fuck

code/__HELPERS/game.dm

@@ -690,7 +690,7 @@
 	if(!istype(T))
 		return
 	var/datum/gas_mixture/environment = T.return_air()
-	if(!istype(environment))
+	if(!environment)
 		return
 	var/pressure = environment.return_pressure()
 	if(pressure <= LAVALAND_EQUIPMENT_EFFECT_PRESSURE)

code/datums/components/rot.dm

@@ -21,6 +21,8 @@
 		return
 
 	var/datum/gas_mixture/turf_air = T.return_air()
+	if(!turf_air)
+		return
 	var/datum/gas_mixture/stank_breath = T.remove_air(1 / turf_air.return_volume() * turf_air.total_moles())
 	if(!stank_breath)
 		return

code/datums/diseases/advance/symptoms/heal.dm

@@ -394,7 +394,7 @@
 	. = 0
 
 	if(M.loc)
-		environment = M.loc.return_air()
+		environment = M.return_air()
 	if(environment)
 		if(environment.get_moles(GAS_PLASMA) > GLOB.gas_data.visibility[GAS_PLASMA]) //if there's enough plasma in the air to see
 			. += power * 0.5

code/datums/mutations/actions.dm

@@ -42,7 +42,7 @@
 
 /obj/effect/proc_holder/spell/targeted/olfaction/cast(list/targets, mob/living/user = usr)
 	//can we sniff? is there miasma in the air?
-	var/datum/gas_mixture/air = user.loc.return_air()
+	var/datum/gas_mixture/air = user.return_air()
 	if(air.get_moles(GAS_MIASMA) >= 0.1)
 		user.adjust_disgust(sensitivity * 45)
 		to_chat(user, span_warning("With your overly sensitive nose, you get a whiff of stench and feel sick! Try moving to a cleaner area!"))

code/game/machinery/airlock_cycle_control.dm

@@ -135,14 +135,12 @@
 				airlock.bolt()
 
 /obj/machinery/advanced_airlock_controller/update_icon(use_hash = FALSE)
-	var/turf/location = get_turf(src)
-	if(!location)
+	if(!isopenturf(get_turf(src)))
 		return
 	var/pressure = 0
-	if(location)
-		var/datum/gas_mixture/environment = location.return_air()
-		if(environment)
-			pressure = environment.return_pressure()
+	var/datum/gas_mixture/environment = return_air()
+	if(environment)
+		pressure = environment.return_pressure()
 	var/maxpressure = (exterior_pressure && (cyclestate == AIRLOCK_CYCLESTATE_OUTCLOSING || cyclestate == AIRLOCK_CYCLESTATE_OUTOPENING || cyclestate == AIRLOCK_CYCLESTATE_OUTOPEN)) ? exterior_pressure : interior_pressure
 	var/pressure_bars = round(pressure / maxpressure * 5 + 0.01)
 
@@ -295,15 +293,13 @@
 		update_icon(TRUE)
 		return
 
-	var/turf/location = get_turf(src)
-	if(!location)
+	if(!isopenturf(get_turf(src)))
 		update_icon(TRUE)
 		return
 	var/pressure = 0
-	if(location)
-		var/datum/gas_mixture/environment = location.return_air()
-		if(environment)
-			pressure = environment.return_pressure()
+	var/datum/gas_mixture/environment = return_air()
+	if(environment)
+		pressure = environment.return_pressure()
 
 	update_error_status()
 	var/doors_valid = TRUE
@@ -596,10 +592,9 @@
 		ui.open()
 
 /obj/machinery/advanced_airlock_controller/ui_data(mob/user)
-	var/turf/T = get_turf(src)
 	var/pressure = 0
-	if(T)
-		var/datum/gas_mixture/environment = T.return_air()
+	if(isopenturf(get_turf(src)))
+		var/datum/gas_mixture/environment = return_air()
 		if(environment)
 			pressure = environment.return_pressure()
 

code/game/machinery/electrolyzer.dm

@@ -70,8 +70,7 @@
 		update_icon()
 		return PROCESS_KILL
 
-	var/turf/L = loc
-	if(!istype(L))
+	if(!isopenturf(get_turf(src)))
 		if(mode != ELECTROLYZER_MODE_STANDBY)
 			mode = ELECTROLYZER_MODE_STANDBY
 			update_icon()
@@ -86,7 +85,7 @@
 	if(mode == ELECTROLYZER_MODE_STANDBY)
 		return
 
-	var/datum/gas_mixture/env = L.return_air() //get air from the turf
+	var/datum/gas_mixture/env = return_air() //get air from the turf
 	var/datum/gas_mixture/removed = env.remove(0.1 * env.total_moles())
 
 	if(!removed)

code/game/machinery/shuttle/shuttle_engine.dm

@@ -111,10 +111,11 @@
 
 //Thanks to spaceheater.dm for inspiration :)
 /obj/machinery/shuttle/engine/proc/fireEngine()
-	var/turf/heatTurf = loc
-	if(!heatTurf)
+	if(!isopenturf(get_turf(src)))
+		return
+	var/datum/gas_mixture/env = return_air()
+	if(!env)
 		return
-	var/datum/gas_mixture/env = heatTurf.return_air()
 	var/heat_cap = env.heat_capacity()
 	var/req_power = abs(env.return_temperature() - ENGINE_HEAT_TARGET) * heat_cap
 	req_power = min(req_power, ENGINE_HEATING_POWER)

code/game/machinery/spaceheater.dm

@@ -73,14 +73,13 @@
 		return PROCESS_KILL
 
 	if(cell && cell.charge > 0)
-		var/turf/L = loc
-		if(!istype(L))
+		if(!isopenturf(get_turf(src)))
 			if(mode != HEATER_MODE_STANDBY)
 				mode = HEATER_MODE_STANDBY
 				update_icon()
 			return
 
-		var/datum/gas_mixture/env = L.return_air()
+		var/datum/gas_mixture/env = return_air()
 
 		var/newMode = HEATER_MODE_STANDBY
 		if(setMode != HEATER_MODE_COOL && env.return_temperature() < targetTemperature - temperatureTolerance)
@@ -185,13 +184,10 @@
 	data["minTemp"] = max(settableTemperatureMedian - settableTemperatureRange - T0C, TCMB)
 	data["maxTemp"] = settableTemperatureMedian + settableTemperatureRange - T0C
 
-	var/turf/L = get_turf(loc)
 	var/curTemp
-	if(istype(L))
-		var/datum/gas_mixture/env = L.return_air()
-		curTemp = env.return_temperature()
-	else if(isturf(L))
-		curTemp = L.return_temperature()
+	if(isopenturf(get_turf(src)))
+		var/datum/gas_mixture/env = return_air()
+		curTemp = env?.return_temperature()
 	if(isnull(curTemp))
 		data["currentTemp"] = "N/A"
 	else

code/game/machinery/telecomms/telecomunications.dm

@@ -148,10 +148,9 @@ GLOBAL_LIST_EMPTY(telecomms_list)
 /obj/machinery/telecomms/proc/update_speed()
 	if(!on)
 		return
-	var/turf/T = get_turf(src) //yogs
 	var/speedloss = 0
-	var/datum/gas_mixture/env = T.return_air()
-	var/temperature = env.return_temperature()
+	var/datum/gas_mixture/env = return_air()
+	var/temperature = env?.return_temperature()
 	if(temperature <= 150)				// 150K optimal operating parameters
 		net_efective = 100
 	else

code/game/objects/items/devices/PDA/PDA.dm

@@ -385,14 +385,13 @@ GLOBAL_LIST_EMPTY(PDAs)
 			if (3)
 				dat += "<h4>[PDAIMG(atmos)] Atmospheric Readings</h4>"
 
-				var/turf/T = user.loc
-				if (isnull(T))
+				if (!isopenturf(get_turf(user)))
 					dat += "Unable to obtain a reading.<br>"
 				else
-					var/datum/gas_mixture/environment = T.return_air()
+					var/datum/gas_mixture/environment = user.return_air()
 
-					var/pressure = environment.return_pressure()
-					var/total_moles = environment.total_moles()
+					var/pressure = environment?.return_pressure()
+					var/total_moles = environment?.total_moles()
 
 					dat += "Air Pressure: [round(pressure,0.1)] kPa<br>"
 

code/game/objects/items/devices/scanners.dm

@@ -599,11 +599,14 @@ GENE SCANNER
 	if (user.stat || user.eye_blind)
 		return
 
-	var/turf/location = user.loc
-	if(!istype(location))
+	if(!isopenturf(get_turf(user)))
 		return
 
-	var/datum/gas_mixture/environment = location.return_air()
+	var/datum/gas_mixture/environment = user.return_air()
+
+	if(!environment)
+		to_chat(user, span_info("No air detected."))
+		return
 
 	var/pressure = environment.return_pressure()
 	var/total_moles = environment.total_moles()

code/game/objects/structures/crates_lockers/crates/critter.dm

@@ -35,4 +35,4 @@
 	if(tank)
 		return tank.air_contents
 	else
-		return loc.return_air()
+		return loc?.return_air()

code/game/objects/structures/transit_tubes/station.dm

@@ -177,8 +177,9 @@
 		sleep(OPEN_DURATION + 0.2 SECONDS)
 		pod_moving = FALSE
 		if(!QDELETED(pod))
-			var/datum/gas_mixture/floor_mixture = loc.return_air()
-			equalize_all_gases_in_list(list(pod.air_contents,floor_mixture))
+			var/datum/gas_mixture/floor_mixture = loc?.return_air()
+			if(floor_mixture)
+				equalize_all_gases_in_list(list(pod.air_contents,floor_mixture))
 
 /obj/structure/transit_tube/station/init_tube_dirs()
 	switch(dir)

code/modules/atmospherics/machinery/airalarm.dm

@@ -284,11 +284,11 @@
 	data["fire_alarm"] = A.fire
 
 	var/turf/T = get_turf(src)
-	var/datum/gas_mixture/environment = T.return_air()
+	var/datum/gas_mixture/environment = T?.return_air()
 	var/datum/tlv/cur_tlv
 
 	data["environment_data"] = list()
-	var/pressure = environment.return_pressure()
+	var/pressure = environment?.return_pressure()
 	cur_tlv = TLV["pressure"]
 	data["environment_data"] += list(list(
 							"name" = "Pressure",
@@ -296,7 +296,7 @@
 							"unit" = "kPa",
 							"danger_level" = cur_tlv.get_danger_level(pressure)
 	))
-	var/temperature = environment.return_temperature()
+	var/temperature = environment?.return_temperature()
 	cur_tlv = TLV["temperature"]
 	data["environment_data"] += list(list(
 							"name" = "Temperature",
@@ -304,9 +304,9 @@
 							"unit" = "K ([round(temperature - T0C, 0.1)]C)",
 							"danger_level" = cur_tlv.get_danger_level(temperature)
 	))
-	var/total_moles = environment.total_moles()
-	var/partial_pressure = R_IDEAL_GAS_EQUATION * environment.return_temperature() / environment.return_volume()
-	for(var/gas_id in environment.get_gases())
+	var/total_moles = environment?.total_moles()
+	var/partial_pressure = R_IDEAL_GAS_EQUATION * environment?.return_temperature() / environment?.return_volume()
+	for(var/gas_id in environment?.get_gases())
 		if(!(gas_id in TLV)) // We're not interested in this gas, it seems.
 			continue
 		cur_tlv = TLV[gas_id]
@@ -658,13 +658,16 @@
 	if((stat & (NOPOWER|BROKEN)) || shorted)
 		return
 
-	var/turf/location = get_turf(src)
-	if(!location)
+	if(!isopenturf(get_turf(src)))
 		return
 
 	var/datum/tlv/cur_tlv
 
-	var/datum/gas_mixture/environment = location.return_air()
+	var/datum/gas_mixture/environment = return_air()
+
+	if(!environment)
+		return
+
 	var/partial_pressure = R_IDEAL_GAS_EQUATION * environment.return_temperature() / environment.return_volume()
 
 	cur_tlv = TLV["pressure"]

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

@@ -128,6 +128,10 @@
 
 	var/datum/gas_mixture/air_contents = airs[1]
 	var/datum/gas_mixture/environment = loc.return_air()
+
+	if(!environment)
+		return
+
 	var/environment_pressure = environment.return_pressure()
 	var/environment_moles = environment.total_moles()
 	var/last_moles_real_added = environment_moles - last_moles

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

@@ -150,6 +150,9 @@
 	var/datum/gas_mixture/environment = tile.return_air()
 	var/datum/gas_mixture/air_contents = airs[1]
 
+	if(!environment)
+		return FALSE
+
 	if(air_contents.return_pressure() >= 50 * ONE_ATMOSPHERE || !islist(filter_types))
 		return FALSE
 

code/modules/recycling/disposal/bin.dm

@@ -422,14 +422,13 @@
 	var/datum/gas_mixture/env = L.return_air()
 	var/pressure_delta = (SEND_PRESSURE*1.01) - air_contents.return_pressure()
 
-	if(env.return_temperature() > 0)
+	if(env?.return_temperature() > 0)
 		var/transfer_moles = 0.1 * pressure_delta*air_contents.return_volume()/(env.return_temperature() * R_IDEAL_GAS_EQUATION)
 
 		//Actually transfer the gas
 		var/datum/gas_mixture/removed = env.remove(transfer_moles)
 		air_contents.merge(removed)
 
-
 	//if full enough, switch to ready mode
 	if(air_contents.return_pressure() >= SEND_PRESSURE)
 		full_pressure = TRUE