private Direction convertToDirection(String direction) {
		switch (direction) {
		case "north":
			return Direction.NORTH;
		case "south":
			return Direction.SOUTH;
		case "west":
			return Direction.WEST;
		case "east":
			return Direction.EAST;
		case "up":
			return Direction.UP;
		default:
			return Direction.DOWN;
		}
	}