Making fog which isn't just a circle around the player

[kater3ds (katerCodes)]

Heya!
I’m unsure how to exactly explain the problem, but I’m trying to make fog which is only at places the player hasn’t “discovered yet”. Or simply just making certain areas completely dark.

Here is an example from the game “Noobs in Combat”. As you can see, all the areas where my units can’t see to are completely black and foggy.

How could I achieve something like this??

[Controlguyman (Train)]

Set the Ambience(and OutsideAmbience)’s color to black.

[kater3ds (katerCodes)]

Ah ok. So it will make everything pitch black except for areas where there’s light?

[Controlguyman (Train)]

Yes, it’ll make all the areas w/o light pitch black. Just make sure there’s absolutely no light.