Used to generate a list of biomes and their parameters from a specific set of selected biomes. This can then be pasted into a .json and used in a datapack for Minecraft. It should work for versions 1.16 and up.
Of note: Terrain generation appears to be unaffected as Minecraft first generates terrain and then assigns it a biome. This biome then impacts structure generation, mob spawning, biome color, and other such features.
To change terrain generation, edit the .json files within the noise_settings folder of the datapack later during creation.
Edit config.py so biomelist contains the name of every biome you want to either include or exclude, including the vanilla/mod namespace, e.g. minecraft:frozen_river, or byg:autumn_forest, or any other mod_name:biome_name.
To work with modded biomes, add them to biomelist.json alongside vanilla biomes.
Run main.py, specifying -m for --mode - "include" to whitelist your biomes, or "exclude" to blacklist them. The resulting biome JSON will appear at out.json
Find datapack examples here and here.
Get a datapack there or start your own, find normal.json or your desired worldgen option under worldgen/world_preset and replace the "preset": "minecraft:overworld" field with "biomes": followed by the contents of out.json.
Example:
{
"dimensions": {
"minecraft:overworld": {
"type": "minecraft:overworld",
"generator": {
"type": "minecraft:noise",
"settings": "minecraft:sealevel_overworld",
"biome_source": {
"type": "minecraft:multi_noise",
"biomes": [
{
"biome": "minecraft:lush_caves",
"parameters": {
"temperature": [
-1,
1
],
"humidity": [
0.7,
1
],
"continentalness": [
-1,
1
],
"erosion": [
-1,
1
],
"weirdness": [
-1,
1
],
"depth": [
0.2,
0.9
],
"offset": 0
}
},
{
"biome": "minecraft:deep_dark",
"parameters": {
"temperature": [
-1,
1
],
"humidity": [
-1,
1
],
"continentalness": [
-1,
1
],
"erosion": [
-1,
-0.375
],
"weirdness": [
-1,
1
],
"depth": 1.1,
"offset": 0
}
}
]
}
}
},
"minecraft:the_end": {
"type": "minecraft:the_end",
"generator": {
"type": "minecraft:noise",
"settings": "minecraft:end",
"biome_source": {
"type": "minecraft:the_end"
}
}
},
"minecraft:the_nether": {
"type": "minecraft:the_nether",
"generator": {
"type": "minecraft:noise",
"settings": "minecraft:nether",
"biome_source": {
"type": "minecraft:multi_noise",
"preset": "minecraft:nether"
}
}
}
}
}
To complete your pack, refer to the wiki page and tutorial
This is not in any way endorsed by Mojang or any of their affiliates