Client-side NeoForge addon for Minecraft 1.21.1 that fixes mob spawn biome display in Just Enough Resources.
On some Minecraft 1.21.1 NeoForge setups, Just Enough Resources can show mob spawn biomes as Any or Unknown even when the mob has specific biome spawn rules.
This addon waits until the client world, synced biome registry, JER mob registry, and JEI runtime are available, then refreshes JER mob entries with biome data read from the active biome registry.
- Minecraft 1.21.1
- NeoForge 21.1.x
- Just Enough Resources 1.6.0 for 1.21.1
- JEI 19.x for 1.21.1
Put this addon jar in the mods folder together with JER and JEI.
Use the original JER jar. This addon does not include or replace Just Enough Resources.
- Client-side only.
- No entity or biome IDs are hardcoded.
- Biome data is read from the active registry after world join.
- If no biome is found for a mob, JER will still show
Unknown.
This small compatibility addon was created with help from OpenAI Codex.
Use it however you like. You may copy, modify, redistribute, repackage, or use parts of this project in your own work, subject to the MIT License below. Attribution is appreciated but not required.
..\1.21.1\gradlew.bat -p . buildThe release jar is written to:
build/release/JERSpawnBiomeFix-NeoForge-1.21.1-1.0.0.jar
MIT