boolean allowRounded = rounded &&
insetWallWE == insetWallNS &&
insetCeilingWE == insetCeilingNS &&
neighborFloors.isRoundable();
StairWell stairLocation = getStairWellLocation(allowRounded, neighborFloors);
if (!needStairsUp)
stairLocation = StairWell.NONE;
// work on the basement stairs first
for (int floor = 0; floor < depth; floor++) {