I recently moved the bitmap placement to a Python module here: https://github.com/Southclaws/Scaven...ee/master/pyss and I rewrote MapAndreas in Python too. I don't have any of the original links (I should probably write a new topic for it and edit the original...) sorry!
The solution for occasional inaccuracies with rooftops is to compare the height of the neighbouring 8 grid squares and if they are vastly different (above a certain threshold) then ignore that square. I'll do a proper writeup on this when I have time but that's the basic concept.
Lol an american gangster is spamming you on your profile. xd Oh and Corne if you want to join my server, you know the ip hehe. And you can make a forum account if you want to. You can find it in my signature. xd I don't know why i'm talking english, since we can also talk Dutch xd