Is this the kind of examples you are looking for?
Selecting 3d objects :
http://www.blitzbasic.com/codearcs/codearcs.php?code=538
Line of Sight Detection
http://www.blitzbasic.com/codearcs/codearcs.php?code=532
Both of these are in the code archives - my second home ;)
Selecting 3d objects :
http://www.blitzbasic.com/codearcs/codearcs.php?code=538
Line of Sight Detection
http://www.blitzbasic.com/codearcs/codearcs.php?code=532
Both of these are in the code archives - my second home ;)