public void init(GameContainer gc) throws SlickException {
   createGround();
   SpriteSheet image = new SpriteSheet(new Image("images/BallSprites.png"), 16, 16);
   player =
       new ObjectPlayerBetter(
           PLAYER_START_X,
           PLAYER_START_Y,
           (int) (image.getSubImage(0, 0).getWidth() * 1),
           (int) (image.getSubImage(0, 0).getHeight() * 1),
           image);
   player.init();
 }