static void showDirection(int dir) {
		switch (dir) {
		case NORTH:
			System.out.println("Moving north");
			break;
		case SOUTH:
			System.out.println("Moving south");
			break;
		case EAST:
			System.out.println("Moving east");
			break;
		case WEST:
			System.out.println("Moving west");
			break;
		default:
			break;
		}
	}