Fixes bugs with shuttles breaking pipes, wires and disposals

code/modules/shuttle/on_move.dm

@@ -1,3 +1,8 @@
+// Called before shuttle starts moving atoms.
+/atom/movable/proc/beforeShuttleMove(turf/T1, rotation)
+	return
+
+// Called when shuttle attempts to move an atom.
 /atom/movable/proc/onShuttleMove(turf/T1, rotation)
 	if(rotation)
 		shuttleRotate(rotation)
@@ -6,25 +11,16 @@
 		update_parallax_contents()
 	return 1
 
+// Called after all of the atoms on shuttle are moved.
+/atom/movable/proc/afterShuttleMove()
+	return
+
+
 /obj/onShuttleMove()
 	if(invisibility >= INVISIBILITY_ABSTRACT)
 		return 0
 	. = ..()
 
-/obj/machinery/atmospherics/onShuttleMove()
-	. = ..()
-	for(DEVICE_TYPE_LOOP)
-		if(get_area(nodes[I]) != get_area(src))
-			nullifyNode(I)
-
-#define DIR_CHECK_TURF_AREA(X) (get_area(get_ranged_target_turf(src, X, 1)) != A)
-/obj/structure/cable/onShuttleMove()
-	. = ..()
-	var/A = get_area(src)
-	//cut cables on the edge
-	if(DIR_CHECK_TURF_AREA(NORTH) || DIR_CHECK_TURF_AREA(SOUTH) || DIR_CHECK_TURF_AREA(EAST) || DIR_CHECK_TURF_AREA(WEST))
-		cut_cable_from_powernet()
-#undef DIR_CHECK_TURF_AREA
 
 /atom/movable/light/onShuttleMove()
 	return 0

code/modules/shuttle/shuttle.dm

@@ -481,6 +481,21 @@
 	//move or squish anything in the way ship at destination
 	roadkill(L0, L1, S1.dir)
 
+
+	for(var/i in 1 to L0.len)
+		var/turf/T0 = L0[i]
+		if(!T0)
+			continue
+		var/turf/T1 = L1[i]
+		if(!T1)
+			continue
+		if(T0.type == T0.baseturf)
+			continue
+		for(var/atom/movable/AM in T0)
+			AM.beforeShuttleMove(T1, rotation)
+
+	var/list/moved_atoms = list()
+
 	for(var/i in 1 to L0.len)
 		var/turf/T0 = L0[i]
 		if(!T0)
@@ -502,7 +517,8 @@
 
 			//move mobile to new location
 			for(var/atom/movable/AM in T0)
-				AM.onShuttleMove(T1, rotation)
+				if(AM.onShuttleMove(T1, rotation))
+					moved_atoms += AM
 
 		if(rotation)
 			T1.shuttleRotate(rotation)
@@ -517,6 +533,10 @@
 		T0.CalculateAdjacentTurfs()
 		SSair.add_to_active(T0,1)
 
+	for(var/am in moved_atoms)
+		var/atom/movable/AM = am
+		AM.afterShuttleMove()
+
 	check_poddoors()
 	S1.last_dock_time = world.time