What are some ways to indicate an Actor has stopped moving?

Hey Rama, thanks for the input!

That’s quite similar to what I had attempted but I encountered a problem with both my solution and yours - it’s causing my game to crash:

With _C being defined as:

7835-ss+(2014-06-05+at+05.52.43)6.png

I’ve been trying to work out why that is but no solutions as of yet, any input?