Search the Forums BEFORE making a new post.

1.9 Server Mod

Posted June 12, 20169 yr

I have made a fully working mod for the client side, however I want the mod to work on the server. Everything works on the server side if I just use the same .jar mod files except for my custom commands, and also my WorldSavedData. The errors I am getting are supposedly from using a client side mod on a server but I can't find anywhere what to do to make it work? I can post a GitLab link to the project if you want but I'd rather send the log or PM you the link! Does anybody know a good tutorial for how to make my mod work on a server? I just have no clue what stuff needs to be done to make it work on a server!

ServerLog:

[15:56:36] [server thread/FATAL] [net.minecraft.server.MinecraftServer]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft
at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_91]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_91]
at net.minecraft.util.Util.func_181617_a(SourceFile:46) [g.class:?]
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:664) [MinecraftServer.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:386) [la.class:?]
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:609) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467) [MinecraftServer.class:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_91]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft
at com.mrplantpots.spn.init.SPNWorldSavedData.displayResults(SPNWorldSavedData.java:80) ~[sPNWorldSavedData.class:?]
at com.mrplantpots.spn.init.SupernaturalItemsEvents.func_77659_a(SupernaturalItemsEvents.java:30) ~[supernaturalItemsEvents.class:?]
at net.minecraft.item.ItemStack.func_77957_a(ItemStack.java:159) ~[adq.class:?]
at net.minecraft.server.management.PlayerInteractionManager.func_187250_a(PlayerInteractionManager.java:361) ~[ls.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147346_a(NetHandlerPlayServer.java:712) ~[mb.class:?]
at net.minecraft.network.play.client.CPacketPlayerBlockPlacement.func_148833_a(SourceFile:32) ~[jh.class:?]
at net.minecraft.network.play.client.CPacketPlayerBlockPlacement.func_148833_a(SourceFile:9) ~[jh.class:?]
at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[fh$1.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_91]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_91]
at net.minecraft.util.Util.func_181617_a(SourceFile:45) ~[g.class:?]
... 5 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.Minecraft
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_91]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_91]
at com.mrplantpots.spn.init.SPNWorldSavedData.displayResults(SPNWorldSavedData.java:80) ~[sPNWorldSavedData.class:?]
at com.mrplantpots.spn.init.SupernaturalItemsEvents.func_77659_a(SupernaturalItemsEvents.java:30) ~[supernaturalItemsEvents.class:?]
at net.minecraft.item.ItemStack.func_77957_a(ItemStack.java:159) ~[adq.class:?]
at net.minecraft.server.management.PlayerInteractionManager.func_187250_a(PlayerInteractionManager.java:361) ~[ls.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147346_a(NetHandlerPlayServer.java:712) ~[mb.class:?]
at net.minecraft.network.play.client.CPacketPlayerBlockPlacement.func_148833_a(SourceFile:32) ~[jh.class:?]
at net.minecraft.network.play.client.CPacketPlayerBlockPlacement.func_148833_a(SourceFile:9) ~[jh.class:?]
at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[fh$1.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_91]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_91]
at net.minecraft.util.Util.func_181617_a(SourceFile:45) ~[g.class:?]
... 5 more
Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@7ac0e420 from coremod FMLCorePlugin
at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:234) ~[forge-1.9-12.16.1.1887-universal.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_91]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_91]
at com.mrplantpots.spn.init.SPNWorldSavedData.displayResults(SPNWorldSavedData.java:80) ~[sPNWorldSavedData.class:?]
at com.mrplantpots.spn.init.SupernaturalItemsEvents.func_77659_a(SupernaturalItemsEvents.java:30) ~[supernaturalItemsEvents.class:?]
at net.minecraft.item.ItemStack.func_77957_a(ItemStack.java:159) ~[adq.class:?]
at net.minecraft.server.management.PlayerInteractionManager.func_187250_a(PlayerInteractionManager.java:361) ~[ls.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147346_a(NetHandlerPlayServer.java:712) ~[mb.class:?]
at net.minecraft.network.play.client.CPacketPlayerBlockPlacement.func_148833_a(SourceFile:32) ~[jh.class:?]
at net.minecraft.network.play.client.CPacketPlayerBlockPlacement.func_148833_a(SourceFile:9) ~[jh.class:?]
at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[fh$1.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_91]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_91]
at net.minecraft.util.Util.func_181617_a(SourceFile:45) ~[g.class:?]
... 5 more
Caused by: java.lang.RuntimeException: Attempted to load class bcf for invalid side SERVER
at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:49) ~[forge-1.9-12.16.1.1887-universal.jar:?]
at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:230) ~[forge-1.9-12.16.1.1887-universal.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_91]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_91]
at com.mrplantpots.spn.init.SPNWorldSavedData.displayResults(SPNWorldSavedData.java:80) ~[sPNWorldSavedData.class:?]
at com.mrplantpots.spn.init.SupernaturalItemsEvents.func_77659_a(SupernaturalItemsEvents.java:30) ~[supernaturalItemsEvents.class:?]
at net.minecraft.item.ItemStack.func_77957_a(ItemStack.java:159) ~[adq.class:?]
at net.minecraft.server.management.PlayerInteractionManager.func_187250_a(PlayerInteractionManager.java:361) ~[ls.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147346_a(NetHandlerPlayServer.java:712) ~[mb.class:?]
at net.minecraft.network.play.client.CPacketPlayerBlockPlacement.func_148833_a(SourceFile:32) ~[jh.class:?]
at net.minecraft.network.play.client.CPacketPlayerBlockPlacement.func_148833_a(SourceFile:9) ~[jh.class:?]
at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[fh$1.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_91]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_91]
at net.minecraft.util.Util.func_181617_a(SourceFile:45) ~[g.class:?]
... 5 more

Quote

June 12, 20169 yr

Author

Can I make it not a client only class?

Quote

June 12, 20169 yr

Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft
at com.mrplantpots.spn.init.SPNWorldSavedData.displayResults(SPNWorldSavedData.java:80) ~[sPNWorldSavedData.class:?]

at com.mrplantpots.spn.init.SupernaturalItemsEvents.func_77659_a(SupernaturalItemsEvents.java:30) ~[supernaturalItemsEvents.class:?]

Line 80 of

SPNWorldSavedData

is either using the

Minecraft

class (which is client-only) itself or trying to call something that uses it. If you want more help, post your code.

Without seeing your code, all we can do is give you general advice like reading up on sides here.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

Quote

June 12, 20169 yr

Author

SPNWorldSavedData:

package com.mrplantpots.spn.init;

import java.util.ArrayList;

import net.minecraft.client.Minecraft;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.world.World;
import net.minecraft.world.WorldSavedData;
import net.minecraft.world.storage.MapStorage;

import com.mrplantpots.spn.Reference;

public class SPNWorldSavedData extends WorldSavedData {
  private static final String DATA_NAME = "QUESTBOOK";

  public static ArrayList<Quest> questBook;
  
  public static String[] questName = {"First Quest", "Second Quest", "Last Quest"};
  public static String[] questDescription = {"Complete all objective to complete the quest.", "Try your hardest.", "You can do it!"};
  
  public static String[] objName = {"Kill Herobrine", "Jump", "FLY", "FINAL"};
  public static String[] objDescription = {"You have to slay Herobrine.", "You have to jump off a wall 3 blocks high.", "Fly higher than ever before.", "Kill yourself."};
  public static Integer[] objQID = {0, 0, 1, 2};
  
  
  private static NBTTagCompound data = new NBTTagCompound();
  
  // Required constructors
  public SPNWorldSavedData() {
    super(DATA_NAME);
  }
  public SPNWorldSavedData(String s) {
    super(s);
  }

    @Override
    public void readFromNBT(NBTTagCompound compound) {
   	 data = compound.getCompoundTag(DATA_NAME);
    }

    @Override
    public void writeToNBT(NBTTagCompound compound) {
        compound.setTag(DATA_NAME, data);
    }

public static SPNWorldSavedData get(World world) {
	  // The IS_GLOBAL constant is there for clarity, and should be simplified into the right branch.
	  MapStorage storage = world.getMapStorage();
	  SPNWorldSavedData instance = (SPNWorldSavedData) storage.loadData(SPNWorldSavedData.class, DATA_NAME);

	  if (instance == null) {
		System.out.println("NULL");
	    instance = new SPNWorldSavedData();
	    storage.setData(DATA_NAME, instance);
	    instance.getData().setInteger("qNum", questName.length);
	    for(int i=0;i<questName.length;i++) {
	    	instance.getData().setString("q"+i+"name", questName[i]);
	    	instance.getData().setString("q"+i+"description", questDescription[i]);
	    	instance.getData().setBoolean("q"+i+"state", false);
	    }
	    instance.getData().setInteger("objNum", objName.length);
	    for(int i=0;i<objName.length;i++){
	    	instance.getData().setString("obj"+i+"name", objName[i]);
	    	instance.getData().setString("obj"+i+"description", objDescription[i]);
	    	instance.getData().setBoolean("obj"+i+"state", false);
	    	instance.getData().setInteger("obj"+i+"QID", objQID[i]);
	    }
	    instance.markDirty();
	  } else{
		  System.out.println("NOT NULL");
	  }
	  return instance;
	}

public static NBTTagCompound getData() {
	return data;
}

public void displayResults() {
	gatherData();
	Minecraft.getMinecraft().thePlayer.sendChatMessage("PROCESS");
	for(int i=0;i<questBook.size();i++) {
		Quest q = questBook.get(i);
		Minecraft.getMinecraft().thePlayer.sendChatMessage("-QUEST: "+q.get_name()+" | "+q.get_description()+" | Completed = "+q.get_state());
		for(int x=0;x<questBook.get(i).get_objectiveArray().size();x++){
			Objective obj = questBook.get(i).get_objectiveArray().get(x);
			System.out.println(obj.get_state());
			Minecraft.getMinecraft().thePlayer.sendChatMessage("--Objective: "+obj.get_name()+" | "+obj.get_name()+" | Completed = "+obj.get_state());;
		}
		if(!q.get_state()) {
			int x=0;
			for(int j=0; j<q._objectiveArray.size(); j++){
				if(q._objectiveArray.get(j).get_state()){
					x+=1;
				}
			}
			System.out.println("X: "+x+" | Size: "+q._objectiveArray.size());
			if(x==q._objectiveArray.size()) {
				q.set_state(true);
				Minecraft.getMinecraft().thePlayer.sendChatMessage("COMPLETED QUEST: "+q._name);
				q.set_state(true);
	    		getData().setBoolean("q"+q.get_QID()+"state", true);
	    		markDirty();
			}
		}
	}
}

public void gatherData() {
	questBook = new ArrayList<Quest>();

	int questNum = data.getInteger("qNum");
	for(int i=0;i<questNum;i++) {
		questBook.add(new Quest(i, data.getString("q"+i+"name"), data.getString("q"+i+"description"), data.getBoolean("q"+i+"state"), new ArrayList<Objective>()));
	}
	int objNum = data.getInteger("objNum");
	for(int i=0;i<objNum;i++) {
		questBook.get(data.getInteger("obj"+i+"QID")).addObjective(new Objective(questBook.get(data.getInteger("obj"+i+"QID")), data.getString("obj"+i+"name"), data.getString("obj"+i+"description"), data.getBoolean("obj"+i+"state")));
	}
}
}

Quote

June 12, 20169 yr

Author

Line 80 :

gatherData();

Quote

June 12, 20169 yr

NBT is only for storing data on disk, don't use it to store data at runtime. Your

WorldSavedData

should store the data as objects and only use NBT when reading from/writing to the save.

The data should be stored in a non-static field so each instance of the

WorldSavedData

has its own copy.

Your actual problem is that you're using the

Minecraft

class all over the place; it's a client-only class, it can only be used in client-only code.

displayResults

should take an

EntityPlayer

argument and send the messages to it.

SupernaturalItemsEvents#onItemRightClick

should pass its own

EntityPlayer

argument to

displayResults

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

Quote

June 12, 20169 yr

Line 80 :
gatherData();

Nope, that's line 79.

This is line 80:

Minecraft.getMinecraft().thePlayer.sendChatMessage("PROCESS");

That is not how you send chat messages.

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable. If you think this is the case, JUST REPORT ME. Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

DO NOT PM ME WITH PROBLEMS. No help will be given.

Quote

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.

Reply to this topic...

https://forums.minecraftforge.net/topic/39462-19-server-mod/

Followers

Go to topic listing

IPS spam blocked by CleanTalk.

Announcements

driver issue bug

Add the crash-report or latest.log (logs-folder) with sites like https://mclo.gs/ and paste the link to it here

By TileEntity · 8 hours ago8 hr
driver issue bug

okay so, for reference im using The Obsessed mod, (not sure if it helps, but might as well include it), and it shows the driver issue popup in the logs, so i go through the three solutions, but it still pops up and minecraft doesnt. can i have some help? thanks! :)

By elysian1billion · Posted 15 hours ago15 hr
Minecraft launcher crashes when i try to run Minecraft Forge 1.13 - 1.19.2

I tried to delete it but now it appeares the error -1 and it sais that The game crashed: rendering overlay Error: net.minecraftforge.fml.config.ConfigFileTypeHandler$ConfigLoadingException: Failed loading config file tacz-client.toml of type CLIENT for modid tacz

By LocoDelTren · 22 hours ago22 hr
Forge 1.20.1 OpenAL 40963 and 40961 in DynamicSoundFilters

I copied the mod from Fabric to Forge, but errors 40963 and 40961 appear, I still don’t know the reason, I tried it in a single world, it doesn’t reproduce, the reason for the error is unknown, sometimes it exists and sometimes it doesn’t. andre111/dynamicsoundfilters: GitHub repository
The ported code to Forge is no different from the original, so you can use the source code for testing. The same error occurred on the Fabric build, mods that were on both builds:
Sodium
Create
I only know that the error occurs along the following path: MixinSoundSystem call onPlay -> FilterManager call updateSoundInstance

By VertexPlay · Posted Yesterday at 02:19 PM1 day
My friend keeps getting disconnected from our Forge Server

It is, but that is mainly to set up configs per player, I think. I don't believe it is messing chest inventories. I can try to remove that one tho and see if it fixes anything.

By GaiBerd · Wednesday at 10:15 PM1 day

Sign In

1.9 Server Mod

Featured Replies

Join the conversation

Posts

driver issue bug

driver issue bug

Minecraft launcher crashes when i try to run Minecraft Forge 1.13 - 1.19.2

Forge 1.20.1 OpenAL 40963 and 40961 in DynamicSoundFilters

My friend keeps getting disconnected from our Forge Server

Who's Online (See full list)

Important Information

Account

Navigation

Search

Configure browser push notifications

Chrome (Android)

Chrome (Desktop)

Safari (iOS 16.4+)

Safari (macOS)

Edge (Android)

Edge (Desktop)

Firefox (Android)

Firefox (Desktop)