public class Map
    {
        List<MapTile> tiles;

        public List<MapTile> Tiles
        {
            get { return tiles; }
            set { tiles = value; }
        }

        public IOrderedEnumerable<MapTile> GetTilesInDrawOrder()
        {
            return from x in Tiles
                   orderby x.Layer ascending
                   select x;
        }
    }

    public class MapTile
    {
        Point position;

        public Point Position
        {
            get { return position; }
            set { position = value; }
        }

        string tilesetHash;

        public string TilesetHash
        {
            get { return tilesetHash; }
            set { tilesetHash = value; }
        }

        Point tilesetOffset;

        public Point TilesetOffset
        {
            get { return tilesetOffset; }
            set { tilesetOffset = value; }
        }

        int layer;

        public int Layer
        {
            get { return layer; }
            set { layer = value; }
        }

        PlayerPass playerPass;

        public PlayerPass PlayerPass
        {
            get { return playerPass; }
            set { playerPass = value; }
        }

        public Texture2D GetTexture()
        {
            return Utils.g.Service<AssetCache>().GetAsset<Tileset>(tilesetHash).GetTexture(Utils.g.GraphicsDevice);
        }

        public Rectangle GetSourceRect()
        {
            return new Rectangle((int)TilesetOffset.X-1 * Utils.TILESIZE, (int)TilesetOffset.Y-1 * Utils.TILESIZE, Utils.TILESIZE, Utils.TILESIZE);
        }
    }