[Waraddict]

Any ideas on how to create a map wide, white nuclear explosion flash?

I would guess it would involve particlesystems, the one area I have not yet coded in.

[2312222]

I'd look into WorldBuilder, it should be possible with scripts. Check out the CameraFX and there "Fade using an add blend to white."

[CodeCat]

Courtesy of Red Alert: ReGeneration...

-PlyrCivilian-
Nuke Flash Script [ns A nd]
Active in: Easy, Normal, Hard
Evaluate every frame

*** IF ***
Player 'Local Player' completed using Special power 'SuperweaponNuclearMissile'

*** THEN ***
Fade (0-1) from 0.00 to 1.00 adding toward white. Take 1 frame to increase, hold for 4 frames, and decrease 30 frames.

[CommieDog]

Wow, that could be useful for the mod I'm working on!