[SOLVED] [1.8] event handler causing server crash ?

[Samalot]

EDIT 2: I SOLVED IT!!!  (changed the title of the post, so as not to mislead people. The original 'problem' was not the problem at all.. )

 

The problem was in my eventhandler, I had this:

 
        @SubscribeEvent
public void openGui(GuiOpenEvent event)
{	
		/*No GUI*/
		if(event.gui == null)
		{
			globalFlag_Token_Pouch_Open = 0;
		}
		/*Token Pouch opened*/
		else if(event.gui.toString().contains("lazarus.container.token_pouch.GuiTokenPouch"))
		{globalFlag_Token_Pouch_Open = 1;}		
}

 

I added @SideOnly(Side.CLIENT) and it works! (well, it doesn't crash..)

 

 
        @SubscribeEvent
@SideOnly(Side.CLIENT)
public void openGui(GuiOpenEvent event)
{	
		/*No GUI*/
		if(event.gui == null){globalFlag_Token_Pouch_Open = 0;}

		/*Token Pouch opened*/
		else if(event.gui.toString().contains("lazarus.container.token_pouch.GuiTokenPouch"))
		{globalFlag_Token_Pouch_Open = 1;}		
}

 

 

EDIT:

 

I have narrowed the problem down, it seems that it is my event handler that is causing the issue, NOT the proxies.

 

java.lang.NoClassDefFoundError: net/minecraft/client/gui/GuiScreen 

 

/*Imports*/
package lazarus.utils.handlers;
import lazarus.main.LazarusItems;
import lazarus.utils.whispers.AmsollionWhispers;
import lazarus.utils.whispers.ImbrasWhispers;
import lazarus.utils.whispers.OsmodeusWhispers;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.IChatComponent;
import net.minecraftforge.client.event.GuiOpenEvent;
import net.minecraftforge.event.entity.living.LivingHurtEvent;
import net.minecraftforge.event.entity.player.EntityItemPickupEvent;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;

/*Main*/
public class LazarusEventHandler {
/*---------------------------------------- Global variables ----------------------------------------*/
public static int globalFlag_Token_Pouch_Open = 0;

/*---------------------------------------- Listen for guiOpens ----------------------------------------*/
@SubscribeEvent
public void openGui(GuiOpenEvent event)
{	
		/*No GUI*/
		if(event.gui == null)
		{
			globalFlag_Token_Pouch_Open = 0;
		}
		/*Token Pouch opened*/
		else if(event.gui.toString().contains("lazarus.container.token_pouch.GuiTokenPouch"))
		{globalFlag_Token_Pouch_Open = 1;}		
}

/*---------------------------------------- Listen for item pickup ----------------------------------------*/
@SubscribeEvent
public void onItemPickup(EntityItemPickupEvent event){
	/*Amsollions Token*/
	String whisperTextTemp = "";
	boolean trigger = false;

	if(event.item.getDisplayName().toString().contains("item.item.gilded_token")){whisperTextTemp = AmsollionWhispers.randomWhsiper();trigger = true;}
	if(event.item.getDisplayName().toString().contains("item.item.waning_token")){whisperTextTemp = OsmodeusWhispers.randomWhsiper();trigger = true;}
	if(event.item.getDisplayName().toString().contains("item.item.amplifying_token")){whisperTextTemp = ImbrasWhispers.randomWhsiper();trigger = true;}

	if(trigger)
	{
		String whisperText = "";
		String[] whisperTextSplit = whisperTextTemp.split(" ");
		for(String element : whisperTextSplit){whisperText += "§8§o";whisperText += element;whisperText+=" ";}
		IChatComponent whisper = new ChatComponentText(whisperText);
		SoundHandler.lazarusPlaySound("mob.wither.idle", 0.1F, 0.1F);
		event.entityPlayer.addChatMessage(whisper);
	}	
}

/*---------------------------------------- Listen entity taking damage ----------------------------------------*/
@SubscribeEvent
public void onEntityGetHurt(LivingHurtEvent event)
{
	if(event.entity instanceof EntityPlayer)
	{
		/*Multiplied damgage taken by the player*/
		EntityPlayer player = (EntityPlayer) event.entityLiving;
		if(player.inventory.hasItem(LazarusItems.amplifying_token)){event.ammount *= 100;}
	}
	else if(event.source.getEntity() instanceof EntityPlayer)
	{
		/*Multiplied damgage dealt by the player*/
		EntityPlayer player = (EntityPlayer) event.source.getEntity();
		if(player.inventory.hasItem(LazarusItems.amplifying_token)){event.ammount *= 100;}
	}	
}	
}

 

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

Original message:

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

 

Hello, I am making a mod that adds an item with an inventory.  I struggled for a while, and still do not completely know what all the code does, however I was able to (following tutorials) make an item that does work in singleplayer!

 

...However, running a server instance crashes.

 

java.lang.NoClassDefFoundError: net/minecraft/client/gui/GuiScreen

 

After doing some digging, I was able to find that despite what the tutorial showed me, I should not be trying to access getClientGuiElement from my CommonProxy

 

I can understand, to some extent, why my code is crashing... but I have zero idea how I can fix it:

• My common proxy extends IGuiHandler
  
• When I try to remove getClientGuiElement from the code, it throws an error
  
• As far as I can tell, I have to include getClientGuiElement in my Common proxy or it does not compile, however this is what causes my multiplayer server to crash?
  

 

Here is my code:

(GitHub link to full project - https://github.com/Samalot/Lazarus)

 

item class relevant code: (not relevant, but if someone could explain to me why it is important to check if the player is not sneaking, I would be very thankful!)

/*---------------------------------------- On right click ----------------------------------------*/
public ItemStack onItemRightClick(ItemStack par1ItemStack, World par2World, EntityPlayer player)
{	
	if (!par2World.isRemote) 
	{
		if (!player.isSneaking()) 
		{
			player.openGui(LazarusMain.instance, LazarusMain.GUI_ITEM_INV, player.worldObj, 0, 0, 0);
			System.out.println(par1ItemStack.getTagCompound());

		} 
		else {new InventoryTokenPouch(player.getHeldItem());}
	}
	return par1ItemStack;
}

 

Common Proxy:

/*Main*/
public class CommonProxy implements IGuiHandler{
	/*Register the renders*/
	public void registerRenders(){}

	@Override
	public Object getServerGuiElement(int guiId, EntityPlayer player, World world, int x, int y, int z) {
		if (guiId == LazarusMain.GUI_ITEM_INV)  {
			return new ContainerTokenPouch(player, player.inventory, new InventoryTokenPouch(player.getHeldItem()));
		} else {
			return null;
		}
	}

	@Override
	public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
		return null;
	}

 

Client Proxy

/*Main*/
public class ClientProxy extends CommonProxy{
/*Register the renders*/
@Override
public void registerRenders(){
	LazarusItems.registerRenders();
}

@Override
public Object getClientGuiElement(int guiId, EntityPlayer player, World world, int x, int y, int z) {
	if (guiId == LazarusMain.GUI_ITEM_INV)  {
		return new GuiTokenPouch(player, player.inventory, new InventoryTokenPouch(player.getHeldItem()));
	} else {
		return null;
	}
}	

}

 

Any help on this matter would be hugely appreciated!