private void checkKeys(){
		if(Keyboard.typed(KeyEvent.VK_LEFT)){
			moveTiles(Direction.LEFT);
		}
		if(Keyboard.typed(KeyEvent.VK_RIGHT)){
			moveTiles(Direction.RIGHT);
		}
		if(Keyboard.typed(KeyEvent.VK_UP)){
			moveTiles(Direction.UP);
		}
		if(Keyboard.typed(KeyEvent.VK_DOWN)){
			moveTiles(Direction.DOWN);
		}
	}