Refactors the AI eye.

Generalizes the eye itself, allowing it to be created and used by any other mob.

code/modules/mob/freelook/eye.dm

@@ -0,0 +1,67 @@
+// EYE
+//
+// A mob that another mob controls to look around the station with.
+// It streams chunks as it moves around, which will show it what the controller can and cannot see.
+
+/mob/eye
+	name = "Eye"
+	icon = 'icons/mob/eye.dmi'
+	icon_state = "default-eye"
+	alpha = 127
+	var/list/visibleChunks = list()
+	var/mob/living/owner = null
+	density = 0
+	status_flags = GODMODE  // You can't damage it.
+	see_in_dark = 7
+	invisibility = INVISIBILITY_EYE
+	var/ghostimage = null
+	var/datum/cameranet/visualnet
+
+/mob/eye/New()
+	ghostimage = image(src.icon,src,src.icon_state)
+	ghost_darkness_images |= ghostimage //so ghosts can see the eye when they disable darkness
+	ghost_sightless_images |= ghostimage //so ghosts can see the eye when they disable ghost sight
+	updateallghostimages()
+	..()
+
+mob/eye/Del()
+	if (ghostimage)
+		ghost_darkness_images -= ghostimage
+		ghost_sightless_images -= ghostimage
+		del(ghostimage)
+		ghostimage = null;
+		updateallghostimages()
+	..()
+
+// Movement code. Returns 0 to stop air movement from moving it.
+/mob/eye/Move()
+	return 0
+
+/mob/eye/examinate()
+	set popup_menu = 0
+	set src = usr.contents
+	return 0
+
+/mob/eye/pointed()
+	set popup_menu = 0
+	set src = usr.contents
+	return 0
+
+/mob/eye/examine(mob/user)
+
+// Use this when setting the eye's location.
+// It will also stream the chunk that the new loc is in.
+/mob/eye/proc/setLoc(var/T)
+	if(owner)
+		T = get_turf(T)
+		loc = T
+
+		visualnet.visibility(src)
+		return 1
+	return 0
+
+/mob/eye/proc/getLoc()
+	if(owner)
+		if(!isturf(owner.loc) || !owner.client)
+			return
+		return loc