✓ Two crowns ✓ Same mass, different density ✓ Vertical slider ✓ Slider works ✓ Slider controls crowns ✓ Slider direction correct ✓ Full slider range — Fall animation ✓ Water displacement ✓ Rising water level ✓ Splash effects ✓ Physics correct ✓ Live mass value ✓ Live volume value ✓ Live density value ✓ Live displaced water ✓ Gilded displaces more ✓ Heureka animation ✓ No external deps ✓ Light bg / dark text ✓ Self-contained HTML
Physics values and dual-crown ASCII rendering are solid, but the "fall animation" is absent (crowns teleport via slider with no tween), and the splash effect is randomized per render-frame rather than being a true event-triggered animation.
Physics values and dual-crown ASCII rendering are solid, but the "fall animation" is absent (crowns teleport via slider with no tween), and the splash effect is randomized per render-frame rather than being a true event-triggered animation.