I need help from another developer.
 

So I made this mod a while back. As we all know it's pretty much one of the best custom mods for people who hate to open up the map, or find the minimap in some forms pointless. It's very similar to TomTom in WoW.

The "update" for each location tick is pretty darn smooth, but...
My issue with my mod is if initially your "destination" is far from the player and you run to the destination and then pick another destination, from then on out the transition rate of the arrow is no longer smooth.

This has really been bugging the bajoobses out of me. Try it out for yourself. The mod itself isn't large (< 25 lines) , but by golly did it take forever to do the workarounds since there is no function/formula like in lua. It uses quite a bit of math (trigonometry, algebra).

Please help me. This has been eating at me for a while now.

I tried it out... and while I like it... I'm not sure I'm encountering the problem. Player rotation is always as smooth as FPS allows and movement is always slightly more jumpy... especially noticeable if you purposely walk past your destination.