Games / 2026 / Live in the browser
Eye Aim Trainer
Gaze-driven target trainer built on WebGazer, with a mouse fallback for anyone without a camera.
01
The problem
Webcam gaze is noisy: at best it lands within about 4 degrees of where you look (Papoutsaki et al., IJCAI 2016), far wider than a 30 px target, and raw predictions shake every frame.
02
How I approached it
Gaze arrives through WebGazer's gaze listener, since its getCurrentPrediction() returns a Promise in version 2. A nine-dot click calibration trains its regression before play, the way WebGazer's own demo does. Each frame the point runs through a 1€ filter (Casiez et al., CHI 2012), tuned under test to cut resting jitter about 4x while still catching a jump across the arena within about 5 frames, and in gaze mode the hit circle is wider and drawn that way. Dwell on a target for 550 ms to shoot, or click or press Space.
03
The outcome
A trainer that works with the eyes or the mouse, with score, streak, level and accuracy. 9 tests cover the target engine and the filter.
Related work
Rhythm lanes hit with your body: raise your left arm, your right arm or both. MediaPipe Pose reads the arms and the keyboard works the whole time.
Pong with your index finger as the paddle, MediaPipe tracking your hand, keyboard always available.
A Tetris rebuild that follows the Tetris Guideline: 7-bag randomizer, SRS wall kicks, 500 ms lock delay and T-spin scoring.