Just wanted to share this, was able to generate an image of the game map from data and save it to file, kind of neat to look at.
Thanks for sharing this. Agreed, pretty neat. Opens up a lot of external possibilities.
In your embedded screenshot, it appears, this completely bypasses the fog of war (FoW), is that bypass, mandatory by nature or optional?
Did you create any open source code on this or alternatively is there any public information/writing on your experiment?
Heres the gist of it;

here I'm using memory to read/write the bitmap data.
but you could alternatively pull similar data from the files described here:

According to
URW Fandom Wiki - [Playing With UrW Files], WORLD.PLM contains the map with fog of war included.
Possibly in memory somewhere as well.
Also note, completely possible to render the full map tiles (hence storing the file paths). Was working on a prototype in the old URWCharacterMenu, which was more or less a successful proof of concept. -- tried to find an old picture of it, but couldn't

.
edit: Oh also something i forgot to mention; I get the tile ID's/Path info from debug_ter-tiles.txt, located in the URW folder while you're playing.

edit2: saw your post in suggestions, working on something for it...