I Made Spider-Man Swing Without Animating a Single Frame

I built a Spider-Man swing effect that runs entirely in the browser, with no pre-rendered animation, no sprite sheets, and no video files. Instead, a small AI agent loop generates motion parameters in real time. Here’s how it works, with runnable Python code you can adapt. Animation is expensive. Traditional 2D or 3D animation requires keyframes, interpolation curves, and often a rendering pipeline.