AI freelook! I am no longer aware of any issues with it (other than one minor one involving it not removing the dim overlay sometimes, but that is very easy to ignore)

If someone goes over the map and fixes the camera coverage, I suggest we force AIs to use this (and I'll be making a thread about it)

code/WorkInProgress/AI_Visibility.dm

@@ -7,6 +7,14 @@
 /turf/proc/visibilityChanged()
 	cameranet.updateVisibility(src)
 
+/turf/New()
+	..()
+	cameranet.updateVisibility(src)
+/*
+/turf/Del()
+	..()
+	cameranet.updateVisibility(src)
+*/
 /datum/camerachunk
 	var/list/obscuredTurfs = list()
 	var/list/visibleTurfs = list()
@@ -246,6 +254,21 @@ var/datum/cameranet/cameranet = new()
 					chunk.cameras += c
 					chunk.hasChanged()
 
+/datum/cameranet/proc/removeCamera(obj/machinery/camera/c)
+	var/x1 = max(0, c.x - 16) & ~0xf
+	var/y1 = max(0, c.y - 16) & ~0xf
+	var/x2 = min(world.maxx, c.x + 16) & ~0xf
+	var/y2 = min(world.maxy, c.y + 16) & ~0xf
+
+	for(var/x = x1; x <= x2; x += 16)
+		for(var/y = y1; y <= y2; y += 16)
+			if(chunkGenerated(x, y, c.z))
+				var/datum/camerachunk/chunk = getCameraChunk(x, y, c.z)
+				if(!c)
+					chunk.hasChanged()
+				if(c in chunk.cameras)
+					chunk.cameras -= c
+					chunk.hasChanged()
 
 /mob/living/silicon/ai/var/mob/aiEye/eyeobj = new()
 
@@ -318,6 +341,18 @@ var/datum/cameranet/cameranet = new()
 	..()
 	cameranet.addCamera(src)
 
+/obj/machinery/camera/Del()
+	cameranet.removeCamera(src)
+	..()
+
+/obj/machinery/camera/attackby(var/obj/item/weapon/W as obj, var/mob/user as mob)
+	. = ..(W, user)
+	if(istype(W, /obj/item/weapon/wirecutters))
+		if(status)
+			cameranet.addCamera(src)
+		else
+			cameranet.removeCamera(src)
+
 /proc/checkcameravis(atom/A)
 	for(var/obj/machinery/camera/C in view(A,7))
 		if(!C.status || C.stat == 2)

code/defines/turf.dm

@@ -46,6 +46,7 @@
 
 /turf/space/New()
 //	icon = 'space.dmi'
+	..()
 	icon_state = "[pick(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25)]"
 
 /turf/simulated

code/game/turf.dm

@@ -132,6 +132,7 @@
 	for(var/obj/structure/lattice/L in locate(src.x, src.y, src.z))
 		del(L)
 	var/turf/simulated/floor/W = new /turf/simulated/floor( locate(src.x, src.y, src.z) )
+	W.New()
 
 	W.dir = old_dir
 	if(prior_icon) W.icon_state = prior_icon
@@ -151,6 +152,7 @@
 	for(var/obj/structure/lattice/L in locate(src.x, src.y, src.z))
 		del(L)
 	var/turf/simulated/floor/plating/W = new /turf/simulated/floor/plating( locate(src.x, src.y, src.z) )
+	W.New()
 
 	W.dir = old_dir
 	if(prior_icon) W.icon_state = prior_icon
@@ -166,6 +168,7 @@
 	for(var/obj/structure/lattice/L in locate(src.x, src.y, src.z))
 		del(L)
 	var/turf/simulated/floor/engine/E = new /turf/simulated/floor/engine( locate(src.x, src.y, src.z) )
+	E.New()
 
 	E.dir = old_dir
 	E.icon_state = "engine"
@@ -228,12 +231,14 @@
 /turf/proc/ReplaceWithSpace()
 	var/old_dir = dir
 	var/turf/space/S = new /turf/space( locate(src.x, src.y, src.z) )
+	S.New()
 	S.dir = old_dir
 	return S
 
 /turf/proc/ReplaceWithLattice()
 	var/old_dir = dir
 	var/turf/space/S = new /turf/space( locate(src.x, src.y, src.z) )
+	S.New()
 	S.dir = old_dir
 	new /obj/structure/lattice( locate(src.x, src.y, src.z) )
 	return S
@@ -241,6 +246,7 @@
 /turf/proc/ReplaceWithWall()
 	var/old_icon = icon_state
 	var/turf/simulated/wall/S = new /turf/simulated/wall( locate(src.x, src.y, src.z) )
+	S.New()
 	S.icon_old = old_icon
 	S.opacity = 0
 	S.sd_NewOpacity(1)
@@ -249,6 +255,7 @@
 /turf/proc/ReplaceWithRWall()
 	var/old_icon = icon_state
 	var/turf/simulated/wall/r_wall/S = new /turf/simulated/wall/r_wall( locate(src.x, src.y, src.z) )
+	S.New()
 	S.icon_old = old_icon
 	S.opacity = 0
 	S.sd_NewOpacity(1)

code/modules/mining/mine_turfs.dm

@@ -194,6 +194,7 @@
 				shroom.pixel_y = 0
 
 	W = new /turf/simulated/floor/plating/airless/asteroid( locate(src.x, src.y, src.z) )
+	W.New()
 	W.dir = old_dir
 	W.fullUpdateMineralOverlays()