Why?
It's pure mathematics.
bearing is periscope indication
course is compass indication
I can SEE all of them, but I need to ACCESS them.
One string of code, calculated mark on the ADT, counterclockwise 360 scale instead +-180. and we have ultra handy AOB device
questions are :
how to access bearing and course data
how to implement simple calculations in the mod
how to draw dynamic calculated mark on the 360 static round scale