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Fallen Lib Mod Wiki & Guide

Java EditionModGuides 4FAQ 10Related mods 48

Library mod providing shared utilities and code for other mods.

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Contents (4)
  1. Guides
  2. Frequently asked questions
  3. Gallery
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Guides

Step-by-step, in-game.

Create Custom Gem Bonuses with Data PacksPrerequisites Ensure you have both Fallen Lib and Apotheosis installed on version 1.20.1. Gem bonuses are defined…Understand FallenPatch for Mod CompatibilityWhat FallenPatch Does FallenPatch is a runtime patching system that allows mods to modify game code without directly…Use FallenInserter to Inspect Method ReturnsWhat FallenInserter Does FallenInserter is a hook system that intercepts method calls during runtime. It allows…Verify Mod Patches Are Loading CorrectlyCheck the Debug Log Launch Minecraft and let it fully load. Open your latest log file (usually in…

Frequently asked questions

Do I need to install Fallen Lib if I'm just playing with mods?
Only if another mod you're using lists Fallen Lib as a dependency—check your mod's requirements first. If it's required, install it alongside the dependent mod; it won't add content by itself.
How do I know if my patches are actually loading?
Check your latest.log file for patch initialization messages, or use the verification guide to confirm each patch's status. If a patch fails to load, the log will show which class or method couldn't be hooked.
Can I use Fallen Lib with Apotheosis to add custom gem effects?
Yes, on version 1.20.1 you can create a data pack to register custom gem bonuses that Apotheosis will recognize. The data pack guide walks through the JSON structure needed.
What's the difference between FallenPatch and FallenInserter?
FallenPatch hooks into specific classes to apply modifications cleanly, while FallenInserter lets you intercept and inspect (or replace) what a method returns at runtime. Use FallenPatch for structural changes and FallenInserter for value inspection.

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