This is marvelous! The really annoying thing about doing this then was that I had to enter my programs manually via the calculator.
Now that I'm free I could connect the calculator to my laptop and code via a fancy TI-BASIC IDE. On the other hand, now that I'm free, I can just use Godot or something if I wanted to make games ;)
Edit: this code uses a lot of features I didn't know about then (since I just had the manual that came with the calculator, which didn't go into a ton of depth about TI-BASIC features). I wish I could have watched this back then!