Refactors the AI eye.

Now possible to customize chunk obfuscation image per chunk type.
Obfuscation images are stored per type (thus the small datum structure) to reduce memory footprint in the case of multiple chunks using the same image.

code/modules/mob/freelook/chunk.dm

@@ -5,6 +5,10 @@
 // A 16x16 grid of the map with a list of turfs that can be seen, are visible and are dimmed.
 // Allows the Eye to stream these chunks and know what it can and cannot see.
 
+/datum/obfuscation
+	var/icon = 'icons/effects/cameravis.dmi'
+	var/icon_state = "black"
+
 /datum/chunk
 	var/list/obscuredTurfs = list()
 	var/list/visibleTurfs = list()
@@ -17,6 +21,7 @@
 	var/x = 0
 	var/y = 0
 	var/z = 0
+	var/datum/obfuscation/obfuscation = new()
 
 // Add an eye to the chunk, then update if changed.
 
@@ -83,29 +88,29 @@
 
 	for(var/turf in visAdded)
 		var/turf/t = turf
-		if(t.obscured)
-			obscured -= t.obscured
+		if(t.obfuscations[obfuscation.type])
+			obscured -= t.obfuscations[obfuscation.type]
 			for(var/eye in seenby)
 				var/mob/eye/m = eye
 				if(!m || !m.owner)
 					continue
 				if(m.owner.client)
-					m.owner.client.images -= t.obscured
+					m.owner.client.images -= t.obfuscations[obfuscation.type]
 
 	for(var/turf in visRemoved)
 		var/turf/t = turf
 		if(obscuredTurfs[t])
-			if(!t.obscured)
-				t.obscured = image('icons/effects/cameravis.dmi', t, "black", 15)
+			if(!t.obfuscations[obfuscation.type])
+				t.obfuscations[obfuscation.type] = image(obfuscation.icon, t, obfuscation.icon_state, 15)
 
-			obscured += t.obscured
+			obscured += t.obfuscations[obfuscation.type]
 			for(var/eye in seenby)
 				var/mob/eye/m = eye
 				if(!m || !m.owner)
 					seenby -= m
 					continue
 				if(m.owner.client)
-					m.owner.client.images += t.obscured
+					m.owner.client.images += t.obfuscations[obfuscation.type]
 
 /datum/chunk/proc/acquireVisibleTurfs(var/list/visible)
 
@@ -134,8 +139,8 @@
 
 	for(var/turf in obscuredTurfs)
 		var/turf/t = turf
-		if(!t.obscured)
-			t.obscured = image('icons/effects/cameravis.dmi', t, "black", 15)
-		obscured += t.obscured
+		if(!t.obfuscations[obfuscation.type])
+			t.obfuscations[obfuscation.type] = image(obfuscation.icon, t, obfuscation.icon_state, 15)
+		obscured += t.obfuscations[obfuscation.type]
 
 #undef UPDATE_BUFFER

code/modules/mob/freelook/eye.dm

@@ -56,6 +56,9 @@ mob/eye/Del()
 		T = get_turf(T)
 		loc = T
 
+		if(owner.client)
+			owner.client.eye = src
+
 		visualnet.visibility(src)
 		return 1
 	return 0

code/modules/mob/freelook/update_triggers.dm

@@ -8,7 +8,7 @@
 			VN.updateVisibility(A, opacity_check)
 
 /turf
-	var/image/obscured
+	var/list/image/obfuscations = new()
 
 /turf/drain_power()
 	return -1

code/modules/mob/living/silicon/ai/freelook/eye.dm

@@ -17,8 +17,6 @@
 		if(cancel_tracking)
 			ai.ai_cancel_tracking()
 
-		if(ai.client)
-			ai.client.eye = src
 		//Holopad
 		if(ai.holo)
 			ai.holo.move_hologram(ai)
@@ -41,7 +39,6 @@
 	eyeobj.ai = src
 	eyeobj.owner = src
 	eyeobj.name = "[src.name] (AI Eye)" // Give it a name
-	eyeobj.visualnet = cameranet
 	spawn(5)
 		eyeobj.loc = src.loc