Procedural mountain sheds rain into streams and lakes
155 views · 0 likes · 0 saves · 0 reposts · Posted Sep 24, 2026 · 0:30 · 3d scenes
OUR NOTEA 3D water simulation in TypeScript and Three.js where rain on a procedural mountain carves streams and fills lakes, built from an empty repo in about 21 minutes with one prompt and 23 of 23 tests passing.
Claude Opus 5.5 on our AI coding benchmark: build a fully autonomous 3D water simulation from an empty repo - procedural mountains, rain, streams, lakes. TypeScript + Three.js, no physics engine.
One prompt, zero corrections, ~21 min. 23/23 tests green.
https://github.com/AiondaDotCom/ai-sim-benchmarkTHE PROMPT
Partial prompt — the creator shared only part of it.
Claude Opus 5.5 on our AI coding benchmark: build a fully autonomous 3D water simulation from an empty repo - procedural mountains, rain, streams, lakes. TypeScript + Three.js, no physics engine.
One prompt, zero corrections, ~21 min. 23/23 tests green.
https://github.com/AiondaDotCom/ai-sim-benchmarkMAKE ONE LIKE THIS
Three steps, using what the creators in this index used.- 1 · Copy the prompt
Use the prompt above as your starting point, then change the subject and the style.
HOW OTHERS WROTE THEIRS → - 2 · Direct it like an editor
- Ask for one self-contained HTML file on a fixed 1920×1080 stage.
- Link this video as the reference for pacing and style.
- Send two or three rounds of specific notes.
- 3 · Render it to MP4
A short piece like this can be screen-recorded, or captured frame by frame for exact timing.
TURN AN HTML ANIMATION INTO AN MP4 →
The creator didn't name their tools. Most videos like this are HTML, canvas or SVG animation written by Claude and screen-recorded or rendered to MP4 — how that works.
Indexed Sep 30, 2026, 2:01 PM · Views as of indexing. Video and post © their creator.