[SOLVED] GUI crash

Bedrock_Miner · November 29, 2014

Heyho Guys!

I created a Item which has a gui, but when I click it to open the gui, close it and click again, I get this crash report:

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[12:16:18] [server thread/ERROR]: Encountered an unexpected exception
net.minecraft.util.ReportedException: Ticking memory connection
at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:198) ~[NetworkSystem.class:?]
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:726) ~[MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:614) ~[MinecraftServer.class:?]
at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:118) ~[integratedServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:485) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752) [MinecraftServer$2.class:?]
Caused by: java.lang.NullPointerException
at net.minecraft.network.NetHandlerPlayServer.processPlayerBlockPlacement(NetHandlerPlayServer.java:657) ~[NetHandlerPlayServer.class:?]
at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.processPacket(C08PacketPlayerBlockPlacement.java:74) ~[C08PacketPlayerBlockPlacement.class:?]
at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.processPacket(C08PacketPlayerBlockPlacement.java:122) ~[C08PacketPlayerBlockPlacement.class:?]
at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:241) ~[NetworkManager.class:?]
at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:182) ~[NetworkSystem.class:?]
... 5 more
[12:16:18] [server thread/ERROR]: This crash report has been saved to: C:\Users\Julian\git\Magicum\Magicum\.\crash-reports\crash-2014-11-29_12.16.18-server.txt
[12:16:18] [server thread/INFO]: Stopping server
[12:16:18] [server thread/INFO]: Saving players
[12:16:18] [Client thread/INFO] [sTDOUT]: [net.minecraft.client.Minecraft:displayCrashReport:388]: ---- Minecraft Crash Report ----
// Oops.

Time: 29.11.14 12:16
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
at net.minecraft.network.NetHandlerPlayServer.processPlayerBlockPlacement(NetHandlerPlayServer.java:657)
at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.processPacket(C08PacketPlayerBlockPlacement.java:74)
at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.processPacket(C08PacketPlayerBlockPlacement.java:122)
at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:241)
at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:182)
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:726)
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:614)
at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:118)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:485)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752)


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

-- Head --
Stacktrace:
at net.minecraft.network.NetHandlerPlayServer.processPlayerBlockPlacement(NetHandlerPlayServer.java:657)
at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.processPacket(C08PacketPlayerBlockPlacement.java:74)
at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.processPacket(C08PacketPlayerBlockPlacement.java:122)
at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:241)

-- Ticking connection --
Details:
Connection: net.minecraft.network.NetworkManager@6852fbac
Stacktrace:
at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:182)
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:726)
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:614)
at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:118)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:485)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_60-ea, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 281729216 bytes (268 MB) / 608174080 bytes (580 MB) up to 943194112 bytes (899 MB)
JVM Flags: 0 total; 
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP v9.05 FML v7.10.85.1230 Minecraft Forge 10.13.2.1230 5 mods loaded, 5 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.10.85.1230} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.13.2.1230} [Minecraft Forge] (forgeSrc-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
minersbasic{1.0.0} [Miner's Basic] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
magicum{pre-0.1.0} [Magicum] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['_Bedrock_Miner_'/208, l='Magicum', x=-18,54, y=70,00, z=-174,92]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'
[12:16:18] [Client thread/INFO] [sTDOUT]: [net.minecraft.client.Minecraft:displayCrashReport:393]: #@!@# Game crashed! Crash report saved to: #@!@# .\crash-reports\crash-2014-11-29_12.16.18-server.txt
[12:16:18] [Client thread/INFO] [FML]: Waiting for the server to terminate/save.
[12:16:18] [server thread/INFO]: Saving worlds
[12:16:18] [server thread/INFO]: Saving chunks for level 'Magicum'/Overworld
[12:16:18] [server thread/INFO]: Saving chunks for level 'Magicum'/Nether
[12:16:18] [server thread/INFO]: Saving chunks for level 'Magicum'/The End
[12:16:19] [server thread/INFO] [FML]: Unloading dimension 0
[12:16:19] [server thread/INFO] [FML]: Unloading dimension -1
[12:16:19] [server thread/INFO] [FML]: Unloading dimension 1
[12:16:19] [server thread/INFO] [FML]: Applying holder lookups
[12:16:19] [server thread/INFO] [FML]: Holder lookups applied
[12:16:19] [server thread/INFO] [FML]: The state engine was in incorrect state SERVER_STOPPING and forced into state SERVER_STOPPED. Errors may have been discarded.
[12:16:19] [Client thread/INFO] [FML]: Server terminated.
AL lib: (EE) alc_cleanup: 1 device not closed

Item class:

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package com.bedrockminer.magicum.item.classes;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;

import com.bedrockminer.magicum.Magicum;
import com.bedrockminer.magicum.item.ModCreativeTabs;
import com.bedrockminer.magicum.network.GuiHandler;

public class ItemCodexMagicum extends Item {

public ItemCodexMagicum(String unlocalizedName) {
	this.setUnlocalizedName(unlocalizedName);
	this.setTextureName(Magicum.MODID + ":" + unlocalizedName);
	this.setCreativeTab(ModCreativeTabs.materials);
}

@Override
public ItemStack onItemRightClick(ItemStack stack, World world, EntityPlayer player) {
	if (!world.isRemote)
		player.openGui(Magicum.instance, GuiHandler.IDCodexMagicum, world, (int)player.posX, (int)player.posY, (int)player.posZ);
	return stack;
}

}

GuiClass: ( I left out some code which is used for internal stuff)

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public class GuiCodexMagicum extends GuiScreen {

private static GuiRenderer g = GuiRenderer.instance;

private static ResourceLocation codex = new ResourceLocation(Magicum.MODID, "codex/codex.png");
private static ResourceLocation icons = new ResourceLocation(Magicum.MODID, "textures/gui/gui.png");
private static ResourceLocation entrybg = new ResourceLocation(Magicum.MODID, "codex/bg/entry.png");

private static ResourceLocation overlay_craft = new ResourceLocation(Magicum.MODID, "codex/overlay/craft.png");
private static ResourceLocation overlay_magiccraft = new ResourceLocation(Magicum.MODID, "codex/overlay/magiccraft.png");

public int guiwidth = 384;
public int guiheight = 230;
public int width;
public int height;
public int scale;
public int guileft;
public int guitop;

public int current_page = Codex.pageList.get(0).getID();
public int page_scroll_pos = 0;

public int site_scroll_x;
public int site_scroll_y;
private int last_click_x;
private int last_click_y;
private boolean dragging_site;

private GuiButton b_page_scroll_left;
private GuiButton b_page_scroll_right;
private GuiButton b_page_next;
private GuiButton b_page_prev;

private boolean is_displaying_entry = false;
private int displayedEntry;
private int entry_page = 0;

private CodexEntry entry_clicked;
private long entry_click_timer = 0;
private final long ENTRY_CLICK_ROTATE_TIME = 250L;

private ItemStack tooltip_stack;
private CodexEntry tooltip_entry;
private int tooltip_x;
private int tooltip_y;

@Override
public boolean doesGuiPauseGame() {
	return false;
}

@Override
public void drawScreen(int mouseX, int mouseY, float floatValue) {
	this.drawDefaultBackground();
	g.zLevel = 0;
	g.updateScaledResolution();
	g.reset();
        g.bindTexture(this.codex);
	g.drawTexturedRect(this.guileft, this.guitop, 512, 256, 0, 0, this.guiwidth, this.guiheight);
	String title = this.is_displaying_entry ? Codex.entryList.get(this.displayedEntry).getTitle() : Codex.pageList.get(this.current_page).getTitle();
	g.zLevel = 300;
	g.drawString(title, this.guileft + 8, this.guitop + 6, Color.LIGHT_GRAY, true);
	g.zLevel = 0;
	for (int i = 0; i < 3; i ++) {
		if (this.page_scroll_pos + i < Codex.pageList.size()) {
			g.bindTexture(this.codex);
			g.reset();
			g.drawTexturedRect(this.guileft + 300 + i * 24, this.guitop, 512, 256, this.page_scroll_pos + i == this.current_page && !this.is_displaying_entry ? 38 : 14, 230, 24, 24);
			g.drawItemStack(Codex.pageList.get(this.page_scroll_pos + i).getIconItemStack(), this.guileft + 304 + i * 24, this.guitop + 4, "");
		}
	}
	g.reset();

	if (this.entry_click_timer != 0 && this.entry_click_timer < Minecraft.getSystemTime()) {
		CodexClient.get(this.entry_clicked).onEntryClicked(this.entry_clicked, this, this.mc);
		this.entry_click_timer = 0;
	}

	if (!this.is_displaying_entry) { //Normal Background with Icons
		g.bindTexture(this.getCurrentPage().getBackground());
		g.drawTexturedRect(this.guileft + 12, this.guitop + 24, this.getCurrentPage().bg_width, this.getCurrentPage().bg_height, this.site_scroll_x - this.getCurrentPage().bg_x, this.site_scroll_y - this.getCurrentPage().bg_y, 360, 194);
		GLUtil.setScissors((this.guileft + 12) * this.scale, (this.height - this.guitop - 218) * this.scale, 360 * this.scale, 194 * this.scale);
		this.tooltip_entry = null;

		for (CodexEntry entry : this.getCurrentPage().entries) {
			GLUtil.pushMatrix();
			this.renderCodexEntry(entry, mouseX, mouseY);
			GLUtil.popMatrix();
		}
		for (CodexEntry entry : this.getCurrentPage().entries) {
			GLUtil.pushMatrix();
			this.renderCodexEntryLines(entry);
			GLUtil.popMatrix();
		}

		if (this.tooltip_entry != null) {
			CodexClient.get(this.tooltip_entry).renderEntryTooltip(this.tooltip_entry, this, this.mc, this.tooltip_x, this.tooltip_y);
		}
		this.b_page_next.visible = this.b_page_prev.visible = false;
	} else { //Content of a clicked Entry
		g.bindTexture(entrybg);
		g.zLevel = 10;
		g.drawTexturedRect(this.guileft + 12, this.guitop + 24, 512, 256, 0, 0, 360, 194);
		CodexEntry page = Codex.entryList.get(this.displayedEntry);
		if (page.getPages().length > 0) {
			while (this.entry_page * 2 + 1 > page.getPages().length) {
				this.entry_page--;
			}
			this.tooltip_stack = null;
			this.drawSiteContent(page, page.getPages()[this.entry_page * 2], this.guileft + 22, this.guitop + 30, mouseX, mouseY);
			if (this.entry_page * 2 + 2 <= page.getPages().length)
				this.drawSiteContent(page, page.getPages()[this.entry_page * 2 + 1], this.guileft + 197, this.guitop + 30, mouseX, mouseY);
			if (this.tooltip_stack != null)
				g.drawTooltip(this.tooltip_stack, this.tooltip_x, this.tooltip_y);
		}
		if (page.getPages().length > this.entry_page * 2 + 2)
			this.b_page_next.visible = true;
		else
			this.b_page_next.visible = false;
		if (this.entry_page > 0)
			this.b_page_prev.visible = true;
		else
			this.b_page_prev.visible = false;
	}
	super.drawScreen(mouseX, mouseY, floatValue);
}

@SuppressWarnings("unchecked")
@Override
public void initGui() {
	g.updateScaledResolution();
        this.width = g.scale.getScaledWidth();
        this.height = g.scale.getScaledHeight();
        this.scale = g.scale.getScaleFactor();
        this.guileft = this.width / 2 - this.guiwidth / 2;
        this.guitop = this.height / 2 - this.guiheight / 2;
	this.buttonList.add(this.b_page_scroll_left = new GuiCodexButton(0, this.guileft + 291, this.guitop + 6, true, false));
	this.buttonList.add(this.b_page_scroll_right = new GuiCodexButton(1, this.guileft + 374, this.guitop + 6, false, false));
	this.buttonList.add(this.b_page_prev = new GuiCodexButton(2, this.guileft + 20, this.guitop + 195, true, true));
	this.buttonList.add(this.b_page_next = new GuiCodexButton(3, this.guileft + 341, this.guitop + 195, false, true));
	this.b_page_scroll_left.visible = this.b_page_scroll_right.visible = Codex.pageList.size() > 3;
}

public void showEntryPage(int entryID) {
	this.is_displaying_entry = true;
	this.displayedEntry = entryID;
	this.entry_page = 0;
}

@Override
protected void actionPerformed(GuiButton btn) {
	switch (btn.id) {
	case 0:
		if (this.page_scroll_pos > 0) this.page_scroll_pos --;
		break;
	case 1:
		if (this.page_scroll_pos < Codex.pageList.size() - 3) this.page_scroll_pos ++;
		break;
	case 2:
		this.entry_page--;
		break;
	case 3:
		this.entry_page++;
		break;
	}
}

@Override
protected void keyTyped(char key, int keycode) {
	if (keycode == 1) { //Escape
		if (this.is_displaying_entry) { //Exit currently displayed entry page
			this.entry_click_timer = 0;
			this.is_displaying_entry = false;
			this.entry_page = 0;
			this.displayedEntry = 0;
		} else {
			this.mc.displayGuiScreen((GuiScreen)null);
            this.mc.setIngameFocus();
		}
	}
}
}

Write if you need more code!

larsgerrits · November 29, 2014

Put a breakpoint in NetHandlerPlayServer:657, and see which one of the parameters of S2FPacketSetSlot is null.

Bedrock_Miner · November 29, 2014

THe variable which is null is "slot".

Its created with this line:

Slot slot = this.playerEntity.openContainer.getSlotFromInventory(this.playerEntity.inventory, this.playerEntity.inventory.currentItem);

Bedrock_Miner · November 30, 2014

Here is the GUI Handler:

package com.bedrockminer.magicum.network;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.world.World;

import com.bedrockminer.magicum.block.tileentity.TileElementaryExtractor;
import com.bedrockminer.magicum.block.tileentity.TileMagicCrafting;
import com.bedrockminer.magicum.block.tileentity.TileMagicTable;
import com.bedrockminer.magicum.block.tileentity.TileMagicalBrewing;
import com.bedrockminer.magicum.client.gui.GuiCodexMagicum;
import com.bedrockminer.magicum.client.gui.container.ContainerElementaryExtractor;
import com.bedrockminer.magicum.client.gui.container.ContainerEmpty;
import com.bedrockminer.magicum.client.gui.container.ContainerMagicCrafting;
import com.bedrockminer.magicum.client.gui.container.ContainerMagicTable;
import com.bedrockminer.magicum.client.gui.container.ContainerMagicalBrewing;
import com.bedrockminer.magicum.client.gui.guicontainer.GuiElementaryExtractor;
import com.bedrockminer.magicum.client.gui.guicontainer.GuiMagicCrafting;
import com.bedrockminer.magicum.client.gui.guicontainer.GuiMagicTable;
import com.bedrockminer.magicum.client.gui.guicontainer.GuiMagicalBrewing;

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

public class GuiHandler implements IGuiHandler {

public static final int IDCodexMagicum = 0;

@Override
public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
	if (ID == IDCodexMagicum)
		return new ContainerEmpty();

	return null;
}

@Override
public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
	if (ID == IDCodexMagicum)
		return new GuiCodexMagicum();

	return null;
}

}

ContainerEmpty:

package com.bedrockminer.magicum.client.gui.container;

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

public class ContainerEmpty extends Container {

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

}

larsgerrits · November 30, 2014

If you have a Gui extending GuiScreen, you don't need an inventory at all. Just leave the

getServerGuiElement

returning null and call

player.openGui()

on the client side, instead of the server side.

Bedrock_Miner · November 30, 2014

Hey, this works!

Thanks a lot!

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[SOLVED] GUI crash

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