✓ 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
Solid ASCII-art demo with correct physics (Au ρ=19.3, gilded ρ=13.0, same 1000 g mass) and working vertical slider (top=air, bottom=water), but crown movement is a coarse integer-row jump with no smooth fall animation, and the grid is reconstructed twice per render() due to a code bug that resets the grid mid-function.
7,888 output tokens · claude-opus-4-6 · end_turn
Solid ASCII-art demo with correct physics (Au ρ=19.3, gilded ρ=13.0, same 1000 g mass) and working vertical slider (top=air, bottom=water), but crown movement is a coarse integer-row jump with no smooth fall animation, and the grid is reconstructed twice per render() due to a code bug that resets the grid mid-function.