Error Registering Block Entity

[Tadpoling]

Hi,

Im trying to Create a simple block entity, following a guide, and for some reason there's an error registering it(with the deferred register)

Here is my MobRepellentBlockEntity Class

package com.Tadpolling.tutorialmod.block.entity;

import net.minecraft.core.BlockPos;
import net.minecraft.world.level.block.entity.BlockEntity;
import net.minecraft.world.level.block.entity.BlockEntityType;
import net.minecraft.world.level.block.state.BlockState;


public class MobRepellentBlockEntity  extends BlockEntity {
    public MobRepellentBlockEntity(BlockEntityType<?> pType, BlockPos pPos, BlockState pState) {
        super(pType, pPos, pState);
    }

}

Here is my ModBlockEntities Class where I have my deferred register

 

package com.Tadpolling.tutorialmod.block.entity;

import com.Tadpolling.tutorialmod.TutorialMod;
import com.Tadpolling.tutorialmod.block.ModBlocks;
import net.minecraft.world.level.block.entity.BlockEntityType;
import net.minecraftforge.eventbus.api.IEventBus;
import net.minecraftforge.registries.DeferredRegister;
import net.minecraftforge.registries.ForgeRegistries;
import net.minecraftforge.registries.RegistryObject;

public class ModBlockEntities {
    public static final DeferredRegister<BlockEntityType<?>> BLOCK_ENTITIES=
            DeferredRegister.create(ForgeRegistries.BLOCK_ENTITIES, TutorialMod.MOD_ID);
    
    public static final RegistryObject<BlockEntityType<MobRepellentBlockEntity>> MOB_REPPLLENT_BLOCK_ENTITY=
            BLOCK_ENTITIES.register("mob_repellent_block_entity",()->
                    BlockEntityType.Builder.of(MobRepellentBlockEntity::new,
                            ModBlocks.MOB_REPELLENT_BLOCK.get()).build(null));

    public static void register(IEventBus eventBus)
    {
        BLOCK_ENTITIES.register(eventBus);
    }
}

On the Line of the of the "BlockEntityType.Builder.of" function call, it gives me an error on the given parameters of the function 'of' and the error given is:

"Cannot resolve method 'of(<method reference> , Block)'

In case it's relevant the Mob Repellent Block does exist and works(I've tested it). I've looked at a few guides so far and they all do the same thing.

Thank you for your time!

 

[warjort]

You are probably copying example code from the wrong version of minecraft, things like this can change between versions.

MobRepellentBlockEntity::new passes a reference to your constuctor, which must match the signature of BlockEntityType.BlockEntitySupplier  - the parameter type used by of()

In 1.19 that is (BlockPos, BlockState) - see the create() method of this functional interface.

Your constructor has signature (BlockEntityType, BlockPos, BlockState), which is therefore wrong.

Edited July 6, 2022 by warjort

[warjort]

MobRepellentBlockEntity::new is just syntatic sugar.

 

For you it is kind of the same as the lambda expression:

(blockPos, blockState) -> new MobRepellentBlockEntity(xxxx, blockPos, BlockState)

So you can see your problem is you don't have an xxxx to reference, it should not be there.

[Tadpoling]

Okay so let me start off by saying Your explanation was excellent!

My only issue is that im on Version 1.18.2, and i double and triple checked that the Constructor for a Block Entity requires a BlockEntityType parameter.

So I'm confused as to why it shouldn't be there? Because we need to call the constructor for the class we're inheriting from and all.

And I have no idea if this is important but the guides are both on 1.18 or 1.18.2. 

[warjort]

Nope, look at BlockEntityType.BlockEntitySupplier it is create(BlockPos, BlockState) in 1.18.2

Some vanilla blocks entities do have a protected constuctor with a block entity type parameter, this is intended for use by subclasses not for actual construction.

[Tadpoling]

Okay, yeah I got it to work, You were awesome thanks a bunch!