tank shuttle rotate

code/modules/atmospherics/machinery/atmosmachinery.dm

@@ -26,7 +26,7 @@
 	///Check if the object can be unwrenched
 	var/can_unwrench = FALSE
 	///Bitflag of the initialized directions (NORTH | SOUTH | EAST | WEST)
-	var/initialize_directions = 0
+	var/initialize_directions = NONE
 	///The color of the pipe
 	var/pipe_color = COLOR_VERY_LIGHT_GRAY
 	///What layer the pipe is in (from 1 to 5, default 3)
@@ -165,8 +165,7 @@ GLOBAL_REAL_VAR(atmos_machinery_default_armor) = list(BLUNT = 25, PUNCTURE = 10,
  * Return a list of the nodes that can connect to other machines, get called by atmos_init()
  */
 /obj/machinery/atmospherics/proc/get_node_connects()
-	var/list/node_connects = list()
-	node_connects.len = device_type
+	var/list/node_connects = new /list(device_type)
 
 	var/init_directions = get_init_directions()
 	for(var/i in 1 to device_type)

code/modules/atmospherics/machinery/components/tank.dm

@@ -31,6 +31,8 @@
 	///The image showing the gases inside of the tank
 	var/image/window
 
+	/// The open node directions of the tank, assuming that the tank is facing NORTH.
+	var/open_ports = NONE
 	/// The volume of the gas mixture
 	var/volume = 2500 //in liters
 	/// The max pressure of the gas mixture before damaging the tank
@@ -104,7 +106,8 @@
 
 	// Mapped in tanks should automatically connect to adjacent pipenets in the direction set in dir
 	if(mapload)
-		initialize_directions = dir
+		set_portdir_relative(dir, TRUE)
+		set_init_directions()
 
 	return INITIALIZE_HINT_LATELOAD
 
@@ -156,28 +159,60 @@
 	refresh_window()
 
 ///////////////////////////////////////////////////////////////////
-// Pipenet stuff
-
-/obj/machinery/atmospherics/components/tank/return_analyzable_air()
-	return air_contents
+// Port stuff
+
+/**
+ * Enables/Disables a port direction in var/open_ports. \
+ * Use this, then call set_init_directions() instead of setting initialize_directions directly \
+ * This system exists because tanks not having all initialize_directions set correctly breaks shuttle rotations
+ */
+/obj/machinery/atmospherics/components/tank/proc/set_portdir_relative(relative_port_dir, enable)
+	ASSERT(!isnull(enable))
+
+	// Rotate the given dir so that it's relative to north
+	var/port_dir
+	if(dir == NORTH) // We're already facing north, no rotation needed
+		port_dir = relative_port_dir
+	else
+		var/offnorth_angle = dir2angle(dir)
+		port_dir = turn(relative_port_dir, offnorth_angle)
 
-/obj/machinery/atmospherics/components/tank/return_airs_for_reconcilation(datum/pipeline/requester)
-	. = ..()
-	if(!air_contents)
+	if(enable)
+		open_ports |= port_dir
+	else
+		open_ports &= ~port_dir
+
+/**
+ * Toggles a port direction in var/open_ports \
+ * Use this, then call set_init_directions() instead of setting initialize_directions directly \
+ * This system exists because tanks not having all initialize_directions set correctly breaks shuttle rotations
+ */
+/obj/machinery/atmospherics/components/tank/proc/toggle_portdir_relative(relative_port_dir)
+	var/toggle = ((initialize_directions & relative_port_dir) ? FALSE : TRUE)
+	set_portdir_relative(relative_port_dir, toggle)
+
+/obj/machinery/atmospherics/components/tank/set_init_directions()
+	if(!open_ports)
+		initialize_directions = NONE
 		return
-	. += air_contents
 
-/obj/machinery/atmospherics/components/tank/return_pipenets_for_reconcilation(datum/pipeline/requester)
-	. = ..()
-	var/datum/merger/merge_group = GetMergeGroup(merger_id, merger_typecache)
-	for(var/obj/machinery/atmospherics/components/tank/tank as anything in merge_group.members)
-		. += tank.parents
+	//We're rotating open_ports relative to dir, and
+	//setting initialize_directions to that rotated dir
+	var/relative_port_dirs = NONE
+	var/dir_angle = dir2angle(dir)
+	for(var/cardinal in GLOB.cardinals)
+		var/current_dir = cardinal & open_ports
+		if(!current_dir)
+			continue
 
-/obj/machinery/atmospherics/components/tank/proc/toggle_side_port(new_dir)
-	if(initialize_directions & new_dir)
-		initialize_directions &= ~new_dir
-	else
-		initialize_directions |= new_dir
+		var/rotated_dir = turn(current_dir, -dir_angle)
+		relative_port_dirs |= rotated_dir
+
+	initialize_directions = relative_port_dirs
+
+/obj/machinery/atmospherics/components/tank/proc/toggle_side_port(port_dir)
+	toggle_portdir_relative(port_dir)
+	set_init_directions()
 
 	for(var/i in 1 to length(nodes))
 		var/obj/machinery/atmospherics/components/node = nodes[i]
@@ -200,6 +235,24 @@
 
 	update_parents()
 
+///////////////////////////////////////////////////////////////////
+// Pipenet stuff
+
+/obj/machinery/atmospherics/components/tank/return_analyzable_air()
+	return air_contents
+
+/obj/machinery/atmospherics/components/tank/return_airs_for_reconcilation(datum/pipeline/requester)
+	. = ..()
+	if(!air_contents)
+		return
+	. += air_contents
+
+/obj/machinery/atmospherics/components/tank/return_pipenets_for_reconcilation(datum/pipeline/requester)
+	. = ..()
+	var/datum/merger/merge_group = GetMergeGroup(merger_id, merger_typecache)
+	for(var/obj/machinery/atmospherics/components/tank/tank as anything in merge_group.members)
+		. += tank.parents
+
 ///////////////////////////////////////////////////////////////////
 // Merger handling
 

code/modules/shuttle/on_move.dm

@@ -208,18 +208,17 @@ All ShuttleMove procs go here
 	. = ..()
 	recharging_turf = get_step(loc, dir)
 
-/obj/machinery/atmospherics/afterShuttleMove(turf/oldT, list/movement_force, shuttle_dir, shuttle_preferred_direction, move_dir, rotation)
-	. = ..()
-	if(pipe_vision_img)
-		pipe_vision_img.loc = loc
-
 /obj/machinery/computer/auxiliary_base/afterShuttleMove(turf/oldT, list/movement_force, shuttle_dir, shuttle_preferred_direction, move_dir, rotation)
 	. = ..()
 	if(is_mining_level(z)) //Avoids double logging and landing on other Z-levels due to badminnery
 		SSblackbox.record_feedback("associative", "colonies_dropped", 1, list("x" = x, "y" = y, "z" = z))
 
 /obj/machinery/atmospherics/afterShuttleMove(turf/oldT, list/movement_force, shuttle_dir, shuttle_preferred_direction, move_dir, rotation)
 	. = ..()
+
+	if(pipe_vision_img)
+		pipe_vision_img.loc = loc
+
 	var/missing_nodes = FALSE
 	for(var/i in 1 to device_type)
 		if(nodes[i])

code/modules/shuttle/shuttle_rotate.dm

@@ -82,15 +82,23 @@ If ever any of these procs are useful for non-shuttles, rename it to proc/rotate
 /obj/machinery/atmospherics/shuttleRotate(rotation, params)
 	var/list/real_node_connect = get_node_connects()
 	for(var/i in 1 to device_type)
-		real_node_connect[i] = angle2dir(rotation+dir2angle(real_node_connect[i]))
+		var/node_dir = real_node_connect[i]
+		if(isnull(node_dir))
+			continue
+
+		real_node_connect[i] = turn(node_dir, -rotation)
 
 	. = ..()
 	set_init_directions()
 	var/list/supposed_node_connect = get_node_connects()
 	var/list/nodes_copy = nodes.Copy()
 
 	for(var/i in 1 to device_type)
-		var/new_pos = supposed_node_connect.Find(real_node_connect[i])
+		var/node_dir = real_node_connect[i]
+		if(isnull(node_dir))
+			continue
+
+		var/new_pos = supposed_node_connect.Find(node_dir)
 		nodes[new_pos] = nodes_copy[i]
 
 //prevents shuttles attempting to rotate this since it messes up sprites