- You can close doors while a monster is standing on the door tile. It can still attack and be ataccked and also move, so it's not stuck or anything.
Yeah, that was a bug in DoomRL too. I just fixed it :)
- Monsters never open any doors
Not yet.
- All doors appear brown while closed but some turn white when opened. Those that turn white cannot be closed again (game says they are blocked) those that stay brown can always be closed (even if a monster or an item is on the door tile)
Don't you remember Diablo? There were doors that got stuck once opened :)
- Monsters killed on a door tile never leave a corpse
Simillary to DoomRL -- Door is a tile, corpse is a tile -- so to maintain the ability to close the door, I need to discard the corpse.
I haven't encountered any invisible monsters yet, but then again those aren'T supposed to shop up until the caverns iirc ;)
Yeah, but there's a bug that makes normal monsters invisible :-P