biomemap is nil on generating caverealm (subterrane fork) only with mg about mg

[Poikilos]

I closed the issue at caverealms since the remaining issue seems to be with mg (correct me if I'm wrong).

[Ekdohibs]

I think the issue is with caverealm, since I think biomemap is not defined if the mapgen used does not support it. Since mg uses the "singlenode" mapgen, biomemap is not supported in it.

[Poikilos]

Thanks, I'll check back in over there.

[Poikilos]

If possible, I could use some more info to help the maintainers fix caverealms or subterrane:
I understand now that mg uses the singlenode mapgen. However:

• Does mg populate minetest.registered_biomes?
• Is there some way to get mg's biome name or ground node (such as "default:dirt_with_grass") at given x,y,z location or a location on the x-z ground plane (so subterrane can decorate "native" caves according to mg's ground as opposed to crashing or leaving out biome-specific decorations)?
  I'll check in at the forum if there is not a simple answer.

[Ekdohibs]

mg does not populate minetest.registered_biomes, and even completely ignores it if you fill it. Getting the ground node at a point is not easy, unfortunately -- I think the best to do is to use mg's get_biome_table and get_nearest_biome functions, as done in the code.

[Poikilos]

ok thanks