RigNRoll-modding-java-toolkit

Contains decompiled java classes from RignNRoll scripts.jar file and some new classes ('rickroll' namespace). Java classes with compilation errors or that causes bugs were renamed from .java to .java_broken

Can be used to compile a modified scripts.jar to replace the one in the game directory.

Build guide

1) Clone the repository

git clone https://github.com/JosueCA/RigNRoll-modding-java-toolkit.git

2) Create a new Java project in Eclipse pointing to the cloned directory

Eclipse > File > New > Java Project

• Project Name: RigNRoll2026
• Location: RigNRoll-modding-java-toolkit

3) Remove scripts_jar_original_cfr from the build path

Right click on the directory > Build Path > Remove from build path

4) Set the JRE System Library to Java 1.5

Right click on project > Properties > Java Build Path > Libraries tab

You can use the JVM bundled with the game: c/Program Files/1C/RigNRoll/Jvm

5) Create a fake Run Configuration

Run > Run Configurations > Java Application

• Name: FAKE
• Project: RigNRoll2026
• Main class: rickroll.Main

6) Export the JAR

Eclipse > File > Export > Java > Runnable JAR file

• Launch Configuration: FAKE - RigNRoll 2026
• Accept the "This operation repacks referenced libraries" prompt

The following warnings after export are expected and can be ignored:

JAR export finished with warnings. See details for additional information.
Exported with compile warnings: RigNRoll2026/src/adjusting/Variables.java
duplicate entry: org/benf/cfr/reader/api/CfrDriver$Builder.class

Compilation errors are not OK. If you see any, make sure scripts_jar_original_cfr has been removed from the build path (step 3).

7) Replace the JAR in the game directory