✓ 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
Highly complete ASCII-art implementation with correct physics (Au 19.3, alloy 12.1 g/cm³, same 1000 g mass), live data panel, splash effects, and a polished Heureka animation, but the vertical slider direction is inverted (slider value 0 at top maps to crowns in air, yet the slider's native "top = max" behavior is not corrected, placing bottom=0/air rather than bottom=water).
7,742 output tokens · claude-opus-4-6 · end_turn
Highly complete ASCII-art implementation with correct physics (Au 19.3, alloy 12.1 g/cm³, same 1000 g mass), live data panel, splash effects, and a polished Heureka animation, but the vertical slider direction is inverted (slider value 0 at top maps to crowns in air, yet the slider's native "top = max" behavior is not corrected, placing bottom=0/air rather than bottom=water).