[1.15.2] DeferredRegister of BlockItems

[WildTan]

For now I'm using a crutch:

    @SubscribeEvent
    public static void onRegisterItems(final RegistryEvent.Register<Item> event)
    {
        final IForgeRegistry<Item> registry = event.getRegistry();
        PhoenixBlocks.BLOCKS.getEntries().stream()
                .map(RegistryObject::get)
                .filter(block -> !(block instanceof INonItem))
                .filter(block -> !(block instanceof FlowingFluidBlock))
                .forEach(block ->
                {
                    final Item.Properties prop = new Item.Properties().group(Phoenix.PHOENIX);
                    final BlockItem blockItem = new BlockItem(block, prop);
                    blockItem.setRegistryName(block.getRegistryName());
                    registry.register(blockItem);
                });
    }

It is not beautiful. How i can do it by DeferredRegister? 

Edited August 2, 2020 by WildTan

[Choonster]

You can register BlockItems with DeferredRegister in the same way as normal Items. Since Blocks are registered before Items, just call RegistryObject#get on your RegistryObject<Block> in the Supplier.

 

I use these two utility methods to automatically register a BlockItem with the Block using DeferredRegister. RegistryUtil.getRequiredRegistryEntry just returns the registry entry from a RegistryObject or throws an exception if it's not present; but this isn't required in 1.15+ because RegistryObject#get already does this (it didn't in 1.14).

Edited August 2, 2020 by Choonster