Using ASM

[RandomBK]

Hi, I need to replace the contents of the method public void updateWeatherBody() in World, without editing the base class. From what I've read, it seems like I need to use ASM to do this at runtime. Can anyone help?

[uParrot]

I don't know how to help you, but it seems you have the same sort of question I do(http://www.minecraftforge.net/forum/index.php/topic,3465.0.html). If you figure it out, there'd be cookies in it for you ;p

[flAked]

I don't know if his mod setup is still up-to-date on how to do things, but this might get you started:

 

https://github.com/dries007/SimpleCore2/tree/master/src/common/dries007/SimpleCore/asm

 

Edit: I'm however not sure how to deal with legal issues if I want to replace a base-class and upload it to github... anybody knows how to do that properly?

[keepcalm]

You might want to look at how NEI does it, or look at LuaForge

[denoflions]

The only way I've seen it done is to modify the class and package it with your coremod. Override the class with a Transformer like how NEI does.

 

Here is an example of a class overrider in the same vein as NEI. Link. Here is it being used in a Transformer. Link.

 

You set the location in your FMLLoadingPlugin in injectData with a line like:

 

location = (File) data.get("coremodLocation");