public void removeNeighboor(Ways w) {
		switch (w) {
		case NORTH:
			if (north != null)
				north.south = null;
			north = null;
			break;
		case SOUTH:
			if (south != null)
				south.north = null;
			south = null;
			break;
		case EAST:
			if (east != null)
				east.west = null;
			east = null;
			break;
		case WEST:
			if (west != null)
				west.east = null;
			west = null;
			break;
		}
	}