1

In my game I have the camera 45 degrees rotated around x axis, looking down at game area.
I have gun turret and it fires bullet prefabs created from 2D sprites.

Sprite image is as shown below.

14858-bullet.png

I get the direction vector to the target,

direction		= (target - startPosition).normalized;

But I can’t get the bullet sprite to rotate to the correct orientation.

Can anyone provide some help?

2

What about lookAt?

bullet.transform.LookAt(target);
3

This is an ugly rotation problem. Assuming you are using the built-in plane to display the bullet, this might work:

bullet.transform.right = -(target - startPosition);  
var q = Quaternion.FromToRotation(bullet.transform.up, -Camera.main.transform.forward);
bullet.transform.rotation = q * bullet.transform.rotation;