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Add custom mobs to vanilla biomes

1.18.2

Posted April 7, 20241 yr

This is probably incredibly simple but I'm not sure how I can modify the "spawners" list for vanilla biomes. I currently have custom mobs successfully spawning in my custom biomes.

Can this be done in the main mod file?

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April 7, 20241 yr

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I figured it out. For anybody interested, I added a listener in my main mod file for the BiomeLoadingEvent. When the biome name equals the biome(s) I'm interested in, I add my custom mob to the spawner data.

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How to add my mob to another mod's biome in 1.20.1.

You can add mob spawns using Forge's Biome Modifiers feature. I won't go into details on how to use a data generator for them, but here's a simple example:
{ "type": "forge:add_spawns", // Required "biomes": "#namespace:biome_tag", // Accepts a biome id, [list of biome ids], or #namespace:biome_tag "spawners": { "type": "namespace:entity_type", // Type of mob to spawn "weight": 100, // int, spawn weighting "minCount": 1, // int, minimum pack size "maxCount": 4 // int, maximum pack size } }This JSON file would go somewhere like this: data/modid/forge/biome_modifier/your_biome_modifier.json

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By FireDude123 · Posted Yesterday at 12:07 AM1 day
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I'm on 1.20.1 and was wondering if there was a way to add a mob I am going to make to a other mod's biome (Regions Unexplored in this case). I am trying to figure this out before I start coding the mod. Could someone point me to a good guide on this? I saw some things about biome modifier's but all the resources are either to short, unhelpful or for a different version. Thanks in advance. (i am a beginner but i have java and modding knowledge so this isn't like a "i am new and don't know anything about coding" problem btw)

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Add custom mobs to vanilla biomes

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How to add my mob to another mod's biome in 1.20.1.

How to change player renderer and transform model parts?

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