Let a building be placed over an overlay

NewPlanned for 0.2.0

BuildableOver=yes in an overlay type’s rules.ini section lets a structure be placed on cells that hold that overlay, by the player or by a computer house. The cell’s land type must still allow building, and BuildableOver has no effect on a wall overlay.

Affected entities

AddedBuildableOver
ChangedSave games

Credit: ZivDero, Rampastring