If I build a screw pump in such a way that its only exposure to outside is the top surface of its impassable tile, can it be destroyed by a building destroyer?
The exact setup is:
z-level +1:
F F F
F I F
F F F
z-level 0:
O O O
O I P
O O O
…where "F" is a floor, "O" is open space, "I" is the impassable tile of a screw pump, and "P" is the passable tile of a screw pump.
The building destroyer does not have any other valid path to the screw pump on its own z-level (I know this matters for destroying locked floor hatches from below). It is approaching from above the pump (z-level +1).
Best Answer
No. Creatures cannot attack buildings on other Z-levels.