Figuring out what is the fastest way to reach a heading.

This is for my spaceship. Imagine is want to indicate the direction the player needs to rotate to reach the wanted angle the fastest.

Given 2 vector3 position, Player and Target and the heading of the player.

How can I make a 2d sprite indicate that the player needs to turn up down left or right to reach the targeted angle?

Getting the target direction is easy

Code (CSharp):

1. Vector3 wantedheading = SelectedObject.transform.position - Player.transform.position;
2. Vector3 curentheading = Player.transform.localRotation.eulerAngles;

But now what? I have tried and tried but I just can't figure it out.

Any help much appreciated.

 

Is there a reason you can't just use transform.LookAt(wantedheading) to turn you ship to the correct angle immediately?

 

I want to have an indicator that always points in the direction of the selected object, if it is not on the screen.

 

If that indicator is something like an arrow pointing to the location I would give that the transform.lookat script then, otherwise I would create an empty gameobject, have that look at the target and show it's angels on screen in numbers if that is what your idea was.