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missing class when loading coremod :\ wtfbbq

hydroflame

By hydroflame
in Modder Support

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hydroflame World Shaper

hydroflame

Posted
Posted

hey guys, im trying to make a coremod for 1.6.2 but when i insert the coremod into the mods folders and launch the game i get a ClassNotFoundException on cpw.mods.fml.common.asm.FMLSanityChecker

 

my log:

 

  Reveal hidden contents

 

 

my IFMLoadingPlugin:

package com.hydroflame.asm2;

import java.io.File;
import java.util.Map;

import cpw.mods.fml.relauncher.IFMLLoadingPlugin;

public class ForgeRevCore implements IFMLLoadingPlugin{

public static File location;
@Override
@Deprecated
public String[] getLibraryRequestClass() {
	return null;
}

@Override
public String[] getASMTransformerClass() {
	System.out.println("returning the transformer class");
	return new String[]{ForgeRevTransformer.class.getName()};
}

@Override
public String getModContainerClass() {
	return null;
}

@Override
public String getSetupClass() {
	return null;
}

@Override
public void injectData(Map<String, Object> data) {
	System.out.println("setting the location file");
	location = (File) data.get("coremodLocation");
}

}

 

transformer class:

package com.hydroflame.asm2;

import java.io.File;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

import net.minecraft.launchwrapper.IClassTransformer;

public class ForgeRevTransformer implements IClassTransformer {

@Override
public byte[] transform(String name, String obfName, byte[] bytecode) {
	if (name.equals("net.minecraft.client.Minecraft")||name.equals("ats")) {
		bytecode = patchClassInJar(name, bytecode, obfName, ForgeRevCore.location);
	}
	return null;
}

private byte[] patchClassInJar(String name, byte[] bytes, String ObfName,
		File location) {
	try {
		// open the jar as zip
		ZipFile zip = new ZipFile(location);
		// find the file inside the zip that is called te.class or
		// net.minecraft.entity.monster.EntityCreeper.class
		// replacing the . to / so it would look for
		// net/minecraft/entity/monster/EntityCreeper.class
		ZipEntry entry = zip.getEntry(name.replace('.', '/') + ".class");

		if (entry == null) {
			System.out.println(name + " not found in " + location.getName());
		} else {

			// serialize the class file into the bytes array
			InputStream zin = zip.getInputStream(entry);
			bytes = new byte[(int) entry.getSize()];
			zin.read(bytes);
			zin.close();
			System.out.println("[" + "ForgeRevCore" + "]: " + "Class "+ name + " patched!");
		}
		zip.close();
	} catch (Exception e) {
		throw new RuntimeException("Error overriding " + name + " from "+ location.getName(), e);
	}

	// return the new bytes
	return bytes;
}

}

 

coremod.jar structure:

*META-INF

**MANIFEST.MF

*ats.class

*net

**minecraft

***client

****Minecraft.class

 

i looked into versions/1.6.2-Forge9.10.0.804 and effectivelly the class is not there but i used the installer.

 

not sure why/where i screwed up

 

i based my method off this tutorial:

http://www.minecraftforum.net/topic/1854988-tutorial-162-changing-vanilla-without-editing-base-classes-coremods-and-events-very-advanced/

the "replcaing a whole miencraft class" part

how to debug 101:http://www.minecraftforge.net/wiki/Debug_101

-hydroflame, author of the forge revolution-

hydroflame World Shaper

hydroflame

Posted
  • Author
Posted

i might be wrong but i kindof doubt that because it would mean that people would HAVE to add option to launch. Afaik mods/coremods are suppose to be a drag n drop thing and adding this kind of option inside the coremod wouldnt make sens as java is already launched when this file is read.

 

maybe im wrong though

 

how to debug 101:http://www.minecraftforge.net/wiki/Debug_101

-hydroflame, author of the forge revolution-

GotoLink World Shaper

GotoLink

Posted
Posted

From Optifine installation:

Click "Edit Profile"

- Select the checkbox "JVM Arguments" and in the field next to it add

"-Dfml.ignoreInvalidMinecraftCertificates=true -Dfml.ignorePatchDiscrepancies=true"

- Click "Save Profile"

hydroflame World Shaper

hydroflame

Posted
  • Author
Posted

because im pretty sure that its not required as i havnt seen mention of that anywhere

how to debug 101:http://www.minecraftforge.net/wiki/Debug_101

-hydroflame, author of the forge revolution-

Mew Dragon Slayer

Mew

Posted
Posted
  On 8/4/2013 at 11:32 PM, GotoLink said:

Are you sure you can return null there ?

@Override
public String getModContainerClass() {
	return null;
}

@Override
public String getSetupClass() {
	return null;
}

 

Mod container class is only required if you want to have mod metadata. In which case he doesn't (I know this because I do). Stup class... I made a coremod for 1.6.2 and didn't have that running either. So no its not needed. A coremod is like a paxel. It is a lot of different functions all put together. In this case though, all those methods are like the mould needed for the paxel, but I only want the shovel part of it. I also only have that mould. So I only fill in the shovel section. Simple as that.

I am Mew. The Legendary Psychic. I behave oddly and am always playing practical jokes.

 

I have also found that I really love making extremely long and extremely but sometimes not so descriptive variables. Sort of like what I just did there xD

hydroflame World Shaper

hydroflame

Posted
  • Author
Posted

ding ding ding, bonus point to GotoLink because im an idiot who cant search properly, i am returning null in my transform method meaning every class that gets through will be erased causing the class to simply not exists

 

xD derp mode enabled

how to debug 101:http://www.minecraftforge.net/wiki/Debug_101

-hydroflame, author of the forge revolution-

Mew Dragon Slayer

Mew

Posted
Posted
  On 8/5/2013 at 12:50 AM, GotoLink said:

Well maybe you can help him more than i ?

 

I found this thread with same issue here

 

Not really :P

 

  Quote

ding ding ding, bonus point to GotoLink because im an idiot who cant search properly, i am returning null in my transform method meaning every class that gets through will be erased causing the class to simply not exists

 

xD derp mode enabled

 

Well, not quite the methods that affected the transformer classes, but still. Good call Gotolink :D

I am Mew. The Legendary Psychic. I behave oddly and am always playing practical jokes.

 

I have also found that I really love making extremely long and extremely but sometimes not so descriptive variables. Sort of like what I just did there xD

kris91268 Stone Miner

kris91268

Posted
Posted

Forge has a coremods folder in the .minecraft directory. I'm pretty sure your mod should go in there. In your main post, you stated that you placed the mod in the mods folder.

hydroflame World Shaper

hydroflame

Posted
  • Author
Posted

all good ^^

 

to future reader, if you need to change "net.minecraft.client.Minecraft" via ASM, good luck ^^ i was never able to do it i foudn another way around doing what i wanted (version 1.6.2)

at least its not feasable via replacing the whole class

how to debug 101:http://www.minecraftforge.net/wiki/Debug_101

-hydroflame, author of the forge revolution-

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