Search the Forums BEFORE making a new post.

Opening a GUI when a player spawns

Posted January 29, 201411 yr

I have this code, which is suppose to open a GUI if the player has -1 as a race.

package net.rpg.handler;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraftforge.event.entity.EntityJoinWorldEvent;
import net.rpg.RPG;
import net.rpg.helper.DataHelper;
import cpw.mods.fml.common.eventhandler.SubscribeEvent;

public class WorldEventHandler {
@SubscribeEvent
public void EntityJoinWorldEvent(EntityJoinWorldEvent event) {
	if(!event.world.isRemote && event.entity instanceof EntityPlayer) {
		EntityPlayer p = (EntityPlayer) event.entity;
		DataHelper.load(event.world);
		if(DataHelper.getRace(p.getDisplayName()) == -1) {
			p.openGui(RPG.instance, 1, p.worldObj, 0, 0, 0);
		}
	}
}
}

The problem is, it crashes. I'm guessing it crashes because maybe the player is unready to open GUIs?

Crashlog:

---- Minecraft Crash Report ----
// Ouch. That hurt 

Time: 1/28/14 11:10 PM
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:81)
at net.minecraft.network.NetworkManager.processReadPackets(NetworkManager.java:200)
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165)
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:762)
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:650)
at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:120)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:528)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:787)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:81)
at net.minecraft.network.NetworkManager.processReadPackets(NetworkManager.java:200)

-- Ticking connection --
Details:
Connection: net.minecraft.network.NetworkManager@60ad4fe0
Stacktrace:
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165)
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:762)
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:650)
at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:120)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:528)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:787)

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_17, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 863061448 bytes (823 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)
JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
AABB Pool Size: 401 (22456 bytes; 0 MB) allocated, 364 (20384 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.01-pre FML v7.2.109.1019 Minecraft Forge 10.12.0.1019 5 mods loaded, 5 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.2.109.1019} [Forge Mod Loader] (forgeSrc-1.7.2-10.12.0.1019.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.12.0.1019} [Minecraft Forge] (forgeSrc-1.7.2-10.12.0.1019.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
rpg{1.0} [RPG] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
poe{Build 1} [World of Poe] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 141 (7896 bytes; 0 MB) allocated, 104 (5824 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['Player686'/35, l='New World', x=191.50, y=71.00, z=246.50]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

Is there any other way to open a GUI when a player first joins?

Kain

Quote

January 29, 201411 yr

Are you sure the crash is caused by trying to open the gui and not by anything going on in your DataHelper class? Try putting println's between each of your lines and see which ones print before the game crashes; that will at least let you know if it truly is the gui that's causing the crash.

EntityPlayer p = (EntityPlayer) event.entity;
System.out.println("DataHelper pre-load");
DataHelper.load(event.world);
System.out.println("DataHelper post-load");
if(DataHelper.getRace(p.getDisplayName()) == -1) {
System.out.println("Opening race gui");
p.openGui(RPG.instance, 1, p.worldObj, 0, 0, 0);
}

Something like that.

If it is, you may want to use the player's position when opening the gui and see if that makes any difference:

p.openGui(RPG.instance, 1, p.worldObj, p.posX, p.posY, p.posZ);

http://i.imgur.com/NdrFdld.png[/img]

Quote

January 29, 201411 yr

Author

I added prints:

package net.rpg.handler;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraftforge.event.entity.EntityJoinWorldEvent;
import net.rpg.RPG;
import net.rpg.helper.DataHelper;
import cpw.mods.fml.common.eventhandler.SubscribeEvent;

public class WorldEventHandler {
@SubscribeEvent
public void EntityJoinWorldEvent(EntityJoinWorldEvent event) {
	if(!event.world.isRemote && event.entity instanceof EntityPlayer) {
		EntityPlayer p = (EntityPlayer) event.entity;
		DataHelper.load(event.world);
		System.out.println("1");
		if(DataHelper.getRace(p.getDisplayName()) == -1) {
			System.out.println("2");
			p.openGui(RPG.instance, 1, p.worldObj, (int) p.posX, (int) p.posY, (int) p.posZ);
			System.out.println("3");
		}
	}
}
}

It printed all of them. Also, the position has no effect at all.

Here's my GuiHandler:

package net.rpg.handler;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.world.World;
import net.rpg.container.ContainerRaceSelection;
import net.rpg.container.ContainerStats;
import net.rpg.gui.GuiRaceSelection;
import net.rpg.gui.GuiStats;
import cpw.mods.fml.common.network.IGuiHandler;

public class GuiHandler implements IGuiHandler {
@Override
public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
	switch(ID) {
	case (0):
		return new ContainerStats(player);
	case (1):
		return new ContainerRaceSelection(player);
	}
	return null;
}

@Override
public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
	switch(ID) {
	case (0):
		return new GuiStats(player);
	case (1):
		return new GuiRaceSelection(player);
	}
	return null;
}
}

Here's my container

package net.rpg.container;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.Container;

public class ContainerRaceSelection extends Container {
public ContainerRaceSelection(EntityPlayer p) {
}

@Override
public boolean canInteractWith(EntityPlayer p) {
	return true;
}
}

And here's my gui

package net.rpg.gui;

import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.ResourceLocation;
import net.rpg.container.ContainerRaceSelection;

import org.lwjgl.opengl.GL11;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public class GuiRaceSelection extends GuiContainer {
private static final ResourceLocation texture = new ResourceLocation("rpg:textures/gui/blank.png");
private EntityPlayer p;

public GuiRaceSelection(EntityPlayer p) {
	super(new ContainerRaceSelection(p));
	this.p = p;
}

@Override
protected void func_146979_b(int p_146979_1_, int p_146979_2_) {
	String s = "Race Selection";
	this.field_146289_q.drawString(s, this.field_146999_f / 2 - this.field_146289_q.getStringWidth(s) / 2, 6, 4210752);
	s = "~~~~~~~~~~~~~~~~~~~~~~~~";
	this.field_146289_q.drawString(s, this.field_146999_f / 2 - this.field_146289_q.getStringWidth(s) / 2, 17, 4210752);
}

@Override
protected void func_146976_a(float p_146976_1_, int p_146976_2_, int p_146976_3_) {
	GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
	this.field_146297_k.getTextureManager().bindTexture(texture);
	int k = (this.field_146294_l - this.field_146999_f) / 2;
	int l = (this.field_146295_m - this.field_147000_g) / 2;
	this.drawTexturedModalRect(k, l, 0, 0, this.field_146999_f, this.field_147000_g);
}
}

Kain

Quote

January 29, 201411 yr

What's the crash?

Don't PM me with questions. They will be ignored! Make a thread on the appropriate board for support.

1.12 -> 1.13 primer by williewillus.

1.7.10 and older versions of Minecraft are no longer supported due to it's age! Update to the latest version for support.

http://www.howoldisminecraft1710.today/

Quote

January 29, 201411 yr

Author

Crashlog:

---- Minecraft Crash Report ----
// Ouch. That hurt 

Time: 1/28/14 11:10 PM
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:81)
at net.minecraft.network.NetworkManager.processReadPackets(NetworkManager.java:200)
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165)
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:762)
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:650)
at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:120)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:528)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:787)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:81)
at net.minecraft.network.NetworkManager.processReadPackets(NetworkManager.java:200)

-- Ticking connection --
Details:
Connection: net.minecraft.network.NetworkManager@60ad4fe0
Stacktrace:
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165)
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:762)
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:650)
at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:120)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:528)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:787)

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_17, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 863061448 bytes (823 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)
JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
AABB Pool Size: 401 (22456 bytes; 0 MB) allocated, 364 (20384 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.01-pre FML v7.2.109.1019 Minecraft Forge 10.12.0.1019 5 mods loaded, 5 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.2.109.1019} [Forge Mod Loader] (forgeSrc-1.7.2-10.12.0.1019.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.12.0.1019} [Minecraft Forge] (forgeSrc-1.7.2-10.12.0.1019.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
rpg{1.0} [RPG] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
poe{Build 1} [World of Poe] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 141 (7896 bytes; 0 MB) allocated, 104 (5824 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['Player686'/35, l='New World', x=191.50, y=71.00, z=246.50]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

Kain

Quote

January 29, 201411 yr

Author

Ok, I've switched events. Now, the event is registered on the server and not the client.

@SubscribeEvent
public void EntitySpawnEvent(LivingSpawnEvent event) {
	if(event.entity instanceof EntityPlayer) {
		System.out.println("1");
		EntityPlayer player = (EntityPlayer) event.entity;
		if(!player.worldObj.isRemote) {
			System.out.println("2");
			if(DataHelper.getRace(player.getDisplayName()) == -1) {
				System.out.println("3");
				player.openGui(RPG.instance, 0, player.worldObj, (int) player.posX, (int) player.posY, (int) player.posZ);
			}
		}
	}
}

For some reason, it never detects the player. There was a print behind the first if statement but it was spamming the console.

Kain

Quote

January 30, 201411 yr

LivingSpawnEvent isn't posted for players.

Try the PlayerLoggedInEvent ?

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/15747-opening-a-gui-when-a-player-spawns/

Followers

Go to topic listing

IPS spam blocked by CleanTalk.

Announcements

Bad pathfinding for big mobs (1.21.1)

okay no pro
are you on discord so that we can talk on discord

By dark phonis · 8 hours ago8 hr
Processor failed, invalid outputs

Sorry for necro, but this is one of the first search results for this issue. Possible cause is Forge checking for zlib (the expected hash) and not accepting zlib-ng (the actual hash):

https://github.com/PrismLauncher/ForgeWrapper/issues/3

One possible workaround (aside from swapping zlib-ng for zlib which might cause other problems on your system) would be to use the prism flatpak.

By BingRazer · 10 hours ago10 hr
Processor failed, invalid outputs

Sorry for necro, but this is one of the first search results for this issue. Possible cause is Forge checking for zlib (the expected hash) and not accepting zlib-ng (the actual hash):

https://github.com/PrismLauncher/ForgeWrapper/issues/3

One possible workaround (aside from swapping zlib-ng for zlib which might cause other problems on your system) would be to use the prism flatpak.

By BingRazer · 10 hours ago10 hr
Orbital strike cannon fishing rod mod

Did u quit making this @FoxyWoxy ?

By Astoxy · 10 hours ago10 hr
Bad pathfinding for big mobs (1.21.1)

Well I was mainly trying to figure out whether or not I was doing something wrong and if it could be fixed by just adding something (e.g. maybe I was missing an Attribute or something like that), but if that's not the case then my only option is to use custom pathfinding. If someone has one that functions and is willing to share it, then I'd gladly use that instead of suffering through making my own.

By VictorEvers · Yesterday at 05:40 PM1 day

There are no registered users currently online

Sign In

Opening a GUI when a player spawns

Featured Replies

Join the conversation

Posts

Bad pathfinding for big mobs (1.21.1)

Processor failed, invalid outputs

Processor failed, invalid outputs

Orbital strike cannon fishing rod mod

Bad pathfinding for big mobs (1.21.1)

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)