Make a walking path system like in "Black and White 2"

Hello, so I was wondering if someone could lead me in the right direction to make a pathway system like in "Black and W$$anonymous$$te 2"

Here is a link to a video with the pathway being made. Please go to 10:30 into the video.

Now I've looked at making quads by script and I can do that (Not dynamically). How would I go about making the pathway bend to the mouse dynamically like in the video? T$$anonymous$$s would be done on a terrain by the way.

If you have any questions please ask. Thanks

~Jared