LIVE Feed the flies — the real simulator, running now
Two actual MuJoCo Drosophila walkers, streamed frame-by-frame from a running simulation. Click the arena: the food patch moves there and both flies re-orient with the M4-verified antennal chemotaxis, walk over, and feed. Energy drains, they get hungry again. You are the ecosystem's only food supply.
Launch a live sim
Option A — your own machine (fastest, fully interactive):
docker run --rm -p 7860:7860 -v $PWD/data:/app/data -e MUJOCO_GL=egl fly-sim:space python -m flysim.live_colony
then use http://localhost:7860 above.
Option B — Hugging Face compute (slow-motion, shareable):
python -m flysim.jobs --live-colony --timeout 3600
prints https://<job-id>--7860.hf.jobs — paste it above. Note: HF job URLs
require the viewer to be logged in to a Hugging Face account.
What am I looking at? Real physics at 10 kHz (slowed to watchable speed), the same walkers, energy law (0.02/s drain, 0.25/s feeding) and odor sensing verified in milestones M1–M4. The flies cannot see the food — they smell the gradient across their two antennae and pulse-turn until aligned. Sated flies loiter in a slow orbit near the food; hunger pulls them back. Starvation is real: clicks farther than ~35 mm may cost a fly its life — the reset colony button in the viewer respawns them. Courtship encounters are logged when they cross paths. Back to the dashboard · trajectory player.