Adds the proximity monitor component. Performance improvement for turf/Entered (#14196)

* proximity monitor

* Update code/__HELPERS/unsorted.dm

Co-authored-by: AffectedArc07 <25063394+AffectedArc07@users.noreply.github.com>

* farie review tweaks

* actually I need this

Co-authored-by: AffectedArc07 <25063394+AffectedArc07@users.noreply.github.com>

code/modules/assembly/bomb.dm

@@ -12,6 +12,10 @@
 	var/obj/item/tank/bombtank = null //the second part of the bomb is a plasma tank
 	origin_tech = "materials=1;engineering=1"
 
+/obj/item/onetankbomb/ComponentInitialize()
+	. = ..()
+	AddComponent(/datum/component/proximity_monitor)
+
 /obj/item/onetankbomb/examine(mob/user)
 	. = ..()
 	. += bombtank.examine(user)

code/modules/assembly/holder.dm

@@ -41,19 +41,25 @@
 	if(!A1.remove_item_from_storage(src))
 		if(user)
 			user.remove_from_mob(A1)
-		A1.loc = src
+		A1.forceMove(src)
 	if(!A2.remove_item_from_storage(src))
 		if(user)
 			user.remove_from_mob(A2)
-		A2.loc = src
+		A2.forceMove(src)
 	A1.holder = src
 	A2.holder = src
 	a_left = A1
 	a_right = A2
+	if(has_prox_sensors())
+		AddComponent(/datum/component/proximity_monitor)
 	name = "[A1.name]-[A2.name] assembly"
 	update_icon()
 	return TRUE
 
+/obj/item/assembly_holder/proc/has_prox_sensors()
+	if(istype(a_left, /obj/item/assembly/prox_sensor) || istype(a_right, /obj/item/assembly/prox_sensor))
+		return TRUE
+	return FALSE
 
 /obj/item/assembly_holder/update_icon()
 	overlays.Cut()

code/modules/assembly/proximity.dm

@@ -13,6 +13,10 @@
 	var/timing = 0
 	var/time = 10
 
+/obj/item/assembly/prox_sensor/ComponentInitialize()
+	. = ..()
+	AddComponent(/datum/component/proximity_monitor)
+
 /obj/item/assembly/prox_sensor/describe()
 	if(timing)
 		return "<span class='notice'>The proximity sensor is arming.</span>"