How to handle with a utility item that is meant to "contain" two other items?

[Xander402]

Hello,
I added a utility item that is meant to "consists of" two other items. It's crafted like this:

GameRegistry.addShapelessRecipe(
	new ResourceLocation("modid:itemA_and_itemB_merge"), null,
	new ItemStack(ItemInit.ITEM_A_AND_ITEM_B, 2),
	Ingredient.fromItem(ItemInit.ITEM_A),
	Ingredient.fromItem(ItemInit.ITEM_B)
);

 

But I also want to make it uncraftable without any uncrafting table mod. I tried this:

GameRegistry.addShapelessRecipe(
	new ResourceLocation("modid:itemA_and_itemB_separate"), null,
	new ItemStack(ItemInit.ITEM_A, 1),
	Ingredient.fromItem(ItemInit.ITEM_A_AND_ITEM_B
		.setContainerItem(ItemInit.ITEM_B)),
	Ingredient.fromItem(ItemInit.ITEM_A_AND_ITEM_B)
);

Where only one ITEM_A_AND_ITEM_B is meant to change to ITEM_B after grabbing ITEM_A from the crafting output.

But instead, both of the ITEM_A_AND_ITEM_B-s change to IITEM_B...:

I also just noticed that the ITEM_A_AND_ITEM_B gets changed into ITEM_B after grabbing the output in every recipe that I've added
 

---

So, how can I make it work as I want?
Thanks in advance!

Edited February 18, 2019 by Xander402
+anotherBug

[Draco18s]

37 minutes ago, Xander402 said:

Ingredient.fromItem(ItemInit.ITEM_A_AND_ITEM_B .setContainerItem(ItemInit.ITEM_B)),

Wow that's disgusting. This will permanently change the container item (until your recipe comes along and changes it again). Every other recipe using the item will return a copy. 

 

That is not how that was ever meant to be used. 

[Xander402]

7 minutes ago, Draco18s said:

That is not how that was ever meant to be used. 

Yeah, I know that too, because it simply does what you said:

7 minutes ago, Draco18s said:

This will permanently change the container item (until your recipe comes along and changes it again). Every other recipe using the item will return a copy. 

But I haven't found any other method for putting an item in the crafting grid after grabbing the output, that's just why I used setContainerItem(). I would be happy to know if there is one that would solve my problem.

Edited February 18, 2019 by Xander402

[Cadiboo]

Use JSON

[Choonster]

You'll need to create your own IRecipe implementation (optionally extending an existing one like ShapelessRecipes) that implements IRecipe#getRemainingItems to return the appropriate remaining items.

 

You'll also need an IRecipeFactory to parse your recipe from JSON, this needs to be registered in _factories.json.

 

You can see some examples of custom recipes and factories here and the _factories.json file here.