Add roof ridges that go 4 or 3 ways

[Myszkou]

And that's how i sat in my house for 10 min trying to figure out why it didn't count as a room, covering the crossing of 4 roof ridges from underneath fixed the issue, is this a bug?

[lil]

This is more likely because afaik, roof pieces don't themselves count to contain a room; unless that's been recently fixed. Covering the underside of the roof bits with solid blocks has always been necessary in my experience.