[Run some code in background]

10 hours ago, diesieben07 said:

This is definitely not a "just do X" question. Multithreading is a difficult topic, especially in Minecraft, since most of the game's code is not threadsafe.

 

• Yes, you need some kind of thread, but you almost never want to use the raw thread API. Use an Executor resp. ExecutorService.
• URLConnection is terrible. Use the Apache HttpClient that is included with Minecraft already.

Thank, I will try this.

[Run some code in background]

Hello,

In my mod, I use the Java URLConnection to connect to a website and get some stats. I connect to the website with a TickEvent.ClientTickEvent event, but it takes like 2-3 sec so the game freeze during this time.  Is this possible to run this code in a background thread or something that will not freeze the game ?

[[SOLVED] getUnformattedComponentText() throws error]

Problem solved, I now use this to get the player name :

name = networkPlayerInfoIn.getGameProfile().getName();

 

[[SOLVED] getUnformattedComponentText() throws error]

Hello,

I want to get the raw name of a player rendered in the player list, but when I use getUnformattedComponentText(), the game crash.

Here is my code :

package com.example.examplemod;

import java.util.List;

import javax.annotation.Nullable;

import com.mojang.authlib.GameProfile;

import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.Gui;
import net.minecraft.client.gui.GuiIngame;
import net.minecraft.client.gui.GuiPlayerTabOverlay;
import net.minecraft.client.network.NetHandlerPlayClient;
import net.minecraft.client.network.NetworkPlayerInfo;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EnumPlayerModelParts;
import net.minecraft.scoreboard.IScoreCriteria;
import net.minecraft.scoreboard.ScoreObjective;
import net.minecraft.scoreboard.ScorePlayerTeam;
import net.minecraft.scoreboard.Scoreboard;
import net.minecraft.util.text.TextComponentString;
import net.minecraft.util.text.TextFormatting;
import net.minecraft.world.GameType;
import net.minecraftforge.fml.relauncher.ReflectionHelper;

public class TabOverlay extends GuiPlayerTabOverlay {

	String playerName = "";
	String name = "";
	
	public TabOverlay(Minecraft mcIn, GuiIngame guiIngameIn) {
		super(mcIn, guiIngameIn);
	}
	
	ReflectionHelper ref;
	GuiPlayerTabOverlay gui;
	
	 /**
     * Returns the name that should be renderd for the player supplied
     */
	@Override
    public String getPlayerName(NetworkPlayerInfo networkPlayerInfoIn)
    {	
		
		playerName = networkPlayerInfoIn.getDisplayName() != null ? networkPlayerInfoIn.getDisplayName().getFormattedText() : ScorePlayerTeam.formatPlayerName(networkPlayerInfoIn.getPlayerTeam(), networkPlayerInfoIn.getGameProfile().getName());
		
		name = networkPlayerInfoIn.getDisplayName().getUnformattedComponentText(); // this is the line 48
		
		//Rest of code
		
    }
}

 

And here is the error in the log :

java.lang.NullPointerException: null
	at com.example.examplemod.TabOverlay.func_175243_a(TabOverlay.java:48) ~[TabOverlay.class:?]
	at net.minecraft.client.gui.GuiPlayerTabOverlay.func_175249_a(SourceFile:74) ~[bjq.class:?]
	at net.minecraftforge.client.GuiIngameForge.renderPlayerList(GuiIngameForge.java:837) ~[GuiIngameForge.class:?]
	at net.minecraftforge.client.GuiIngameForge.func_175180_a(GuiIngameForge.java:200) ~[GuiIngameForge.class:?]
	at net.minecraft.client.renderer.EntityRenderer.func_181560_a(EntityRenderer.java:1098) ~[buq.class:?]
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1117) ~[bib.class:?]
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:397) [bib.class:?]
	at net.minecraft.client.main.Main.main(SourceFile:123) [Main.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25]
	at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]

 

I don't understand why there is this error. Does someone know ?

 

[[1.12] Modify the 'player list']

So I used the ReflectionHelper class, so this is my new EventHandler class :

@SubscribeEvent
	public void onTickEvent(TickEvent.ClientTickEvent e) {
    	
    	if(e.phase == Phase.START) {
    		
    		TabOverlay tab = new TabOverlay(Minecraft.getMinecraft(), Minecraft.getMinecraft().ingameGUI);
    		
    		try {
				
    			ReflectionHelper ref = new ReflectionHelper();
    			
    			ref.setPrivateValue(GuiIngame.class, Minecraft.getMinecraft().ingameGUI, tab, "field_175196_v");
				
				
			} catch (SecurityException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			} catch (IllegalArgumentException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
    	}	
    }

 

But it throws a NoSuchFieldException, this is the crash report :

 

net.minecraftforge.fml.relauncher.ReflectionHelper$UnableToAccessFieldException: net.minecraftforge.fml.relauncher.ReflectionHelper$UnableToFindFieldException: java.lang.NoSuchFieldException: field_175196_v
	at net.minecraftforge.fml.relauncher.ReflectionHelper.setPrivateValue(ReflectionHelper.java:170)
	at com.example.examplemod.Event.onTickEvent(Event.java:32)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_9_Event_onTickEvent_ClientTickEvent.invoke(.dynamic)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179)
	at net.minecraftforge.fml.common.FMLCommonHandler.onPreClientTick(FMLCommonHandler.java:342)
	at net.minecraft.client.Minecraft.runTick(Minecraft.java:1815)
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1171)
	at net.minecraft.client.Minecraft.run(Minecraft.java:436)
	at net.minecraft.client.main.Main.main(Main.java:118)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
	at GradleStart.main(GradleStart.java:26)
Caused by: net.minecraftforge.fml.relauncher.ReflectionHelper$UnableToFindFieldException: java.lang.NoSuchFieldException: field_175196_v
	at net.minecraftforge.fml.relauncher.ReflectionHelper.findField(ReflectionHelper.java:117)
	at net.minecraftforge.fml.relauncher.ReflectionHelper.setPrivateValue(ReflectionHelper.java:166)
	... 21 more
Caused by: java.lang.NoSuchFieldException: field_175196_v
	at java.lang.Class.getDeclaredField(Unknown Source)
	at net.minecraftforge.fml.relauncher.ReflectionHelper.findField(ReflectionHelper.java:108)
	... 22 more

Do you know what is the issue ?

[[1.12] Modify the 'player list']

So I tried to do this, but it does not work. I think there are errors in my code.

 

This is my TabOverlay class :

 

public class TabOverlay extends GuiPlayerTabOverlay {

	public TabOverlay(Minecraft mcIn, GuiIngame guiIngameIn) {
		super(mcIn, guiIngameIn);
	}
	
	GuiPlayerTabOverlay gui;
	
	 /**
     * Returns the name that should be renderd for the player supplied
     */
	@Override
    public String getPlayerName(NetworkPlayerInfo networkPlayerInfoIn)
    {	
		return gui.getPlayerName(networkPlayerInfoIn) + "a";
    }
}

 

And this is my EventHandler class where I handle the TickEvent :

 

@SubscribeEvent
public void onTickEvent(TickEvent.ClientTickEvent e) {
    	
    if(e.phase == Phase.START) {
    		
    	TabOverlay tab = new TabOverlay(Minecraft.getMinecraft(), Minecraft.getMinecraft().ingameGUI);
    		
    	try {
				
    		Field overlay = GuiIngame.class.getDeclaredField("overlayPlayerList");
			overlay.setAccessible(true);
			overlay.set(Minecraft.getMinecraft().ingameGUI, tab);
				
				
		} catch (NoSuchFieldException | SecurityException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (IllegalArgumentException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (IllegalAccessException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
    }	
}

 

There is a layout problem with the code integration, but I don't know why.

I rarely use reflection so maybe I don't use it correctly or maybe this is the TabOverlay class that is false.

Can you help me ?

[[1.12] Modify the 'player list']

Thank for your really complete answer,

I'm not a native english speaker so I have some difficulties to understand the step.

What i have understand is that :

 

- I must create a class that extends GuiPlayerTabOverlay and override the getPlayerName method so I can modify what it return

- Then I should get an instance of the GuiIngame

 

But after, I can't grab the overlayPlayerList beacause it's protected, so I don't understand how to do this. Can you explain ?

I'm sorry if it's simple and I just have a lack of vocabulary to understand what you said.

[[1.12] Modify the 'player list']

Does someone have an idea ? 

[[1.12] Modify the 'player list']

Thank for your answer.

When I meant level, I didn't mean xp level, I mean a server minigame level, that I get from a statistics website.

When you say "draw", are you talking about the draw fonction in OpenGL ?

And another question, I need to draw the level of the player after his name in the player liste, so how do I get the actual content of the player list to know where to draw the level of the player ?

[[1.12] Modify the 'player list']

Hello,

I'm making a client-sided mod where I need to write some infos about a player in the player list, like the level of the player ect.

But I don't know how to modify the content of the player list. I looked in the RenderGameOverlayEvent class and thought about reflection but I don't know what I should get and modify in this class. Can someone help me ?