Okay so, with cheat engine, I am able to get the walkable tiles in the current area, highgate for instance.
highgate.jpg
I see that the address to the area map is not far from the InGameData address, but I'm not sure how to get a decent offset to apply to the InGameData address, much less how to determine the width of the map, and then generate a bitmap like the image above. can someone please help me understand this a bit better? I've been trying for days on my own without much success.