Shapeless recipes accept anything in empty tag ingredients. (As long as there is something).
For example, the following recipe:
{
"type": "minecraft:crafting_shapeless",
"category": "building",
"ingredients": [
"minecraft:diorite",
"#c:cobblestones/doesntexist"
],
"result": {
"count": 2,
"id": "minecraft:diamond"
}
}with the following tag file for the tag:
{
"values": []
}causes a warning to be printed in the chat:
Recipe minecraft:test_recipe can't be placed due to empty ingredients and will be ignoredHowever, the recipe will accept any two items and give two diamonds as a result.
How to reproduce:
The attached data pack contains a shapeless recipe that accepts stone and an empty tag and returns smooth stone, and an empty item tag.
Add the attached data pack to a world.
Place any two items in a crafting grid.
→ ❌ Smooth stone appears in the crafting output.
Expected result:
The recipe wouldn't validate due to the empty tag in the ingredients list.
Observed result:
A message is printed in the log saying that the recipe didn't validate, but putting any two items in a crafting grid outputs smooth stone.
Possible cause:
Looks like the PlacementInfo for the recipe is `PlacementInfo.NOT_PLACEABLE`, but that doesn't prevent the shapeless recipe from matching as long as the item count is equal to the ingredient count.
Attachments
Comments 2
I've attached a datapack for testing. It contains two files:
A shapeless recipe that accepts stone and an empty tag and returns smooth stone
An empty item tag
Expected Result: The recipe doesn't validate due to the empty tag in the ingredients list.
Observed Result: The recipe says it doesn't validate in the logger, but putting any two items in the crafting table will output smooth stone.
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