private void randomMove() {
		switch (random.nextInt(4)) {
		case 0:
			currentMove = MoveDir.MOVE_LEFT;
			break;
		case 1:
			currentMove = MoveDir.MOVE_RIGHT;
			break;
		case 2:
			currentMove = MoveDir.MOVE_UP;
			break;
		case 3:
			currentMove = MoveDir.MOVE_DOWN;
			break;
		}
		gameObject.setMoveDir(currentMove);
	}