Merge branch 'master' of https://github.com/Citadel-Station-13/Citadel-Station-13 into tgui-alerts-and-what-not

code/modules/atmospherics/machinery/airalarm.dm

@@ -403,6 +403,9 @@
 		if("incheck")
 			send_signal(device_id, list("checks" = text2num(params["val"])^2), usr)
 			. = TRUE
+		if("direction")
+			send_signal(device_id, list("direction" = text2num(params["val"])), usr)
+			. = TRUE
 		if("set_external_pressure", "set_internal_pressure")
 
 			var/target = params["value"]

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
+	var/old_temperature = 0
+	var/other_old_temperature = 0
 
 	pipe_state = "heunary"
 
@@ -59,9 +61,6 @@
 	var/other_air_heat_capacity = partner_air_contents.heat_capacity()
 	var/combined_heat_capacity = other_air_heat_capacity + air_heat_capacity
 
-	var/old_temperature = air_contents.return_temperature()
-	var/other_old_temperature = partner_air_contents.return_temperature()
-
 	if(combined_heat_capacity > 0)
 		var/combined_energy = partner_air_contents.return_temperature()*other_air_heat_capacity + air_heat_capacity*air_contents.return_temperature()
 
@@ -71,6 +70,8 @@
 
 	if(abs(old_temperature-air_contents.return_temperature()) > 1)
 		update_parents()
+		old_temperature = air_contents.return_temperature()
 
 	if(abs(other_old_temperature-partner_air_contents.return_temperature()) > 1)
 		partner.update_parents()
+		other_old_temperature = partner_air_contents.return_temperature()

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

@@ -144,7 +144,7 @@
 		"device" = "VP",
 		"timestamp" = world.time,
 		"power" = on,
-		"direction" = pump_direction ? "release" : "siphon",
+		"direction" = pump_direction,
 		"checks" = pressure_checks,
 		"internal" = internal_pressure_bound,
 		"external" = external_pressure_bound,