Is there an API to track movement during a characters action?

This is my first API post, so please forgive my Noobi-ness. I was wondering if there is an API for tracking and/or limiting character movement. I saw one that created a highlighted area but i was hoping for a pointer with distances that refreshes when it the players turn is over. I use combat tracker, so it is clear when someone has an action and when their action is completed. This way, before a round is completed you can confirm a player moved only their allowed distances and where their "steps" took them to and from. 

I use this script to place a small icon under a token at the start of its turn.  It doesn't limit movement, or stay on the page after the current turn, but it is helpful for when players move to know where they started from.  But I'm also a little loose on movement sometimes, which is a holdover from playing in person where we didn't have computer-generated measuring tools, and tokens weren't always placed exactly in the center of a grid square. :)

Thank you Jarren. I will totally check that out. I just wish there was a way to keep the move icon feature active until a turn ends too.