Removes most hard-coded z level checks

code/modules/shuttle/assault_pod.dm

@@ -6,7 +6,6 @@
 	height = 7
 
 /obj/docking_port/mobile/assault_pod/request()
-	// TODO: Tie into space manager
 	if(z == initial(src.z)) //No launching pods that have already launched
 		return ..()
 

code/modules/shuttle/emergency.dm

@@ -202,8 +202,7 @@
 			if(time_left <= 0 && !shuttle_master.emergencyNoEscape)
 				//move each escape pod to its corresponding transit dock
 				for(var/obj/docking_port/mobile/pod/M in shuttle_master.mobile)
-					// TODO: Tie into space manager
-					if(M.z == ZLEVEL_STATION) //Will not launch from the mine/planet
+					if(is_station_level(M.z)) //Will not launch from the mine/planet
 						M.enterTransit()
 				//now move the actual emergency shuttle to its transit dock
 				for(var/area/shuttle/escape/E in world)

code/modules/shuttle/supply.dm

@@ -28,7 +28,7 @@
 	return 1
 
 /obj/docking_port/mobile/supply/canMove()
-	if(z == ZLEVEL_STATION)
+	if(is_station_level(z))
 		return forbidden_atoms_check(areaInstance)
 	return ..()
 
@@ -45,7 +45,7 @@
 	sell()
 
 /obj/docking_port/mobile/supply/proc/buy()
-	if(z != ZLEVEL_STATION)		//we only buy when we are -at- the station
+	if(!is_station_level(z))		//we only buy when we are -at- the station
 		return 1
 
 	if(!shuttle_master.shoppinglist.len)
@@ -93,7 +93,7 @@
 	shuttle_master.shoppinglist.Cut()
 
 /obj/docking_port/mobile/supply/proc/sell()
-	if(z != ZLEVEL_CENTCOMM)		//we only sell when we are -at- centcomm
+	if(z != level_name_to_num(CENTCOMM))		//we only sell when we are -at- centcomm
 		return 1
 
 	var/plasma_count = 0

code/modules/shuttle/syndicate.dm

@@ -30,9 +30,9 @@
 
 /obj/machinery/computer/shuttle/syndicate/drop_pod/Topic(href, href_list)
 	if(href_list["move"])
-		if(z != ZLEVEL_CENTCOMM)
+		if(z != level_name_to_num(CENTCOMM))
 			to_chat(usr, "<span class='warning'>Pods are one way!</span>")
 			return 0
 	..()
 
-#undef SYNDICATE_CHALLENGE_TIMER
+#undef SYNDICATE_CHALLENGE_TIMER