I build software that gets close to the hardware, and tools that turn data into something you can see.

TI-89 Titanium video player

A high-frame-rate, high-detail video player that runs on my own graphing calculator. Raw video came to over 100 MB, so I designed a format that records only the pixels that change color between frames. That beat run-length encoding on both size and read speed, and brought the file down to about half a megabyte.

The built-in line routine was too slow, so I wrote a horizontal-line drawing routine in inline assembly. Timer interrupts then pace playback at a steady 32 fps, and the program loads in chunks to fit the calculator's memory.

• Source code

Strava ride heatmap

A heatmap of your cycling history that runs entirely in the browser, with no server. Drop in a Strava backup and it pulls the GPS data out of every activity and draws the routes you ride most over a dark OpenFreeMap base layer.

I first built it on Leaflet, which draws on the CPU and choked on hundreds of thousands of GPS points. Moving to deck.gl put the work on the GPU, which made recalculation about 3x faster and the map smooth to pan and zoom.

• Source code

Empty classroom search

Finds the closest open classroom to wherever you are on the UF campus. I scraped room assignments from the university's schedule database, combined them with building coordinates into GeoJSON, and wrote a Flask backend that filters to rooms free at a chosen time and sorts them by distance. The Angular frontend shows the results on a Leaflet map.

The Nolar Kind

A multiplayer survival game I built with two friends, where players hold out as long as they can against many kinds of enemies. It reached over 22,000 players and a rating above 90%.

I wrote most of the enemy AI. Because the map can be destroyed, I generated my own navigation mesh with raycasting and ran A* pathfinding over it, adding and removing nodes as areas collapse or open up. Lua has no classes, so I built enemy types on metatables and prototype-based inheritance.

• Source code