Easy Question?

Hi mates.

How to detect inactivity?

It sounded like an easy problem to solve but now i struggle with it for quite a while and i guess i ask a little around now.

My solution so far is - counting all energy drops of my bot and if the energy difference has a value of 0.1 the inactivity timer has kicked in. Well, it works not very well and is quite a lot of code to just detect inactivity. Wall hits and inactivity is something that does not work very well for now. Has anyone solved this problem or might have a simpler solution? Any ideas would be gladly appreciated.

If you ask - why does he bother with inactivity? - well, i have no answer that doesn't sounds nitpicking.