What does the Butchery Add Mobs Data Pack actually do?
It links animals from other mods to Butchery's meat system. When you kill a linked modded creature, it drops the proper Butchery carcass or corpse just like a vanilla animal would.
Do I still need the main Butchery mod installed?
Yes. This data pack only extends Butchery, so the carcasses, corpses and meat processing all come from the main mod. Without it, the pack has no system to link creatures into.
Where does the data pack go?
It goes inside your world's save folder as a data pack, kept as the zip file. You edit the animal lists inside that zip rather than placing loose files elsewhere.
How do I make a modded animal drop a Butchery carcass?
Open the zip in your world save folder and find the text file for the vanilla animal whose carcass you want dropped, such as the chicken. Type the modded animal's name into the list, save the file, and load your world.
What name do I type for the modded animal?
Use the creature's full in-game ID, which is the mod's namespace followed by the creature name. You can find it by typing a /summon command in chat and reading the autocomplete suggestions, or by checking the ID in a mob-info or JEI-style overlay. Typos or using the display name instead of the ID will stop the link from working.
Can I use this with TerraFirmaCraft or Alex's Mobs?
Yes, it is designed for big overhauls and creature mods like those. Add each creature's ID to the list of whichever vanilla animal's carcass makes the most sense for it.
Why does my modded animal's carcass look like a vanilla animal?
That's intended. The dropped carcass keeps the vanilla model and texture of the animal file you added it to, even if the modded creature looks completely different.
I added my animal to the list but it still drops nothing. What's wrong?
Check that the creature ID is spelled exactly right and that your edit was actually saved back into the zip. Some archive tools only edit a temporary copy, so the zip itself never changes. Also confirm the zip is still in the world save folder, then reload the world so the new list is read.
Does this work on a multiplayer server?
Data packs run on the world, so on a server the edited zip needs to be in the server's world save folder. Editing a copy on your own computer won't change server drops.
Will this data pack hurt performance?
No noticeable impact is expected. It's just simple text lists telling Butchery which extra creatures count as which animal, so it adds no new models or heavy processing.