A while ago, for something to do on a cold wet day, I wrote a "DBPro Matrix Command set" for Blitz3D, it's ideal for doing tiled landscapes - although I mockingly recreated the DBP syntax but they're all just B3D functions and can be renamed. If you want to look for it then check it out in the Showcase section / or was it code archives?
Anyway, it's a fully functional terrain tile system with a few extra features and could suite the project quite well.
Anyway, it's a fully functional terrain tile system with a few extra features and could suite the project quite well.