Removes mob references from camera motion tracking

code/game/machinery/camera/motion.dm

@@ -1,3 +1,4 @@
+<<<<<<< HEAD
 /obj/machinery/camera
 
 	var/list/localMotionTargets = list()
@@ -70,3 +71,77 @@
 	if (!area_motion)
 		if(isliving(AM))
 			newTarget(AM)
+=======
+/obj/machinery/camera
+
+	var/list/localMotionTargets = list()
+	var/detectTime = 0
+	var/area/ai_monitored/area_motion = null
+	var/alarm_delay = 30 // Don't forget, there's another 3 seconds in queueAlarm()
+
+/obj/machinery/camera/process()
+	// motion camera event loop
+	if(!isMotion())
+		. = PROCESS_KILL
+		return
+	if (detectTime > 0)
+		var/elapsed = world.time - detectTime
+		if (elapsed > alarm_delay)
+			triggerAlarm()
+	else if (detectTime == -1)
+		for (var/targetref in getTargetList())
+			var/mob/target = locate(targetref) in GLOB.mob_list
+			if (target.stat == DEAD || QDELETED(target) || (!area_motion && !in_range(src, target)))
+				//If not part of a monitored area and the camera is not in range or the target is dead
+				lostTarget(target)
+
+/obj/machinery/camera/proc/getTargetList()
+	if(area_motion)
+		return area_motion.motionTargets
+	return localMotionTargets
+
+/obj/machinery/camera/proc/newTarget(mob/target)
+	if(isAI(target))
+		return 0
+	if (detectTime == 0)
+		detectTime = world.time // start the clock
+	var/list/targets = getTargetList()
+	targets |= "\ref[target]"
+	return 1
+
+/obj/machinery/camera/Destroy()
+	var/area/ai_monitored/A = get_area(src)
+	if(istype(A))
+		A.motioncameras -= src
+	return ..()
+
+/obj/machinery/camera/proc/lostTarget(mob/target)
+	var/list/targets = getTargetList()
+	targets -= "\ref[target]"
+	if (targets.len == 0)
+		cancelAlarm()
+
+/obj/machinery/camera/proc/cancelAlarm()
+	if (detectTime == -1)
+		for (var/mob/living/silicon/aiPlayer in GLOB.player_list)
+			if (status)
+				aiPlayer.cancelAlarm("Motion", get_area(src), src)
+	detectTime = 0
+	return 1
+
+/obj/machinery/camera/proc/triggerAlarm()
+	if (!detectTime)
+		return 0
+	for (var/mob/living/silicon/aiPlayer in GLOB.player_list)
+		if (status)
+			aiPlayer.triggerAlarm("Motion", get_area(src), list(src), src)
+	detectTime = -1
+	return 1
+
+/obj/machinery/camera/HasProximity(atom/movable/AM as mob|obj)
+	// Motion cameras outside of an "ai monitored" area will use this to detect stuff.
+	if (!area_motion)
+		if(isliving(AM))
+			newTarget(AM)
+
+>>>>>>> 1dc0519... Removes mob references from camera motion tracking (#32002)