Z-Level Compatibility

Now possible to configure 3 different kind of Z-levels.
Station levels: Which Z-levels the station exists on.
Contact levels: Which Z-levels are typically affected by, for example, Code Red which alters the visual state of fire alarms.
Player levels: Which Z-levels a character can typically reach.

code/modules/admin/admin.dm

@@ -973,7 +973,7 @@ var/global/floorIsLava = 0
 		if(3)
 			var/count = 0
 			for(var/mob/living/carbon/monkey/Monkey in world)
-				if(Monkey.z == 1)
+				if(Monkey.z in station_levels)
 					count++
 			return "Kill all [count] of the monkeys on the station"
 		if(4)

code/modules/admin/topic.dm

@@ -2295,7 +2295,7 @@
 				message_admins("[key_name_admin(usr)] made the floor LAVA! It'll last [length] seconds and it will deal [damage] damage to everyone.", 1)
 
 				for(var/turf/simulated/floor/F in world)
-					if(F.z == 1)
+					if(F.z in config.station_levels)
 						F.name = "lava"
 						F.desc = "The floor is LAVA!"
 						F.overlays += "lava"
@@ -2320,7 +2320,7 @@
 						sleep(10)
 
 					for(var/turf/simulated/floor/F in world) // Reset everything.
-						if(F.z == 1)
+						if(F.z in config.station_levels)
 							F.name = initial(F.name)
 							F.desc = initial(F.desc)
 							F.overlays.Cut()
@@ -2368,7 +2368,7 @@
 				feedback_inc("admin_secrets_fun_used",1)
 				feedback_add_details("admin_secrets_fun_used","EgL")
 				for(var/obj/machinery/door/airlock/W in world)
-					if(W.z == 1 && !istype(get_area(W), /area/bridge) && !istype(get_area(W), /area/crew_quarters) && !istype(get_area(W), /area/security/prison))
+					if(W.z in config.station_levels && !istype(get_area(W), /area/bridge) && !istype(get_area(W), /area/crew_quarters) && !istype(get_area(W), /area/security/prison))
 						W.req_access = list()
 				message_admins("[key_name_admin(usr)] activated Egalitarian Station mode")
 				command_announcement.Announce("Centcomm airlock control override activated. Please take this time to get acquainted with your coworkers.", new_sound = 'sound/AI/commandreport.ogg')

code/modules/admin/verbs/diagnostics.dm

@@ -17,7 +17,7 @@
 	var/inactive_on_main_station = 0
 	for(var/zone/zone in air_master.zones)
 		var/turf/simulated/turf = locate() in zone.contents
-		if(turf && turf.z == 1)
+		if(turf && turf.z in config.station_levels)
 			if(zone.needs_update)
 				active_on_main_station++
 			else