LootTweaker is an addon for CraftTweaker that allows loot tables to be tweaked with ZenScript files. The vanilla loot table system is limited to overriding existing loot tables or creating entirely new ones.
LootTweaker allows you to make small or large tweaks to loot tables, without having to override the table completely.
Documentation
Documentation can be found here.
FAQ
Can LootTweaker edit mob/structure/whatever loot?
LootTweaker edits loot tables. If a vanilla mechanic or mod mechanic uses loot tables, LootTweaker can edit those tables. To find out if a mod uses loot tables, check its documentation or ask the author.
Can LootTweaker create new loot tables?
Yes, this feature was implemented in version 0.2.0. See the documentation for the class loottweaker.LootTweaker for details.
Can LootTweaker automatically find and remove all of an item from loot tables?
No, though the feature is being worked on. There is no estimate for when it will be ready.
Can LootTweaker be installed only on the server?
Server-only installation is possible with LootTweaker 0.1.7 or later. However CraftTweaker requires that it is installed on both server and client.
Clients without LootTweaker installed will still be able to use LootTweaker commands, but the feedback messages will be untranslated.
Note that loot table dumps occur serverside.
Client-only installation of LootTweaker is not supported.
What happened to LootTweaker 0.0.9?
0.0.9 was extremely broken, crashing any dedicated server that used any of its functionality due to an oversight on my part while trying to improve the warning and error messages. Initially I archived it, making it unavailable for direct downloads, but still available to packs that were using it. However, I've received many requests from users for 0.0.9 because servers they are playing on use it, so I've deleted it. It's really broken, update to 0.0.10.
Important Notes:
Modifications made by LootTweaker are not detected by Just Enough Resources prior to 1.12. The cause of this issue is unknown, neither I nor the JER author could figure it out.
Only LootTweaker for 1.12 receives new features. Due to large differences in the codebase caused by the port to 1.12, I can no longer develop LootTweaker for all versions simultaneously. LootTweaker for 1.10 and 1.11 will continue to receive bugfixes however.
A Forge version of at least 14.23.5.2779 is required
Want more loot conditions/functions?
Take a look at More Loot Stuff. If the condition/function isn't already in More Loot Stuff, suggest it and I'll see what I can do.
Need help or have a question?
I have a discord server with a dedicated channel for LootTweaker. You can of course also contact me here, but I'd advise going to the discord server as you can get help there when I'm otherwise occupied.
Have a suggestion?
Create an issue hereor just comment on this project.
Nice!
rightso i've been reading this and testing with different numbers for a while now.. i'm attempting to add a single item that has a 1 in 100 chance of being dropped and found that i can get it to drop about 50 in 100 by giving it the value 1 (by replacing the 5 in the example) but anything less than 1 (0.9 for example) results in nothing dropped at all.. i see it's a relative weight so would this mean i need to add a 100 percent chance for a mob to drop air (with a value of 100) along-side the drop i wish with a value of 1? feels like there must be a better way to do this.. tbh idk if adding air would work, what is the preferred method. i have read the wiki on weight an it didn't detail this. even the given example appears to drop 100% of the time with the value of 5, i gather this is because the lower value for drops in this example is 1, which makes me wonder why the 5 is necessary given that the example has only a single entry.
hope i explain successfully here, i seem to have trouble being understood with this kind of thing
In reply to Mister_Ron:
ok i got around this by adding rotten_flesh to the zombie drops for example
In reply to Mister_Ron:
I'll get back to you on this in a bit. Currently busy with Uni.
Can I use loot tweaker to add an existing loot table to an entity that does not have one, or remove a loottable from an entity?
In reply to GalloViking:
Minecraft itself allows an entity's default loot table to be overridden. If an entity's NBT contains a string tag named DeathLootTable , the loot table identified by the value of that tag will be used instead of the default.
I know In Control! can edit entity NBT on spawn, there'll be other mods that can do it too.
In reply to Daomephsta:
Sounds great! I managed to spawn the monster with the loot table I needed with command, so it's very likely doable with In Control. I'll give it a try.
For the future plan of the availability of creating new loot tables, maybe it's not bad to just add some blank tables via this mod and allow players to edit them by creating new editable prop files and tell players to use designated name to get it work? Chocolate Quest Repoured Mod offered a way the same as described and I found the 14 blank tables (14 blank spaces available, the prop must be manually created) highly editable and these tables can be invoked anywhere. But, after all CQR is not a pure mod just for loot tables, maybe the feature can be integrated into mods just for loot table designing.
In reply to chromalumex:
I considered that solution before and rejected it. I didn't want to create an awkward solution in 1.12 and then have to reteach users a better one post-1.12 (datapacks make it easier). I've found another way to add new tables, which is much better.
In reply to chromalumex:
If you want to help test the current solution, there's a test JAR available.
https://github.com/Daomephsta/LootTweaker/releases/tag/create-table-pre1
In reply to Daomephsta:
Can't wait to try it. Thanks a lot.
Has function 'LootPool.addItemEntryJSON' been removed?
In reply to 撸意思:
Any instance in the docs where a method name contains JSON is a mistake, all method names use Json in current versions of LootTweaker.
Okay to get started, I want to edit the loot drop from a boss from the Advent of Ascension mod. So to get started, what do I need to do to just GET the loot tables so that I can start editing?
In reply to Whisperfire26:
Read the documentation.
Okay, sorry for asking but I'm a little unsure of how this mod works, so is it possible to remove a modded item completely from the loot system, which means it can't generate in the in any way, you can only obtain it by crafting it.
In reply to ReRatric:
Yes, but you'll have to manually find each entry that needs removing.
In reply to Daomephsta:
Ah, alright. Thanks!
does this only work for mobs? because the documentation doesnt say how to do this for STRUCTURE loot tables, modded and vanilla
In reply to MasterBuilder:
There aren't different kinds of loot table. You could have a chest use the creeper loot table, or a cow the dungeon loot table.