Malstone x Fantasy Ending Compatibility

A compatibility patch for Minecraft Forge 1.20.1 that fixes the game-crashing conflict between Malstone and Fantasy Ending.

The problem

When both mods are installed, creating a world crashes with a java.lang.StackOverflowError, caused by an endless loop between getMaxHealth and getHealth.

The fix

Fantasy Ending routes every getHealth() call through EntityASMUtil#special_getHealth, which asks for getMaxHealth(). Malstone adds code to getMaxHealth() that calls Player#isAlive(), and vanilla isAlive() calls getHealth() again. The result is infinite recursion.

This patch adds a per-thread re-entrancy guard around the max-health lookup:

• The first call behaves exactly as before, so Malstone's ToughBlood bonus still works.
• Any nested call simply returns the vanilla max-health value instead of recursing forever.

The patch only activates when both Malstone and Fantasy Ending are installed. If either mod is missing, it does nothing.

Requirements

• Minecraft 1.20.1
• Forge 47.x
• Malstone
• Fantasy Ending

Installation

1. Install Malstone and Fantasy Ending as usual.
2. Drop malstone_fe_compat-1.0.0.jar into your mods folder.
3. Launch the game. Creating a world no longer crashes.

Notes

• This is a client/server-side patch; install it on both sides if you play on a server.
• The repository owner does not understand code or GitHub; this project was created entirely by DeepSeek (an AI assistant).