Merge pull request #3578 from Citadel-Station-13/upstream-merge-31944

[MIRROR] Atmos construction rework again

code/__DEFINES/pipe_construction.dm

@@ -1,33 +1,10 @@
-/*
-PIPE CONSTRUCTION DEFINES
-Update these any time a path is changed
-Construction breaks otherwise
-*/
-
-//Pipes
-#define PIPE_SIMPLE				/obj/machinery/atmospherics/pipe/simple
-#define PIPE_MANIFOLD			/obj/machinery/atmospherics/pipe/manifold
-#define PIPE_4WAYMANIFOLD		/obj/machinery/atmospherics/pipe/manifold4w
-#define PIPE_HE					/obj/machinery/atmospherics/pipe/heat_exchanging/simple
-#define PIPE_HE_MANIFOLD		/obj/machinery/atmospherics/pipe/heat_exchanging/manifold
-#define PIPE_HE_4WAYMANIFOLD	/obj/machinery/atmospherics/pipe/heat_exchanging/manifold4w
-#define PIPE_JUNCTION			/obj/machinery/atmospherics/pipe/heat_exchanging/junction
-#define PIPE_LAYER_MANIFOLD		/obj/machinery/atmospherics/pipe/layer_manifold
-//Unary
-#define PIPE_CONNECTOR			/obj/machinery/atmospherics/components/unary/portables_connector
-#define PIPE_UVENT				/obj/machinery/atmospherics/components/unary/vent_pump
-#define PIPE_SCRUBBER			/obj/machinery/atmospherics/components/unary/vent_scrubber
-#define PIPE_INJECTOR			/obj/machinery/atmospherics/components/unary/outlet_injector
-#define PIPE_HEAT_EXCHANGE		/obj/machinery/atmospherics/components/unary/heat_exchanger
-//Binary
-#define PIPE_PUMP				/obj/machinery/atmospherics/components/binary/pump
-#define PIPE_PASSIVE_GATE		/obj/machinery/atmospherics/components/binary/passive_gate
-#define PIPE_VOLUME_PUMP		/obj/machinery/atmospherics/components/binary/volume_pump
-#define PIPE_MVALVE				/obj/machinery/atmospherics/components/binary/valve
-#define PIPE_DVALVE				/obj/machinery/atmospherics/components/binary/valve/digital
-//Trinary
-#define PIPE_GAS_FILTER			/obj/machinery/atmospherics/components/trinary/filter
-#define PIPE_GAS_MIXER			/obj/machinery/atmospherics/components/trinary/mixer
+//Construction Categories
+#define PIPE_BINARY			0 //2 directions: N/S, E/W
+#define PIPE_BENDABLE		1 //6 directions: N/S, E/W, N/E, N/W, S/E, S/W
+#define PIPE_TRINARY		2 //4 directions: N/E/S, E/S/W, S/W/N, W/N/E
+#define PIPE_TRIN_M			3 //8 directions: N->S+E, S->N+E, N->S+W, S->N+W, E->W+S, W->E+S, E->W+N, W->E+N
+#define PIPE_UNARY			4 //4 directions: N, S, E, W
+#define PIPE_QUAD			5 //1 directions: N/S/E/W
 
 //Disposal piping numbers - do NOT hardcode these, use the defines
 #define DISP_PIPE_STRAIGHT		0

code/game/machinery/pipe/construction.dm

@@ -10,7 +10,7 @@ Buildable meters
 /obj/item/pipe
 	name = "pipe"
 	desc = "A pipe."
-	var/pipe_type = 0
+	var/pipe_type
 	var/pipename
 	force = 7
 	throwforce = 7
@@ -19,35 +19,22 @@ Buildable meters
 	item_state = "buildpipe"
 	w_class = WEIGHT_CLASS_NORMAL
 	level = 2
-	var/flipped = FALSE
-	var/is_bent = FALSE
 	var/piping_layer = PIPING_LAYER_DEFAULT
+	var/RPD_type //TEMP: kill this once RPDs get a rewrite pls
 
-	var/static/list/pipe_types = list(
-		PIPE_SIMPLE, \
-		PIPE_LAYER_MANIFOLD, \
-		PIPE_MANIFOLD, \
-		PIPE_4WAYMANIFOLD, \
-		PIPE_HE, \
-		PIPE_HE_MANIFOLD, \
-		PIPE_HE_4WAYMANIFOLD, \
-		PIPE_JUNCTION, \
-		\
-		PIPE_CONNECTOR, \
-		PIPE_UVENT, \
-		PIPE_SCRUBBER, \
-		PIPE_INJECTOR, \
-		PIPE_HEAT_EXCHANGE, \
-		\
-		PIPE_PUMP, \
-		PIPE_PASSIVE_GATE, \
-		PIPE_VOLUME_PUMP, \
-		PIPE_MVALVE, \
-		PIPE_DVALVE, \
-		\
-		PIPE_GAS_FILTER, \
-		PIPE_GAS_MIXER, \
-	)
+/obj/item/pipe/directional
+	RPD_type = PIPE_UNARY
+/obj/item/pipe/binary
+	RPD_type = PIPE_BINARY
+/obj/item/pipe/binary/bendable
+	RPD_type = PIPE_BENDABLE
+/obj/item/pipe/trinary
+	RPD_type = PIPE_TRINARY
+/obj/item/pipe/trinary/flippable
+	RPD_type = PIPE_TRIN_M
+	var/flipped = FALSE
+/obj/item/pipe/quaternary
+	RPD_type = PIPE_QUAD
 
 /obj/item/pipe/examine(mob/user)
 	..()
@@ -55,35 +42,27 @@ Buildable meters
 
 /obj/item/pipe/Initialize(mapload, _pipe_type, _dir, obj/machinery/atmospherics/make_from)
 	if(make_from)
-		setDir(make_from.dir)
-		pipename = make_from.name
-		add_atom_colour(make_from.color, FIXED_COLOUR_PRIORITY)
-
-		if(make_from.type in pipe_types)
-			pipe_type = make_from.type
-			setPipingLayer(make_from.piping_layer)
-		else //make pipe_type a value we can work with
-			for(var/P in pipe_types)
-				if(istype(make_from, P))
-					pipe_type = P
-					break
-
-		var/obj/machinery/atmospherics/components/trinary/triP = make_from
-		if(istype(triP) && triP.flipped)
-			flipped = TRUE
-			setDir(turn(dir, -45))
+		make_from_existing(make_from)
 	else
 		pipe_type = _pipe_type
 		setDir(_dir)
 
-	if(_dir in GLOB.diagonals)
-		is_bent = TRUE
-
 	update()
-	pixel_x = rand(-5, 5)
-	pixel_y = rand(-5, 5)
+	pixel_x += rand(-5, 5)
+	pixel_y += rand(-5, 5)
 	return ..()
 
+/obj/item/pipe/proc/make_from_existing(obj/machinery/atmospherics/make_from)
+	setDir(make_from.dir)
+	pipename = make_from.name
+	add_atom_colour(make_from.color, FIXED_COLOUR_PRIORITY)
+	pipe_type = make_from.type
+
+/obj/item/pipe/trinary/flippable/make_from_existing(obj/machinery/atmospherics/components/trinary/make_from)
+	..()
+	if(make_from.flipped)
+		do_a_flip()
+
 /obj/item/pipe/dropped()
 	if(loc)
 		setPipingLayer(piping_layer)
@@ -91,73 +70,19 @@ Buildable meters
 
 /obj/item/pipe/proc/setPipingLayer(new_layer = PIPING_LAYER_DEFAULT)
 	var/obj/machinery/atmospherics/fakeA = get_pipe_cache(pipe_type)
-	var/nolayer = (fakeA.pipe_flags & PIPING_ALL_LAYER)
-	if(nolayer)
+
+	if(fakeA.pipe_flags & PIPING_ALL_LAYER)
 		new_layer = PIPING_LAYER_DEFAULT
 	piping_layer = new_layer
-	if(pipe_type != PIPE_LAYER_MANIFOLD)
-		pixel_x = (piping_layer - PIPING_LAYER_DEFAULT) * PIPING_LAYER_P_X
-		pixel_y = (piping_layer - PIPING_LAYER_DEFAULT) * PIPING_LAYER_P_Y
-		layer = initial(layer) + ((piping_layer - PIPING_LAYER_DEFAULT) * PIPING_LAYER_LCHANGE)
 
-//update the name and icon of the pipe item depending on the type
-GLOBAL_LIST_INIT(pipeID2State, list(
-	"[PIPE_SIMPLE]"			 = "simple", \
-	"[PIPE_MANIFOLD]"		 = "manifold", \
-	"[PIPE_LAYER_MANIFOLD]"	 = "layer_manifold", \
-	"[PIPE_4WAYMANIFOLD]"	 = "manifold4w", \
-	"[PIPE_HE]"				 = "he", \
-	"[PIPE_HE_MANIFOLD]"	 = "he_manifold", \
-	"[PIPE_HE_4WAYMANIFOLD]" = "he_manifold4w", \
-	"[PIPE_JUNCTION]"		 = "junction", \
-	\
-	"[PIPE_CONNECTOR]"		 = "connector", \
-	"[PIPE_UVENT]"			 = "uvent", \
-	"[PIPE_SCRUBBER]"		 = "scrubber", \
-	"[PIPE_INJECTOR]"		 = "injector", \
-	"[PIPE_HEAT_EXCHANGE]"	 = "heunary", \
-	\
-	"[PIPE_PUMP]"			 = "pump", \
-	"[PIPE_PASSIVE_GATE]"	 = "passivegate", \
-	"[PIPE_VOLUME_PUMP]"	 = "volumepump", \
-	"[PIPE_MVALVE]"			 = "mvalve", \
-	"[PIPE_DVALVE]"			 = "dvalve", \
-	\
-	"[PIPE_GAS_FILTER]"		 = "filter", \
-	"[PIPE_GAS_MIXER]"		 = "mixer", \
-))
+	pixel_x += (piping_layer - PIPING_LAYER_DEFAULT) * PIPING_LAYER_P_X
+	pixel_y += (piping_layer - PIPING_LAYER_DEFAULT) * PIPING_LAYER_P_Y
+	layer = initial(layer) + ((piping_layer - PIPING_LAYER_DEFAULT) * PIPING_LAYER_LCHANGE)
 
 /obj/item/pipe/proc/update()
-	var/list/nlist = list(\
-		"[PIPE_SIMPLE]" 		= "pipe", \
-		"[PIPE_SIMPLE]_b" 		= "bent pipe", \
-		"[PIPE_MANIFOLD]" 		= "manifold", \
-		"[PIPE_LAYER_MANIFOLD]" = "layer manifold", \
-		"[PIPE_4WAYMANIFOLD]" 	= "4-way manifold", \
-		"[PIPE_HE]" 			= "h/e pipe", \
-		"[PIPE_HE]_b" 			= "bent h/e pipe", \
-		"[PIPE_HE_MANIFOLD]"	= "h/e manifold", \
-		"[PIPE_HE_4WAYMANIFOLD]"= "h/e 4-way manifold", \
-		"[PIPE_JUNCTION]" 		= "junction", \
-		\
-		"[PIPE_CONNECTOR]" 		= "connector", \
-		"[PIPE_UVENT]" 			= "vent", \
-		"[PIPE_SCRUBBER]" 		= "scrubber", \
-		"[PIPE_INJECTOR]"		= "injector", \
-		"[PIPE_HEAT_EXCHANGE]" 	= "heat exchanger", \
-		\
-		"[PIPE_PUMP]" 			= "pump", \
-		"[PIPE_PASSIVE_GATE]" 	= "passive gate", \
-		"[PIPE_VOLUME_PUMP]" 	= "volume pump", \
-		"[PIPE_MVALVE]" 		= "manual valve", \
-		"[PIPE_DVALVE]" 		= "digital valve", \
-		\
-		"[PIPE_GAS_FILTER]" 	= "gas filter", \
-		"[PIPE_GAS_MIXER]" 		= "gas mixer", \
-		)
-	//fix_pipe_type()
-	name = nlist["[pipe_type][is_bent ? "_b" : ""]"] + " fitting"
-	icon_state = GLOB.pipeID2State["[pipe_type]"]
+	var/obj/machinery/atmospherics/A = get_pipe_cache(pipe_type)
+	name = "[A.name] fitting"
+	icon_state = A.pipe_state
 
 // rotate the pipe item clockwise
 
@@ -170,11 +95,8 @@ GLOBAL_LIST_INIT(pipeID2State, list(
 		return
 
 	setDir(turn(dir, -90))
-
 	fixdir()
 
-	return
-
 /obj/item/pipe/verb/flip()
 	set category = "Object"
 	set name = "Flip Pipe"
@@ -183,16 +105,15 @@ GLOBAL_LIST_INIT(pipeID2State, list(
 	if ( usr.stat || usr.restrained() || !usr.canmove )
 		return
 
-	if (pipe_type in list(PIPE_GAS_FILTER, PIPE_GAS_MIXER))
-		setDir(turn(dir, flipped )? 45 : -45)
-		flipped = !flipped
-		return
+	do_a_flip()
 
+/obj/item/pipe/proc/do_a_flip()
 	setDir(turn(dir, -180))
-
 	fixdir()
 
-	return
+/obj/item/pipe/trinary/flippable/do_a_flip()
+	setDir(turn(dir, flipped ? 45 : -45))
+	flipped = !flipped
 
 /obj/item/pipe/AltClick(mob/user)
 	..()
@@ -207,21 +128,21 @@ GLOBAL_LIST_INIT(pipeID2State, list(
 /obj/item/pipe/Move()
 	var/old_dir = dir
 	..()
-	setDir(old_dir )//pipes changing direction when moved is just annoying and buggy
-
-/obj/item/pipe/proc/unflip(direction)
-	if(direction in GLOB.diagonals)
-		return turn(direction, 45)
-
-	return direction
+	setDir(old_dir) //pipes changing direction when moved is just annoying and buggy
 
 //Helper to clean up dir
 /obj/item/pipe/proc/fixdir()
-	if((pipe_type in list (PIPE_SIMPLE, PIPE_HE, PIPE_MVALVE, PIPE_DVALVE, PIPE_LAYER_MANIFOLD)) && !is_bent)
-		if(dir==SOUTH)
-			setDir(NORTH)
-		else if(dir==WEST)
-			setDir(EAST)
+	return
+
+/obj/item/pipe/binary/fixdir()
+	if(dir == SOUTH)
+		setDir(NORTH)
+	else if(dir == WEST)
+		setDir(EAST)
+
+/obj/item/pipe/trinary/flippable/fixdir()
+	if(dir in GLOB.diagonals)
+		setDir(turn(dir, 45))
 
 /obj/item/pipe/attack_self(mob/user)
 	return rotate()
@@ -245,16 +166,14 @@ GLOBAL_LIST_INIT(pipeID2State, list(
 	add_fingerprint(user)
 
 	fixdir()
-	if(pipe_type in list(PIPE_GAS_MIXER, PIPE_GAS_FILTER))
-		setDir(unflip(dir))
 
 	var/obj/machinery/atmospherics/fakeA = get_pipe_cache(pipe_type, dir)
 
 	for(var/obj/machinery/atmospherics/M in loc)
-		if((M.pipe_flags & PIPING_ONE_PER_TURF) && (fakeA.pipe_flags & PIPING_ONE_PER_TURF))	//Only one dense/requires density object per tile, eg connectors/cryo/heater/coolers.
+		if((M.pipe_flags & fakeA.pipe_flags & PIPING_ONE_PER_TURF))	//Only one dense/requires density object per tile, eg connectors/cryo/heater/coolers.
 			to_chat(user, "<span class='warning'>Something is hogging the tile!</span>")
 			return TRUE
-		if((M.piping_layer != piping_layer) && !((M.pipe_flags & PIPING_ALL_LAYER) || (pipe_type == PIPE_LAYER_MANIFOLD)))
+		if((M.piping_layer != piping_layer) && !((M.pipe_flags | fakeA.pipe_flags) & PIPING_ALL_LAYER)) //don't continue if either pipe goes across all layers
 			continue
 		if(M.GetInitDirections() & fakeA.GetInitDirections())	// matches at least one direction on either type of pipe
 			to_chat(user, "<span class='warning'>There is already a pipe at that location!</span>")
@@ -262,16 +181,8 @@ GLOBAL_LIST_INIT(pipeID2State, list(
 	// no conflicts found
 
 	var/obj/machinery/atmospherics/A = new pipe_type(loc)
-	A.setDir(dir)
-	A.SetInitDirections()
-
-	if(pipename)
-		A.name = pipename
-
-	var/obj/machinery/atmospherics/components/trinary/T = A
-	if(istype(T))
-		T.flipped = flipped
-	A.on_construction(pipe_type, color, piping_layer)
+	build_pipe(A)
+	A.on_construction(color, piping_layer)
 
 	playsound(src, W.usesound, 50, 1)
 	user.visible_message( \
@@ -281,20 +192,28 @@ GLOBAL_LIST_INIT(pipeID2State, list(
 
 	qdel(src)
 
-/obj/item/pipe/suicide_act(mob/user)
-	if(pipe_type in list(PIPE_PUMP, PIPE_PASSIVE_GATE, PIPE_VOLUME_PUMP))
-		user.visible_message("<span class='suicide'>[user] shoves [src] in [user.p_their()] mouth and turns it on!  It looks like [user.p_theyre()] trying to commit suicide!</span>")
-		if(iscarbon(user))
-			var/mob/living/carbon/C = user
-			for(var/i=1 to 20)
-				C.vomit(0, TRUE, FALSE, 4, FALSE)
-				if(prob(20))
-					C.spew_organ()
-				sleep(5)
-			C.blood_volume = 0
-		return(OXYLOSS|BRUTELOSS)
-	else
-		return ..()
+/obj/item/pipe/proc/build_pipe(obj/machinery/atmospherics/A)
+	A.setDir(dir)
+	A.SetInitDirections()
+
+	if(pipename)
+		A.name = pipename
+
+/obj/item/pipe/trinary/flippable/build_pipe(obj/machinery/atmospherics/components/trinary/T)
+	..()
+	T.flipped = flipped
+
+/obj/item/pipe/directional/suicide_act(mob/user)
+	user.visible_message("<span class='suicide'>[user] shoves [src] in [user.p_their()] mouth and turns it on! It looks like [user.p_theyre()] trying to commit suicide!</span>")
+	if(iscarbon(user))
+		var/mob/living/carbon/C = user
+		for(var/i=1 to 20)
+			C.vomit(0, TRUE, FALSE, 4, FALSE)
+			if(prob(20))
+				C.spew_organ()
+			sleep(5)
+		C.blood_volume = 0
+	return(OXYLOSS|BRUTELOSS)
 
 /obj/item/pipe_meter
 	name = "meter"
@@ -332,4 +251,3 @@ GLOBAL_LIST_INIT(pipeID2State, list(
 	piping_layer = new_layer
 	pixel_x = (new_layer - PIPING_LAYER_DEFAULT) * PIPING_LAYER_P_X
 	pixel_y = (new_layer - PIPING_LAYER_DEFAULT) * PIPING_LAYER_P_Y
-

code/game/machinery/pipe/pipe_dispenser.dm

@@ -17,30 +17,30 @@
 	var/dat = {"
 PIPING LAYER: <A href='?src=\ref[src];layer_down=1'>--</A><b>[piping_layer]</b><A href='?src=\ref[src];layer_up=1'>++</A><BR>
 <b>Pipes:</b><BR>
-<A href='?src=\ref[src];make=[PIPE_SIMPLE];dir=1'>Pipe</A><BR>
-<A href='?src=\ref[src];make=[PIPE_SIMPLE];dir=5'>Bent Pipe</A><BR>
-<A href='?src=\ref[src];make=[PIPE_MANIFOLD];dir=1'>Manifold</A><BR>
-<A href='?src=\ref[src];make=[PIPE_LAYER_MANIFOLD];dir=1'>Layer Manifold</A><BR>
-<A href='?src=\ref[src];make=[PIPE_4WAYMANIFOLD];dir=1'>4-Way Manifold</A><BR>
-<A href='?src=\ref[src];make=[PIPE_MVALVE];dir=1'>Manual Valve</A><BR>
-<A href='?src=\ref[src];make=[PIPE_DVALVE];dir=1'>Digital Valve</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/pipe/simple];dir=1'>Pipe</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/pipe/simple];dir=5'>Bent Pipe</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/pipe/manifold];dir=1'>Manifold</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/pipe/layer_manifold];dir=1'>Layer Manifold</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/pipe/manifold4w];dir=1'>4-Way Manifold</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/binary/valve];dir=1'>Manual Valve</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/binary/valve/digital];dir=1'>Digital Valve</A><BR>
 <b>Devices:</b><BR>
-<A href='?src=\ref[src];make=[PIPE_CONNECTOR];dir=1'>Connector</A><BR>
-<A href='?src=\ref[src];make=[PIPE_UVENT];dir=1'>Vent</A><BR>
-<A href='?src=\ref[src];make=[PIPE_PUMP];dir=1'>Gas Pump</A><BR>
-<A href='?src=\ref[src];make=[PIPE_PASSIVE_GATE];dir=1'>Passive Gate</A><BR>
-<A href='?src=\ref[src];make=[PIPE_VOLUME_PUMP];dir=1'>Volume Pump</A><BR>
-<A href='?src=\ref[src];make=[PIPE_SCRUBBER];dir=1'>Scrubber</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/unary/portables_connector];dir=1'>Connector</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/unary/vent_pump];dir=1'>Vent</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/binary/pump];dir=1'>Gas Pump</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/binary/passive_gate];dir=1'>Passive Gate</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/binary/volume_pump];dir=1'>Volume Pump</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/unary/vent_scrubber];dir=1'>Scrubber</A><BR>
 <A href='?src=\ref[src];makemeter=1'>Meter</A><BR>
-<A href='?src=\ref[src];make=[PIPE_GAS_FILTER];dir=1'>Gas Filter</A><BR>
-<A href='?src=\ref[src];make=[PIPE_GAS_MIXER];dir=1'>Gas Mixer</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/trinary/filter];dir=1'>Gas Filter</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/trinary/mixer];dir=1'>Gas Mixer</A><BR>
 <b>Heat exchange:</b><BR>
-<A href='?src=\ref[src];make=[PIPE_HE];dir=1'>Pipe</A><BR>
-<A href='?src=\ref[src];make=[PIPE_HE];dir=5'>Bent Pipe</A><BR>
-<A href='?src=\ref[src];make=[PIPE_HE_MANIFOLD];dir=1'>Manifold</A><BR>
-<A href='?src=\ref[src];make=[PIPE_HE_4WAYMANIFOLD];dir=1'>4-Way Manifold</A><BR>
-<A href='?src=\ref[src];make=[PIPE_JUNCTION];dir=1'>Junction</A><BR>
-<A href='?src=\ref[src];make=[PIPE_HEAT_EXCHANGE];dir=1'>Heat Exchanger</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/pipe/heat_exchanging/simple];dir=1'>Pipe</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/pipe/heat_exchanging/simple];dir=5'>Bent Pipe</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/pipe/heat_exchanging/manifold];dir=1'>Manifold</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/pipe/heat_exchanging/manifold4w];dir=1'>4-Way Manifold</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/pipe/heat_exchanging/junction];dir=1'>Junction</A><BR>
+<A href='?src=\ref[src];make=[/obj/machinery/atmospherics/components/unary/heat_exchanger];dir=1'>Heat Exchanger</A><BR>
 "}
 
 

code/game/objects/items/RPD.dm

@@ -4,12 +4,6 @@
 CONTAINS:
 RPD
 */
-#define PIPE_BINARY		0
-#define PIPE_BENDABLE	1
-#define PIPE_TRINARY	2
-#define PIPE_TRIN_M		3
-#define PIPE_UNARY		4
-#define PIPE_QUAD		5
 
 #define PAINT_MODE -2
 #define EATING_MODE -1
@@ -22,23 +16,29 @@ RPD
 
 /datum/pipe_info
 	var/id=-1
-	var/categoryId = CATEGORY_ATMOS
+	var/categoryId
 	var/dir=SOUTH
 	var/dirtype = PIPE_BENDABLE
-	var/icon = 'icons/obj/atmospherics/pipes/pipe_item.dmi'
-	var/icon_state=""
+	var/icon
+	var/icon_state
 	var/selected=0
 
-/datum/pipe_info/New(pid,direction,dt)
-	id=pid
-	icon_state=GLOB.pipeID2State["[pid]"]
-	dir = direction
-	dirtype=dt
+/datum/pipe_info/pipe
+	categoryId = CATEGORY_ATMOS
+	icon = 'icons/obj/atmospherics/pipes/pipe_item.dmi'
+
+/datum/pipe_info/pipe/New(obj/machinery/atmospherics/path)
+	id = path
+	icon_state = initial(path.pipe_state)
+	dirtype = initial(path.construction_type)
 
 /datum/pipe_info/proc/Render(dispenser,label)
+
+/datum/pipe_info/pipe/Render(dispenser,label,dir=NORTH)
 	return "<li><a href='?src=\ref[dispenser];makepipe=[id];dir=[dir];type=[dirtype]'>[label]</a></li>"
 
 /datum/pipe_info/meter
+	categoryId = CATEGORY_ATMOS
 	icon = 'icons/obj/atmospherics/pipes/simple.dmi'
 	icon_state = "meterX"
 
@@ -64,7 +64,6 @@ GLOBAL_LIST_INIT(disposalpipeID2State, list(
 /datum/pipe_info/disposal
 	categoryId = CATEGORY_DISPOSALS
 	icon = 'icons/obj/atmospherics/pipes/disposal.dmi'
-	icon_state = "meterX"
 
 /datum/pipe_info/disposal/New(var/pid,var/dt)
 	id=pid
@@ -80,33 +79,31 @@ GLOBAL_LIST_INIT(disposalpipeID2State, list(
 //find these defines in code\game\machinery\pipe\consruction.dm
 GLOBAL_LIST_INIT(RPD_recipes, list(
 	"Pipes" = list(
-		"Pipe"				= new /datum/pipe_info(PIPE_SIMPLE,				1,	PIPE_BENDABLE),
-		//"Bent Pipe"		= new /datum/pipe_info(PIPE_SIMPLE,	 			5,	PIPE_BENT),
-		"Manifold"			= new /datum/pipe_info(PIPE_MANIFOLD, 			1,	PIPE_TRINARY),
-		"Manual Valve"		= new /datum/pipe_info(PIPE_MVALVE, 			1,	PIPE_BINARY),
-		"Digital Valve"		= new /datum/pipe_info(PIPE_DVALVE,				1,	PIPE_BINARY),
-		"4-Way Manifold"	= new /datum/pipe_info(PIPE_4WAYMANIFOLD,		1,	PIPE_QUAD),
-		"Layer Manifold"	= new /datum/pipe_info(PIPE_LAYER_MANIFOLD,		1,	PIPE_BINARY),
+		"Pipe"				= new /datum/pipe_info/pipe(/obj/machinery/atmospherics/pipe/simple),
+		"Manifold"			= new /datum/pipe_info/pipe(/obj/machinery/atmospherics/pipe/manifold),
+		"Manual Valve"		= new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/binary/valve),
+		"Digital Valve"		= new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/binary/valve/digital),
+		"4-Way Manifold"	= new /datum/pipe_info/pipe(/obj/machinery/atmospherics/pipe/manifold4w),
+		"Layer Manifold"	= new /datum/pipe_info/pipe(/obj/machinery/atmospherics/pipe/layer_manifold),
 	),
-	"Devices"=list(
-		"Connector"      = new /datum/pipe_info(PIPE_CONNECTOR,			1, PIPE_UNARY),
-		"Unary Vent"     = new /datum/pipe_info(PIPE_UVENT,				1, PIPE_UNARY),
-		"Gas Pump"       = new /datum/pipe_info(PIPE_PUMP,				1, PIPE_UNARY),
-		"Passive Gate"   = new /datum/pipe_info(PIPE_PASSIVE_GATE,		1, PIPE_UNARY),
-		"Volume Pump"    = new /datum/pipe_info(PIPE_VOLUME_PUMP,		1, PIPE_UNARY),
-		"Scrubber"       = new /datum/pipe_info(PIPE_SCRUBBER,			1, PIPE_UNARY),
-		"Injector"       = new /datum/pipe_info(PIPE_INJECTOR,     		1, PIPE_UNARY),
+	"Devices" = list(
+		"Connector"      = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/unary/portables_connector),
+		"Unary Vent"     = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/unary/vent_pump),
+		"Gas Pump"       = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/binary/pump),
+		"Passive Gate"   = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/binary/passive_gate),
+		"Volume Pump"    = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/binary/volume_pump),
+		"Scrubber"       = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/unary/vent_scrubber),
+		"Injector"       = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/unary/outlet_injector),
 		"Meter"          = new /datum/pipe_info/meter(),
-		"Gas Filter"     = new /datum/pipe_info(PIPE_GAS_FILTER,		1, PIPE_TRIN_M),
-		"Gas Mixer"      = new /datum/pipe_info(PIPE_GAS_MIXER,			1, PIPE_TRIN_M),
+		"Gas Filter"     = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/trinary/filter),
+		"Gas Mixer"      = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/trinary/mixer),
 	),
 	"Heat Exchange" = list(
-		"Pipe"           = new /datum/pipe_info(PIPE_HE,				1, PIPE_BENDABLE),
-		//"Bent Pipe"      = new /datum/pipe_info(PIPE_HE,				5, PIPE_BENT),
-		"Manifold"       = new /datum/pipe_info(PIPE_HE_MANIFOLD, 		1, PIPE_TRINARY),
-		"4-Way Manifold" = new /datum/pipe_info(PIPE_HE_4WAYMANIFOLD,	1, PIPE_QUAD),
-		"Junction"       = new /datum/pipe_info(PIPE_JUNCTION,			1, PIPE_UNARY),
-		"Heat Exchanger" = new /datum/pipe_info(PIPE_HEAT_EXCHANGE,		1, PIPE_UNARY),
+		"Pipe"           = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/pipe/heat_exchanging/simple),
+		"Manifold"       = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/pipe/heat_exchanging/manifold),
+		"4-Way Manifold" = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/pipe/heat_exchanging/manifold4w),
+		"Junction"       = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/pipe/heat_exchanging/junction),
+		"Heat Exchanger" = new /datum/pipe_info/pipe(/obj/machinery/atmospherics/components/unary/heat_exchanger),
 	),
 	"Disposal Pipes" = list(
 		"Pipe"          = new /datum/pipe_info/disposal(DISP_PIPE_STRAIGHT,	PIPE_BINARY),
@@ -120,6 +117,7 @@ GLOBAL_LIST_INIT(RPD_recipes, list(
 		"Sort Junction" = new /datum/pipe_info/disposal(DISP_SORTJUNCTION,	PIPE_TRINARY),
 	)
 ))
+
 /obj/item/pipe_dispenser
 	name = "Rapid Piping Device (RPD)"
 	desc = "A device used to rapidly pipe things."
@@ -137,7 +135,7 @@ GLOBAL_LIST_INIT(RPD_recipes, list(
 	resistance_flags = FIRE_PROOF
 	var/datum/effect_system/spark_spread/spark_system
 	var/working = 0
-	var/p_type = PIPE_SIMPLE
+	var/p_type = /obj/machinery/atmospherics/pipe/simple
 	var/p_conntype = PIPE_BENDABLE
 	var/p_dir = 1
 	var/p_flipped = 0
@@ -201,7 +199,7 @@ GLOBAL_LIST_INIT(RPD_recipes, list(
 	if(screen == CATEGORY_ATMOS)
 		dat += "<span class='linkOn'>Atmospherics</span> <A href='?src=\ref[src];screen=[CATEGORY_DISPOSALS];dmake=0;type=0'>Disposals</A><BR>"
 	else if(screen == CATEGORY_DISPOSALS)
-		dat += "<A href='?src=\ref[src];screen=[CATEGORY_ATMOS];makepipe=0;dir=1;type=0'>Atmospherics</A> <span class='linkOn'>Disposals</span><BR>"
+		dat += "<A href='?src=\ref[src];screen=[CATEGORY_ATMOS];makepipe=[/obj/machinery/atmospherics/pipe/simple];dir=1;type=0'>Atmospherics</A> <span class='linkOn'>Disposals</span><BR>"
 	var/generated_layer_list = ""
 	var/layers_total = PIPING_LAYER_MAX - PIPING_LAYER_MIN + 1
 	for(var/iter = PIPING_LAYER_MIN, iter <= layers_total, iter++)
@@ -220,9 +218,9 @@ GLOBAL_LIST_INIT(RPD_recipes, list(
 			var/datum/pipe_info/I = cat[label]
 			var/found=0
 			if(I.id == p_type)
-				if((p_class == ATMOS_MODE || p_class == METER_MODE) && (I.type == /datum/pipe_info || I.type == /datum/pipe_info/meter))
+				if((p_class == ATMOS_MODE || p_class == METER_MODE) && (istype(I, /datum/pipe_info/pipe) || istype(I, /datum/pipe_info/meter)))
 					found=1
-				else if(p_class == DISPOSALS_MODE && I.type==/datum/pipe_info/disposal)
+				else if(p_class == DISPOSALS_MODE && istype(I, /datum/pipe_info/disposal))
 					found=1
 			if(found)
 				preview=new /icon(I.icon,I.icon_state)
@@ -510,7 +508,8 @@ GLOBAL_LIST_INIT(RPD_recipes, list(
 	if(href_list["makepipe"])
 		p_type = text2path(href_list["makepipe"])
 		p_dir = text2num(href_list["dir"])
-		p_conntype = text2num(href_list["type"])
+		var/obj/item/pipe/path = text2path(href_list["type"])
+		p_conntype = initial(path.RPD_type)
 		p_class = ATMOS_MODE
 		spark_system.start()
 		playsound(get_turf(src), 'sound/effects/pop.ogg', 50, 0)
@@ -581,7 +580,9 @@ GLOBAL_LIST_INIT(RPD_recipes, list(
 			if(do_after(user, 2, target = A))
 				activate()
 				var/obj/item/pipe/P = new(A, queued_p_type, queued_p_dir)
-				P.flipped = queued_p_flipped
+				if(queued_p_flipped)
+					var/obj/item/pipe/trinary/flippable/F = P
+					F.flipped = queued_p_flipped
 				P.update()
 				P.add_fingerprint(usr)
 				if(!isnull(temp_piping_layer))
@@ -627,12 +628,6 @@ GLOBAL_LIST_INIT(RPD_recipes, list(
 /obj/item/pipe_dispenser/proc/activate()
 	playsound(get_turf(src), 'sound/items/deconstruct.ogg', 50, 1)
 
-#undef PIPE_BINARY
-#undef PIPE_BENT
-#undef PIPE_TRINARY
-#undef PIPE_TRIN_M
-#undef PIPE_UNARY
-#undef PIPE_QUAD
 #undef PAINT_MODE
 #undef EATING_MODE
 #undef ATMOS_MODE

code/modules/atmospherics/machinery/atmosmachinery.dm

@@ -36,6 +36,9 @@ Pipelines + Other Objects -> Pipe network
 	var/device_type = 0
 	var/list/obj/machinery/atmospherics/nodes
 
+	var/construction_type
+	var/pipe_state //icon_state as a pipe item
+
 /obj/machinery/atmospherics/examine(mob/user)
 	..()
 	if(is_type_in_list(src, GLOB.ventcrawl_machinery) && isliving(user))
@@ -239,7 +242,7 @@ Pipelines + Other Objects -> Pipe network
 /obj/machinery/atmospherics/deconstruct(disassembled = TRUE)
 	if(!(flags_1 & NODECONSTRUCT_1))
 		if(can_unwrench)
-			var/obj/item/pipe/stored = new(loc, piping_layer, dir, src)
+			var/obj/item/pipe/stored = new construction_type(loc, null, dir, src)
 			stored.setPipingLayer(piping_layer)
 			if(!disassembled)
 				stored.obj_integrity = stored.max_integrity * 0.5
@@ -271,7 +274,7 @@ Pipelines + Other Objects -> Pipe network
 		if(unconnected & direction)
 			underlays += getpipeimage('icons/obj/atmospherics/components/binary_devices.dmi', "pipe_exposed", direction)
 
-/obj/machinery/atmospherics/on_construction(pipe_type, obj_color, set_layer)
+/obj/machinery/atmospherics/on_construction(obj_color, set_layer)
 	if(can_unwrench)
 		add_atom_colour(obj_color, FIXED_COLOUR_PRIORITY)
 		pipe_color = obj_color

code/modules/atmospherics/machinery/components/binary_devices/passive_gate.dm

@@ -21,6 +21,9 @@ Passive gate is similar to the regular pump except:
 	var/id = null
 	var/datum/radio_frequency/radio_connection
 
+	construction_type = /obj/item/pipe/directional
+	pipe_state = "passivegate"
+
 /obj/machinery/atmospherics/components/binary/passive_gate/Destroy()
 	SSradio.remove_object(src,frequency)
 	return ..()
@@ -167,4 +170,3 @@ Passive gate is similar to the regular pump except:
 	if(. && on)
 		to_chat(user, "<span class='warning'>You cannot unwrench [src], turn it off first!</span>")
 		return FALSE
-

code/modules/atmospherics/machinery/components/binary_devices/pump.dm

@@ -26,6 +26,9 @@ Thus, the two variables affect pump operation are set in New():
 	var/id = null
 	var/datum/radio_frequency/radio_connection
 
+	construction_type = /obj/item/pipe/directional
+	pipe_state = "pump"
+
 /obj/machinery/atmospherics/components/binary/pump/on
 	on = TRUE
 

code/modules/atmospherics/machinery/components/binary_devices/valve.dm

@@ -15,6 +15,9 @@ It's like a regular ol' straight pipe, but you can turn it on and off.
 	var/open = FALSE
 	var/valve_type = "m" //lets us have a nice, clean, OOP update_icon_nopipes()
 
+	construction_type = /obj/item/pipe/binary
+	pipe_state = "mvalve"
+
 /obj/machinery/atmospherics/components/binary/valve/open
 	open = TRUE
 
@@ -65,6 +68,7 @@ It's like a regular ol' straight pipe, but you can turn it on and off.
 	desc = "A digitally controlled valve."
 	icon_state = "dvalve_map"
 	valve_type = "d"
+	pipe_state = "dvalve"
 
 /obj/machinery/atmospherics/components/binary/valve/digital/attack_ai(mob/user)
 	return src.attack_hand(user)

code/modules/atmospherics/machinery/components/binary_devices/volume_pump.dm

@@ -26,6 +26,9 @@ Thus, the two variables affect pump operation are set in New():
 	var/id = null
 	var/datum/radio_frequency/radio_connection
 
+	construction_type = /obj/item/pipe/directional
+	pipe_state = "volumepump"
+
 /obj/machinery/atmospherics/components/binary/volume_pump/Destroy()
 	SSradio.remove_object(src,frequency)
 	return ..()

code/modules/atmospherics/machinery/components/trinary_devices/filter.dm

@@ -10,6 +10,9 @@
 	var/frequency = 0
 	var/datum/radio_frequency/radio_connection
 
+	construction_type = /obj/item/pipe/trinary/flippable
+	pipe_state = "filter"
+
 /obj/machinery/atmospherics/components/trinary/filter/flipped
 	icon_state = "filter_off_f"
 	flipped = TRUE

code/modules/atmospherics/machinery/components/trinary_devices/mixer.dm

@@ -12,6 +12,9 @@
 	var/node1_concentration = 0.5
 	var/node2_concentration = 0.5
 
+	construction_type = /obj/item/pipe/trinary/flippable
+	pipe_state = "mixer"
+
 	//node 3 is the outlet, nodes 1 & 2 are intakes
 
 /obj/machinery/atmospherics/components/trinary/mixer/flipped
@@ -171,4 +174,3 @@
 	if(. && on && is_operational())
 		to_chat(user, "<span class='warning'>You cannot unwrench [src], turn it off first!</span>")
 		return FALSE
-

code/modules/atmospherics/machinery/components/unary_devices/heat_exchanger.dm

@@ -12,6 +12,8 @@
 	var/obj/machinery/atmospherics/components/unary/heat_exchanger/partner = null
 	var/update_cycle
 
+	pipe_state = "heunary"
+
 /obj/machinery/atmospherics/components/unary/heat_exchanger/update_icon()
 	if(NODE1)
 		icon_state = "he_intact"

code/modules/atmospherics/machinery/components/unary_devices/outlet_injector.dm

@@ -18,6 +18,8 @@
 	level = 1
 	layer = GAS_SCRUBBER_LAYER
 
+	pipe_state = "injector"
+
 /obj/machinery/atmospherics/components/unary/outlet_injector/Destroy()
 	SSradio.remove_object(src,frequency)
 	return ..()
@@ -188,4 +190,3 @@
 	if(. && on && is_operational())
 		to_chat(user, "<span class='warning'>You cannot unwrench [src], turn it off first!</span>")
 		return FALSE
-

code/modules/atmospherics/machinery/components/unary_devices/portables_connector.dm

@@ -9,6 +9,7 @@
 	level = 0
 	layer = GAS_FILTER_LAYER
 	pipe_flags = PIPING_ONE_PER_TURF
+	pipe_state = "connector"
 
 /obj/machinery/atmospherics/components/unary/portables_connector/New()
 	..()

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

@@ -4,6 +4,7 @@
 	initialize_directions = SOUTH
 	device_type = UNARY
 	pipe_flags = PIPING_ONE_PER_TURF
+	construction_type = /obj/item/pipe/directional
 
 /obj/machinery/atmospherics/components/unary/SetInitDirections()
 	initialize_directions = dir

code/modules/atmospherics/machinery/components/unary_devices/vent_pump.dm

@@ -31,6 +31,8 @@
 	var/radio_filter_out
 	var/radio_filter_in
 
+	pipe_state = "uvent"
+
 /obj/machinery/atmospherics/components/unary/vent_pump/on
 	on = TRUE
 	icon_state = "vent_map_on"

code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm

@@ -34,6 +34,8 @@
 	var/radio_filter_out
 	var/radio_filter_in
 
+	pipe_state = "scrubber"
+
 /obj/machinery/atmospherics/components/unary/vent_scrubber/New()
 	..()
 	if(!id_tag)

code/modules/atmospherics/machinery/pipes/heat_exchange/junction.dm

@@ -13,6 +13,9 @@
 	initialize_directions_he = SOUTH
 
 	device_type = BINARY
+	
+	construction_type = /obj/item/pipe/directional
+	pipe_state = "junction"
 
 /obj/machinery/atmospherics/pipe/heat_exchanging/junction/SetInitDirections()
 	switch(dir)
@@ -43,4 +46,4 @@
 				return 0
 			init_dir = H.initialize_directions_he
 	if(init_dir & get_dir(target,src))
-		return 1
+		return 1

code/modules/atmospherics/machinery/pipes/heat_exchange/manifold.dm

@@ -10,6 +10,9 @@
 
 	device_type = TRINARY
 
+	construction_type = /obj/item/pipe/trinary
+	pipe_state = "he_manifold"
+
 /obj/machinery/atmospherics/pipe/heat_exchanging/manifold/SetInitDirections()
 	switch(dir)
 		if(NORTH)
@@ -44,6 +47,9 @@
 
 	device_type = QUATERNARY
 
+	construction_type = /obj/item/pipe/quaternary
+	pipe_state = "he_manifold4w"
+
 /obj/machinery/atmospherics/pipe/heat_exchanging/manifold4w/SetInitDirections()
 	initialize_directions_he = initial(initialize_directions_he)
 
@@ -57,4 +63,4 @@
 	//Add non-broken pieces
 	for(DEVICE_TYPE_LOOP)
 		if(NODE_I)
-			add_overlay(getpipeimage('icons/obj/atmospherics/pipes/heat.dmi', "manifold_intact[invis]", get_dir(src, NODE_I)))
+			add_overlay(getpipeimage('icons/obj/atmospherics/pipes/heat.dmi', "manifold_intact[invis]", get_dir(src, NODE_I)))

code/modules/atmospherics/machinery/pipes/heat_exchange/simple.dm

@@ -9,6 +9,9 @@
 
 	device_type = BINARY
 
+	construction_type = /obj/item/pipe/binary/bendable
+	pipe_state = "he"
+
 /obj/machinery/atmospherics/pipe/heat_exchanging/simple/SetInitDirections()
 	if(dir in GLOB.diagonals)
 		initialize_directions_he = dir
@@ -30,4 +33,4 @@
 
 /obj/machinery/atmospherics/pipe/heat_exchanging/simple/update_icon()
 	normalize_dir()
-	..()
+	..()

code/modules/atmospherics/machinery/pipes/layermanifold.dm

@@ -11,6 +11,8 @@
 	volume = 260
 	var/list/front_nodes
 	var/list/back_nodes
+	construction_type = /obj/item/pipe/binary
+	pipe_state = "layer_manifold"
 
 /obj/machinery/atmospherics/pipe/layer_manifold/Initialize()
 	front_nodes = list()
@@ -31,17 +33,7 @@
 		A.build_network()
 
 /obj/machinery/atmospherics/pipe/layer_manifold/proc/get_all_connected_nodes()
-	var/list/obj/machinery/atmospherics/all_connected = list()
-	for(var/obj/machinery/atmospherics/I in front_nodes)
-		all_connected[I] = I
-	for(var/obj/machinery/atmospherics/I in back_nodes)
-		all_connected[I] = I
-	for(var/obj/machinery/atmospherics/I in nodes)
-		all_connected[I] = I
-	var/list/obj/machinery/atmospherics/returnlist = list()
-	for(var/obj/machinery/atmospherics/A in all_connected)
-		returnlist += all_connected[A]
-	return returnlist
+	return front_nodes + back_nodes + nodes
 
 /obj/machinery/atmospherics/pipe/layer_manifold/update_icon()	//HEAVILY WIP FOR UPDATE ICONS!!
 	layer = (initial(layer) + (PIPING_LAYER_MAX * PIPING_LAYER_LCHANGE))	//This is above everything else.

code/modules/atmospherics/machinery/pipes/manifold.dm

@@ -13,6 +13,9 @@
 
 	device_type = TRINARY
 
+	construction_type = /obj/item/pipe/trinary
+	pipe_state = "manifold"
+
 /obj/machinery/atmospherics/pipe/manifold/SetInitDirections()
 	switch(dir)
 		if(NORTH)
@@ -168,4 +171,4 @@
 	layer = GAS_PIPE_VISIBLE_LAYER
 
 /obj/machinery/atmospherics/pipe/manifold/brown/hidden
-	level = PIPE_HIDDEN_LEVEL
+	level = PIPE_HIDDEN_LEVEL

code/modules/atmospherics/machinery/pipes/manifold4w.dm

@@ -12,6 +12,9 @@
 
 	device_type = QUATERNARY
 
+	construction_type = /obj/item/pipe/quaternary
+	pipe_state = "manifold4w"
+
 /obj/machinery/atmospherics/pipe/manifold4w/SetInitDirections()
 	initialize_directions = initial(initialize_directions)
 
@@ -160,4 +163,4 @@
 	layer = GAS_PIPE_VISIBLE_LAYER
 
 /obj/machinery/atmospherics/pipe/manifold4w/brown/hidden
-	level = PIPE_HIDDEN_LEVEL
+	level = PIPE_HIDDEN_LEVEL

code/modules/atmospherics/machinery/pipes/simple.dm

@@ -16,6 +16,9 @@ The regular pipe you see everywhere, including bent ones.
 
 	device_type = BINARY
 
+	construction_type = /obj/item/pipe/binary/bendable
+	pipe_state = "simple"
+
 /obj/machinery/atmospherics/pipe/simple/SetInitDirections()
 	normalize_cardinal_directions()
 	if(dir in GLOB.diagonals)
@@ -158,4 +161,4 @@ The regular pipe you see everywhere, including bent ones.
 	layer = GAS_PIPE_VISIBLE_LAYER
 
 /obj/machinery/atmospherics/pipe/simple/brown/hidden
-	level = PIPE_HIDDEN_LEVEL
+	level = PIPE_HIDDEN_LEVEL