Ah, that sounds like what I have! Subluxation of the ulnar nerve is what they told me it was - I could feel the nerve popping over my medial epicondyle. We tried steroid shots to reduce inflammation, but it came back after about nine months. It got so bad that I couldn't fully extend my arm or bring it in past ~45 degrees from extended. The inflammation showed up on an MRI. I had surgery to relocate the nerve to the inside of my elbow and have largely recovered from it, though it does flare up every so often.
The scare got me very interested in accessibility and I've looked into using Talon with eye tracking and stenography via Plover to improve my ergonomics, but I've never fully committed to any of them, but I'd love to know what communities exist. A Kinesis Advantage and a vertical mouse seem to keep it at bay on all but the longest of work days.
I'll also encourage you to post a link to the source, even if it's not the cleanest code. I've been thinking about trying to make something like this for a while, but using larger-scale cells from a side-on view to simulate plant growth. (To that end, I'm currently reading The Algorithmic Beauty of Plants[1], which performs its generation via L-systems.) I'd love to see how you've put this system together.