mooege/mooege — pull request #383 by mdz444 (2011-12-08 09:25:20+00:00)
Title: Fix usage of WorldObject facing angle and quaternion rotations.

Use of FacingAngle as a quaternion w-value has been changed to use
RotationW. Code that sets FacingAngle with an actual facing angle has
been changed to call SetFacingRotation().

This is the new version of my old pr:
https://github.com/mooege/mooege/pull/380

As suggested by Farmy, this version doesn't use a setter/getter field but instead a method. Which hopefully makes it more apparent that the old rotation is completely replaced when setting the facing angle.