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[1.16.4] Question on implementing recipes based on NBT data

Posted February 25, 20214 yr

I have a few questions about recipes, or my options for what I want, and I want to ask them before I start implementing code.

I have a block that holds experience, and there is an input and output. Currently I just have a book that holds experience as an NBT tag.

But in the future I want to fill a bottle with experience for other uses. Right now I look to see if the tag is present and then take the exp from it, but this doesn't work for what I want in the future.

Should I make a Recipe type for this block -- but my question here is how can I use the nbt data of the item and output the item with no tag?

Sorry if I don't make much sense here. Basically I have an item with nbt data that is drawn out of the item and into the block, but I want to "future-proof" it so I don't have any problems in next time.

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February 26, 20214 yr

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I was thinking, have the Recipe type and put the recipe for the item as (Item Input) -> (Item Output), and put the timeTaken as some arbitrary number like 0/60. Then when I actually put the item in, it checks if it has the NBT tag and then give it a custom timeTaken based on how full it is. That way a half full item won't take as long as a completely full item. And if the item doesnt have the tag, then it will check if there is a recipe that uses it and it will have the correct timeTaken.

I don't know if this is the best way tbh, this is just me thinking based on what I know so far. If anybody has a better way then I'd love to hear it.

Thank you.

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Hey dawg!

I think I might be able to help you out with your issue here. I say might because I don't know about 1.16.x or any later version, but I know how to do this kind of thing for 1.12.2 forge. Basically, in the pre-init or init (I don't really remember which one) you just gotta'

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First, it's important to note that the game stores its spawn data for structures in, well, the Structures class. Here, the game initializes an instance of each Structure class and registers them with the BootstrapContext using its bootstrap function. Each instance of a Structure class is registered with a StructureSettings class as an argument. One of the arguments, the one that you're probably going to be particularly interested in here, would be the spawnOverrides argument. For this argument, the game uses a Map between MOB_CATEGORIES and StructureSpawnOverride. StructureSpawnOverride is essentially the juice of it here. It contains almost everything you would need to control how your custom mob spawns in Pillager Outposts. Now, if you want to change how the Structure class for the pillager outposts is registered with the BootstrapContext in the bootstrap function, you're going to want to change where the function's caller gets the function and replace it with your own custom version of this function. How might you do this? This is where it gets a little tricky. The bootstrap function for the structures class is referenced in VanillaRegistries.BUILDER. However, unfortunately, this field is private and final, so you can't directly change it with reflections, but you can still access it with reflections. Now the VanillaRegistries.BUILDER field is of the type RegistrySetBuilder, which uses a private final field "entires", which is set as a List<RegistrySetBuilder.RegistryStub<?>> type. So here, you could use reflections to access this list field and remove the entry for the structures bootstrap. Then you might be able to create your own structures class and add change the bootstrap function to reflect the changes you wish. Then finally, simply re-add the Structure entry that you made to the list, and you should be completely done! Keep in mind, I haven't actually tested this, so I'm not sure if it would actually work, and even if it did work it's really unorthodox, so I would recommend trying this next idea.

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By Jackson Perr · 11 hours ago11 hr

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[1.16.4] Question on implementing recipes based on NBT data

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