I've wrote small mod which introduces new block (fuel generator). This block use some functionality form BuildCraft and IC2.

It's very simple mod: just three files (core, block, tile)

To compile it I put code into installed forge with sources: forge/mcp/src/minecraft

So, this folder now contains minecraft sources and my_mod package with mod's classes.

Then I copy latest binaries (jars) of BuildCraft & IC2 into forge/mcp/lib. (jar with IC2 I got from http://ic2api.player.to:8080/. It successfully works on 1.5.1 mc)

Then I run recompile.bat:

== MCP 7.44 (data: 7.44, client: 1.5.1, server: 1.5.1) ==
"scala" does not support jvm-1.6 target, it is out of date. Ignoring
# found ff, ff patches, srgs, name csvs, doc csvs, param csvs, renumber csv, ast
yle, astyle config
== Recompiling client ==
> Cleaning bin
> Recompiling
- Done in 10.53 seconds
!! Can not find server sources, try decompiling !!

Now, I can found compiled classes in forge/mcp/bin/minecraft

Then I run reobfuscate.bat:

== MCP 7.44 (data: 7.44, client: 1.5.1, server: 1.5.1) ==
"scala" does not support jvm-1.6 target, it is out of date. Ignoring
# found ff, ff patches, srgs, name csvs, doc csvs, param csvs, renumber csv, ast
yle, astyle config
> Creating Retroguard config files
== Reobfuscating client ==
> Cleaning reobf
> Generating md5s
> Packing jar
> Reobfuscating jar
'"C:\Program Files\Java\jdk1.7.0_13\bin\java" -cp "runtime\bin\retroguard.jar;lib;lib\*;jars\bin\mine...' failed : 1

== ERRORS FOUND ==

Exception in thread "main" java.lang.NoClassDefFoundError: net/minecraft/world/World
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Class.java:2451)
        at java.lang.Class.privateGetPublicMethods(Class.java:2571)
        at java.lang.Class.getMethods(Class.java:1429)
        at COM.rl.obf.Cl$ExtNameListUp.getAllDeclaredMethods(Cl.java:1674)
        at COM.rl.obf.Cl$ExtNameListUp.getMethodOutNameUp(Cl.java:1565)
        at COM.rl.obf.Cl.resolveThis(Cl.java:980)
        at COM.rl.obf.Cl.resolveNameSpaceExcept(Cl.java:852)
        at COM.rl.obf.Cl.resolveOptimally(Cl.java:645)
        at COM.rl.obf.ClassTree$6.classAction(ClassTree.java:682)
        at COM.rl.obf.ClassTree.walkTree(ClassTree.java:1483)
        at COM.rl.obf.ClassTree.walkTree(ClassTree.java:1475)
        at COM.rl.obf.ClassTree.walkTree(ClassTree.java:1475)
        at COM.rl.obf.ClassTree.walkTree(ClassTree.java:1466)
        at COM.rl.obf.ClassTree.walkTree(ClassTree.java:1466)
        at COM.rl.obf.ClassTree.walkTree(ClassTree.java:1466)
        at COM.rl.obf.ClassTree.walkTree(ClassTree.java:1447)
        at COM.rl.obf.ClassTree.resolveClasses(ClassTree.java:677)
        at COM.rl.obf.GuardDB.createMap(GuardDB.java:437)
        at COM.rl.obf.GuardDB.remapTo(GuardDB.java:464)
        at COM.rl.obf.RetroGuardImpl.run(RetroGuardImpl.java:182)
        at COM.rl.obf.RetroGuardImpl.obfuscate(RetroGuardImpl.java:131)
        at COM.rl.obf.RetroGuardImpl.obfuscate(RetroGuardImpl.java:113)
        at RetroGuard.main(RetroGuard.java:90)
Caused by: java.lang.ClassNotFoundException: net.minecraft.world.World
        at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
        ... 24 more
==================

FATAL ERROR
Traceback (most recent call last):
  File "runtime\reobfuscate.py", line 56, in reobfuscate
    reobfuscate_side(commands, CLIENT, reobf_all=reobf_all, srg_names=srg_names)

  File "D:\projects\forge\mcp\runtime\mcp.py", line 158, in reobfuscate_side
    commands.applyrg(side, True)
  File "D:\projects\forge\mcp\runtime\commands.py", line 948, in applyrg
    self.runcmd(forkcmd)
  File "D:\projects\forge\mcp\runtime\commands.py", line 1173, in runcmd
    raise CalledProcessError(process.returncode, forkcmd, output)
CalledProcessError: Command '"C:\Program Files\Java\jdk1.7.0_13\bin\java" -cp "runtime\bin\retroguard.jar;lib;lib\*;jars\bin\minecraft.jar;jars\bin\jinput.jar;jars\bin\lwjgl.jar;jars\bin\lwjgl_util.jar" RetroGuard -notch temp\client_ro.cfg'
returned non-zero exit status 1

 

My environment:

1. windows 7

2. java 7_13 (I tried latest java 6, but it did not help)

Please, help me. I really do not have any ideas what is wrong. I tried to find the class manually in forge/mcp/bin/minecraft directory; in forge/temp/client_recomp.jar - it exists.

 

Thanks.

Does anybody have idea? Maybe I put mod code to wrong folder? Or could somebody provide link to mod example sources?

I'm having the exact same problem.  I think it's an MCP glitch, the next version may fix the problem.

I'm having the exact same problem.  I think it's an MCP glitch, the next version may fix the problem.

 

No it's not:

"scala" does not support jvm-1.6 target, it is out of date. Ignoring

 

I had the problem on my linux machine, too. Update scala and you should be fine.

MultipleMonomials and SanAndreasP thanks for your replays!

I try to update scala version (but on windows). Now it is v 2.10.1. But I had the same error.

I looked through commands.py and found the reason of the problem in checkscala method:

self.runcmd('scala -target:jvm-1.6 -version', quiet=False)

causes error 2, it means that file doesn't exists. I fix it for windows only:

self.runcmd('scala.bat -target:jvm-1.6 -version', quiet=False)

but then it returned non zero return code (I really don't' know why), and output was:

Scala code runner version 2.10.1 -- Copyright 2002-2013, LAMP/EPFL

I'm not so experienced in Python, and it's very difficult to understand what the right flow should be. Could someone provide any explanation of what this method should do and what right output should be?

 

I tried to rewrite checkscala method, and remove all checks (I know that my scala version is right 2.10.1). And just pass the line where it sets cmdscala variable:

    def checkscala(self):
        results = []
        if not results:
            try:
			# TODO:  Verify at least version 2.10
                self.runcmd('scalac.bat -version', quiet=True)
                results.append('')
            except (CalledProcessError, OSError):
			pass
    	if not results:
        self.logger.warning('"scalac" is not found on the PATH.  Scala files will not be recompiled')
        self.cmdscalac = None
else:
        self.cmdscalac = '"%s"' % os.path.join(results[0], 'scalac.bat')

(of course it work only for windows with right path var in environment)

But, when I run recompile (it works in second times longer then without scala) and then reobfuscate I got exactly the same error.