terrain.noise_mid_plainRegional detail
What it does
The ground texture for the middle (grassy) strip of the map. It uses a softer, puffier kind of noise than the desert and snow strips — that's why the grasslands look rounder and smoother than the rest of the map.
What you seeSoft rounded rolling ground across the grassy middle belt. amp=0 flattens the grassland completely.
Gotcha
The low loot strip of the map counts as “middle” no matter which biome it crosses — so cranking the mid commands can build surprise bumps inside the desert or snow.
See it on a real map
Reference seed 12345, size 4500. “Try live” opens the generator with the value applied.
default oct=8,freq=1,amp=0.035,offset=-0.01
amp=0 — billiard-table grasslands try live →
amp=0.1 — lumpy rolling heartland try live →
oct=3 — soft rounded open meadows try live →