MCMapper

Minecraft mapping tool to deobfuscate jar file with Mojang provided map file

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Compiling

gradle build

Binary output can be found here:

• MCMapper CLI: ./core/build/libs/MCMapper-XYZ-all.jar

Usage

Simple use with auto-downloader:

java -jar MCMapper.jar -version 1.20.1

To map a client jar file, use:

java -jar MCMapper.jar -version 1.20.1 -client

Note: -in and -map option can also be use to specify location to download

To run mapper on existing jar and map file:

java -jar MCMapper.jar -in server.jar -map server-map.txt

This will map server.jar into server-out.jar with according to server-map.txt

Argument	Note
-in server.jar	Input jar file
-map server.txt	Obfuscation map file
-version	Version of the jar file
-client true	tell downloader to get client (default is server)
-out output_path.jar	Set output jar file
-thread n	Set number of threads to run
-renamevar false	Rename local variable name based on class name
-verify	Verify output jar file with ASM's CheckClassAdapter