Rotate a ship with a mouse ray

Questions & Answers
1

I need to cast an invisible ray out from my third person camera, then rotate the camera/ship to follow that ray’s direction. This should create the effect of constantly rotating the ship while away from the camera/screen center. I’ve had no luck with any of the Lerp or RotateTowards methods either. If it helps; my camera is located behind the ship and locked to it. When the ship moves so will the camera. This is a 3D spaceflight game.

I’m not asking for source code, just a general solution or at the very least some explanation of how the methods I mentioned (Lerp, RotateTowards) work, because I don’t understand them (or I’m just not using them properly).

2

From my answer to this question. You should use Quaternion.FromToRotation. And after that, use Quaternion.Lerp. Something like this (This code should be in FixedUpdate for smooth results):

 Vector3 direction = Vector3.forward; //Put your ray direction here
Quaternion toRotation = Quaternion.FromToRotation(transform.forward, direction);
transform.rotation = Quaternion.Lerp(transform.rotation, toRotation, speed * Time.time);

You can set the speed variable to how slow or fast you want the rotation to be. Put this code on your ship. This is the third time today that I am answering a question with this same answer ;).