[1.19] Set Compund Tag of Block Item

[J3ramy]

Hey guys,

 

I want to save the position of any right clicked block inside the main held block item and copy it to the block entity when the block item gets placed

Is that possible?

 

Thanks

Edited August 19, 2023 by J3ramy

[warjort]

Create your own subclass of BlockItem and override Item.useOn() to store the "BlockPos/Level" in the ItemStack's CompoundTag.

See BlockItem.BLOCK_ENTITY_TAG and its usage in vanilla for automatic copying of BlockItem data into the BlockEntity.

 

NOTE: If you want the opposite, i.e. BlockEntity retains this data when it is broken into a BlockItem, you need to add this in your LootTable.

e.g. The BeeHive does this if you have silk touch:

https://github.com/misode/mcmeta/blob/853cf38d9bc78296e4fb87c8bd41b47b3757e99d/data/minecraft/loot_tables/blocks/beehive.json#L27

[J3ramy]

Thank you!

How do I tell the actual block that this block item subclass should be applied. I haven't found any method to overwrite inside the block class

Edited August 19, 2023 by J3ramy

[warjort]

The same as any other block with an item.

Your BlockItem constructor should forward the "Block" parameter to the BlockItem superclass constructor.

Minecraft will do the rest of the book keeping to tie them together.

See BedItem or any other subclass of BlockItem

 

If you want to understand how it really works ,see BlockItem.registerBlocks() and follow the rabbit hole.