Summary
Some resource nodes and collectibles live underground in caves, so they have no clean position on the surface biome overlay (#239). Example: the impure Uranium node in a water-covered cave beneath Titan Forest — on the top-down map it sits over water, ~53 m outside any surface biome.
Current handling (fine for now)
biomeAt(x,y) resolves these to the nearest surface biome via the fallback (e.g. that Uranium node → Titan Forest), which reads naturally ("the uranium's in the caves under Titan Forest"). The biome trace deliberately does not distort surface polygons out over water/caves to swallow them.
Future enhancement
A dedicated cave / underground layer so the foreman can:
- distinguish "in the caves beneath X" from "on the surface in X",
- describe cave systems / entrances and the resources within them.
Likely needs cave-volume geometry from the game assets (relates to the base-map renderer spike, #246) or hand-annotation.
Not blocking
Relates to #239 (biome overlay) and #64 (interactive map). The nearest-biome fallback is an acceptable default until this lands.
Summary
Some resource nodes and collectibles live underground in caves, so they have no clean position on the surface biome overlay (#239). Example: the impure Uranium node in a water-covered cave beneath Titan Forest — on the top-down map it sits over water, ~53 m outside any surface biome.
Current handling (fine for now)
biomeAt(x,y)resolves these to the nearest surface biome via the fallback (e.g. that Uranium node → Titan Forest), which reads naturally ("the uranium's in the caves under Titan Forest"). The biome trace deliberately does not distort surface polygons out over water/caves to swallow them.Future enhancement
A dedicated cave / underground layer so the foreman can:
Likely needs cave-volume geometry from the game assets (relates to the base-map renderer spike, #246) or hand-annotation.
Not blocking
Relates to #239 (biome overlay) and #64 (interactive map). The nearest-biome fallback is an acceptable default until this lands.