Craft-Animation

Craft-Animation provides a reusable animation runtime. Clips are described in JSON as keyframes with easing, and a controller loads, plays, stops, loops and changes the speed of a clip. Animation subjects are tracked at runtime, each with its own state under an AnimationSubjectKey, so several objects can animate at once without sharing state.

The library is meant for other mods rather than for direct play. A content mod that adds weapons, mobs or gameplay systems can call it to animate its own models instead of building a separate system. Its targets cover living entities, tile-based machinery and floating display models, and the included systems handle JSON loading and example resources for reference.

The mod accepts two input paths: a clip in the author's own format, or existing player animation data reused directly. Finished animations can be injected into the vanilla render path, so a model does not need a custom renderer to show them. Forge is the only loader, and the code is open source under the GNU Lesser General Public License v3.0 only. Game versions 1.20.1 – 26.1.2 have files, with the latest Forge build targeting 26.1.2.