A ceiling AI
A hanging, physics-driven character that tracks you with its eye.
01 / What it was
A large AI hanging from the lab ceiling, about 7.5 blocks tall, in the style of a well-known video game character. It began on the 28 October stream, from the same pattern as the duck.
No trained policy exists for a body like this, so its behaviour is scripted on top of real physics. Its persona, written in our own words, is a dry lab supervisor who calls the player "test subject".
02 / How it worked
- A chain of 13 hinge joints under gravity at 60 Hz. Gravity compensation on the arm is cut to half, so it still sways like a pendulum.
- Inverse kinematics keeps its eye on the player; tracking error was 0.8 to 4.7 degrees over 8 targets.
- Behaviours include track, angry, scan, bow, sleep, dance and an 18.6-second "spooky" routine that ends with its eye close to the player's.
- With three companions in one room, the one you are near or looking at claims the microphone, so exactly one hears each push-to-talk.
03 / What we saw
A local voice clone ran slower than real time: 9.2 seconds of speech took 15 seconds to make. Later on the same stream: "So, she is broken."
04 / Where it led
It forced the one-listener rule for several talking bodies in one room.
Sources
- Simulation notes (local, not published). ceiling AI simulation README, Oct 2026
the 'brain' is a scripted behaviour layer on top of real physics
- Stream analysis. stream transcript analysis, 28 Oct 2026
I'm rating 9.2 seconds of speech. / Took 15 seconds.
- Companion mod notes (local). RP1 mod README, Oct 2026
exactly one companion hears each push-to-talk