[1.15.2] Entity error

[littlemonge]

Hi , 

 

Im having some troubles working with entities...

 

Here is my custom entity class :

 

package littlemonge.rpgcraft.entity;

import littlemonge.rpgcraft.entity.base.RpgCraftBaseEntity;
import littlemonge.rpgcraft.item.DiamoniteItem;
import littlemonge.rpgcraft.utils.Utils;
import net.minecraft.block.Blocks;
import net.minecraft.entity.EntityType;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;

public class DiamoniteEntity extends RpgCraftBaseEntity {
	
	public static EntityType<DiamoniteEntity> ENTITY_TYPE;
	
	private int driedProgress = 0;
	
	public DiamoniteEntity(EntityType<? extends DiamoniteEntity> type, World world) {
        super(type, world);
    }

    public DiamoniteEntity(final World w, final double x, final double y, final double z, final ItemStack is) {
        super(ENTITY_TYPE, w, x, y, z, is);
        this.setNoDespawn();
    }

	@Override
	public void tick() {
		super.tick();
		
		final ItemStack itemStack = this.getItem();
		final DiamoniteItem diamonite = (DiamoniteItem) itemStack.getItem();
		
      
		if(this.onGround && (Utils.findBlockUnderEntity(this).equals(Blocks.MAGMA_BLOCK))){
			if(Utils.isClient()) {
				driedProgress++;
			}else {
				driedProgress += 0.5;
			}
		}
		
		if(driedProgress % 10 == 0 ) {
			  ItemStack newItem = diamonite.triggerDry(itemStack.copy());
              this.setItem(newItem);
		}
	}

}

 

Here is where I register the entity :

 

package littlemonge.rpgcraft.init;

import littlemonge.rpgcraft.entity.DiamoniteEntity;
import littlemonge.rpgcraft.utils.Reference;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityClassification;
import net.minecraft.entity.EntityType;
import net.minecraftforge.event.RegistryEvent;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.registries.ObjectHolder;

@Mod.EventBusSubscriber(modid = Reference.MODID, bus = Mod.EventBusSubscriber.Bus.MOD)
@ObjectHolder(Reference.MODID)
public final class ModEntities {


	@SubscribeEvent
	public static void registerEntitites(RegistryEvent.Register<EntityType<?>> event) {
		init();
		event.getRegistry().registerAll(DiamoniteEntity.ENTITY_TYPE);
	}
	
	private static void init() {
		DiamoniteEntity.ENTITY_TYPE =  createEntityType(EntityType.Builder
				.<DiamoniteEntity>create(DiamoniteEntity::new, EntityClassification.MISC).size(0.25F, 0.25F)
				.setTrackingRange(64).setUpdateInterval(20).setShouldReceiveVelocityUpdates(false), Reference.DIAMONITE_ENTITY);
	}

	@SuppressWarnings("rawtypes")
	public static <T extends Entity> EntityType<T> createEntityType(EntityType.Builder builder, String name) {
		EntityType<T> type = (EntityType<T>) builder.build(Reference.MODID + '.' + name).setRegistryName(name);
		return type;
	}
}

 

And here its the crash :

 

java.lang.NullPointerException: null
	at net.minecraft.client.renderer.entity.EntityRendererManager.shouldRender(EntityRendererManager.java:232) ~[forge-1.15.2-31.0.14_mapped_snapshot_20200131-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.WorldRenderer.getViewVector(WorldRenderer.java:940) ~[forge-1.15.2-31.0.14_mapped_snapshot_20200131-1.15.1-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.GameRenderer.renderWorld(GameRenderer.java:612) ~[forge-1.15.2-31.0.14_mapped_snapshot_20200131-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.GameRenderer.updateCameraAndRender(GameRenderer.java:434) ~[forge-1.15.2-31.0.14_mapped_snapshot_20200131-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:957) ~[forge-1.15.2-31.0.14_mapped_snapshot_20200131-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.run(Minecraft.java:554) ~[forge-1.15.2-31.0.14_mapped_snapshot_20200131-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:177) ~[forge-1.15.2-31.0.14_mapped_snapshot_20200131-1.15.1-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_231] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_231] {}
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_231] {}
	at net.minecraftforge.userdev.FMLUserdevClientLaunchProvider.lambda$launchService$0(FMLUserdevClientLaunchProvider.java:55) ~[forge-1.15.2-31.0.14_mapped_snapshot_20200131-1.15.1-recomp.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.0.0-milestone.4.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.0.0-milestone.4.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.0.0-milestone.4.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.0.0-milestone.4.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.0.0-milestone.4.jar:?] {}
	at net.minecraftforge.userdev.LaunchTesting.main(LaunchTesting.java:102) [forge-1.15.2-31.0.14_mapped_snapshot_20200131-1.15.1-recomp.jar:?]

 

Can somebody please help me to find why im having a nullpointer?

 

 

Thanks in advance.

[poopoodice]

You need a renderer for your entity

[littlemonge]

Can't use minecraft basic renderer?

 

 

The entity is very simple, it is just a custom entity for an object when you throw it on the ground.

[Novârch]

  On 7/23/2020 at 7:38 AM, littlemonge said:

it is just a custom entity for an object when you throw it on the ground

Expand  

An ItemEntity, Minecraft (or Forge, idk) makes one for your items automatically.

[littlemonge]

  On 7/23/2020 at 7:42 AM, Novârch said:

An ItemEntity, Minecraft (or Forge, idk) makes one for your items automatically.

Expand  

 

Yes, but I want to add some logic to ItemEntity, that's why I created the class. The class "DiamoniteEntity" its the custom ItemEntity for my custom DiamoniteItem

[poopoodice]

The reason I said it is because I don't see you registering your renderer anywhere.

[littlemonge]

Could you send an example of a Renderer please?

[poopoodice]

I'm not sure if you need to create one, but it won't be hard since you said your entity is just another version of ItemEntity (just look into renderer/entity/ItemRenderer).

and use 

RenderingRegistry.registerEntityRenderingHandler(entitytype, rendererf)

to register your renderer

[littlemonge]

Here is the renderer : 

package littlemonge.rpgcraft.render;

import littlemonge.rpgcraft.entity.DiamoniteEntity;
import littlemonge.rpgcraft.utils.ResourceLocationReference;
import net.minecraft.client.renderer.culling.ClippingHelperImpl;
import net.minecraft.client.renderer.entity.EntityRenderer;
import net.minecraft.client.renderer.entity.EntityRendererManager;
import net.minecraft.entity.Entity;
import net.minecraft.util.ResourceLocation;

public class DiamoniteEntityRenderer<T extends Entity> extends EntityRenderer<DiamoniteEntity> {

	public DiamoniteEntityRenderer(EntityRendererManager renderManager) {
		super(renderManager);
	}

	@Override
	public ResourceLocation getEntityTexture(DiamoniteEntity entity) {
		
		return new ResourceLocation(ResourceLocationReference.DIAMONITE_MODEL);
	}

	@Override
	public boolean shouldRender(DiamoniteEntity livingEntityIn, ClippingHelperImpl camera, double camX, double camY,
			double camZ) {
		return false;
	}
}

 

  On 7/23/2020 at 9:14 AM, poopoodice said:

I'm not sure if you need to create one, but it won't be hard since you said your entity is just another version of ItemEntity (just look into renderer/entity/ItemRenderer).

and use 

RenderingRegistry.registerEntityRenderingHandler(entitytype, rendererf)

to register your renderer

Expand  

And this line its not working for me.

[Novârch]

  On 7/23/2020 at 10:52 AM, littlemonge said:

And this line its not working for me.

Expand  

Please don't tell me you copied it word for word.

[littlemonge]

have I to impl "IRenderFactory"?

Edited July 23, 2020 by littlemonge

[littlemonge]

  On 7/23/2020 at 1:16 PM, littlemonge said:

have I to impl "IRenderFactory"?

Expand  

ok no matter, I almost have it, the problem now is that the entity is invisible.

[Novârch]

  On 7/23/2020 at 1:47 PM, littlemonge said:

ok no matter, I almost have it, the problem now is that the entity is invisible.

Expand  

Try overriding Entity#createSpawnPacket in your entity and return NetworkHooks#getEntitySpawningPacket from it.

[littlemonge]

I did what you says but i can only see the hitboxes.

Could it be a problem with the path to the "png" with the texture?

[poopoodice]

firstly:

	@Override
	public boolean shouldRender(DiamoniteEntity livingEntityIn, ClippingHelperImpl camera, double camX, double camY,
			double camZ) {
		return false;
	}

secondly, you don't have any "render" method

 

@Override
public void render(...)

but isn't your entity bsaed on the ItemEntity? See how ItemRenderer does it.

  Quote

ItemEntity (just look into renderer/entity/ItemRenderer)

Expand  

 

[Dzuchun]

  On 7/23/2020 at 2:57 PM, littlemonge said:

I did what you says but i can only see the hitboxes.

Could it be a problem with the path to the "png" with the texture?

Expand  

To check this, search your log for "FileNotFound" string. Likely will output only FileNotFoundException's stacktraces. All you need is to check comments after each - if minecraft can't find some texture that he needs, there would be a report about it.

 

You will likely find one about version checker file, don't care about that.

[littlemonge]

  On 7/24/2020 at 10:57 AM, Dzuchun said:

To check this, search your log for "FileNotFound" string. Likely will output only FileNotFoundException's stacktraces. All you need is to check comments after each - if minecraft can't find some texture that he needs, there would be a report about it.

 

You will likely find one about version checker file, don't care about that.

Expand  

Im not having any exception.

[littlemonge]

Here is my render Class :

 

package littlemonge.rpgcraft.render;

import com.mojang.blaze3d.matrix.MatrixStack;

import littlemonge.rpgcraft.entity.DiamoniteEntity;
import littlemonge.rpgcraft.utils.ResourceLocationReference;
import net.minecraft.client.renderer.IRenderTypeBuffer;
import net.minecraft.client.renderer.Vector3f;
import net.minecraft.client.renderer.entity.EntityRenderer;
import net.minecraft.client.renderer.entity.EntityRendererManager;
import net.minecraft.util.ResourceLocation;

public class DiamoniteEntityRenderer extends EntityRenderer<DiamoniteEntity> {

	public DiamoniteEntityRenderer(EntityRendererManager renderManagerIn) {
		super(renderManagerIn);
	}

	@Override
	public ResourceLocation getEntityTexture(DiamoniteEntity entity) {
		return new ResourceLocation(ResourceLocationReference.DIAMONITE_MODEL);
	}

	@Override
	public void render(DiamoniteEntity entityIn, float entityYaw, float partialTicks, MatrixStack matrixStackIn,
			IRenderTypeBuffer bufferIn, int packedLightIn) {
		matrixStackIn.push();
		matrixStackIn.scale(1f, 1f, 1f);
		matrixStackIn.translate(0.5d, 0.5D, 0.5D);
		matrixStackIn.rotate(Vector3f.YP.rotationDegrees(360));
		matrixStackIn.pop();
		super.render(entityIn, entityYaw, partialTicks, matrixStackIn, bufferIn, packedLightIn);
	}

}

where is the mistake¿?

[Dzuchun]

  On 7/27/2020 at 8:54 AM, littlemonge said:

matrixStackIn.push();

matrixStackIn.scale(1f, 1f, 1f);

matrixStackIn.translate(0.5d, 0.5D, 0.5D);

matrixStackIn.rotate(Vector3f.YP.rotationDegrees(360));

matrixStackIn.pop();

Expand  

This actually renders nothing. Superclass method renders name label, as I understood, so I predict your entity is not rendered at all.

There are two ways how to render things (they do the same, but differ at usage).

 

1) Create a model for your entity. Model should have a separate render method which invokes ModelRenderer#render, that actually does rendering.

Advantage: you may not perform rendering itself; drawback: you'll need to understand how this all works (but that's easy with a ton of examples from vanilla Minecraft and some experimenting).

 

2) Preform rendering with "bare hands" - using GL11 methods directly or some predefined sequences.

Advantage: you may render most mind-blowing things that could ever come to your head; drawback: you'll need to study OpenGL a bit (well, depends on rendering complexity).

 

Read sign.

Edited July 27, 2020 by Dzuchun

[littlemonge]

  On 7/27/2020 at 12:10 PM, Dzuchun said:

This actually renders nothing. Superclass method renders name label, as I understood, so I predict your entity is not rendered at all.

There are two ways how to render things (they do the same, but differ at usage).

 

1) Create a model for your entity. Model should have a separate render method which invokes ModelRenderer#render, that actually does rendering.

Advantage: you may not perform rendering itself; drawback: you'll need to understand how this all works (but that's easy with a ton of examples from vanilla Minecraft and some experimenting).

 

2) Preform rendering with "bare hands" - using GL11 methods directly or some predefined sequences.

Advantage: you may render most mind-blowing things that could ever come to your head; drawback: you'll need to study OpenGL a bit (well, depends on rendering complexity).

 

Read sign.

Expand  

Can you bring me an example for method 1?

Thanks a lot for answering

 

[Dzuchun]

  On 8/14/2020 at 8:21 AM, littlemonge said:

Can you bring me an example for method 1?

Expand  

CowModel class and, I think, all the classes implementing EntityModel class (not sure)

 

Also, check blockbench.

Edited August 19, 2020 by Dzuchun

[littlemonge]

The entity i am trying to render it just an entity like ItemEntity, it is an entity that is created when player drops an item.

 

There is not a way to do it easy?