The river cave needs to get a roof about cataclysm-dda

[Procyonae]

I think I'll be able to do this and #74479 I'm just a lil busy irl for the next few weeks, I'll try to take a look on Friday though

[Maleclypse]

@Procyonae @jbytheway Is there a way for ground level plus mutables to have either another mutable tile if appropriate or a roofing capstone type tile?

[jbytheway]

I think you should be able to add a roof tile and link it as just another part of the mutable special, yes. I don't recall ever explicitly testing that, though.

[PatrikLundell]

I tried various variants with the monster, but never succeeded (after the optimistic start of trying to tackle both above ground tiles I ended up with only the roof of the starting one to deal with one issue at a time). Of course, I don't know how it's supposed to work, so I tried various variations of the pattern I perceived.
Whenever I sort of had it hooked up and it didn't complain at game load time, it blew up on placement with a diagnostic error message that somehow rejected both the roof definition (stating it's placed on an air tile with air tiles all around it to the sides), but also the one below the starting tile (soil tile with soil tiles on the cardinal sides), and I think there were other failures further down the line.
The diagnostic message didn't say what was wrong though, only what the terrain conditions were.

The configuration that passed through loading (but blew up on application)) had the roof tile specified to be above the starting tile and had to be listed as a joining tile in order to pass loading.