I'm making some tools and I'm using a Set of type Block to specify on what blocks the tools would work. This is all in my ItemInit class which I use to register items. See below.

private static Set<Block> EFFECTIVE_ON = Sets.newHashSet(Blocks.ANDESITE);

This works fine with minecraft blocks. Problems occur when I want to use mod blocks like this:

private static Set<Block> EFFECTIVE_ON = Sets.newHashSet(BlockInit.AMBER_BLOCK.get());

 

I get an error while loading the game, which is a NullPointerException. 

Exception message: java.lang.NullPointerException: Registry Object not present: extinctioncraft:amber_block

 

It seems my block can't be found by this set despite the block working fine in the game itself. 

 

I already tried the following without success:

- Checked if the BlockInit is registered in the main class. ( BlockInit.BLOCKS.register(bus); )

- Checked if the block is registered in the BlockInit class. 

where do you use the Set?
you need to use a Supplier when using RegistryObjects before they are initialized (or RegistryObjects)
create a Set of RegistryObjects and use RegistryObject#get when you want to use the Set

29 minutes ago, Luis_ST said:

where do you use the Set?
you need to use a Supplier when using RegistryObjects before they are initialized (or RegistryObjects)
create a Set of RegistryObjects and use RegistryObject#get when you want to use the Set

It is used when creating a ToolItem in the third argument. 

public static final RegistryObject<Item> IRON_GEO_HAMMER = ITEMS.register("iron_geo_hammer", 
			() -> new ToolItem(1, 1, ItemTier.IRON, EFFECTIVE_ON, new Item.Properties()));

Do I need to change anything here?

Edited September 22, 20213 yr by Myxtro

replace "EFFECTIVE_ON" with the Set

2 minutes ago, Luis_ST said:

replace "EFFECTIVE_ON" with the Set

EFFECTIVE_ON is the name of the set. Here's the set for refference. 

private static Set<Block> EFFECTIVE_ON = Sets.newHashSet(BlockInit.AMBER_BLOCK.get());

I could ofcourse replace EFFECTIVE_ON with the set but I would then have to repeat this for each item it is applicable to.

50 minutes ago, diesieben07 said:

You can't use the RegistryObjects from some random static initializer.

 

Is there a workaround for this? All I need is a list of mod blocks that certain mod tools can break. 

58 minutes ago, Luis_ST said:

you need to use a Supplier when using RegistryObjects before they are initialized (or RegistryObjects)
create a Set of RegistryObjects and use RegistryObject#get when you want to use the Set

try this