public static CollisionGrid CreateGrid(this CollisionWorld world, TiledTileLayer tileLayer)
        {
            var data = tileLayer.Tiles
                       .Select(t => t.Id)
                       .ToArray();

            return(world.CreateGrid(data, tileLayer.Width, tileLayer.Height, tileLayer.TileWidth, tileLayer.TileHeight));
        }
        protected override void LoadContent()
        {
            _spriteBatch = new SpriteBatch(GraphicsDevice);
            _bitmapFont  = Content.Load <BitmapFont>("Fonts/courier-new-32");
            _tiledMap    = Content.Load <TiledMap>("Tilesets/level01");

            _world = new CollisionWorld(new Vector2(0, 900));
            _world.CreateGrid(_tiledMap.GetLayer <TiledTileLayer>("Tile Layer 1"));

            //var zombieAnimator = Content.Load<SpriteSheetAnimationGroup>("Sprites/zombie-animations");
            //_zombie = new Zombie(zombieAnimator);
            //var zombieActor = _world.CreateActor(_zombie);
            //zombieActor.Position = new Vector2(462.5f, 896f);
        }