Watch the video: http://www.youtube.com/watch?v=AZwg8alNg5c
Read the Script: http://blender3dvideos.blogspot.com/2010/01/bge-blender-249b-part-3.html
The purpose of this video is to show some basic sensor and actuator behavior. We'll look at the Always, Touch, and Keyboards sensors. I'll show you some basic techniques for moving an object, how the movement interacts with gravity, how to bounce an object, and how to replace one object with another object. I used Blender 2.49b for the demo.
