My program doesn't have bugs. It just develops random features.

Legacy:View Fog

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Setting Up View Fog in Unreal Tournament

In Unreal Tournament, view fog is specific to the zone containing the camera. It is specified by the ViewFlash and ViewFog variables in the zone's ZoneInfo. Here's a sample configuration:

ViewFlash X
ViewFlash Y
ViewFlash Z
ViewFog X 0.5
ViewFog Y 0.5
ViewFog Z 0.5

Setting Up View Fog in UT2003

View Fog does not appear to work properly in UT2003, however, the variables for it are still present so theoretically it may still work on some graphics hardware. View Fog is controlled by PhysicsVolumes in UT2003. Specifically, PhysicsVolumes are used. To set up View Fog, simply set the PhysicsVolume->ViewFog property to whatever color you want the screen to be tinted.

Tarquin: so does it work or not?

SuperApe: I'm wondering if the author meant to say ViewFlash doesn't work in UT200x, not ViewFog. Distance fog seems to work fine. But the issue is confused by the properties ViewFog and FlashFog in DamageType. I found this page through a search for that stuff.