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[1.12.2] Cusotome container crashes game when opened in spectator mode

Posted April 8, 20187 yr

The container works as intended in other gamemodes. But in spectator mode game crashes as soon as it is opened.

Tile entity class:

package com.fcelon.enhancedcraft.tileentities;

import com.fcelon.enhancedcraft.Main;

import net.minecraft.block.state.IBlockState;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.init.Items;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.ItemStackHelper;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.network.NetworkManager;
import net.minecraft.network.play.server.SPacketUpdateTileEntity;
import net.minecraft.tileentity.TileEntityLockable;
import net.minecraft.util.NonNullList;

public class TileEntityBookshelf extends TileEntityLockable {
	
	public boolean hasBook1;
	public boolean hasBook2;
	public boolean hasBook3;
	public boolean hasBook4;
	public boolean hasBook5;
	public boolean hasBook6;

	private String customName;
    private NonNullList<ItemStack> BookshelfItemStacks = NonNullList.<ItemStack>withSize(6, ItemStack.EMPTY);

	@Override
	public int getSizeInventory() {
		
		return BookshelfItemStacks.size();
	}

	@Override
	public boolean isEmpty()
	{
		for (ItemStack itemstack : this.BookshelfItemStacks)
        {
            if (!itemstack.isEmpty())
            {
                return false;
            }
        }

        return true;
	}
	
	public int getBookCount()
	{
		int i = 0;
		for (ItemStack itemstack : this.BookshelfItemStacks)
        {
            if (!itemstack.isEmpty())
            {
                i++;
            }
        }

        return i;
	}

	@Override
	public ItemStack getStackInSlot(int index)
	{
		 return index >= 0 && index < this.BookshelfItemStacks.size() ? (ItemStack)this.BookshelfItemStacks.get(index) : ItemStack.EMPTY;
	}

	public ItemStack decrStackSize(int index, int count)
    {
        return ItemStackHelper.getAndSplit(this.BookshelfItemStacks, index, count);
    }

    /**
     * Removes a stack from the given slot and returns it.
     */
    public ItemStack removeStackFromSlot(int index)
    {
        ItemStack stack = ItemStackHelper.getAndRemove(this.BookshelfItemStacks, index);
        IBlockState state = world.getBlockState(pos);
        world.notifyBlockUpdate(pos, state, state, 3);
        return stack;
    }

    /**
     * Sets the given item stack to the specified slot in the inventory (can be crafting or armor sections).
     */
    public void setInventorySlotContents(int index, ItemStack stack)
    {
        if (index >= 0 && index < this.BookshelfItemStacks.size())
        {
            this.BookshelfItemStacks.set(index, stack);
            IBlockState state = world.getBlockState(pos);
            world.notifyBlockUpdate(pos, state, state, 3);
        }
    }

	@Override
	public int getInventoryStackLimit() {
		
		return 1;
	}

	@Override
	public boolean isUsableByPlayer(EntityPlayer player)
	{
		if (this.world.getTileEntity(this.pos) != this)
        {
            return false;
        }
        else
        {
            return player.getDistanceSq((double)this.pos.getX() + 0.5D, (double)this.pos.getY() + 0.5D, (double)this.pos.getZ() + 0.5D) <= 64.0D;
        }
	}

	@Override
	public void openInventory(EntityPlayer player)
	{
	}

	@Override
	public void closeInventory(EntityPlayer player) 
	{
	}

	@Override
	public boolean isItemValidForSlot(int index, ItemStack stack) {
		if (stack.getItem() == Items.BOOK || stack.getItem() == Items.ENCHANTED_BOOK || stack.getItem() == Items.WRITABLE_BOOK || stack.getItem() == Items.WRITTEN_BOOK)
		{
			return true;
		}
		return false;
	}

	@Override
	public int getField(int id)
	{
		return 0;
	}

	@Override
	public void setField(int id, int value)
	{
	}

	@Override
	public int getFieldCount()
	{
		return 0;
	}

	@Override
	public void clear()
	{
		BookshelfItemStacks.clear();
	}

	@Override
	public String getName()
	{
		return this.hasCustomName() ? this.customName : "modcontainer.bookshelf";
	}

	@Override
	public boolean hasCustomName()
	{
		return this.customName != null && !this.customName.isEmpty();
	}

	@Override
	public Container createContainer(InventoryPlayer playerInventory, EntityPlayer playerIn) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public String getGuiID()
	{
		return Main.MOD_ID + ":bookshelf";
	}
	
	@Override
	public NBTTagCompound writeToNBT(NBTTagCompound compound) {
		super.writeToNBT(compound);
		ItemStackHelper.saveAllItems(compound, this.BookshelfItemStacks);
		
		if (this.hasCustomName())
        {
            compound.setString("CustomName", this.customName);
        }
		
		return compound;
	}
	
	@Override
	public void readFromNBT(NBTTagCompound compound) {
		super.readFromNBT(compound);
		
		ItemStackHelper.loadAllItems(compound, this.BookshelfItemStacks);

        if (compound.hasKey("CustomName", 8))
        {
            this.customName = compound.getString("CustomName");
        }
	}
	
	@Override
	public void onDataPacket(NetworkManager net, SPacketUpdateTileEntity pkt) {
		NBTTagCompound compound = pkt.getNbtCompound();
		System.out.println("recieving");
		readUpdateTag(compound);
	}
	
	@Override
	public SPacketUpdateTileEntity getUpdatePacket() {
		NBTTagCompound compound = new NBTTagCompound();
		this.writeUpdateTag(compound);
		System.out.println("sending");
		return new SPacketUpdateTileEntity(pos, getBlockMetadata(), compound);
	}
	
	@Override
	public NBTTagCompound getUpdateTag() {
		NBTTagCompound compound = super.getUpdateTag();
		writeUpdateTag(compound);
		return compound;
	}
	
	public void readUpdateTag (NBTTagCompound compound)
	{
		int j = compound.getInteger("hasBooks");
		System.out.println(j);
		this.hasBook1 = ((j & 1) == 1);
		this.hasBook2 = (((j >> 1) & 1) == 1);
		this.hasBook3 = (((j >> 2) & 1) == 1);
		this.hasBook4 = (((j >> 3) & 1) == 1);
		this.hasBook5 = (((j >> 4) & 1) == 1);
		this.hasBook6 = (((j >> 5) & 1) == 1);
	}
	
	public void writeUpdateTag (NBTTagCompound compound)
	{
		int j = 0;
		for (int i = 0; i < this.getSizeInventory(); i++)
		{
			if (!this.getStackInSlot(i).isEmpty())
			{
				j += 1 << i;
			}
		}
		System.out.println(j);
		compound.setInteger("hasBooks", j);
	}

}

Container class:

ackage com.fcelon.enhancedcraft;

import com.fcelon.enhancedcraft.tileentities.TileEntityBookshelf;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;

public class ContainerBookshelf extends Container{
	
	public TileEntityBookshelf bookshelfInventory;
	
	public ContainerBookshelf(IInventory playerInventory, TileEntityBookshelf bookshelfInventory)
	{
		this.bookshelfInventory = bookshelfInventory;
		for (int i = 0; i < bookshelfInventory.getSizeInventory(); i++)
		{
			this.addSlotToContainer(new Slot(bookshelfInventory, i, 34 + i * 18, 20)
					{
						public boolean isItemValid(net.minecraft.item.ItemStack stack)
						{
							return bookshelfInventory.isItemValidForSlot(0, stack);
						}
					}
			);
		}
		
		for (int l = 0; l < 3; ++l)
        {
            for (int k = 0; k < 9; ++k)
            {
                this.addSlotToContainer(new Slot(playerInventory, k + l * 9 + 9, 8 + k * 18, l * 18 + 51));
            }
        }

        for (int i1 = 0; i1 < 9; ++i1)
        {
            this.addSlotToContainer(new Slot(playerInventory, i1, 8 + i1 * 18, 109));
        }
	}
	
	public ItemStack transferStackInSlot(EntityPlayer playerIn, int index)
    {
        ItemStack itemstack = ItemStack.EMPTY;
        Slot slot = this.inventorySlots.get(index);

        if (slot != null && slot.getHasStack())
        {
            ItemStack itemstack1 = slot.getStack();
            itemstack = itemstack1.copy();

            if (index < this.bookshelfInventory.getSizeInventory())
            {
                if (!this.mergeItemStack(itemstack1, this.bookshelfInventory.getSizeInventory(), this.inventorySlots.size(), true))
                {
                    return ItemStack.EMPTY;
                }
            }
            else if (!this.mergeItemStack(itemstack1, 0, this.bookshelfInventory.getSizeInventory(), false))
            {
                return ItemStack.EMPTY;
            }

            if (itemstack1.isEmpty())
            {
                slot.putStack(ItemStack.EMPTY);
            }
            else
            {
                slot.onSlotChanged();
            }
        }

        return itemstack;
    }

	@Override
	public boolean canInteractWith(EntityPlayer playerIn) {
		// TODO Auto-generated method stub
		return bookshelfInventory.isUsableByPlayer(playerIn);
	}

}

Thanks for any help

Quote

April 8, 20187 yr

Author

Sorry, I completely forgot to paste the ctash report

Spoiler

[12:17:32] [main/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:printToSYSOUT:630]: ---- Minecraft Crash Report ----
// Would you like a cupcake?

Time: 4/8/18 12:17 PM
Description: Ticking player

java.lang.NullPointerException: Ticking player
   at net.minecraft.entity.player.EntityPlayerMP.onUpdate(EntityPlayerMP.java:365)
   at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2164)
   at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:870)
   at net.minecraft.world.World.updateEntity(World.java:2123)
   at net.minecraft.world.WorldServer.tickPlayers(WorldServer.java:671)
   at net.minecraft.world.World.updateEntities(World.java:1903)
   at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:642)
   at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:840)
   at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:741)
   at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:192)
   at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:590)
   at java.lang.Thread.run(Unknown Source)

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

-- Head --
Thread: Client thread
Stacktrace:
   at net.minecraft.entity.player.EntityPlayerMP.onUpdate(EntityPlayerMP.java:365)
   at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2164)
   at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:870)
   at net.minecraft.world.World.updateEntity(World.java:2123)

-- Player being ticked --
Details:
   Entity Type: null (net.minecraft.entity.player.EntityPlayerMP)
   Entity ID: 0
   Entity Name: Player137
   Entity's Exact location: -15.35, 55.06, 19.22
   Entity's Block location: World: (-16,55,19), Chunk: (at 0,3,3 in -1,1; contains blocks -16,0,16 to -1,255,31), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
   Entity's Momentum: 0.00, 0.00, 0.00
   Entity's Passengers: []
   Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
   at net.minecraft.world.WorldServer.tickPlayers(WorldServer.java:671)
   at net.minecraft.world.World.updateEntities(World.java:1903)
   at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:642)

-- Affected level --
Details:
   Level name: Texture test
   All players: 1 total; [EntityPlayerMP['Player137'/0, l='Texture test', x=-15.35, y=55.06, z=19.22]]
   Chunk stats: ServerChunkCache: 625 Drop: 0
   Level seed: 383275871841080968
   Level generator: ID 01 - flat, ver 0. Features enabled: true
   Level generator options: 3;minecraft:bedrock,3*minecraft:stone,52*minecraft:sandstone;2;
   Level spawn location: World: (0,56,0), Chunk: (at 0,3,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
   Level time: 124871 game time, 4836 day time
   Level dimension: 0
   Level storage version: 0x04ABD - Anvil
   Level weather: Rain time: 44866 (now: false), thunder time: 95389 (now: false)
   Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
   at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:840)
   at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:741)
   at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:192)
   at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:590)
   at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
   Minecraft Version: 1.12.2
   Operating System: Windows 10 (amd64) version 10.0
   Java Version: 1.8.0_101, Oracle Corporation
   Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
   Memory: 366889064 bytes (349 MB) / 877658112 bytes (837 MB) up to 1879048192 bytes (1792 MB)
   JVM Flags: 0 total;
   IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
   FML: MCP 9.42 Powered by Forge 14.23.1.2555 5 mods loaded, 5 mods active
   States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

   Loaded coremods (and transformers):
   GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
   Profiler Position: N/A (disabled)
   Player Count: 1 / 8; [EntityPlayerMP['Player137'/0, l='Texture test', x=-15.35, y=55.06, z=19.22]]
   Type: Integrated Server (map_client.txt)
   Is Modded: Definitely; Client brand changed to 'fml,forge'

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[1.12.2] Cusotome container crashes game when opened in spectator mode

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