Is it possible? I'd been looking around and found lots of info about attaching a custom BlockEntity to a custom Block, but nothing about attatching it to any kind of vanilla block that exists in the world.  This is the register code for a custom Block.

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public static final RegistryObject<BlockEntityType<MyBE>> MY_BE = REGISTER.register("mybe", () -> BlockEntityType.Builder.of(MyBE::new, MyBlock.get()).build(null));

According to Forge documentation, I should register my entity as:

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public static final RegistryObject<BlockEntityType<MyBE>> MY_BE = REGISTER.register("mybe", () -> BlockEntityType.Builder.of(MyBE::new, validBlocks).build(null));

validBlocks in this case are all blocks. Do I have to create a string listing all the blocks? I hope there is a more beautiful and clean way of doing it :).

you can use this as valid Block Set:

Registry.BLOCK.stream().collect(Collectors.toSet())

Note: I don't know if what you're trying to do works at all and whether the code part is working in the registry

Edited March 11, 20223 yr by Luis_ST

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What are you trying to achieve?

Not much. I was just making code tests to learn a little bit more about how BlockEntities work. Thanks for your help