Override masks (optional)
Paint in GIMP/Krita as equirectangular grayscale PNGs, any size (2:1), 8- or 16-bit. Mid-gray (32768 in 16-bit, 128 in 8-bit) = neutral / no change. Transparent or missing = neutral.
| File | Effect (white = +1, black = −1) |
|---|---|
land_hint.png |
bias toward land (+) or sea (−) on top of the sketch |
mountain_hint.png |
extra uplift (+) |
o2_zones.png |
O₂ modifier: 1 + 0.5·v (world.toml [masks] o2_range) |
gravity_zones.png |
gravity modifier: 1 + 0.7·v; v < 0 = low-g zone (relief ×, spires) |
lock.png |
where brighter than 75% grey (> +0.5), coastline follows land_hint strictly |
Rebuild: .venv/bin/python mapgen.py build (masks are part of the cache key).