Merge pull request #5304 from VOREStation/vplk-reverse-all_atoms

Reverse use of global lists where they hurt performance.

code/game/atoms.dm

@@ -1,5 +1,3 @@
-GLOBAL_LIST_BOILERPLATE(all_atoms, /atom) // Use with care, its likely barely better than using world.
-
 /atom
 	layer = TURF_LAYER //This was here when I got here. Why though?
 	var/level = 2

code/game/machinery/computer3/computers/crew.dm

@@ -56,7 +56,7 @@
 
 
 /datum/file/program/crew/proc/scan()
-	for(var/obj/item/clothing/under/C in all_clothing)
+	for(var/obj/item/clothing/under/C in world)
 		if((C.has_sensor) && (istype(C.loc, /mob/living/carbon/human)))
 			tracked |= C
 	return 1

code/game/objects/items.dm

@@ -1,5 +1,3 @@
-GLOBAL_LIST_BOILERPLATE(all_items, /obj/item)
-
 /obj/item
 	name = "item"
 	icon = 'icons/obj/items.dmi'
@@ -595,7 +593,7 @@ var/list/global/slot_flags_enumeration = list(
 	I.Blend(new /icon('icons/effects/blood.dmi', "itemblood"),ICON_MULTIPLY) //adds blood and the remaining white areas become transparant
 
 	//not sure if this is worth it. It attaches the blood_overlay to every item of the same type if they don't have one already made.
-	for(var/obj/item/A in all_items)
+	for(var/obj/item/A in world)
 		if(A.type == type && !A.blood_overlay)
 			A.blood_overlay = image(I)
 

code/game/objects/objs.dm

@@ -1,5 +1,3 @@
-GLOBAL_LIST_BOILERPLATE(all_objs, /obj)
-
 /obj
 	layer = OBJ_LAYER
 	plane = OBJ_PLANE