More Dereferencing

code/game/machinery/computer/station_alert.dm

@@ -25,6 +25,7 @@
 /obj/machinery/computer/station_alert/Destroy()
 	alarm_monitor.unregister(src)
 	qdel(alarm_monitor)
+	alarm_monitor = null
 	return ..()
 
 /obj/machinery/computer/station_alert/attack_ai(mob/user)

code/game/objects/items/devices/sensor_device.dm

@@ -1,5 +1,5 @@
 /obj/item/device/sensor_device
-	name = "handheld crew monitor" 
+	name = "handheld crew monitor"
 	desc = "A miniature machine that tracks suit sensors across the station."
 	icon = 'icons/obj/device.dmi'
 	icon_state = "scanner"
@@ -7,10 +7,15 @@
 	slot_flags = SLOT_BELT
 	origin_tech = "biotech=3;materials=3;magnets=3"
 	var/datum/nano_module/crew_monitor/crew_monitor
-	
+
 /obj/item/device/sensor_device/New()
 	crew_monitor = new(src)
 
+/obj/item/device/sensor_device/Destroy()
+	qdel(crew_monitor)
+	crew_monitor = null
+	return ..()
+
 /obj/item/device/sensor_device/attack_self(mob/user as mob)
 	ui_interact(user)
 

code/game/objects/objs.dm

@@ -1,6 +1,5 @@
 /obj
 	//var/datum/module/mod		//not used
-	var/w_amt = 0	// waster amounts
 	var/origin_tech = null	//Used by R&D to determine what research bonuses it grants.
 	var/reliability = 100	//Used by SOME devices to determine how reliable they are.
 	var/crit_fail = 0

code/modules/assembly/igniter.dm

@@ -3,34 +3,43 @@
 	desc = "A small electronic device able to ignite combustable substances."
 	icon_state = "igniter"
 	materials = list(MAT_METAL=500, MAT_GLASS=50)
-	w_amt = 10
 	origin_tech = "magnets=1"
+	var/datum/effect/effect/system/spark_spread/sparks = new /datum/effect/effect/system/spark_spread
 
-	describe()
-		return "The igniter is [secured?"secured.":"unsecured."]"
+/obj/item/device/assembly/igniter/New()
+	..()
+	sparks.set_up(2, 0, src)
+	sparks.attach(src)
 
+/obj/item/device/assembly/igniter/Destroy()
+	qdel(sparks)
+	sparks = null
+	return ..()
+
+
+/obj/item/device/assembly/igniter/describe()
+	return "The igniter is [secured?"secured.":"unsecured."]"
+
+
+/obj/item/device/assembly/igniter/activate()
+	if(!..())	return 0//Cooldown check
+	var/turf/location = get_turf(loc)
+	if(location)	location.hotspot_expose(1000,1000)
+	if (istype(src.loc,/obj/item/device/assembly_holder))
+		if (istype(src.loc.loc, /obj/structure/reagent_dispensers/fueltank/))
+			var/obj/structure/reagent_dispensers/fueltank/tank = src.loc.loc
+			if (tank)
+				tank.explode()
+		if (istype(src.loc.loc, /obj/item/weapon/reagent_containers/glass/beaker/))
+			var/obj/item/weapon/reagent_containers/glass/beaker/beakerbomb = src.loc.loc
+			if(beakerbomb)
+				beakerbomb.heat_beaker()
+
+	sparks.start()
+	return 1
+
+
+/obj/item/device/assembly/igniter/attack_self(mob/user as mob)
 	activate()
-		if(!..())	return 0//Cooldown check
-		var/turf/location = get_turf(loc)
-		if(location)	location.hotspot_expose(1000,1000)
-		if (istype(src.loc,/obj/item/device/assembly_holder))
-			if (istype(src.loc.loc, /obj/structure/reagent_dispensers/fueltank/))
-				var/obj/structure/reagent_dispensers/fueltank/tank = src.loc.loc
-				if (tank)
-					tank.explode()
-			if (istype(src.loc.loc, /obj/item/weapon/reagent_containers/glass/beaker/))
-				var/obj/item/weapon/reagent_containers/glass/beaker/beakerbomb = src.loc.loc
-				if(beakerbomb)
-					beakerbomb.heat_beaker()
-
-		var/datum/effect/effect/system/spark_spread/s = new /datum/effect/effect/system/spark_spread
-		s.set_up(3, 1, src)
-		s.start()
-
-		return 1
-
-
-	attack_self(mob/user as mob)
-		activate()
-		add_fingerprint(user)
-		return
+	add_fingerprint(user)
+	return

code/modules/assembly/shock_kit.dm

@@ -11,7 +11,9 @@
 
 /obj/item/assembly/shock_kit/Destroy()
 	qdel(part1)
+	part1 = null
 	qdel(part2)
+	part2 = null
 	return ..()
 
 /obj/item/assembly/shock_kit/attackby(obj/item/weapon/W as obj, mob/user as mob, params)

code/modules/assembly/signaler.dm

@@ -27,6 +27,12 @@
 			spawn(1) // For things that set the frequency directly
 				set_frequency(frequency)
 		return
+
+	Destroy()
+		if(radio_controller)
+			radio_controller.remove_object(src,frequency)
+		return ..()
+
 	describe()
 		return "\The [src]'s power light is [receiving?"on":"off"]"
 

code/modules/mob/login.dm

@@ -30,7 +30,9 @@
 
 	client.images = null				//remove the images such as AIs being unable to see runes
 	client.screen = list()				//remove hud items just in case
-	if(hud_used)	qdel(hud_used)		//remove the hud objects
+	if(hud_used)
+		qdel(hud_used)		//remove the hud objects
+		hud_used = null
 	hud_used = new /datum/hud(src)
 
 	next_move = 1

code/modules/mob/mob.dm

@@ -3,6 +3,7 @@
 	dead_mob_list -= src
 	living_mob_list -= src
 	qdel(hud_used)
+	hud_used = null
 	if(mind && mind.current == src)
 		spellremove(src)
 	ghostize()