Updated ZAS and Atmo

code/ATMOSPHERICS/components/tvalve.dm

@@ -268,6 +268,7 @@ obj/machinery/atmospherics/tvalve
 		icon = 'icons/obj/atmospherics/digital_valve.dmi'
 
 		attack_ai(mob/user as mob)
+			src.add_hiddenprint(user)
 			return src.attack_hand(user)
 
 		attack_hand(mob/user as mob)
@@ -387,6 +388,7 @@ obj/machinery/atmospherics/tvalve/mirrored
 		icon = 'icons/obj/atmospherics/digital_valve.dmi'
 
 		attack_ai(mob/user as mob)
+			src.add_hiddenprint(user)
 			return src.attack_hand(user)
 
 		attack_hand(mob/user as mob)

code/ATMOSPHERICS/components/unary/cold_sink.dm

@@ -1,6 +1,6 @@
 /obj/machinery/atmospherics/unary/cold_sink
 	icon = 'icons/obj/atmospherics/cold_sink.dmi'
-	icon_state = "intact_off"
+	icon_state = "on_cool"
 	density = 1
 	use_power = 1
 

code/ATMOSPHERICS/components/unary/thermal_plate.dm

@@ -6,17 +6,18 @@
 //Transfers heat between a pipe system and environment, based on which has a greater thermal energy concentration
 
 	icon = 'icons/obj/atmospherics/cold_sink.dmi'
-	icon_state = "intact_off"
+	icon_state = "off"
+	level = 1
 
 	name = "Thermal Transfer Plate"
 	desc = "Transfers heat to and from an area"
 
 	update_icon()
-		if(node)
-			icon_state = "intact_off"
-		else
-			icon_state = "exposed"
-		return
+		var/prefix=""
+		//var/suffix="_idle" // Also available: _heat, _cool
+		if(level == 1 && istype(loc, /turf/simulated))
+			prefix="h"
+		icon_state = "[prefix]off"
 
 	process()
 		..()
@@ -59,6 +60,37 @@
 
 		return 1
 
+	hide(var/i) //to make the little pipe section invisible, the icon changes.
+		var/prefix=""
+		//var/suffix="_idle" // Also available: _heat, _cool
+		if(i == 1 && istype(loc, /turf/simulated))
+			prefix="h"
+		icon_state = "[prefix]off"
+		return
+
+	attackby(var/obj/item/weapon/W as obj, var/mob/user as mob)
+		if (!istype(W, /obj/item/weapon/wrench))
+			return ..()
+		var/turf/T = src.loc
+		if (level==1 && isturf(T) && T.intact)
+			user << "\red You must remove the plating first."
+			return 1
+		var/datum/gas_mixture/int_air = return_air()
+		var/datum/gas_mixture/env_air = loc.return_air()
+		if ((int_air.return_pressure()-env_air.return_pressure()) > 2*ONE_ATMOSPHERE)
+			user << "\red You cannot unwrench this [src], it too exerted due to internal pressure."
+			add_fingerprint(user)
+			return 1
+		playsound(src.loc, 'sound/items/Ratchet.ogg', 50, 1)
+		user << "\blue You begin to unfasten \the [src]..."
+		if (do_after(user, 40))
+			user.visible_message( \
+				"[user] unfastens \the [src].", \
+				"\blue You have unfastened \the [src].", \
+				"You hear ratchet.")
+			new /obj/item/pipe(loc, make_from=src)
+			del(src)
+
 	proc/radiate()
 
 		var/internal_transfer_moles = 0.25 * air_contents.total_moles()

code/ATMOSPHERICS/components/unary/vent_scrubber.dm

@@ -40,13 +40,19 @@
 		..()
 
 	update_icon()
+		var/hidden=""
+		if(level == 1 && istype(loc, /turf/simulated))
+			hidden="h"
+		var/suffix=""
+		if(scrub_O2)
+			suffix="1"
 		if(node && on && !(stat & (NOPOWER|BROKEN)))
 			if(scrubbing)
-				icon_state = "[level == 1 && istype(loc, /turf/simulated) ? "h" : "" ]on"
+				icon_state = "[hidden]on[suffix]"
 			else
-				icon_state = "[level == 1 && istype(loc, /turf/simulated) ? "h" : "" ]in"
+				icon_state = "[hidden]in"
 		else
-			icon_state = "[level == 1 && istype(loc, /turf/simulated) ? "h" : "" ]off"
+			icon_state = "[hidden]off"
 		return
 
 	proc
@@ -106,7 +112,12 @@
 		var/datum/gas_mixture/environment = loc.return_air()
 
 		if(scrubbing)
-			if((environment.toxins>0) || (environment.carbon_dioxide>0) || (environment.trace_gases.len>0))
+			// Are we scrubbing gasses that are present?
+			if(\
+				(scrub_Toxins && environment.toxins > 0) ||\
+				(scrub_CO2 && environment.carbon_dioxide > 0) ||\
+				(scrub_N2O && environment.trace_gases.len > 0) ||\
+				(scrub_O2 && environment.oxygen > 0))
 				var/transfer_moles = min(1, volume_rate/environment.volume)*environment.total_moles()
 
 				//Take a gas sample
@@ -117,12 +128,15 @@
 				//Filter it
 				var/datum/gas_mixture/filtered_out = new
 				filtered_out.temperature = removed.temperature
+
 				if(scrub_Toxins)
 					filtered_out.toxins = removed.toxins
 					removed.toxins = 0
+
 				if(scrub_CO2)
 					filtered_out.carbon_dioxide = removed.carbon_dioxide
 					removed.carbon_dioxide = 0
+
 				if(scrub_O2)
 					filtered_out.oxygen = removed.oxygen
 					removed.oxygen = 0
@@ -184,7 +198,7 @@
 			on = !on
 
 		if(signal.data["panic_siphon"]) //must be before if("scrubbing" thing
-			panic = text2num(signal.data["panic_siphon"] != null)
+			panic = text2num(signal.data["panic_siphon"]) // We send 0 for false in the alarm.
 			if(panic)
 				on = 1
 				scrubbing = 0

code/ATMOSPHERICS/components/valve.dm

@@ -266,6 +266,7 @@ obj/machinery/atmospherics/valve
 		icon = 'icons/obj/atmospherics/digital_valve.dmi'
 
 		attack_ai(mob/user as mob)
+			src.add_hiddenprint(user)
 			return src.attack_hand(user)
 
 		attack_hand(mob/user as mob)
@@ -314,8 +315,8 @@ obj/machinery/atmospherics/valve
 	attackby(var/obj/item/weapon/W as obj, var/mob/user as mob)
 		if (!istype(W, /obj/item/weapon/wrench))
 			return ..()
-		if (istype(src, /obj/machinery/atmospherics/valve/digital))
-			user << "\red You cannot unwrench this [src], it's too complicated."
+		if (istype(src,/obj/machinery/atmospherics/valve/digital) && src:frequency)
+			user << "\red You cannot unwrench this [src], it's digitally connected to another device."
 			return 1
 		var/turf/T = src.loc
 		if (level==1 && isturf(T) && T.intact)