public void randomMove() {
		int index = random.nextInt(9);
		switch (index) {
			case 0 :
				direction = Direction.LEFT;
				break;
			case 1 :
				direction = Direction.LEFT_UP;
				break;
			case 2 :
				direction = Direction.UP;
				break;
			case 3 :
				direction = Direction.RIGHT_UP;
				break;
			case 4 :
				direction = Direction.RIGHT;
				break;
			case 5 :
				direction = Direction.RIGHT_DOWN;
				break;
			case 6 :
				direction = Direction.DOWN;
				break;
			case 7 :
				direction = Direction.LEFT_DOWN;
				break;
			case 8 :
				direction = Direction.STOP;
				break;

			default :
				break;
		}
	}