lfsr math in pitfall!

A few weeks ago I attended VCF West at the Computer History Museum in Mountain View. One of my favorite talks was Making Games in the 1980s by David Crane and Garry Kitchen about the unique constraints of programming for the Atari 2600. Crane mentioned one hack in particular from his game Pitfall! that inspired this blog post. Pitfall! is a platform game in which you control a character named…