Software Engineer. React Native, Expo, Tauri, GPUI. Making: keyameleon.app/ | redacted | redacted
Italy
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6-7 years ago I had to build a realistic simulator for naval defense systems.
The ocean was the hardest part for sure.
Now it'd take me a few prompts.
This entire ocean is a 61 KB HTML file.
Built with Claude Code + Opus 5.5 in about 30 minutes, according to its creator.
It runs in the browser using WebGPU: FFT waves, whitecaps, sun glitter, a physically based sunset sky with clouds, and a free-flying camera. No game engine or rendering library.
Claude rendered screenshots in headless Chrome, then had separate subagents critique them. The creator gave feedback along the way, mainly on the clouds.
The 61 KB build is minified and self-contained. Download it, open it in Chrome with WebGPU support, and explore with WASD.
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Ok, so this is what Opus 5.5 did:
- searched for and pulled data from somewhere
- ran a full simulation with real vehicles for both the before and after scenarios, using Eclipse SUMO
- created an interactive 3D map
- added POIs, buildings, and traffic lights (!!!)
- you can watch traffic in "real time" throughout the day (weekdays and weekends)
- you can follow vehicles (!!!)
idk if the data is accurate, but it's cool
I'll leave the link in the comments if you want to play with it (if I don't break it before)
So I'm really really convinced that my city’s administration screwed up a roundabout and made traffic even worse.
I asked Claude to check. Now is running Eclipse SUMO simulations and my Mac is frying.
lyk
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