You could just create decals of fog. Copy an existing decal located at C:\Program Files\The Game Creators\FPS Creator\Files\entitybank\generic\decals and then change the fpe.
----------------------------
;header
desc = Name Of Your Decal
;ai
aiinit = repeatsound.fpi
aimain = decal.fpi
aidestroy = disappear1.fpi
;orientation
model = particles.x
textured = particles_d.tga
transparency = 0
defaultheight = 0.5
soundset = your_sound_wave
;identity details
strength = 0
isimmobile = 1
ismarker = 4
;decals
decalmax = 1
decal0 = your_decal_name
-----------------------------------------
then open an image editor and create the image to go with it.
Then copy an existing decal folder in the C:\Program Files\The Game Creators\FPS Creator\Files\gamecore\decals\ and save your new image to this folder with the name decal.dds
It seems to work just fine in most cases.
The person that now knows the most started with many questions. Patients and tolorance are the keys to the passage of knowledge. We're all noobies at something. Support your local Riker 9 Chapter.