By default using the commands “x floor” and “x ceiling” results in this behavior:
You see nothing special about the ground.
You see no ceiling here.[/spoiler]
Is there a simple way – without using the extension roomparts.t – to modify a room so that work gives a room a ceiling and recognizes that the floor is in fact the floor and not the ground? I would like to give responses that are more appropriate to indoor spaces but have no need to define behavior for four walls.