Compatibility
Minecraft: Java Edition
26.1
1.21–1.21.4
1.20.x
1.19.4
Platforms
Supported environments
Creators
Details
Changelog
Allium Beta 0.5.0
This update is a complete overhaul from the prior version. Much of the fundamental behaviors remains the same, but the engine behind those behaviors has been changed. Furthermore most all of the APIs have been overhauled in one way or another. For specific documentation please see the Allium Docs.
Major items have been given a title in bold.
Features
- Mixin Support: Lua developers can now write Java mixins in Lua. While it is possible for all mixin injector types to be created, support in the API has been primarily given to the following annotations:
- @Inject
- @ModifyArg
- @ModifyArgs
- @ModifyExpressionValue
- @ModifyReturnValue
- @WrapMethod
- @Definition
- @Expression
- @Cancellable
- @Local
- @Share
- Class Builder Scope: The methods provided to a class being built now have access to private methods on themselves, and protected methods on parent classes via the
selfkeyword. - Java Library Additions:
- Java primitive types can now be accessed through the
javalibrary using the primitive name (ex.java.boolean) - Add method
java.callWith(). Forces a method invocation with the provided parameter type list, instead of inferring them from the parameters. - Add method
java.coerce(). Coerces an object that inherits from eitherCollectionorMapinto a table. - Add method
java.wrap(). Forcibly wraps a primitive value in one of the Java wrapper classes. - Add method
java.throw(). Throws a provided exception.
- Java primitive types can now be accessed through the
- Add the
mixinmanifest entrypoint. Used to declare mixins before the game launches. - Add method
script:registerReloadable(), expects arequire-like path to a file that will be executed whenever the script'sreloadmethod is called. - The
__lenmetamethod is now provided on all objects where a Java.size()method or.lengthfield is present. This means that any object with either can now have their size inspected with the#prefix.
Changes
- Class Builder Overhaul: The class builder API is now a factory pattern, where methods get chained together to build out the class. At the very end a table matching the specified class methods is supplied.
- The
alliumandjavaAPIs have been moved from Bouquet to here. - Java arrays no longer unidirectionally get converted to tables and instead are given a metatable that wraps the array in table-like functionality.
- The game environment that was previously accessed with
package.environmentis now accessed with theallium.environment()function. - The
staticmanifest entrypoint has been renamed tomain - A wider range of java specific utility types are now supported during coercion.
- Error messages are substantially more detailed.
Removals
- Mapping Support Deprecation: Due to the removal of obfuscation and the overwhelming challenge of having to convert between both mappings and languages, going forward Allium now exclusively interprets scripts using Mojang's naming scheme. The
"mapping"key in script'smanifest.jsonis no longer supported. - Extension Support Deprecation: Everything that could possibly be done with an extension can be done by creating a dedicated class reserved for Allium scripts. The only major loss here is support for custom globals, but it's bad practice to pollute the global table anyways.
- The
dynamicentrypoint has been removed in favor of usingscript:registerReloadable().
Files
Metadata
Release channel
BetaVersion number
0.5.0Loaders
Game versions
26.1-snapshot-1–26.1-rc-3, 26.1Environment
Client and server, optional on both
Downloads
12Publication date
March 24, 2026 at 2:58 PMPublisher
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