// this code assumes you're using a 3x4 or 4x4 type of grid layout
        // common with RPG Maker character tile sets.

        public SpriteRPGPlayer(int cols, int width, int height, Vector2 offset, int playerNum = 0)
        {
            this.cols   = cols;
            this.width  = width;
            this.height = height;
            index       = playerNum;

            Vector2 idle;


            SpriteGrid grid = new SpriteGrid(4, cols, width, height, offset);



            idle         = new Vector2(cols - 1, 0);
            animateDown  = new SpriteAnimator(idle, grid);
            idle         = new Vector2(cols - 1, 1);
            animateLeft  = new SpriteAnimator(idle, grid);
            idle         = new Vector2(cols - 1, 2);
            animateRight = new SpriteAnimator(idle, grid);
            idle         = new Vector2(cols - 1, 3);
            animateUp    = new SpriteAnimator(idle, grid);


            for (int i = 0; i < cols; i++)
            {
                animateDown.Add(new Vector2(i, 0));
                animateLeft.Add(new Vector2(i, 1));
                animateRight.Add(new Vector2(i, 2));
                animateUp.Add(new Vector2(i, 3));
            }

            rect = grid.getRectangle(new Vector2(cols - 1, 0));

            origin = new Vector2(width / 2.0f, height / 2.0f);
        }