Tinker update.
Get it building again with the updates. Maybe I change my engine too much.
Lay out the artillery mode tanks properly.
Some UI fixes.
Fix tank color rendering.
Fix a bunch of camera controls.
Fix blank screen while aiming, partially fix available area rendering.
Rotating camera works fine.
Reverse camera direction back to what is probably was originally.
Prevent division by zero.
Fix the available areas render, plus some other quirks.
Make sure skybox renders OK
Fix skybox orientation which had not been updated since the change to Z-up