Atmos control auto-update fixes

Air alarms now auto-refresh and have a mechanism to heat or cool rooms.
Space heaters can both heat and cool rooms

code/WorkInProgress/Mini/atmos_control.dm

@@ -13,9 +13,19 @@
 	var/overridden = 0 //not set yet, can't think of a good way to do it
 	req_access = list(access_ce)
 
+
+/obj/machinery/computer/atmoscontrol/attack_ai(var/mob/user as mob)
+	return interact(user)
+
+/obj/machinery/computer/atmoscontrol/attack_paw(var/mob/user as mob)
+	return interact(user)
+
 /obj/machinery/computer/atmoscontrol/attack_hand(mob/user)
 	if(..())
 		return
+	return interact(user)
+
+/obj/machinery/computer/atmoscontrol/interact(mob/user)
 	user.set_machine(src)
 	if(allowed(user))
 		overridden = 1
@@ -62,7 +72,6 @@
 		return
 	if(href_list["reset"])
 		current = null
-		src.updateUsrDialog()
 	if(href_list["alarm"])
 		current = locate(href_list["alarm"])
 		if(href_list["command"])
@@ -129,6 +138,11 @@
 							selected[2] = selected[4]
 						if(selected[3] > selected[4])
 							selected[3] = selected[4]
+
+					//Sets the temperature the built-in heater/cooler tries to maintain.
+					if(env == "temperature")
+						current.target_temperature = (selected[2] + selected[3])/2
+
 					spawn(1)
 						updateUsrDialog()
 			return
@@ -167,7 +181,7 @@
 			spawn(5)
 				src.updateUsrDialog()
 			return
-		src.updateUsrDialog()
+	updateUsrDialog()
 
 //copypasta from alarm code, changed to work with this without derping hard
 //---START COPYPASTA----
@@ -185,7 +199,7 @@
 			output += {"
 <a href='?src=\ref[src];alarm=\ref[current];screen=[AALARM_SCREEN_SCRUB]'>Scrubbers Control</a><br>
 <a href='?src=\ref[src];alarm=\ref[current];screen=[AALARM_SCREEN_VENT]'>Vents Control</a><br>
-<a href='?src=\ref[src];alarm=\ref[current];screen=[AALARM_SCREEN_MODE]'>Set envirenomentals mode</a><br>
+<a href='?src=\ref[src];alarm=\ref[current];screen=[AALARM_SCREEN_MODE]'>Set environmental mode</a><br>
 <a href='?src=\ref[src];alarm=\ref[current];screen=[AALARM_SCREEN_SENSORS]'>Sensor Control</a><br>
 <HR>
 "}

code/game/machinery/alarm.dm

@@ -31,7 +31,7 @@
 #define AALARM_MODE_SCRUBBING	1
 #define AALARM_MODE_REPLACEMENT	2 //like scrubbing, but faster.
 #define AALARM_MODE_PANIC		3 //constantly sucks all air
-#define AALARM_MODE_CYCLE		4 //sucks off all air, then refill and swithes to scrubbing
+#define AALARM_MODE_CYCLE		4 //sucks off all air, then refill and switches to scrubbing
 #define AALARM_MODE_FILL		5 //emergency fill
 
 #define AALARM_SCREEN_MAIN		1
@@ -46,6 +46,9 @@
 #define RCON_AUTO	2
 #define RCON_YES	3
 
+//1000 joules equates to about 1 degree every 2 seconds for a single tile of air.
+#define MAX_ENERGY_CHANGE 2000
+
 //all air alarms in area are connected via magic
 /area
 	var/obj/machinery/alarm/master_air_alarm
@@ -82,6 +85,9 @@
 	var/area/alarm_area
 	var/danger_level = 0
 
+	var/target_temperature = T0C+20
+	var/regulating_temperature = 0
+
 	var/datum/radio_frequency/radio_connection
 
 	var/list/TLV = list()
@@ -95,6 +101,7 @@
 		TLV["other"] =			list(-1.0, -1.0, 0.5, 1.0) // Partial pressure, kpa
 		TLV["pressure"] =		list(0,ONE_ATMOSPHERE*0.10,ONE_ATMOSPHERE*1.40,ONE_ATMOSPHERE*1.60) /* kpa */
 		TLV["temperature"] =	list(20, 40, 140, 160) // K
+		target_temperature = 90
 
 	New()
 		..()
@@ -111,7 +118,7 @@
 		TLV["plasma"] =			list(-1.0, -1.0, 0.2, 0.5) // Partial pressure, kpa
 		TLV["other"] =			list(-1.0, -1.0, 0.5, 1.0) // Partial pressure, kpa
 		TLV["pressure"] =		list(ONE_ATMOSPHERE*0.80,ONE_ATMOSPHERE*0.90,ONE_ATMOSPHERE*1.10,ONE_ATMOSPHERE*1.20) /* kpa */
-		TLV["temperature"] =	list(T0C, T0C+10, T0C+40, T0C+66) // K
+		TLV["temperature"] =	list(T0C-26, T0C, T0C+40, T0C+66) // K
 
 	initialize()
 		set_frequency(frequency)
@@ -151,6 +158,41 @@
 		current_settings = TLV["temperature"]
 		var/temperature_dangerlevel = get_danger_level(environment.temperature, current_settings)
 
+		//Handle temperature adjustment here.
+		if(temperature_dangerlevel || regulating_temperature)
+			//If it goes too far, we should adjust ourselves back before stopping.
+			if(!regulating_temperature)
+				regulating_temperature = 1
+				visible_message("\The [src] clicks as it starts [environment.temperature > target_temperature ? "cooling" : "heating"] the room.",\
+				"You hear a click and a faint electronic hum.")
+
+			if(target_temperature > T0C + 90)
+				target_temperature = T0C + 90
+
+			if(target_temperature < T0C - 40)
+				target_temperature = T0C - 40
+
+			var/datum/gas_mixture/gas = location.remove_air(0.25*environment.total_moles)
+			var/heat_capacity = gas.heat_capacity()
+			var/energy_used = max( abs( heat_capacity*(gas.temperature - target_temperature) ), MAX_ENERGY_CHANGE)
+
+			//Use power.  Assuming that each power unit represents 1000 watts....
+			use_power(energy_used/1000, ENVIRON)
+
+			//We need to cool ourselves.
+			if(environment.temperature > target_temperature)
+				gas.temperature -= energy_used/heat_capacity
+			else
+				gas.temperature -= energy_used/heat_capacity
+
+			environment.merge(gas)
+
+			if(abs(environment.temperature - target_temperature) <= 0.5)
+				regulating_temperature = 0
+				visible_message("\The [src] clicks quietly as it stops [environment.temperature > target_temperature ? "cooling" : "heating"] the room.",\
+				"You hear a click as a faint electronic humming stops.")
+
+
 		var/old_danger_level = danger_level
 		danger_level = max(pressure_dangerlevel,
 			oxygen_dangerlevel,
@@ -513,11 +555,16 @@
 //END HACKING//
 ///////////////
 
+	attack_ai(mob/user)
+		return interact(user)
 
 	attack_hand(mob/user)
 		. = ..()
 		if (.)
 			return
+		return interact(user)
+
+	interact(mob/user)
 		user.set_machine(src)
 
 		if ( (get_dist(src, user) > 1 ))
@@ -900,6 +947,11 @@ table tr:first-child th:first-child { border: none;}
 							selected[2] = selected[4]
 						if(selected[3] > selected[4])
 							selected[3] = selected[4]
+
+					//Sets the temperature the built-in heater/cooler tries to maintain.
+					if(env == "temperature")
+						target_temperature = (selected[2] + selected[3])/2
+
 					apply_mode()
 
 		if(href_list["screen"])

code/game/machinery/spaceheater.dm

@@ -83,6 +83,10 @@
 
 	attack_hand(mob/user as mob)
 		src.add_fingerprint(user)
+		interact(user)
+
+	interact(mob/user as mob)
+
 		if(open)
 
 			var/dat
@@ -127,7 +131,7 @@
 					var/value = text2num(href_list["val"])
 
 					// limit to 20-90 degC
-					set_temperature = dd_range(20, 90, set_temperature + value)
+					set_temperature = dd_range(0, 90, set_temperature + value)
 
 				if("cellremove")
 					if(open && cell && !usr.get_active_hand())
@@ -164,7 +168,7 @@
 				var/turf/simulated/L = loc
 				if(istype(L))
 					var/datum/gas_mixture/env = L.return_air()
-					if(env.temperature < (set_temperature+T0C))
+					if(env.temperature != set_temperature + T0C)
 
 						var/transfer_moles = 0.25 * env.total_moles()
 
@@ -176,10 +180,12 @@
 
 							var/heat_capacity = removed.heat_capacity()
 							//world << "heating ([heat_capacity])"
-							if(heat_capacity == 0 || heat_capacity == null) // Added check to avoid divide by zero (oshi-) runtime errors -- TLE
+							if(heat_capacity) // Added check to avoid divide by zero (oshi-) runtime errors -- TLE
-								heat_capacity = 1
+								if(removed.temperature < set_temperature + T0C)
-							removed.temperature = min((removed.temperature*heat_capacity + heating_power)/heat_capacity, 1000) // Added min() check to try and avoid wacky superheating issues in low gas scenarios -- TLE
+									removed.temperature = min(removed.temperature + heating_power/heat_capacity, 1000) // Added min() check to try and avoid wacky superheating issues in low gas scenarios -- TLE
-							cell.use(heating_power/20000)
+								else
+									removed.temperature = max(removed.temperature - heating_power/heat_capacity, TCMB)
+								cell.use(heating_power/20000)
 
 							//world << "now at [removed.temperature]"