Monster only in darkness???

[morgoe]

Not sure on how to block enemies' movement, but to detect whether the player is in a lit environment:

Run a timer every second, getting the Player's sanity. Save it to an int variable called 'lastSanity' or something, and then if the current sanity > lastSanity, he's in a lit environment, else he's in darkness. Doesn't account for insanity events, but other than that it works really well.

I'm using a similar method in my map to disable sanity regeneration when you're moving.