Nanorobot Swarm: Self-Healing Car Body Panel (2D)

A car door panel is viewed from directly above, with a swarm of nanorobots patrolling just beneath its coating. Click or drag on the panel to scratch and dent it — the damage is tracked on a fine grid and painted live onto the panel. Nearby robots sense local damage against an adjustable threshold, activate, steer toward the worst spots in range, and heal them at a configurable repair rate, exactly as a distributed nanosensor-and-repair network for vehicle structural health would behave. Density, sensitivity and repair-rate sliders let you explore the trade-off between swarm size, response speed and energy spent, live readouts track panel health, active robots, impact events and cumulative repair energy, and you can scroll to zoom in on the damage field or shift+drag to pan around it.