Creating level maps for Turok

This post is part of the Game Boy series (#10). In my last post, I wrote about how retroachievements.org works, and I am currently creating achievement for the GameBoy game Turok: Battle of the Bionosaurs. When I started out, I couldn't find any maps for the game, which is a pity, because a good achievement set should cover (to some extent) all of the available content of a game, including secret areas etc. Normally, VGmaps.com is the place to go for GameBoy maps, but unfortunately they had nothing on Turok. To thoroughly explore the game, I decided to create my own maps. One possible approach would be creating lots of screenshots and then stitching them together manually, but that sounds like an awful lot of work. (I guess some of the maps on VGmaps were made this way, so respect to all ) My idea was: If I could walk through the game and continuously grab screenshots (via script), those could then be stitched together in the background, so I could get a full map of everyhting that's…