Ignacius

Question about decompiling the JARs

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So with the Wurm Unlimited server codebase, it was recommended to me to use the Procyon decompiler for a source-code reference to aid in writing mods.

 

What I'm currently wondering is, would turning around and re-compiling these .java source files and wrapping them up in a new JAR work and be usable? Are there any issues that arise in doing so, e.g. anything lost?

 

This is probably one of the first times I've ever worked with decompiled source and javassist so I'm just wondering how reliable that process is / if anything is lost in doing so. I'm sure of course that recompiling it would work, but wanted to see if anyone else had experience with this and if any problems arose as a result.

Edited by Ignacius

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De-compiling the entire jar, then compiling it again would most likely cause issues. When de-compiled, no matter what program you use, you will get errors on the more complex class files. If not properly fixed, you will encounter many game errors if the server even starts at all. I would recommend only recompile the files you want to change, then add them to the vanilla server.jar overwriting them.

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Better still don't change the original code directly, as it means anytime there is an update your changes get lost. Instead use the techniques that Java provides to override and modify the behavior of the classes. While this doesn't guarantee that things won't break with an update, it greatly reduces the chance.

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Do not change the server.jar file. Use the modloader to modify the code.

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