Player Z-tracking, again

code/modules/shuttle/on_move.dm

@@ -89,15 +89,23 @@ All ShuttleMove procs go here
 			return
 
 	loc = newT
+
 	return TRUE
 
 // Called on atoms after everything has been moved
 /atom/movable/proc/afterShuttleMove(turf/oldT, list/movement_force, shuttle_dir, shuttle_preferred_direction, move_dir, rotation)
+
+	var/turf/newT = get_turf(src)
+	if (newT.z != oldT.z)
+		onTransitZ(oldT.z, newT.z)
+
 	if(light)
 		update_light()
 	if(rotation)
 		shuttleRotate(rotation)
 
+
+
 	update_parallax_contents()
 
 	return TRUE
@@ -328,9 +336,6 @@ All ShuttleMove procs go here
 /atom/movable/lighting_object/onShuttleMove()
 	return FALSE
 
-/atom/movable/light/onShuttleMove()
-	return FALSE
-
 /obj/docking_port/stationary/onShuttleMove(turf/newT, turf/oldT, list/movement_force, move_dir, obj/docking_port/stationary/old_dock, obj/docking_port/mobile/moving_dock)
 	if(!moving_dock.can_move_docking_ports || old_dock == src)
 		return FALSE