Hi, just thought I'd share this link that I came across for this free collision library. Not sure if its compatible with Purebasic, but I do know that Elias_t has developed a ColDet wrapper for Blitz3D.
http://www.photoneffect.com/coldet/
This is a post from the site's forum on the subject of using the lib in a commercial game.
http://pub6.ezboard.com/fthephotoneffec ... =172.topic
