Trinary atmospheric device variants

- Mirror filter - standard filter with the output mirrored to the opposite side
- T-Mixer - takes left and right inputs then outputs the mix perpendicular to the inputs
- Mirror mixer - standard filter with the output mirrored to the opposite side
- Added all three to pipe dispenser and construction code so they can be built in-game

code/ATMOSPHERICS/components/trinary_devices/filter.dm

@@ -234,4 +234,45 @@ obj/machinery/atmospherics/trinary/filter/Topic(href, href_list) // -- TLE
 */
 	return
 
+obj/machinery/atmospherics/trinary/filter/m_filter
+	icon = 'icons/obj/atmospherics/m_filter.dmi'
+	icon_state = "intact_off"
 
+	dir = SOUTH
+	initialize_directions = SOUTH|NORTH|EAST
+
+obj/machinery/atmospherics/trinary/filter/m_filter/New()
+	..()
+	switch(dir)
+		if(NORTH)
+			initialize_directions = WEST|NORTH|SOUTH
+		if(SOUTH)
+			initialize_directions = SOUTH|EAST|NORTH
+		if(EAST)
+			initialize_directions = EAST|WEST|NORTH
+		if(WEST)
+			initialize_directions = WEST|SOUTH|EAST
+
+obj/machinery/atmospherics/trinary/filter/m_filter/initialize()
+	if(node1 && node2 && node3) return
+
+	var/node1_connect = turn(dir, -180)
+	var/node2_connect = turn(dir, 90)
+	var/node3_connect = dir
+
+	for(var/obj/machinery/atmospherics/target in get_step(src,node1_connect))
+		if(target.initialize_directions & get_dir(target,src))
+			node1 = target
+			break
+
+	for(var/obj/machinery/atmospherics/target in get_step(src,node2_connect))
+		if(target.initialize_directions & get_dir(target,src))
+			node2 = target
+			break
+
+	for(var/obj/machinery/atmospherics/target in get_step(src,node3_connect))
+		if(target.initialize_directions & get_dir(target,src))
+			node3 = target
+			break
+
+	update_icon()

code/ATMOSPHERICS/components/trinary_devices/mixer.dm

@@ -160,3 +160,93 @@ obj/machinery/atmospherics/trinary/mixer
 		src.update_icon()
 		src.updateUsrDialog()
 		return
+
+obj/machinery/atmospherics/trinary/mixer/t_mixer
+	icon = 'icons/obj/atmospherics/t_mixer.dmi'
+	icon_state = "intact_off"
+
+	dir = SOUTH
+	initialize_directions = SOUTH|EAST|WEST
+
+	//node 3 is the outlet, nodes 1 & 2 are intakes
+
+obj/machinery/atmospherics/trinary/mixer/t_mixer/New()
+	..()
+	switch(dir)
+		if(NORTH)
+			initialize_directions = EAST|NORTH|WEST
+		if(SOUTH)
+			initialize_directions = SOUTH|WEST|EAST
+		if(EAST)
+			initialize_directions = EAST|NORTH|SOUTH
+		if(WEST)
+			initialize_directions = WEST|NORTH|SOUTH
+
+obj/machinery/atmospherics/trinary/mixer/t_mixer/initialize()
+	if(node1 && node2 && node3) return
+
+	var/node1_connect = turn(dir, -90)
+	var/node2_connect = turn(dir, 90)
+	var/node3_connect = dir
+
+	for(var/obj/machinery/atmospherics/target in get_step(src,node1_connect))
+		if(target.initialize_directions & get_dir(target,src))
+			node1 = target
+			break
+
+	for(var/obj/machinery/atmospherics/target in get_step(src,node2_connect))
+		if(target.initialize_directions & get_dir(target,src))
+			node2 = target
+			break
+
+	for(var/obj/machinery/atmospherics/target in get_step(src,node3_connect))
+		if(target.initialize_directions & get_dir(target,src))
+			node3 = target
+			break
+
+	update_icon()
+
+obj/machinery/atmospherics/trinary/mixer/m_mixer
+	icon = 'icons/obj/atmospherics/m_mixer.dmi'
+	icon_state = "intact_off"
+
+	dir = SOUTH
+	initialize_directions = SOUTH|NORTH|EAST
+
+	//node 3 is the outlet, nodes 1 & 2 are intakes
+
+obj/machinery/atmospherics/trinary/mixer/m_mixer/New()
+	..()
+	switch(dir)
+		if(NORTH)
+			initialize_directions = WEST|NORTH|SOUTH
+		if(SOUTH)
+			initialize_directions = SOUTH|EAST|NORTH
+		if(EAST)
+			initialize_directions = EAST|WEST|NORTH
+		if(WEST)
+			initialize_directions = WEST|SOUTH|EAST
+
+obj/machinery/atmospherics/trinary/mixer/m_mixer/initialize()
+	if(node1 && node2 && node3) return
+
+	var/node1_connect = turn(dir, -180)
+	var/node2_connect = turn(dir, 90)
+	var/node3_connect = dir
+
+	for(var/obj/machinery/atmospherics/target in get_step(src,node1_connect))
+		if(target.initialize_directions & get_dir(target,src))
+			node1 = target
+			break
+
+	for(var/obj/machinery/atmospherics/target in get_step(src,node2_connect))
+		if(target.initialize_directions & get_dir(target,src))
+			node2 = target
+			break
+
+	for(var/obj/machinery/atmospherics/target in get_step(src,node3_connect))
+		if(target.initialize_directions & get_dir(target,src))
+			node3 = target
+			break
+
+	update_icon()

code/game/machinery/pipe/construction.dm

@@ -27,6 +27,9 @@ Buildable meters
 #define PIPE_UP					21
 #define PIPE_DOWN				22
 ///// Z-Level stuff
+#define PIPE_GAS_FILTER_M		23
+#define PIPE_GAS_MIXER_T		24
+#define PIPE_GAS_MIXER_M		25
 
 /obj/item/pipe
 	name = "pipe"
@@ -71,6 +74,12 @@ Buildable meters
 			src.pipe_type = PIPE_MVALVE
 		else if(istype(make_from, /obj/machinery/atmospherics/binary/pump))
 			src.pipe_type = PIPE_PUMP
+		else if(istype(make_from, /obj/machinery/atmospherics/trinary/filter/m_filter))
+			src.pipe_type = PIPE_GAS_FILTER_M
+		else if(istype(make_from, /obj/machinery/atmospherics/trinary/mixer/t_mixer))
+			src.pipe_type = PIPE_GAS_MIXER_T
+		else if(istype(make_from, /obj/machinery/atmospherics/trinary/mixer/m_mixer))
+			src.pipe_type = PIPE_GAS_MIXER_M
 		else if(istype(make_from, /obj/machinery/atmospherics/trinary/filter))
 			src.pipe_type = PIPE_GAS_FILTER
 		else if(istype(make_from, /obj/machinery/atmospherics/trinary/mixer))
@@ -132,6 +141,9 @@ Buildable meters
 		"pipe up", \
 		"pipe down", \
 ///// Z-Level stuff
+		"gas filter m", \
+		"gas mixer t", \
+		"gas mixer m", \
 	)
 	name = nlist[pipe_type+1] + " fitting"
 	var/list/islist = list( \
@@ -160,6 +172,9 @@ Buildable meters
 		"cap", \
 		"cap", \
 ///// Z-Level stuff
+		"m_filter", \
+		"t_mixer", \
+		"m_mixer", \
 	)
 	icon_state = islist[pipe_type + 1]
 
@@ -230,6 +245,10 @@ Buildable meters
 			return flip|cw|acw
 		if(PIPE_GAS_FILTER, PIPE_GAS_MIXER,PIPE_MTVALVE)
 			return dir|flip|cw
+		if(PIPE_GAS_FILTER_M, PIPE_GAS_MIXER_M)
+			return dir|flip|acw
+		if(PIPE_GAS_MIXER_T)
+			return dir|cw|acw
 		if(PIPE_CAP)
 			return flip
 ///// Z-Level stuff
@@ -490,7 +509,7 @@ Buildable meters
 				P.node3.initialize()
 				P.node3.build_network()
 
-		if(PIPE_GAS_MIXER)		//gas filter
+		if(PIPE_GAS_MIXER)		//gas mixer
 			var/obj/machinery/atmospherics/trinary/mixer/P = new(src.loc)
 			P.dir = dir
 			P.initialize_directions = pipe_dir
@@ -510,6 +529,66 @@ Buildable meters
 				P.node3.initialize()
 				P.node3.build_network()
 
+		if(PIPE_GAS_FILTER_M)		//gas filter mirrored
+			var/obj/machinery/atmospherics/trinary/filter/m_filter/P = new(src.loc)
+			P.dir = dir
+			P.initialize_directions = pipe_dir
+			if (pipename)
+				P.name = pipename
+			var/turf/T = P.loc
+			P.level = T.intact ? 2 : 1
+			P.initialize()
+			P.build_network()
+			if (P.node1)
+				P.node1.initialize()
+				P.node1.build_network()
+			if (P.node2)
+				P.node2.initialize()
+				P.node2.build_network()
+			if (P.node3)
+				P.node3.initialize()
+				P.node3.build_network()
+
+		if(PIPE_GAS_MIXER_T)		//gas mixer-t
+			var/obj/machinery/atmospherics/trinary/mixer/t_mixer/P = new(src.loc)
+			P.dir = dir
+			P.initialize_directions = pipe_dir
+			if (pipename)
+				P.name = pipename
+			var/turf/T = P.loc
+			P.level = T.intact ? 2 : 1
+			P.initialize()
+			P.build_network()
+			if (P.node1)
+				P.node1.initialize()
+				P.node1.build_network()
+			if (P.node2)
+				P.node2.initialize()
+				P.node2.build_network()
+			if (P.node3)
+				P.node3.initialize()
+				P.node3.build_network()
+
+		if(PIPE_GAS_MIXER_M)		//gas mixer mirrored
+			var/obj/machinery/atmospherics/trinary/mixer/m_mixer/P = new(src.loc)
+			P.dir = dir
+			P.initialize_directions = pipe_dir
+			if (pipename)
+				P.name = pipename
+			var/turf/T = P.loc
+			P.level = T.intact ? 2 : 1
+			P.initialize()
+			P.build_network()
+			if (P.node1)
+				P.node1.initialize()
+				P.node1.build_network()
+			if (P.node2)
+				P.node2.initialize()
+				P.node2.build_network()
+			if (P.node3)
+				P.node3.initialize()
+				P.node3.build_network()
+
 		if(PIPE_SCRUBBER)		//scrubber
 			var/obj/machinery/atmospherics/unary/vent_scrubber/S = new(src.loc)
 			S.dir = dir
@@ -709,4 +788,7 @@ Buildable meters
 #undef PIPE_VOLUME_PUMP
 #undef PIPE_OUTLET_INJECT
 #undef PIPE_MTVALVE
+#undef PIPE_GAS_FILTER_M
+#undef PIPE_GAS_MIXER_T
+#undef PIPE_GAS_MIXER_M
 //#undef PIPE_MANIFOLD4W

code/game/machinery/pipe/pipe_dispenser.dm

@@ -34,7 +34,10 @@
 <A href='?src=\ref[src];make=10;dir=1'>Scrubber</A><BR>
 <A href='?src=\ref[src];makemeter=1'>Meter</A><BR>
 <A href='?src=\ref[src];make=13;dir=1'>Gas Filter</A><BR>
+<A href='?src=\ref[src];make=23;dir=1'>Gas Filter-Mirrored</A><BR>
 <A href='?src=\ref[src];make=14;dir=1'>Gas Mixer</A><BR>
+<A href='?src=\ref[src];make=25;dir=1'>Gas Mixer-Mirrored</A><BR>
+<A href='?src=\ref[src];make=24;dir=1'>Gas Mixer-T</A><BR>
 <b>Heat exchange:</b><BR>
 <A href='?src=\ref[src];make=2;dir=1'>Pipe</A><BR>
 <A href='?src=\ref[src];make=3;dir=5'>Bent Pipe</A><BR>