Weapon Alpha

[Valo]

You could do it based on his velocity. Then, just use a bit of trig to determine the image_angle.

For example:

image_angle = inverseCosine(velocity.x / velocity.length).

Actually, it may be better to use the inverse of tangent and use the velocities X and Y component so that the rotation works for any direction.

Ah but thats my secret, I am almost physically incapable of math.