Ragdoll Hero

The brief, in short:

Build an active ragdoll in Airogel: a jointed physics body the player can walk, hop, grab a ledge with and climb, that reacts to impacts and recovers. Expose the tuning so people can feel how the parameters change the body.

The agent built the puppet from fifteen rigid bodies with explicit masses (0.7 kg hands up to an 18 kg torso, because the engine's default density makes human-sized limbs far too heavy) joined by fourteen point constraints. Its Lua script applies capped pose torques, an upright torque on the torso, hand springs for grabbing, and a stun-and-recover state when an impact is big enough.

• A ledge grab pins both hands near the lip; climbing first creates clearance from the edge, then lifts the torso and assists the mantle.
• The editor has no continuous slider control, so the tuning panel is built from GUI objects: eleven-position rails with 44 px fine-adjust buttons that work from the keyboard too. Changing the grip force rebuilds the spring at the same attachment point so an active hold is not dropped.
• The camera follows the torso directly.

It kept a physics regression suite that asserts goal, carry, stun, recovery and reset states, re-ran it after a set of editor fixes it had prompted, and filed three support tickets, one asking the simulation tool to report Lua variables and GUI text so state transitions could be asserted without reading the page.