[Solved] Server crash java.lang.NoClassDefFoundError: GUIScreen

[zedblade]

Hello,

 

in my mod the Client side work fine, but Server side crash when try to open a gui, the error:

 

 

 

Description: Exception in server tick loop

java.lang.NoClassDefFoundError: mymod/myGui

  at mymod.myGuiHandler.getClientGuiElement(myGuiHandler.java:17)

  at mymod.my_item.a(my_item.java:189)

  at ur.a(SourceFile:98)

  at ir.a(ItemInWorldManager.java:348)

  at iv.a(NetServerHandler.java:555)

  at fk.a(SourceFile:58)

  at cg.b(TcpConnection.java:458)

  at iv.d(NetServerHandler.java:136)

  at iw.b(NetworkListenThread.java:57)

  at ht.b(SourceFile:30)

  at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:703)

  at ho.r(DedicatedServer.java:270)

  at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:599)

  at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)

  at fy.run(SourceFile:849)

Caused by: java.lang.ClassNotFoundException: mymod.myGui

  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:185)

  at java.lang.ClassLoader.loadClass(ClassLoader.java:423)

  at java.lang.ClassLoader.loadClass(ClassLoader.java:356)

  ... 15 more

Caused by: java.lang.NoClassDefFoundError: aul

  at java.lang.ClassLoader.defineClass1(Native Method)

  at java.lang.ClassLoader.defineClass(ClassLoader.java:791)

  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:174)

  ... 17 more

Caused by: java.lang.ClassNotFoundException: aul

  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:89)

  at java.lang.ClassLoader.loadClass(ClassLoader.java:423)

  at java.lang.ClassLoader.loadClass(ClassLoader.java:356)

 

 

 

 

Follow the line 189 in "my_item" file:

 

 

 

FMLCommonHandler.instance().showGuiScreen(new myGuiHandler().getClientGuiElement(1, par3EntityPlayer, par2World, (int)par3EntityPlayer.posX, (int)par3EntityPlayer.posY, (int)par3EntityPlayer.posZ));

 

 

 

 

 

And this is the code of "myGuiHandler" file:

 

 

 

package mymod;

 

import cpw.mods.fml.common.network.IGuiHandler;

import net.minecraft.entity.player.EntityPlayer;

import net.minecraft.world.World;

 

public class myGuiHandler implements IGuiHandler

{

  @Override

    public Object getServerGuiElement(int var1, EntityPlayer var2, World var3, int var4, int var5, int var6)

    {

        return null;

    }

  @Override

    public Object getClientGuiElement(int var1, EntityPlayer var2, World var3, int var4, int var5, int var6)

    {

        return var2.getCurrentEquippedItem() != null && var2.getCurrentEquippedItem().getItem() instanceof my_item ? new myGui(var2) : null;

    }

}

 

 

 

 

The "myGui" file is a normal GUIScreen class object.

 

 

Please i need HELP!!!

 

----------------

 

Solution (thanks to diesieben07):

 

just using EntityPlayer.opengui(mod obj, gui id, x,y,z) function

 

Thanks

[diesieben07]

GuiScreens only exist on the Client. You can only access a GuiScreen class in your Client proxy. So redirect the getClientGuiElement to your ClientProxy.

[zedblade]

how?

 

I open the GUI from my_item right_click event ...

[diesieben07]

You need to create a new method in your proxies. Put your code from getClientGuiElement in the Client version and call it from the getClientGuiElement. That will only load the GuiScreen classes on the client.

[zedblade]

Well,

 

I tried your method but still happen same error:

 

FMLCommonHandler.instance().showGuiScreen(new GuiHandler().getClientGuiElement(mymod.myGuiID1, par3EntityPlayer, par2World, (int)par3EntityPlayer.posX, (int)par3EntityPlayer.posY, (int)par3EntityPlayer.posZ));

 

Also I tried using FMLClientHandler:

 

FMLClientHandler.instance().showGuiScreen(new GuiHandler().getClientGuiElement(mymod.myGuiID1, par3EntityPlayer, par2World, (int)par3EntityPlayer.posX, (int)par3EntityPlayer.posY, (int)par3EntityPlayer.posZ));

 

Error: Exception in server tick loop

 

java.lang.NoClassDefFoundError: mymod/myGui1

at mymod.ClientProxy.openClientGui(ClientProxy.java:28)

 

 

This is the HandlerGui code:

 

 

 

package mymod;

 

import cpw.mods.fml.common.network.IGuiHandler;

import net.minecraft.entity.player.EntityPlayer;

import net.minecraft.world.World;

 

public class GuiHandler implements IGuiHandler

{

@Override

    public Object getServerGuiElement(int var1, EntityPlayer var2, World var3, int var4, int var5, int var6)

    {

        return null;

    }

@Override

    public Object getClientGuiElement(int var1, EntityPlayer var2, World var3, int var4, int var5, int var6)

    {

 

return new ClientProxy().openClientGui(var1, var2);

 

//        switch (var1)

//        {

//            case 0:

//            return new myGui1(var2);

//

//            case 1:

//            return new myGui2(var2);

//

//            case 2:

//            return new myGui3(var2);

//

//        }

//       

//        return null;

    }

}

 

 

 

ClientProxy code:

 

 

 

package mymod;

 

//import cpw.mods.fml.common.network.Player;

import net.minecraft.entity.player.EntityPlayer;

import net.minecraft.network.INetworkManager;

import net.minecraft.network.packet.Packet250CustomPayload;

import net.minecraftforge.client.MinecraftForgeClient;

 

public class ClientProxy extends CommonProxy

{

    public void registerRenderers()

    {

    ITEMS = "/gui/images.png";

        MinecraftForgeClient.preloadTexture(ITEMS);

    }

   

    public Object openClientGui(int var1, EntityPlayer var2)

    {

        switch (var1)

        {

            case 0:

            return new myGui1(var2);

 

            case 1:

            return new myGui2(var2);

 

            case 2:

            return new myGui3(var2);

 

        }

       

        return null;

    }

}

 

 

 

CommonProxy code:

 

 

 

package mymod;

 

import net.minecraft.entity.player.EntityPlayer;

 

public class CommonProxy

{

    public static String ITEMS = "/gui/images.png";

 

    public void registerRenderers() {}

   

    public Object openClientGui(int var1, EntityPlayer var2)

    {

        return null;

    }

}

 

 

[diesieben07]

Do NOT use FMLCommonHandler.instance().showGuiScreen. It is an internal method that should NOT be used by a mod. Use EntityPlayer.openGui.

Do NOT instantiate your Proxies yourself. FML will do it for you.

[zedblade]

Sure, I also tried that.

 

But occurs another error:

 

"A mod tried to open a gui on the server without being a NetworkMod"

 

And this wont work.

 

Into main mod class file it's declared this:

 

@NetworkMod(

clientSideRequired = true,

serverSideRequired = false,

channels = {"MyMod"},

packetHandler = ServerPacketHandler.class

)

 

Into my_item right_click event there was:

 

par3EntityPlayer.openGui(mymod.instance, mymod.myGuiID, par2World, (int)par3EntityPlayer.posX, (int)par3EntityPlayer.posY, (int)par3EntityPlayer.posZ);

 

Please anyone can show me a working example of gui open on the server side???

 

 

 

[diesieben07]

Please show us your complete Main mod file.

[zedblade]

this is my main mod class:

 

 

 

package MyMod;

 

import net.minecraft.block.Block;

import net.minecraft.item.ItemStack;

import net.minecraft.item.Item;

 

import net.minecraftforge.common.Configuration;

import net.minecraftforge.common.EnumHelper;

import net.minecraftforge.common.Property;

 

import cpw.mods.fml.common.Mod;

import cpw.mods.fml.common.Mod.Init;

import cpw.mods.fml.common.Mod.Instance;

import cpw.mods.fml.common.Mod.PreInit;

import cpw.mods.fml.common.SidedProxy;

import cpw.mods.fml.common.event.FMLInitializationEvent;

import cpw.mods.fml.common.event.FMLPreInitializationEvent;

import cpw.mods.fml.common.network.NetworkMod;

import cpw.mods.fml.common.network.NetworkMod.SidedPacketHandler;

import cpw.mods.fml.common.network.NetworkRegistry;

import cpw.mods.fml.common.registry.GameRegistry;

import cpw.mods.fml.common.registry.LanguageRegistry;

 

@Mod(modid = "MyMod", name = "MyMod", version = "xxx")

 

@NetworkMod(

clientSideRequired = true,

serverSideRequired = false,

channels = {"MyMod"},

packetHandler = ServerPacketHandler.class

)

 

public class MyMod

{

    @Instance("MyMod")

    public static MyMod instance;

    public static GuiHandler guiHandler = new GuiHandler();

   

    @SidedProxy(

            clientSide = "MyMod.ClientProxy",

            serverSide = "MyMod.CommonProxy"

    )

   

    public static CommonProxy proxy;

   

    public static int myGuiID1 = 0;

    public static int myGuiID2 = 1;

    public static int myGuiID3 = 2;

 

    @PreInit

    public void preInit(FMLPreInitializationEvent var1)

    {

        //My config file

    }

 

    @Init

    public void load(FMLInitializationEvent event)

    {

        proxy.registerRenderers();

       

        //Registering GuiHandler

        NetworkRegistry.instance().registerGuiHandler(this, new GuiHandler());

       

        //declaring object

 

        //Registering Block

       

        //Adding ItemName

       

        // RECIPIES

 

    }

}

 

 

 

GuiHandler class:

 

 

package mymod;

 

import cpw.mods.fml.common.network.IGuiHandler;

import net.minecraft.entity.player.EntityPlayer;

import net.minecraft.world.World;

 

public class GuiHandler implements IGuiHandler

{

@Override

    public Object getServerGuiElement(int var1, EntityPlayer var2, World var3, int var4, int var5, int var6)

    {

        return null;

    }

@Override

    public Object getClientGuiElement(int var1, EntityPlayer var2, World var3, int var4, int var5, int var6)

    {

        switch (var1)

        {

            case 0:

            return new myGui1(var2);

 

            case 1:

            return new myGui2(var2);

 

            case 2:

            return new myGui3(var2);

 

        }

       

        return null;

    }

}

 

 

 

Line into my_item right_click event:

 

 

par3EntityPlayer.openGui(mymod.instance, mymod.myGuiID1, par2World, (int)par3EntityPlayer.posX, (int)par3EntityPlayer.posY, (int)par3EntityPlayer.posZ);

 

or

 

par3EntityPlayer.openGui(mymod.instance, mymod.myGuiID1, par2World, 0, 0, 0);

 

 

[diesieben07]

You are obviously modifying the class files you post (If not you should defiantly think about renaming stuff ). The @Instance field is probably not being populated because you may have spelled the Mod-ID wrong in it. (But we can't tell since you modify the classes you post). Try removing the argument from @Instance or fix the mod id parameter.

[zedblade]

You are AWESOME!!!

 

my ModID into @instance("MyMod") was wrong!!!

 

Now the Gui is open but can't play the sound in it:

 

varWorld.playSoundEffect(var10 + 0.5D, var11 + 1.0D, var12 + 0.5D, "mob.blaze.death", 1.0F, 1.0F);

 

won't play...

 

Also the line into the Gui don't work anymore:

 

varWorld.setBlockWithNotify(X, Y, Z, mymod.myblockID);

 

 

Seems a server notify issue ...

 

[diesieben07]

don't do stuff on the client (GuiScreens are client side only). Change blocks or play sounds only on the server (usually).

[opssemnik]

u need to send a packet to the server to tell to him, to send another packet witch is the play sound.