I'm not sure what you mean by 'build in'. Do you mean the templates or that what you can access via the term 'camera' in your scripts.
The template has some obstacle avoidance, but the mere camera of the engine doesn't.

http://www.puppenheim.org/
http://www.wuerfels-welt.de
Old Game Tutorial: http://www.puppenheim.org/MITutorial.zip
Free Game Editor: http://puppenheim.org/AlienalsWeihnachtsmann.zip
http://www.puppenheim.org/blender_starting_main_settings.txt