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[1.14] FakePlayerFactory


SamB440

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I have tried using the FakePlayerFactory in 1.14, however upon using it, the game crashes:

java.lang.NullPointerException: Exception ticking world
    at net.minecraft.world.TrackedEntity.func_219451_a(TrackedEntity.java:284) ~[?:?] {re:classloading}
    at net.minecraft.world.TrackedEntity.func_219457_c(TrackedEntity.java:256) ~[?:?] {re:classloading}
    at net.minecraft.world.TrackedEntity.func_219453_a(TrackedEntity.java:153) ~[?:?] {re:classloading}
    at net.minecraft.world.server.ChunkManager.func_219169_g(ChunkManager.java:978) ~[?:?] {re:classloading}
    at net.minecraft.world.server.ServerChunkProvider.func_217220_m(SourceFile:417) ~[?:?] {re:classloading,pl:accesstransformer:B}
    at net.minecraft.world.server.ServerChunkProvider.func_217207_a(SourceFile:335) ~[?:?] {re:classloading,pl:accesstransformer:B}
    at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:309) ~[?:?] {re:classloading}
    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:829) ~[?:?] {re:classloading,pl:accesstransformer:B}
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:764) ~[?:?] {re:classloading,pl:accesstransformer:B}
    at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:112) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:622) [?:?] {re:classloading,pl:accesstransformer:B}
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51] {}

I used:

world.addEntity(FakePlayerFactory.get(ServerLifecycleHooks.getCurrentServer().getWorld(DimensionType.OVERWORLD), new GameProfile(UUID.randomUUID(), "Farmer")));

 

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A fake player is not an Entity that can be added to the world.

What are you trying to achieve?

Edited by DavidM

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1. Read the EAQ before asking for help. Remember to provide the appropriate log(s).

2. Versions below 1.11 are no longer supported due to their age. Update to a modern version of Minecraft to receive support.

 

 

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5 hours ago, DavidM said:

A fake player is not an Entity that can be added to the world.

What are you trying to achieve?

Thanks for your response. I am trying to create player NPCs that function just like a real player but I am able to modify to open GUIs, set their AI goals etc.

 

I tried creating a custom entity and setting the model as a player, however there is no player model in the minecraft render manager that supports Forge's IRenderFactory. I tried getting the entity to at least show by setting it to a rabbit but that just created an invisible entity with a shadow.

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4 hours ago, diesieben07 said:

That's not what FakePlayer is for. You need to write your own entity.

An NPC player functions nothing like a real player, most of the special functionality of a player is that it's controlled by a human, not AI.

Please explain how to create my own entity then. As I stated, I tried this and it simply refuses to render via Minecraft's default renders.

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31 minutes ago, SamB440 said:

I tried this and it simply refuses to render via Minecraft's default renders.

Show what you tried.

VANILLA MINECRAFT CLASSES ARE THE BEST RESOURCES WHEN MODDING

I will be posting 1.15.2 modding tutorials on this channel. If you want to be notified of it do the normal YouTube stuff like subscribing, ect.

Forge and vanilla BlockState generator.

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22 hours ago, Animefan8888 said:

Show what you tried.

 

I created a class extending CreatureEntity:

public class FarmerEntity extends CreatureEntity {

	public FarmerEntity(EntityType<? extends CreatureEntity> type, World worldIn) {
		super(type, worldIn);
	}

	@Override
	protected void registerGoals() {
		this.goalSelector.addGoal(1, new LookAtGoal(this, PlayerEntity.class, 10.0F));
		this.goalSelector.addGoal(2, new LookRandomlyGoal(this));
		applyEntityAI();
	}


	protected void applyEntityAI() {
		this.goalSelector.addGoal(1, new SwimGoal(this));
		this.goalSelector.addGoal(2, new WaterAvoidingRandomWalkingGoal(this, 1.0D));
	}

	@Override
	protected void registerAttributes() {
		super.registerAttributes();
		this.getAttribute(SharedMonsterAttributes.MAX_HEALTH).setBaseValue(20.0D);
	}
}

I then registered entity types:

public class EntityTypes {
	
	public static final EntityType<FarmerEntity> FARMER = null;

	@Mod.EventBusSubscriber(modid = Utils.MODID, bus = Bus.MOD)
	public static class RegistrationHandler {
		/**
		 * Register this mod's {@link Entity} types.
		 *
		 * @param event The event
		 */
		@SubscribeEvent
		public static void registerEntities(final RegistryEvent.Register<EntityType<?>> event) {
			final EntityType<FarmerEntity> farmer = build(
					"farmer",
					EntityType.Builder.<FarmerEntity>create((FarmerEntity::new), EntityClassification.MISC)
							.size(0.5f, 0.5f)
			);

			event.getRegistry().registerAll(
					farmer
			);
		}

		/**
		 * Build an {@link EntityType} from a {@link EntityType.Builder} using the specified name.
		 *
		 * @param name    The entity type name
		 * @param builder The entity type builder to build
		 * @return The built entity type
		 */
		private static <T extends Entity> EntityType<T> build(final String name, final EntityType.Builder<T> builder) {
			final ResourceLocation registryName = new ResourceLocation(Utils.MODID, name);

			final EntityType<T> entityType = builder
					.build(registryName.toString());

			entityType.setRegistryName(registryName);

			return entityType;
		}
	}
}

And finally made a class implementing IRenderFactory:

public class RenderFarmerEntity implements IRenderFactory<FarmerEntity> {

	@Override
	public EntityRenderer<? super FarmerEntity> createRenderFor(EntityRendererManager manager) {
		return Minecraft.getInstance().getRenderManager().getRenderer(RabbitEntity.class);
	}
}

 

 

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1 hour ago, SamB440 said:

But I want to use Minecraft's player model lol. I don't fancy rewriting that.

You can use the PlayerModel from Minecraft and even the BipedRenderer, but your are limited in what you can do with that.

 

I did just test it, you can use

RenderingRegistry.registerEntityRenderingHandler(FarmerEntity.class, (EntityRendererManager rendererManager) -> new BipedRenderer<>(rendererManager, new PlayerModel(modelSize, smallArms), shadowSize));

to register the BipedRenderer with the PlayerModel to your Entity.

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19 hours ago, Keitaro said:

You can use the PlayerModel from Minecraft and even the BipedRenderer, but your are limited in what you can do with that.

 

I did just test it, you can use


RenderingRegistry.registerEntityRenderingHandler(FarmerEntity.class, (EntityRendererManager rendererManager) -> new BipedRenderer<>(rendererManager, new PlayerModel(modelSize, smallArms), shadowSize));

to register the BipedRenderer with the PlayerModel to your Entity.

You are a saviour! Thank you so much.

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