I have tracked camera to track a ball. When I move the ball manually, the camera tracks it. But when I apply motion using w,a,s,d keys to move it top, left,down and right, the camera stops tracking the ball. Why is this happening?
how did you do the constraint?
In BGE look on the "node logic" > "actuator" > "camera".
Send the .blend file if you need more help or video.