[1.10.2] Hanging Entity help

Leomelonseeds · February 20, 2017

Im making a security camera, that has to be an entity since I'm going to implement a feature to spectate it. I'm extending entityHanging since paintings are similar, but I am getting a crash when I try placing it down.

ModSecurityCamera:

package com.leomelonseeds.moarstuff.items;

import javax.annotation.Nullable;

import com.leomelonseeds.moarstuff.entity.EntityCamera;

import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.EntityHanging;
import net.minecraft.entity.item.EntityItemFrame;
import net.minecraft.entity.item.EntityPainting;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.EnumActionResult;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.EnumHand;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

public class ModSecurityCamera extends Item
{
    private final Class <? extends EntityHanging > hangingEntityClass;

    public ModSecurityCamera(Class <? extends EntityHanging > entityClass)
    {
        this.hangingEntityClass = entityClass;
        this.setCreativeTab(Moditems.moarStuff);
        this.setUnlocalizedName("security_camera");
    }

    /**
     * Called when a Block is right-clicked with this Item
     */
    public EnumActionResult onItemUse(ItemStack stack, EntityPlayer playerIn, World worldIn, BlockPos pos, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ)
    {
        BlockPos blockpos = pos.offset(facing);

        if (facing != EnumFacing.DOWN && facing != EnumFacing.UP && playerIn.canPlayerEdit(blockpos, facing, stack))
        {
            EntityHanging entityhanging = this.createEntity(worldIn, blockpos, facing);

            if (entityhanging != null && entityhanging.onValidSurface())
            {
                if (!worldIn.isRemote)
                {
                    entityhanging.playPlaceSound();
                    worldIn.spawnEntityInWorld(entityhanging);
                }

                --stack.stackSize;
            }

            return EnumActionResult.SUCCESS;
        }
        else
        {
            return EnumActionResult.FAIL;
        }
    }

    @Nullable
    private EntityHanging createEntity(World worldIn, BlockPos pos, EnumFacing clickedSide)
    {
        return (EntityHanging)(this.hangingEntityClass == EntityCamera.class ? new EntityCamera(worldIn, pos, clickedSide): null);  
        }
}

Error:

[20:11:16] [Server thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at net.minecraft.util.Util.runTask(Util.java:26) [Util.class:?]
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:742) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:687) [MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156) [IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:536) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_25]
Caused by: java.lang.NullPointerException
	at net.minecraft.entity.EntityHanging.onValidSurface(EntityHanging.java:147) ~[EntityHanging.class:?]
	at com.leomelonseeds.moarstuff.items.ModSecurityCamera.onItemUse(ModSecurityCamera.java:42) ~[ModSecurityCamera.class:?]
	at net.minecraftforge.common.ForgeHooks.onPlaceItemIntoWorld(ForgeHooks.java:780) ~[ForgeHooks.class:?]
	at net.minecraft.item.ItemStack.onItemUse(ItemStack.java:158) ~[ItemStack.class:?]
	at net.minecraft.server.management.PlayerInteractionManager.processRightClickBlock(PlayerInteractionManager.java:509) ~[PlayerInteractionManager.class:?]
	at net.minecraft.network.NetHandlerPlayServer.processRightClickBlock(NetHandlerPlayServer.java:706) ~[NetHandlerPlayServer.class:?]
	at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.processPacket(CPacketPlayerTryUseItemOnBlock.java:68) ~[CPacketPlayerTryUseItemOnBlock.class:?]
	at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.processPacket(CPacketPlayerTryUseItemOnBlock.java:13) ~[CPacketPlayerTryUseItemOnBlock.class:?]
	at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:15) ~[PacketThreadUtil$1.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at net.minecraft.util.Util.runTask(Util.java:25) ~[Util.class:?]
	... 5 more

Choonster · February 20, 2017

You called EntityHanging#onValidSurface without setting EntityHanging#hangingPosition to a non-null value. which probably means that you're calling the EntityHanging(World) constructor instead of the EntityHanging(World, BlockPos) constructor.

If this isn't the case, post the ModSecurityCamera class.

Leomelonseeds · February 20, 2017

Well I already have the ModSecurityCamera up there.

If you want the entity class, here:

package com.leomelonseeds.moarstuff.entity;

import javax.annotation.Nullable;

import com.leomelonseeds.moarstuff.items.Moditems;

import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityHanging;
import net.minecraft.entity.item.EntityPainting;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.SoundEvents;
import net.minecraft.item.ItemStack;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class EntityCamera extends EntityHanging {

	public EntityCamera(World worldIn) {
		super(worldIn);
		
	}
	
	 public EntityCamera(World worldIn, BlockPos pos, EnumFacing facing)
	    {
	        super(worldIn, pos);
	    }
	 
	 @SideOnly(Side.CLIENT)
	    public EntityCamera(World worldIn, BlockPos pos, EnumFacing facing, String title)
	    {
	        this(worldIn, pos, facing);

	      
	        this.updateFacingWithBoundingBox(facing);
	    }

	@Override
	public int getWidthPixels() {
		
		return 12;
	}

	@Override
	public int getHeightPixels() {
		
		return 12;
	}

	@Override
	public void onBroken(@Nullable Entity brokenEntity) {
		
		if (this.worldObj.getGameRules().getBoolean("doEntityDrops"))
        {
            this.playSound(SoundEvents.BLOCK_STONE_BREAK, 1.0F, 1.0F);

            if (brokenEntity instanceof EntityPlayer)
            {
                EntityPlayer entityplayer = (EntityPlayer)brokenEntity;

                if (entityplayer.capabilities.isCreativeMode)
                {
                    return;
                }
            }

            this.entityDropItem(new ItemStack(Moditems.camera), 0.0F);
        }
	
		
		
		
	}

	@Override
	public void playPlaceSound() {
		
		this.playSound(SoundEvents.BLOCK_STONE_HIT, 1.0F, 1.0F);
		
	}
	
	 public void setLocationAndAngles(double x, double y, double z, float yaw, float pitch)
	    {
	        this.setPosition(x, y, z);
	    }

	    /**
	     * Set the position and rotation values directly without any clamping.
	     */
	    @SideOnly(Side.CLIENT)
	    public void setPositionAndRotationDirect(double x, double y, double z, float yaw, float pitch, int posRotationIncrements, boolean teleport)
	    {
	        BlockPos blockpos = this.hangingPosition.add(x - this.posX, y - this.posY, z - this.posZ);
	        this.setPosition((double)blockpos.getX(), (double)blockpos.getY(), (double)blockpos.getZ());
	    }

}

Choonster · February 20, 2017

I meant EntityCamera, yes.

It's actually the EntityHanging#facingDirection field that's null rather than EntityHanging#hangingPosition as I initially suspected; this is because the EntityCamera(World, BlockPos, EnumFacing) constructor doesn't call EntityHanging#updateFacingWithBoundingBox.

Leomelonseeds · February 20, 2017

OK it works now. A few problems: I know my entity is invisible right now, but when I tried to destroy it, it also destroys the block behind it, and after a few seconds drops the block. How would I set a break time, and what is wrong with it?

Draco18s · February 20, 2017

On 2/20/2017 at 3:01 PM, TheSunCat said:

Paintings don't have a break time. They have 1HP, drop a painting item (which is actually a spawn egg ). Same with item frames.

Expand

Actually they don't. Entities that aren't living don't even have an HP field. When they take any damage at all, even if that damage is 0, they die.

Draco18s · February 20, 2017

On 2/20/2017 at 5:20 PM, TheSunCat said:

Also, is it possible to add a custom painting without replacing the actual painting file?

Expand

Hell if I know. Probably not.

Draco18s · February 20, 2017

On 2/20/2017 at 6:25 PM, TheSunCat said:

Ok. What is the h*** for?

Expand

Because I'm an abrasive jerk and I don't actually know everything, despite appearances on this forum.

I've never touched paintings and don't feel like doing the research for you.

jeffryfisher · February 20, 2017

I've added custom paintings, creating new item and entity classes for them. I added a bunch of texture files and left the existing one alone. Because my custom painting class is not identical to EntityPainting, the client-side message handler would not cooperate. The message was ok, but I needed to jump through some hoops on the client side to spawn my entity.

Leomelonseeds · February 21, 2017

@TheSunCatPlease turn signatures on and read Draco18s'. Its nice.

So how about my problems?

On 2/20/2017 at 4:57 AM, Leomelonseeds said:

t when I tried to destroy it, it also destroys the block behind it, and after a few seconds drops the block

Expand

Leomelonseeds · February 22, 2017

Apparently not...

Leomelonseeds · February 24, 2017

Why isint it working?

On 2/20/2017 at 7:27 PM, jeffryfisher said:

The message was ok, but I needed to jump through some hoops on the client side to spawn my entity.

Expand

Well how would I do that?

Code:

package com.leomelonseeds.moarstuff.entity;

import javax.annotation.Nullable;

import com.leomelonseeds.moarstuff.items.Moditems;

import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityHanging;
import net.minecraft.entity.item.EntityPainting;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.SoundEvents;
import net.minecraft.item.ItemStack;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.math.AxisAlignedBB;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class EntityCamera extends EntityHanging {

	public EntityCamera(World worldIn) {
		super(worldIn);
		
	}
	
	 public EntityCamera(World worldIn, BlockPos pos, EnumFacing facing)
	    {
	        super(worldIn, pos);
	        
	        this.updateFacingWithBoundingBox(facing);
	    }
	 
	 @SideOnly(Side.CLIENT)
	    public EntityCamera(World worldIn, BlockPos pos, EnumFacing facing, String title)
	    {
	        this(worldIn, pos, facing);

	      
	        this.updateFacingWithBoundingBox(facing);
	    }

	@Override
	public int getWidthPixels() {
		
		return 12;
	}

	@Override
	public int getHeightPixels() {
		
		return 12;
	}

	@Override
	public void onBroken(@Nullable Entity brokenEntity) {
		
		if (this.worldObj.getGameRules().getBoolean("doEntityDrops"))
        {
            this.playSound(SoundEvents.BLOCK_STONE_BREAK, 1.0F, 1.0F);

            if (brokenEntity instanceof EntityPlayer)
            {
                EntityPlayer entityplayer = (EntityPlayer)brokenEntity;

                if (entityplayer.capabilities.isCreativeMode)
                {
                    return;
                }
            }

            this.entityDropItem(new ItemStack(Moditems.camera), 0.0F);
        }
	
		
		
		
	}

	@Override
	public void playPlaceSound() {
		
		this.playSound(SoundEvents.BLOCK_STONE_HIT, 1.0F, 1.0F);
		
	}
	
	 public void setLocationAndAngles(double x, double y, double z, float yaw, float pitch)
	    {
	        this.setPosition(x, y, z);
	    }

	    /**
	     * Set the position and rotation values directly without any clamping.
	     */
	    @SideOnly(Side.CLIENT)
	    public void setPositionAndRotationDirect(double x, double y, double z, float yaw, float pitch, int posRotationIncrements, boolean teleport)
	    {
	        BlockPos blockpos = this.hangingPosition.add(x - this.posX, y - this.posY, z - this.posZ);
	        this.setPosition((double)blockpos.getX(), (double)blockpos.getY(), (double)blockpos.getZ());
	    }

}

jeffryfisher · February 24, 2017

In 1.10.2, to stop MC from trying to spawn a vanilla painting, I needed to provide a callback class to a custom spawning registration that was called from client proxy init.

Client Proxy line in init:

    registration.setCustomSpawning (new SomeSpawnCallback (), false);

Excerpt from Callback Class:

import com.google.common.base.Function;

@SideOnly(Side.CLIENT)
public class SomeSpawnCallback implements Function<EntitySpawnMessage, Entity> {
  
  ...
  
  @Override
  public Entity apply(EntitySpawnMessage m) {
    // read message and call your hanging entity's client-side constructor
  }
}

Forge reflection will call your "apply" method.

Leomelonseeds · February 24, 2017

On 2/24/2017 at 8:31 PM, jeffryfisher said:

// read message

Expand

So... What is that?

And also which package shouold I put that class in?

Edited February 24, 2017 by Leomelonseeds

Leomelonseeds · February 25, 2017

Ok so the ClientRegistry line is saying that it can not make a static reference to the non static method of setCustomSpawning. When I try to store an instance of the EntityRegistration class in my clientproxy, what things should I put in the constructor? Nothing seems to be working right now.

Leomelonseeds · February 25, 2017

Ok now what values should I put in the constructor EntityCamera(client-side) when creating an instance of my Entity in SomeSpawnCallback to use in the apply method? null does not work apparently, and this either:

package com.leomelonseeds.moarstuff.entity;

import com.google.common.base.Function;

import net.minecraft.entity.Entity;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.fml.common.network.internal.FMLMessage.EntitySpawnMessage;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;
import com.leomelonseeds.moarstuff.entity.EntityCamera;


	
	@SideOnly(Side.CLIENT)
	public class SomeSpawnCallBack implements Function<EntitySpawnMessage, Entity> {
	  
	private World worldIn;
	private BlockPos pos;
	private EnumFacing facing;
	private String title;
	EntityCamera entityC = new EntityCamera(worldIn, pos, facing, title);
	  
	  @Override
	  public Entity apply(EntitySpawnMessage m) {
		
	
	    return entityC;
		  
	  }
	  
	}

jeffryfisher · February 25, 2017

The apply method gets parameter m (message). See what that gives you.

When I make a mod, I put everything in one package.

You might want to replace "Some" with a word pertaining to what you're working on (e.g. "Camera").

Sorry 'bout the local "registration" variable. Here's what I used in 1.8 - 1.10.2:

    container = Loader.instance ().getIndexedModList ().get (modId);
    EntityRegistration registration = EntityRegistry.instance ().lookupModSpawn (container, 0);

I think you want to instantiate each new camera inside the callback. Then return a new entity every time. The parameters for the constructor are whatever your camera needs plus what HangingEntity needs. If you're lucky, you'll find what you need inside the message m.

Leomelonseeds · February 25, 2017

On 2/25/2017 at 9:50 AM, jeffryfisher said:

When I make a mod, I put everything in one package.

Expand

Gosh, that's so... unorganized!

jeffryfisher · February 25, 2017

I make simple mods that don't need lots of compartmentalization.

Leomelonseeds · February 25, 2017

On 2/25/2017 at 9:50 AM, jeffryfisher said:

The parameters for the constructor are whatever your camera needs plus what HangingEntity needs. If you're lucky, you'll find what you need inside the message m.

Expand

Well, some examples please? Like, what do I put for worldIn?

Leomelonseeds · February 25, 2017

Ok I changed my code to this:

package com.leomelonseeds.moarstuff.entity;

import com.google.common.base.Function;

import net.minecraft.entity.Entity;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.fml.common.network.internal.FMLMessage.EntitySpawnMessage;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;
import com.leomelonseeds.moarstuff.entity.EntityCamera;


	
	@SideOnly(Side.CLIENT)
	public class SomeSpawnCallBack implements Function<EntitySpawnMessage, Entity> {
	  
	public World worldIn;
	public BlockPos pos;
	public EnumFacing facing;
	public String title;
	
	  
	  @Override
	  public Entity apply(EntitySpawnMessage m) {
		System.out.println(m);
		EntityCamera entityC = new EntityCamera(worldIn, pos, facing, title);
	    return entityC;
		  
	  }
	  
	}

But now its giving me a null pointer exeption for this line:

registration.setCustomSpawning( new SomeSpawnCallBack (), false);

Leomelonseeds · February 26, 2017

Wait I put this:

public ModContainer container = Loader.instance ().getIndexedModList ().get (Main.MODID);
    EntityRegistration registration = EntityRegistry.instance ().lookupModSpawn (container, 0);

Does that work? Cause it errors when I copyPaste yours in there.

jeffryfisher · February 26, 2017

I don't know if it's the best way, but I hunted around and found a world client instance in FML:

WorldClient wc = FMLClientHandler.instance ().getWorldClient ();

Everything else I needed for my constructor came out of EntitySpawnMessage m.

Leomelonseeds · February 26, 2017

Its still giving me this:

[12:28:34] [Client thread/ERROR] [FML]: Caught exception from Moar Stuff (moarstuff)
java.lang.NullPointerException
	at com.leomelonseeds.moarstuff.ClientProxy.init(ClientProxy.java:65) ~[bin/:?]
	at com.leomelonseeds.moarstuff.Main.init(Main.java:33) ~[bin/:?]
	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.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:602) ~[forgeSrc-1.10.2-12.18.3.2185.jar:?]
	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 com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-17.0.jar:?]
	at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-17.0.jar:?]
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-17.0.jar:?]
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-17.0.jar:?]
	at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-17.0.jar:?]
	at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:243) ~[forgeSrc-1.10.2-12.18.3.2185.jar:?]
	at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:221) ~[forgeSrc-1.10.2-12.18.3.2185.jar:?]
	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 com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-17.0.jar:?]
	at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-17.0.jar:?]
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-17.0.jar:?]
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-17.0.jar:?]
	at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-17.0.jar:?]
	at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:145) [LoadController.class:?]
	at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:795) [Loader.class:?]
	at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:324) [FMLClientHandler.class:?]
	at net.minecraft.client.Minecraft.startGame(Minecraft.java:561) [Minecraft.class:?]
	at net.minecraft.client.Minecraft.run(Minecraft.java:386) [Minecraft.class:?]
	at net.minecraft.client.main.Main.main(Main.java:118) [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:?]
	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.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
	at GradleStart.main(GradleStart.java:26) [start/:?]

When i try to open game.

ClientProxy:

package com.leomelonseeds.moarstuff;

import com.leomelonseeds.moarstuff.blocks.BlockMegaTNT;
import com.leomelonseeds.moarstuff.blocks.BlockNuke;
import com.leomelonseeds.moarstuff.blocks.Modblocks;
import com.leomelonseeds.moarstuff.client.render.blocks.BlockRenderRegister;
import com.leomelonseeds.moarstuff.client.render.blocks.TileGrillRenderer;
import com.leomelonseeds.moarstuff.client.render.entity.RenderMegaTNTPrimed;
import com.leomelonseeds.moarstuff.client.render.entity.RenderNukePrimed;
import com.leomelonseeds.moarstuff.client.render.items.ItemRenderRegister;
import com.leomelonseeds.moarstuff.entity.EntityCamera;
import com.leomelonseeds.moarstuff.entity.MegaTNTPrimed;
import com.leomelonseeds.moarstuff.entity.ModLivingDropsEvent;
import com.leomelonseeds.moarstuff.entity.NukePrimed;
import com.leomelonseeds.moarstuff.entity.SomeSpawnCallBack;
import com.leomelonseeds.moarstuff.tileentity.Grill;

import net.minecraft.block.properties.IProperty;
import net.minecraft.client.renderer.block.statemap.StateMap;
import net.minecraft.item.Item;
import net.minecraftforge.client.ForgeHooksClient;
import net.minecraftforge.client.model.ModelLoader;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.fml.client.registry.ClientRegistry;
import net.minecraftforge.fml.client.registry.RenderingRegistry;
import net.minecraftforge.fml.common.Loader;
import net.minecraftforge.fml.common.ModContainer;
import net.minecraftforge.fml.common.event.FMLInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
import net.minecraftforge.fml.common.registry.EntityRegistry;
import net.minecraftforge.fml.common.registry.EntityRegistry.EntityRegistration;



public class ClientProxy extends CommonProxy {
	
	
	
	ModContainer container = Loader.instance ().getIndexedModList ().get (Main.MODID);
    EntityRegistration registration = EntityRegistry.instance ().lookupModSpawn (container, 0);

	@Override
	public void preInit(FMLPreInitializationEvent e){ 
		super.preInit(e);
		
		ModelLoader.setCustomStateMapper(Modblocks.megatnt, (new StateMap.Builder()).ignore(new IProperty[] {BlockMegaTNT.EXPLODE}).build());
		ModelLoader.setCustomStateMapper(Modblocks.nuke, (new StateMap.Builder()).ignore(new IProperty[] {BlockNuke.EXPLODE}).build());
	   RenderingRegistry.registerEntityRenderingHandler(NukePrimed.class, RenderNukePrimed::new);
	    RenderingRegistry.registerEntityRenderingHandler(MegaTNTPrimed.class, RenderMegaTNTPrimed::new);
	    MinecraftForge.EVENT_BUS.register(new ModLivingDropsEvent());
        
	  
	}
	@Override
	public void init(FMLInitializationEvent e) {
		super.init(e);
		 BlockRenderRegister.registerBlockRenderer();
		 ItemRenderRegister.registerItemRenderer();
		 EntityRegistry.registerModEntity(MegaTNTPrimed.class, "megatnt", 1, Main.instance, 160, 10, true);
		 EntityRegistry.registerModEntity(NukePrimed.class, "nuke", 2, Main.instance, 160, 10, true);
		 EntityRegistry.registerModEntity(EntityCamera.class, "camera", 3, Main.instance, 100000, 30, false);
		 ClientRegistry.bindTileEntitySpecialRenderer(Grill.class, new TileGrillRenderer());
		 ForgeHooksClient.registerTESRItemStack(Item.getItemFromBlock(Modblocks.grill), 0, Grill.class);
		 registration.setCustomSpawning(new SomeSpawnCallBack(), false);
		
		 
	}

	@Override
	public void postInit(FMLPostInitializationEvent e) {
		super.postInit(e);
	}

}

jeffryfisher · February 27, 2017

Try moving assignments such as "EntityRegistration registration = ..." into methods whose timing assures that they'll get values other than null at the time of assignment.

You might be far enough along in this that you need more general help to understand the differences between preinit, init etc, so you might want to start a new thread.

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[1.10.2] Hanging Entity help

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