 0f);

            spriteBatch.Draw(rectangleSprite, ConvertUnits.ToDisplayUnits(rectangle4.Position),
                                            null,
                                            Color.White, rectangle4.Rotation, new Vector2(rectangleSprite.Width / 2.0f, rectangleSprite.Height / 2.0f), 1f,
                                            SpriteEffects.None, 0f);
            spriteBatch.Draw(rectangleSprite, ConvertUnits.ToDisplayUnits(rectangle5.Position),
                                           null,
                                           Color.White, rectangle5.Rotation, new Vector2(rectangleSprite.Width / 2.0f, rectangleSprite.Height / 2.0f), 1f,
                                           SpriteEffects.None, 0f);
            spriteBatch.End();

            base.Draw(gameTime);
        }
    }