Hi guys!

I've been working on a custom furnace and every time I right click the block the GUI doesn't open and crashes the client. Here is the error log:

 

---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 9/22/14 7:51 PM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
at cpw.mods.fml.common.network.NetworkRegistry.getLocalGuiContainer(NetworkRegistry.java:263)
at cpw.mods.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:93)
at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2514)
at io.kaminocoding.commumod.blocks.BlockPurifier.onBlockActivated(BlockPurifier.java:77)
at net.minecraft.client.multiplayer.PlayerControllerMP.onPlayerRightClick(PlayerControllerMP.java:380)
at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1529)
at net.minecraft.client.Minecraft.runTick(Minecraft.java:2044)
at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1039)
at net.minecraft.client.Minecraft.run(Minecraft.java:961)
at net.minecraft.client.main.Main.main(Main.java:164)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at GradleStart.bounce(GradleStart.java:107)
at GradleStart.startClient(GradleStart.java:100)
at GradleStart.main(GradleStart.java:55)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)


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

-- Head --
Stacktrace:
at cpw.mods.fml.common.network.NetworkRegistry.getLocalGuiContainer(NetworkRegistry.java:263)
at cpw.mods.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:93)
at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2514)
at io.kaminocoding.commumod.blocks.BlockPurifier.onBlockActivated(BlockPurifier.java:77)
at net.minecraft.client.multiplayer.PlayerControllerMP.onPlayerRightClick(PlayerControllerMP.java:380)
at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1529)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['ForgeDevName'/385, l='MpServer', x=-122.33, y=65.62, z=369.55]]
Chunk stats: MultiplayerChunkCache: 25, 25
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options: 
Level spawn location: World: (104,64,256), Chunk: (at 8,4,0 in 6,16; contains blocks 96,0,256 to 111,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 19037 game time, 6791 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 28 total; [EntityPig['Pig'/402, l='MpServer', x=-111.22, y=63.00, z=343.06], EntityPig['Pig'/403, l='MpServer', x=-103.50, y=69.00, z=339.31], EntityPig['Pig'/400, l='MpServer', x=-101.50, y=66.00, z=348.50], EntityPig['Pig'/401, l='MpServer', x=-101.50, y=66.00, z=346.50], EntityChicken['Chicken'/406, l='MpServer', x=-117.81, y=79.14, z=326.22], EntityChicken['Chicken'/407, l='MpServer', x=-171.63, y=61.14, z=362.53], EntityBat['Bat'/404, l='MpServer', x=-119.82, y=20.62, z=323.18], EntityPig['Pig'/15, l='MpServer', x=-95.41, y=70.00, z=342.38], EntityChicken['Chicken'/405, l='MpServer', x=-115.44, y=78.14, z=328.44], EntityPig['Pig'/395, l='MpServer', x=-99.88, y=63.00, z=387.75], EntityPig['Pig'/16, l='MpServer', x=-91.13, y=63.00, z=365.66], EntityPig['Pig'/394, l='MpServer', x=-101.31, y=63.00, z=391.25], EntityPig['Pig'/393, l='MpServer', x=-102.28, y=66.00, z=358.47], EntityPig['Pig'/392, l='MpServer', x=-130.91, y=66.00, z=354.53], EntityBat['Bat'/399, l='MpServer', x=-127.43, y=23.00, z=406.95], EntityChicken['Chicken'/398, l='MpServer', x=-126.34, y=65.00, z=350.44], EntityPig['Pig'/397, l='MpServer', x=-122.50, y=69.00, z=344.50], EntityItem['item.item.stick'/396, l='MpServer', x=-148.88, y=62.13, z=378.41], EntityClientPlayerMP['ForgeDevName'/385, l='MpServer', x=-122.33, y=65.62, z=369.55], EntityPig['Pig'/386, l='MpServer', x=-112.75, y=63.00, z=380.59], EntityPig['Pig'/391, l='MpServer', x=-133.78, y=64.00, z=387.94], EntityPig['Pig'/390, l='MpServer', x=-113.56, y=69.00, z=355.47], EntityPig['Pig'/389, l='MpServer', x=-121.50, y=68.00, z=361.39], EntityPig['Pig'/388, l='MpServer', x=-135.47, y=64.00, z=376.13], EntityPig['Pig'/444, l='MpServer', x=-172.50, y=64.96, z=408.69], EntityCow['Cow'/445, l='MpServer', x=-174.53, y=62.96, z=412.22], EntityChicken['Chicken'/446, l='MpServer', x=-166.41, y=68.14, z=350.53], EntityBat['Bat'/447, l='MpServer', x=-163.75, y=58.10, z=421.47]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.addWorldInfoToCrashReport(WorldClient.java:417)
at net.minecraft.client.Minecraft.addGraphicsAndWorldToCrashReport(Minecraft.java:2568)
at net.minecraft.client.Minecraft.run(Minecraft.java:990)
at net.minecraft.client.main.Main.main(Main.java:164)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at GradleStart.bounce(GradleStart.java:107)
at GradleStart.startClient(GradleStart.java:100)
at GradleStart.main(GradleStart.java:55)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Mac OS X (x86_64) version 10.7.5
Java Version: 1.7.0_55, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 849882216 bytes (810 MB) / 1056309248 bytes (1007 MB) up to 1056309248 bytes (1007 MB)
JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
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 v7.10.18.1180 Minecraft Forge 10.13.0.1180 4 mods loaded, 4 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.10.18.1180} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.0.1180.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.13.0.1180} [Minecraft Forge] (forgeSrc-1.7.10-10.13.0.1180.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
commumod{1.4.0a Build: 56} [Community Mod] (main) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Launched Version: 1.7.10
LWJGL: 2.9.1
OpenGL: Intel GMA X3100 OpenGL Engine GL version 2.1 APPLE-7.4.1, Intel Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because EXT_framebuffer_object is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

 

Here is the code from the file that is erroring:

 

package io.kaminocoding.commumod.blocks;

import cpw.mods.fml.common.FMLLog;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import io.kaminocoding.commumod.entity.TileEntityPurifier;
import io.kaminocoding.commumod.help.Reference;
import io.kaminocoding.commumod.main;
import net.minecraft.block.Block;
import net.minecraft.block.BlockContainer;
import net.minecraft.block.material.Material;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.IIcon;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;

import java.util.Random;

/**
* Created by noah on 9/9/14.
*/
public class BlockPurifier extends BlockContainer
{
    @SideOnly(Side.CLIENT)
    private IIcon top;

    @SideOnly(Side.CLIENT)
    private IIcon front;

    private static boolean isBurning;

    private final boolean isIsBurning;
    private final Random rand = new Random();

    public BlockPurifier(boolean isActive)
    {
        super(Material.rock);
        setBlockName("purifierIdle");
        setCreativeTab(main.modTab);
        isIsBurning = isActive;
    }

    @SideOnly(Side.CLIENT)
    public void registerIcons(IIconRegister register)
    {
        this.blockIcon = register.registerIcon(Reference.MODID + ":purifier_side");
        this.front = register.registerIcon(this.isIsBurning ? Reference.MODID + ":purifier_frontActive" : Reference.MODID + ":purifier_frontIdle");
        this.top = register.registerIcon(Reference.MODID + ":purifier_top");
    }

    public IIcon getIcon(int side, int meta)
    {
        if(side == 1)
        {
            return top;
        }
        else if (side == 3)
        {
            return front;
        }
        else
        {
            return this.blockIcon;
        }
    }

    public boolean onBlockActivated(World world, int x, int y, int z, EntityPlayer player, int par6, float par7, float par8, float par9)
    {
        FMLLog.info("Attempting to open GUI for purifier");
        player.openGui(main.instance, 10, world, x, y, z);
        return true;
    }

    public Item getItemDropped(int par1, Random rand, int par3)
    {
        return Item.getItemFromBlock(ModBlocks.purifier_idle);
    }

    public Item getItem(World world, int par2, int par3, int par4)
    {
        return Item.getItemFromBlock(ModBlocks.purifier_idle);
    }

    @SideOnly(Side.CLIENT)
    public void onBlockAdded(World world, int x, int y, int z)
    {
        super.onBlockAdded(world, x, y, z);
        this.direction(world, x, y, z);
    }

    private void direction(World world, int x, int y, int z) {
        if ( !world.isRemote )
        {
            Block direction = world.getBlock(x, y, z - 1);
            Block direction1 = world.getBlock(x, y, z + 1);
            Block direction2 = world.getBlock(x - 1, y, z);
            Block direction3 = world.getBlock(x + 1, y, z);

            byte byte0 = 3;

            if (direction.func_149730_j() && direction.func_149730_j())
            {
                byte0 = 3;
            }
            if (direction1.func_149730_j() && direction1.func_149730_j())
            {
                byte0 = 2;
            }
            if (direction2.func_149730_j() && direction2.func_149730_j())
            {
                byte0 = 5;
            }
            if (direction3.func_149730_j() && direction3.func_149730_j())
            {
                byte0 = 4;
            }
            world.setBlockMetadataWithNotify(x, y, z, byte0, 2);
        }
    }

    public void onBlockPlacedBy(World world, int x, int y, int z, EntityLivingBase entity, ItemStack itemStack)
    {
        int direction = MathHelper.floor_double((double) (entity.rotationYaw * 4.0F / 360.0F) + 0.5D ) & 3;

        if( direction == 0)
        {
            world.setBlockMetadataWithNotify(x, y, z, 2, 2);

        }
        if( direction == 1)
        {
            world.setBlockMetadataWithNotify(x, y, z, 5, 2);
        }
        if( direction == 2)
        {
            world.setBlockMetadataWithNotify(x, y, z, 3, 2);

        }
        if( direction == 3)
        {
            world.setBlockMetadataWithNotify(x, y, z, 4, 2);

        }
        if (itemStack.hasDisplayName())
        {
            ((TileEntityPurifier) world.getTileEntity(x, y, z)).furnaceName(itemStack.getDisplayName());
        }

    }

    public static void updateBlockState(boolean burning, World world, int x, int y, int z)
    {
        int direction = world.getBlockMetadata(x, y, z);
        TileEntity tileEntity = world.getTileEntity(x, y, z);
        isBurning = true;

        if (burning)
        {
            world.setBlock(x, y, z, ModBlocks.purifier_active);
        }
        else
        {
            world.setBlock(x, y, z, ModBlocks.purifier_idle);
        }

        isBurning = false;

        world.setBlockMetadataWithNotify(x, y, z, direction, 2);

        if(tileEntity != null)
        {
            tileEntity.validate();
            world.setTileEntity(x, y, z, tileEntity);
        }
    }

    public void breakBlock(World world, int x, int y, int z, Block block, int meta)
    {
        if (!isBurning)
        {
            TileEntityPurifier tileEntityPurifier = (TileEntityPurifier)world.getTileEntity(x, y, z);

            if (tileEntityPurifier != null)
            {
                for (int i1 = 0; i1 < tileEntityPurifier.getSizeInventory(); ++i1)
                {
                    ItemStack itemstack = tileEntityPurifier.getStackInSlot(i1);

                    if (itemstack != null)
                    {
                        float f = this.rand.nextFloat() * 0.8F + 0.1F;
                        float f1 = this.rand.nextFloat() * 0.8F + 0.1F;
                        float f2 = this.rand.nextFloat() * 0.8F + 0.1F;

                        while (itemstack.stackSize > 0)
                        {
                            int j1 = this.rand.nextInt(21) + 10;

                            if (j1 > itemstack.stackSize)
                            {
                                j1 = itemstack.stackSize;
                            }

                            itemstack.stackSize -= j1;
                            EntityItem entityitem = new EntityItem(world, (double)((float)x + f), (double)((float)y + f1), (double)((float)z + f2), new ItemStack(itemstack.getItem(), j1, itemstack.getItemDamage()));

                            if (itemstack.hasTagCompound())
                            {
                                entityitem.getEntityItem().setTagCompound((NBTTagCompound)itemstack.getTagCompound().copy());
                            }

                            float f3 = 0.05F;
                            entityitem.motionX = (double)((float)this.rand.nextGaussian() * f3);
                            entityitem.motionY = (double)((float)this.rand.nextGaussian() * f3 + 0.2F);
                            entityitem.motionZ = (double)((float)this.rand.nextGaussian() * f3);
                            world.spawnEntityInWorld(entityitem);
                        }
                    }
                }

                world.func_147453_f(x, y, z, block);
            }
        }

        super.breakBlock(world, x, y, z, block, meta);
    }

    @SideOnly(Side.CLIENT)
    public void randomDisplayTick(World world, int x, int y, int z, Random rand)
    {
        if (this.isIsBurning)
        {
            int l = world.getBlockMetadata(x, y, z);
            float f = (float)x + 0.5F;
            float f1 = (float)y + 0.0F + rand.nextFloat() * 6.0F / 16.0F;
            float f2 = (float)z + 0.5F;
            float f3 = 0.52F;
            float f4 = rand.nextFloat() * 0.6F - 0.3F;

            if (l == 4)
            {
                world.spawnParticle("smoke", (double)(f - f3), (double)f1, (double)(f2 + f4), 0.0D, 0.0D, 0.0D);
                world.spawnParticle("flame", (double)(f - f3), (double)f1, (double)(f2 + f4), 0.0D, 0.0D, 0.0D);
            }
            else if (l == 5)
            {
                world.spawnParticle("smoke", (double)(f + f3), (double)f1, (double)(f2 + f4), 0.0D, 0.0D, 0.0D);
                world.spawnParticle("flame", (double)(f + f3), (double)f1, (double)(f2 + f4), 0.0D, 0.0D, 0.0D);
            }
            else if (l == 2)
            {
                world.spawnParticle("smoke", (double)(f + f4), (double)f1, (double)(f2 - f3), 0.0D, 0.0D, 0.0D);
                world.spawnParticle("flame", (double)(f + f4), (double)f1, (double)(f2 - f3), 0.0D, 0.0D, 0.0D);
            }
            else if (l == 3)
            {
                world.spawnParticle("smoke", (double)(f + f4), (double)f1, (double)(f2 + f3), 0.0D, 0.0D, 0.0D);
                world.spawnParticle("flame", (double)(f + f4), (double)f1, (double)(f2 + f3), 0.0D, 0.0D, 0.0D);
            }
        }
    }


    @Override
    public TileEntity createNewTileEntity(World p_149915_1_, int p_149915_2_) {
        return null;
    }
}

 

 

Any help is appreciated. Thanks!

How do I fix that? Sorry... I'm a novice and GUI/containers are what I want to learn next. I have no idea what to do after I did the block related stuff...

Is this what you're looking for?

package io.kaminocoding.commumod.client.gui;

import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.resources.I18n;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.ContainerFurnace;
import net.minecraft.tileentity.TileEntityFurnace;
import net.minecraft.util.ResourceLocation;
import org.lwjgl.opengl.GL11;

/**
* Created by noah on 9/19/14.
*/
public class GuiPurifier extends GuiContainer {

    private static final ResourceLocation furnaceGuiTextures = new ResourceLocation("textures/gui/container/purifier.png");
    private TileEntityFurnace tilePurifier;


    public GuiPurifier(InventoryPlayer p_i1091_1_, TileEntityFurnace p_i1091_2_)
    {
        super(new ContainerFurnace(p_i1091_1_, p_i1091_2_));
        this.tilePurifier = p_i1091_2_;
    }

    /**
     * Draw the foreground layer for the GuiContainer (everything in front of the items)
     */
    protected void drawGuiContainerForegroundLayer(int p_146979_1_, int p_146979_2_)
    {
        String s = this.tilePurifier.hasCustomInventoryName() ? this.tilePurifier.getInventoryName() : I18n.format(this.tilePurifier.getInventoryName(), new Object[0]);
        this.fontRendererObj.drawString(s, this.xSize / 2 - this.fontRendererObj.getStringWidth(s) / 2, 6, 4210752);
        this.fontRendererObj.drawString(I18n.format("container.inventory", new Object[0]), 8, this.ySize - 96 + 2, 4210752);
    }

    protected void drawGuiContainerBackgroundLayer(float p_146976_1_, int p_146976_2_, int p_146976_3_)
    {
        GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
        this.mc.getTextureManager().bindTexture(furnaceGuiTextures);
        int k = (this.width - this.xSize) / 2;
        int l = (this.height - this.ySize) / 2;
        this.drawTexturedModalRect(k, l, 0, 0, this.xSize, this.ySize);

        if (this.tilePurifier.isBurning())
        {
            int i1 = this.tilePurifier.getBurnTimeRemainingScaled(13);
            this.drawTexturedModalRect(k + 56, l + 36 + 12 - i1, 176, 12 - i1, 14, i1 + 1);
            i1 = this.tilePurifier.getCookProgressScaled(24);
            this.drawTexturedModalRect(k + 79, l + 34, 176, 14, i1 + 1, 16);
        }
    }
}

 

If this isn't it then I guess I don't have one...