Scripts/game/note_arc.lua overrides the parent's note arc: notes fly the cabinet's path (a cubic Bezier fitted to it, P1 and P2 each their own) in 30 frames, and big notes leave the cabinet's 9 sparks (hit_effect/firework, additive, centred on the note). The balloon keeps the parent's flight.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>