AzureLib

AzureLib is an animation and rendering engine for Minecraft mods. It started as a fork of GeckoLib 4.x and has since grown into its own library, with a reworked rendering pipeline, an extended Molang runtime, per-bone hitboxes, procedural animation tools and its own Blockbench plugin. If you've seen a creature in a modpack that crawls, lunges, bursts out of the ground or swings a weapon with real weight, there's a good chance AzureLib is animating it.

Players: you don't need to do anything with this mod. Install it if a mod you use requires it.

Features

Animation

• Keyframe animation from Blockbench: rotation, position and scale on any bone, for entities, items, armor and block entities.
• 30+ easing functions plus per-keyframe interpolation.
  
  _{Easing visualization by noisecrime}
• Multiple controllers at once: run a walk cycle, an attack and a head-look together without them fighting each other.
• Sound, particle and custom event keyframes: trigger effects and your own code at exact moments in an animation.
• Molang support extended toward Bedrock parity: strings, arrays, for_each, this, and many additional entity queries.

Procedural & Gameplay Tools

• Multi-hitbox system: define hitboxes per bone that follow your animated model, so a long tail or a burrowing worm can be hit where it actually is.
  
• Bone transform & procedural pose API: drive bones from code on top of keyframed animation, including IK and bone constraints, spring-bone secondary motion, bone sockets/attachments, and 1D/2D blend spaces.
  
• Morph mod compatibility with Walkers and ReMorphed, so morphed players play your mob's animations.

Performance

• Reduced per-frame allocations and object pooling in the animation pipeline.
• Binary-search keyframe lookup for long animations.
• Optional bone and animation LOD to keep crowded scenes smooth (opt-in per renderer).

Tooling

• AzureLib Blockbench plugin with exports matched to the library, including baking IK into keyframes.
  
• Examples mod showing entities, items, armor and block entities working end to end.

Made with AzureLib

A few of the mods using AzureLib (see the Gallery tab for more):

• Arachnids
• Aftershock
• JCRAFT: Eyes of Ender (JoJo)
• Legends: Superheroes Unlimited
• Discerning The Eldritch
• Celestial Exploration
• Helios Divinity

Using AzureLib in your mod? Let me know on Discord and I'll add it here.

Supported Versions

| Minecraft | Loaders | AzureLib |
|---|---|---|
| 26.3 | NeoForge / Fabric | 4.1.x |
| 1.21.1 | NeoForge / Fabric | 3.2.x |
| 1.20.1 | Forge / Fabric | 3.2.x |
| 1.18.2 | Forge / Fabric | 3.3.x |
| 1.12.2 | Forge | 1.1.x |
| 1.7.10 | Forge | 1.1.x |
| Beta 1.7.3 | Babric / Ornithe | 1.1.x |

For Developers

Full setup for each loader, plus guides for entities, items, armor and block entities and migrating from GeckoLib, is on the AzureLib wiki.

Support: AzureLib is maintained independently. Questions and bug reports are welcome on Discord or the issue tracker, but I can only help with AzureLib, not GeckoLib.