In fixing this bug, it would be the perfect time to give us access to drawing layers from Lua, hint hint

edit: nevermind, that's probably not possible, you probably don't differentiate between walls and floors when creating _map
edit edit: what am i thinking, the whole point of this picture is demonstrating that floor tiles are considered separately from wall tiles, should be fine, but I dunno, maybe that map:display function actually has all of the layers now that I look, stop listening to me
