Modifying Biomes

[worldly harness]

Hello! I'm thinking about making a sentient sculk datapack, where the sculk grows and spreads naturally and is intelligent, finding and melting structures and assimilating the entire world. I'm wondering if there's any easy way to change the deep dark biome, adding ambient particles, fog, and maybe even custom music & sounds. How would I do this? Is there a biome file I can edit?

[hot shore]

<@&1201956957406109788>

Someone will come and help soon!

💬 While you wait, take this time to provide more context and details.

🙇 If nobody has answered you by <t:1727900845:t>, feel free to use the Summon Helpers button to ping our helper team.

✅ Once your question has been resolved (or you no longer need it), please click Resolve Question or run /resolve

[alpine fractal]

Yep, you're exactly right

You'll just need to grab the biome file from the vanilla data pack (minecraft/worldgen/biome/deep_dark.json) and duplicate it in your data pack at the same file path. That'll overwrite the vanilla biome

From there, there should be fields to add particles, music, ambient sounds, etc. If there aren't, you can check the wiki or use Misode's generator to see how they should be formatted (or even if they are included but empty)

[worldly harness]

How exactly do I access the vanilla datapack? I can't find it in the files

[alpine fractal]

It's in the jar file for the version you're working in, found in your .minecraft folder, under versions

You'll need to open it up with a program like 7zip or Winrar.

[worldly harness]

Oh, oki! Thank you!