Touhou Little Maid Garage Kit Fix

Touhou Little Maid: Garage Kit Fix (MaidFix)

MaidFix is an ultra-lightweight (6.95 KB), standalone defensive compatibility patch designed to resolve fatal serialization and rendering crashes caused by Touhou Little Maid garage kit blocks in cross-loader translation setups (such as running NeoForge builds via Kilt on Fabric 1.21.1).

The Problem

When running Touhou Little Maid in experimental cross-loader environments (e.g., Fabric with Kilt/Sinytra Connector), certain NeoForge-specific block entity serialization logic fails to populate directional state fields correctly.

Specifically, when placing, breaking, or loading chunks containing a garage kit block, the block entity attempts to read a directional facing property that evaluates to null. This immediately triggers an unhandled NullPointerException (NPE) during chunk rendering or serialization, causing the client or the entire integrated server to crash.

How MaidFix Resolves It

MaidFix acts as a surgical safety net using SpongePowered Mixin:

• Targeted Interception: Injects at the head of the serialization and state-handling methods of the target garage kit block entity.
• Defensive Fallback: If the facing reference is detected as null, the patch uses lightweight runtime reflection to silently supply a valid default direction before the game engine attempts to read it.
• Silent Non-Invasive Operation: If the object already has a valid orientation (or when running on a native, fully-supported environment), MaidFix performs no modifications and passes execution straight through with zero overhead.
• Zero Failure Side-Effects: Configured with defaultRequire = 0 and isolated try-catch blocks. If upstream classes change or the target is absent, the mixin safely detaches without crashing the game.

Key Features

• Complete Independence: Requires NO external libraries. It does not depend on the Fabric API, secondary utility libraries, or the upstream Touhou Little Maid mod at compile/runtime.
• Minimal Footprint: Total compiled binary size is only 6.95 KB. No assets, no unnecessary background tasks, and zero impact on client frame rates or server tick rates.
• Universal Compatibility: Safe to drop into any Fabric 1.21.1 environment or modpack. If the crash condition is never triggered, the patch remains dormant.

Important Disclaimer

• Crash Fix Only: This mod is strictly an emergency crash-prevention tool. It guarantees that the world, chunk, and client do not crash due to missing direction values.
• Rendering Pipelines: It cannot reconstruct missing model rendering or custom animations if the underlying translation layer (such as Kilt) does not fully support NeoForge's custom block entity renderers (BER). The garage kit may appear invisible or as a placeholder, but the game will remain fully playable.

Source & License

• License: Public Domain / CC0 1.0 Universal. You are free to redistribute, modify, or bundle this patch in any modpack without permission.
• Source Code: Clean, auditable, and open-source on GitHub.