13 replies to this topic

[Thomasims3]

Hello,

I am rewritting CCPortable, a mod that adds PDAs to Computercraft and I'm stuck on the TileEntity part.
I think the code is correct (and eclipse doesn't give errors) but when i lauch it, I get this crash log:

2013-02-13 12:07:36 [FINER] [ForgeModLoader] Sending event FMLConstructionEvent to mod CCPortable
2013-02-13 12:07:36 [INFO] [STDERR] Exception in thread "Minecraft main thread" java.lang.NoClassDefFoundError: CCPortable/common/TileEntityPDA
2013-02-13 12:07:36 [INFO] [STDERR]  at java.lang.Class.getDeclaredMethods0(Native Method)
2013-02-13 12:07:36 [INFO] [STDERR]  at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
2013-02-13 12:07:36 [INFO] [STDERR]  at java.lang.Class.getDeclaredMethods(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.common.FMLModContainer.gatherAnnotations(FMLModContainer.java:310)
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:455)
2013-02-13 12:07:37 [INFO] [STDERR]  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2013-02-13 12:07:37 [INFO] [STDERR]  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at java.lang.reflect.Method.invoke(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)
2013-02-13 12:07:37 [INFO] [STDERR]  at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2013-02-13 12:07:37 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)
2013-02-13 12:07:37 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)
2013-02-13 12:07:37 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.post(EventBus.java:268)
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:140)
2013-02-13 12:07:37 [INFO] [STDERR]  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2013-02-13 12:07:37 [INFO] [STDERR]  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at java.lang.reflect.Method.invoke(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)
2013-02-13 12:07:37 [INFO] [STDERR]  at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2013-02-13 12:07:37 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)
2013-02-13 12:07:37 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)
2013-02-13 12:07:37 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.post(EventBus.java:268)
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:83)
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.common.Loader.loadMods(Loader.java:479)
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:161)
2013-02-13 12:07:37 [INFO] [STDERR]  at net.minecraft.client.Minecraft.a(Minecraft.java:410)
2013-02-13 12:07:37 [INFO] [STDERR]  at asq.a(SourceFile:56)
2013-02-13 12:07:37 [INFO] [STDERR]  at net.minecraft.client.Minecraft.run(Minecraft.java:744)
2013-02-13 12:07:37 [INFO] [STDERR]  at java.lang.Thread.run(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: CCPortable.common.TileEntityPDA
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:185)
2013-02-13 12:07:37 [INFO] [STDERR]  at java.lang.ClassLoader.loadClass(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at java.lang.ClassLoader.loadClass(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  ... 31 more
2013-02-13 12:07:37 [INFO] [STDERR] Caused by: java.lang.NoClassDefFoundError: dan200/computer/api/IPeripheral
2013-02-13 12:07:37 [INFO] [STDERR]  at java.lang.ClassLoader.defineClass1(Native Method)
2013-02-13 12:07:37 [INFO] [STDERR]  at java.lang.ClassLoader.defineClass(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at java.security.SecureClassLoader.defineClass(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:174)
2013-02-13 12:07:37 [INFO] [STDERR]  ... 33 more
2013-02-13 12:07:37 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: dan200.computer.api.IPeripheral
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:185)
2013-02-13 12:07:37 [INFO] [STDERR]  at java.lang.ClassLoader.loadClass(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at java.lang.ClassLoader.loadClass(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  ... 37 more
2013-02-13 12:07:37 [INFO] [STDERR] Caused by: java.lang.NullPointerException
2013-02-13 12:07:37 [INFO] [STDERR]  at org.objectweb.asm.ClassReader.<init>(Unknown Source)
2013-02-13 12:07:37 [INFO] [STDERR]  at net.minecraftforge.transformers.EventTransformer.transform(EventTransformer.java:29)
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:228)
2013-02-13 12:07:37 [INFO] [STDERR]  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:173)
2013-02-13 12:07:37 [INFO] [STDERR]  ... 39 more

Here is the code of the TileEntity:

package CCPortable.common;
import net.minecraft.block.Block;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;
import dan200.computer.api.IComputerAccess;
import dan200.computer.api.IPeripheral;
public class TileEntityPDA extends TileEntity implements IPeripheral {
public IComputerAccess computer;
public int id;
public int pda;
public int side = -1;
// public static World world;
@Override
public String getType() {
  return "PDA_receiver";
}
@Override
public String[] getMethodNames() {
  String[] methods = { "alert", "write", "setCursorPos" };
  return methods;
  // ME WANT TERM FUNCTIONS
}
@Override
public Object[] callMethod(IComputerAccess computer, int method,
   Object[] arg) throws Exception {
  EntityPlayer ply = (EntityPlayer) CCPortable.allPLYs.get(this.pda);
  ObjectPDA pda = (ObjectPDA) CCPortable.allPDAs.get(this.pda);
  switch (method) {
  case 0:
   if (arg.length == 2 && arg[0] instanceof Double && arg[1] instanceof Double)
	this.worldObj.addBlockEvent((int) ply.posX, (int) ply.posY,
	  (int) ply.posZ, Block.music.blockID, (Integer) arg[0],
	  (Integer) arg[1]);
   else
	throw new Exception("Invalid arguments to function");
  case 1:
   if (arg.length == 1 && arg[0] instanceof String) {
	pda.write((String) arg[0]);
	CCPortable.allPDAs.put(this.pda, pda);
   } else {
	throw new Exception("Invalid arguments to function");
   }
  case 2:
   if (arg.length == 2 && arg[0] instanceof Double && arg[1] instanceof Double) {
	pda.setCursorPos((Integer) arg[0], (Integer) arg[1]);
	CCPortable.allPDAs.put(this.pda, pda);
   } else {
	throw new Exception("Invalid arguments to function");
   }
  }
  return null;
}
@Override
public boolean canAttachToSide(int sidee) {
  if (this.side == -1) {
   this.side = sidee;
   return true;
  }
  return this.side == sidee;
}
@Override
public void attach(IComputerAccess acomputer) {
  /*this.computer = acomputer;
  this.computer.mountFixedDir("rom/apis/receiver",
	"mods/CCPortable/receiver.lua", true, 0);*/
}
@Override
public void detach(IComputerAccess computer) {
  /*this.computer.unmount("rom/apis/receiver");
  this.computer = null;
  this.side = -1;*/
}
public int getID() {
  return this.id;
}
public void setPDA(int id) {
  this.pda = id;
}
public void readFromNBT(NBTTagCompound nbt) {
  super.readFromNBT(nbt);
  this.id = nbt.getInteger("ID");
  this.pda = nbt.getInteger("PID");
}
public void writeToNBT(NBTTagCompound nbt) {
  super.writeToNBT(nbt);
  nbt.setInteger("ID", this.id);
  nbt.setInteger("PID", this.pda);
}
}

If you need to see the rest of the code, it is on my GitHub: https://github.com/T...ims/CCPortable/

Thanks for reading.

Thomasims

[Skullblade]

Just so you know... PDAs are officially planned in development...fyi

[immibis]

How are you trying to run it? In Eclipse?

[Cloudy]

You've packaged it wrong.

[Thomasims3]

Skullblade, on 14 February 2013 - 01:00 AM, said:

Just so you know... PDAs are officially planned in development...fyi

Yes.. I have a lot of new features planned to compete

immibis, on 14 February 2013 - 01:33 AM, said:

How are you trying to run it? In Eclipse?

I tried in Eclipse and out of Eclipse (MultiMC)

Cloudy, on 14 February 2013 - 01:38 AM, said:

You've packaged it wrong.

What do you mean? do I have to put the TileEntity in a special package?
It works if I don't implement IPeripheral

[Lyqyd]

Moved to Peripheral Help and Discussion.

[Orwell]

Let's say you put all the compiled files into CCPortable.zip, then make sure your tile entity file is at this exact path:
CCPortable.zip/CCPortable/common/TileEntityPDA.class

Chances are that you get this error because it can't find the class file at that path while doing reflection.

[Thomasims3]

Orwell, on 14 February 2013 - 05:03 AM, said:

Let's say you put all the compiled files into CCPortable.zip, then make sure your tile entity file is at this exact path:
CCPortable.zip/CCPortable/common/TileEntityPDA.class

Chances are that you get this error because it can't find the class file at that path while doing reflection.

Oh that. yes it's in the right folder, I think the problem comes from the peripheral implementation because I can get it to work if I remove "implements IPeripheral"at the top.
EDIT: by "I can get it to work" I mean that it doesn't crash the game

[Orwell]

Thomasims3, on 14 February 2013 - 05:48 AM, said:

Orwell, on 14 February 2013 - 05:03 AM, said:

Let's say you put all the compiled files into CCPortable.zip, then make sure your tile entity file is at this exact path:
CCPortable.zip/CCPortable/common/TileEntityPDA.class

Chances are that you get this error because it can't find the class file at that path while doing reflection.

Oh that. yes it's in the right folder, I think the problem comes from the peripheral implementation because I can get it to work if I remove "implements IPeripheral"at the top.
EDIT: by "I can get it to work" I mean that it doesn't crash the game

That probably has to do with the reflection. That still doesn't mean it's a fault in the implementation of IPeripheral, but rather that the reflection mechanism can't find your class where it should be. So in the end it's more likely that you made a mistake, wouldn't know which though. IPeripheral has always worked for me. Can you post a print screen of the contents of your zip file or something? Or just type out the structure? Up to TileEntityPDA.class at least.

[Thomasims3]

I've been chatting with a guy who tests the code on my github and he says that he doesn't have that problem. anyway, here is the structure:

CCPortable.zip
    -CCPortable
        -client
            -ClientProxy.class
            -GuiPDA.class
        -common
            -BlockReceiver.class
            -CCPortable.class
            -CommonProxy.class
            -ObjectPDA.class
            -ItemPDA.class
            -ItemPDAPart.class
            -TileEntityPDA.class
            -PacketHandler.class(not yet implemented)

If you want compiled code it's also on my GitHub.

[Cloudy]

Actually, you didn't package it wrong.


Caused by: java.lang.ClassNotFoundException: dan200.computer.api.IPeripheral

When your class is instanciated, IPeripheral doesn't exist - either because CC isn't installed, or because your mod is being loaded before. Ensure it loads after using the methods included in FML.

[Thomasims3]

Oh, I didn't even think about that, indeed the mod comes before computercraft in my mods folder.
Thanks for pointing that out Cloudy.
I'll try changing the order it loads the mods tomorow.

[Orwell]

I always add this to my @Mod annotation:

@Mod( modid = "xxx", name = "xxx", version = "x.x.x", dependencies = "required-after:ComputerCraft;after:CCTurtle")

[Thomasims3]

It's working thanks everyone for your help. Now I can continue on adding more features

Orwell, on 14 February 2013 - 02:21 PM, said:

I always add this to my @Mod annotation:

@Mod( modid = "xxx", name = "xxx", version = "x.x.x", dependencies = "required-after:ComputerCraft;after:CCTurtle")

I didn't know how to deal with the dependecies in @mod, thanks!