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Error Registering Block Entity


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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=

    public static void register(IEventBus 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!


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Posted (edited)

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 by warjort
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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.

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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. 

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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.

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