Removes most hard-coded z level checks

code/modules/mining/equipment_locker.dm

@@ -528,8 +528,7 @@
 
 /obj/item/device/wormhole_jaunter/attack_self(mob/user as mob)
 	var/turf/device_turf = get_turf(user)
-	// TODO: Tie into space manager
-	if(!device_turf||device_turf.z==ZLEVEL_CENTCOMM||device_turf.z>=ZLEVEL_EMPTY)
+	if(!device_turf||is_teleport_allowed(device_turf.z))
 		to_chat(user, "<span class='notice'>You're having difficulties getting the [src.name] to work.</span>")
 		return
 	else
@@ -537,8 +536,7 @@
 		var/list/L = list()
 		for(var/obj/item/device/radio/beacon/B in world)
 			var/turf/T = get_turf(B)
-			// TODO: Tie into space manager
-			if(T.z == ZLEVEL_STATION)
+			if(is_station_level(T.z))
 				L += B
 		if(!L.len)
 			to_chat(user, "<span class='notice'>The [src.name] failed to create a wormhole.</span>")

code/modules/mining/ore.dm

@@ -240,8 +240,7 @@
 /obj/item/weapon/ore/New()
 	pixel_x = rand(0,16)-8
 	pixel_y = rand(0,8)-8
-	// TODO: Tie into space manager
-	if(src.z == ZLEVEL_ASTEROID)
+	if(is_mining_level(src.z))
 		score_oremined++ //When ore spawns, increment score.  Only include ore spawned on mining asteroid (No Clown Planet)
 
 /obj/item/weapon/ore/ex_act()