How do I make a biome that appears after an event?

Started by Joe Is A Man on

Topic category: Troubleshooting, bugs, and solutions

Joined Dec 2024
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How do I make a biome that appears after an event?

Aight, so I made a nuclear bomb in my mod, and I wanted to make it create a new biome after it explodes. I have the biome made, but I have no clue as to how I get the biome to appear after the explosion. I know people made infection mods that have biomes that spawn around something after a certain point, and I am willing to do a method similar to that.

From what I know, fillbiome has to have coordinates to work, so I don't think running that command would do anything.

 

Any bright ideas from the three people who might read this?

Joined Sep 2025
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Don't even bother with …
Sat, 09/13/2025 - 01:51

Don't even bother with /fillbiome, it's a disaster. Easiest thing is just let the bomb blow up blocks around it on detonation. Such as: grass → scorched dirt, logs → burnt logs, leaves → dead leaves. If you want to make it seem more "alive," have those tainted blocks spread automatically every few ticks or so, like mycelium growing.

You can also include particles (ash, smoke, green dust) and possibly add a custom potion effect on adjacent players to sell the radiation effect. For some variance, don't replace all of the blocks at once, just roll on a random basis so the terrain looks patchy instead of cleanly replaced.

That'll give the illusion of a whole new biome without having to fiddle with the biome system, and it's easier to do.