# Use procedural animation [Back to Use gameplay actions](https://rustic-game-engine.pages.dev/markdown/guides/gameplay-actions.md). `Animation.ik(root, middle, tip, target, options?)` solves a two-bone chain in world space. `options` supplies `pole`, `weight`, `duration` and `easing`. The solver clamps unreachable targets and preserves segment lengths; joints must form a direct root/middle/tip parent chain. `footPlacement` uses the same solver. `headTracking` and `lookAt` turn toward a target; update the target through your controller when needed. `recoil` eases a rotation out and back. Native bindings provide typed parameters rather than dynamic option tables.