Map Crash Fixer

Fixing Map Crashes in Minecraft

Maps in Minecraft contain special byte arrays where each element represents a specific color. The game has a limited number of available colors, so the corresponding arrays have a fixed size.

However, developers don't use all possible color options immediately. This results in some elements in the array remaining empty (having NULL values).

Why Do Crashes Occur?

Although unused colors shouldn't cause issues in practice, version 1.17.1 introduced a serious bug. The problem arises when data about non-existent colors is sent to the client. This particularly affects empty maps that contain the value -1. During decoding, this value corresponds to approximately the 63rd index in the map's color array, which causes the game to crash.

Simple and Effective Solution

This mod replaces all problematic empty colors with safe substitutes. This completely eliminates the possibility of crashes related to maps while maintaining the game's full functionality.

Acknowledgments

Special thanks to developer Owen1212055 for creating the source code that formed the basis of this mod.