Spine 4.2 monster set built by AI chat in Riggy tool

The write-up describes starting from a single layered PSD and having Riggy's chat produce a whole combat set — idle, attack, hit and death — for an RPG monster, with rig and animation both AI-generated. What separates the smooth attack from the difficult death, according to the developer, is not the model but the instruction: describing the length of the motion, which parts move and which stay still, the order of the action, how the rest of the body participates, and the game-side event needed at the moment of impact.

For fixes, the developer found that vague requests kept failing and concrete ones worked. Telling the model what happens at which second and in which direction — for example that at 0.5–0.7 s the feet lift and the club should stay low, or that from 1.0 s to the end the club should be laid flat by 1.5 s — corrected problems in one pass, because the model assembles poses numerically. Explicitly approving animations already accepted also protects them from later edits, though changes to the rig itself, such as which bone a part hangs from or the draw order, affect every animation and force a full re-check.

The article also flags rig problems that exist with or without AI: a belt painted on the torso but parented to the hip bone stayed behind when the torso leaned forward, arm draw order caused the front arm to slide behind the body, and the ground line was about 70 px above the bottom edge of the image, so instructions based on the image edge pushed the feet into the floor. Small adjustments such as re-parenting bones or nudging a key pose were faster and free with the mouse in Motion mode. Whether AI chat carries more of this work forward is likely to depend on getting the rig right first and on how precisely each motion is described.