I have this final project for my video class where I need to mimic shadows moving down a hallway as if they are chasing a little kid, but I can't get it just right. Later this week I'm going to use the green screen room at my school to try out this idea I have but I'm not sure how it will work. I've tried using displacement maps in After Effects to distort shadows created in photoshop as the camera moves down the hall, but so far I haven't had much luck. If all else fails, I can always rotoscope some shadows in but that will be a pain in the ass. Any ideas? Unfortunately I only have Final Cut Pro, After Effects, and Photoshop to work my magic, so keep that in mind if you have any suggestions. Not sure if I'll get much feedback on this topic here, but I figure its worth the shot. Thanx for any feedback.

I forgot to mention that I want the shadows to wrap around walls in certain areas. The wrapping part is where I run into problems, the other stuff I can deal with.