From b8e84c73bf803b5cac232d0a81b7efe03555584e Mon Sep 17 00:00:00 2001
From: Qwertytoforty <52090703+Qwertytoforty@users.noreply.github.com>
Date: Tue, 27 Jul 2021 19:26:11 -0400
Subject: [PATCH] Prevents vents / scrubbers from making air from walls
 (#16236)

* Prevents getting free air from walls

* Almost forgot
---
 .../machinery/components/unary_devices/passive_vent.dm        | 4 ++++
 .../machinery/components/unary_devices/vent_pump.dm           | 3 +++
 .../machinery/components/unary_devices/vent_scrubber.dm       | 4 ++++
 3 files changed, 11 insertions(+)

diff --git a/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm b/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm
index 70ae5280a55..9859058d731 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm
@@ -23,6 +23,10 @@
 	if(!node)
 		return 0
 
+	var/turf/T = loc
+	if(T.density) //No, you should not be able to get free air from walls
+		return
+
 	var/datum/gas_mixture/environment = loc.return_air()
 
 	var/pressure_delta = air_contents.return_pressure() - environment.return_pressure()
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/vent_pump.dm b/code/modules/atmospherics/machinery/components/unary_devices/vent_pump.dm
index 35e9a84e932..ce89e03b48a 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/vent_pump.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/vent_pump.dm
@@ -130,6 +130,9 @@
 	..()
 	if(stat & (NOPOWER|BROKEN))
 		return FALSE
+	var/turf/T = loc
+	if(T.density) //No, you should not be able to get free air from walls
+		return
 	if(!node)
 		on = FALSE
 	//broadcast_status() // from now air alarm/control computer should request update purposely --rastaf0
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm b/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm
index d006ae874f3..577bdbdb625 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm
@@ -196,6 +196,10 @@
 	if(stat & (NOPOWER|BROKEN))
 		return
 
+	var/turf/T = loc
+	if(T.density) //No, you should not be able to get free air from walls
+		return
+
 	if(!node)
 		on = 0