comments, cleanup

code/datums/helper_datums/teleport.dm

@@ -114,6 +114,7 @@
 
 	if(!is_teleport_allowed(destturf.z))
 		return 0
+	// Only check the destination zlevel for is_teleport_allowed. Checking origin as well breaks ERT teleporters.
 
 	var/area/destarea = get_area(destturf)
 

code/game/machinery/computer/depot.dm

@@ -403,8 +403,6 @@
 		var/turf/portal_turf = get_step(src, portaldir)
 		var/obj/effect/portal/redspace/P = new(portal_turf, tele_target, src, 0)
 		myportal = P
-		P.failchance = 0
-		P.icon_state = "portal1"
 		var/area/A = get_area(tele_target)
 		P.name = "[A] portal"
 	else if(!portal_enabled && myportal)

code/game/machinery/teleporter.dm

@@ -340,10 +340,10 @@
 				to_chat(T, "[pick(TPError)]")
 			return
 		else
-			if(!teleport(M) && isliving(M))
+			if(!teleport(M) && isliving(M)) // the isliving(M) is needed to avoid triggering errors if a spark bumps the telehub
 				visible_message("<span class='warning'>[src] emits a loud buzz, as its teleport portal flickers and fails!</span>")
 				playsound(loc, 'sound/machines/buzz-sigh.ogg', 50, 0)
-				power_station.toggle()
+				power_station.toggle() // turn off the portal.
 
 			use_power(5000)
 		//--FalseIncarnate

code/game/objects/effects/portals.dm

@@ -65,6 +65,7 @@
 
 /obj/effect/portal/redspace
 	name = "redspace portal"
-	desc = "A rare kind of subspace portal, capable of cutting through interference that can jam normal bluespace portals."
+	desc = "A portal capable of bypassing bluespace interference."
 	icon_state = "portal1"
+	failchance = 0
 	ignore_tele_proof_area_setting = TRUE