diff --git a/code/__HELPERS/game.dm b/code/__HELPERS/game.dm
index 08c4b15519c3..08f7d59e96fe 100644
--- a/code/__HELPERS/game.dm
+++ b/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)
diff --git a/code/datums/components/rot.dm b/code/datums/components/rot.dm
index 6a35aecbe75a..eafc103a2284 100644
--- a/code/datums/components/rot.dm
+++ b/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
diff --git a/code/datums/diseases/advance/symptoms/heal.dm b/code/datums/diseases/advance/symptoms/heal.dm
index 0535265d02b2..00ca7e71aa4a 100644
--- a/code/datums/diseases/advance/symptoms/heal.dm
+++ b/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
diff --git a/code/datums/mutations/actions.dm b/code/datums/mutations/actions.dm
index 5471f0e7e461..70ef228f4717 100644
--- a/code/datums/mutations/actions.dm
+++ b/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!"))
diff --git a/code/game/machinery/airlock_cycle_control.dm b/code/game/machinery/airlock_cycle_control.dm
index 088fc61e6a16..598171d53e9b 100644
--- a/code/game/machinery/airlock_cycle_control.dm
+++ b/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()
diff --git a/code/game/machinery/electrolyzer.dm b/code/game/machinery/electrolyzer.dm
index 7ef92440e3e9..1acf24aa7ed9 100644
--- a/code/game/machinery/electrolyzer.dm
+++ b/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)
diff --git a/code/game/machinery/shuttle/shuttle_engine.dm b/code/game/machinery/shuttle/shuttle_engine.dm
index 2726e21b0b8f..6c62d06978b2 100644
--- a/code/game/machinery/shuttle/shuttle_engine.dm
+++ b/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)
diff --git a/code/game/machinery/spaceheater.dm b/code/game/machinery/spaceheater.dm
index cd52aa4f21fc..5dde2ea18601 100644
--- a/code/game/machinery/spaceheater.dm
+++ b/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
diff --git a/code/game/machinery/telecomms/telecomunications.dm b/code/game/machinery/telecomms/telecomunications.dm
index 26ef12cd4caf..3eabd4bd65e9 100644
--- a/code/game/machinery/telecomms/telecomunications.dm
+++ b/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
diff --git a/code/game/objects/items/devices/PDA/PDA.dm b/code/game/objects/items/devices/PDA/PDA.dm
index ca78ee00492a..be8d385e0efc 100644
--- a/code/game/objects/items/devices/PDA/PDA.dm
+++ b/code/game/objects/items/devices/PDA/PDA.dm
@@ -385,14 +385,13 @@ GLOBAL_LIST_EMPTY(PDAs)
if (3)
dat += "[PDAIMG(atmos)] Atmospheric Readings
"
- var/turf/T = user.loc
- if (isnull(T))
+ if (!isopenturf(get_turf(user)))
dat += "Unable to obtain a reading.
"
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
"
diff --git a/code/game/objects/items/devices/scanners.dm b/code/game/objects/items/devices/scanners.dm
index dbbc7b078747..c9151417110e 100644
--- a/code/game/objects/items/devices/scanners.dm
+++ b/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()
diff --git a/code/game/objects/structures/crates_lockers/crates/critter.dm b/code/game/objects/structures/crates_lockers/crates/critter.dm
index e122075e5ea7..0827192d7f72 100644
--- a/code/game/objects/structures/crates_lockers/crates/critter.dm
+++ b/code/game/objects/structures/crates_lockers/crates/critter.dm
@@ -35,4 +35,4 @@
if(tank)
return tank.air_contents
else
- return loc.return_air()
\ No newline at end of file
+ return loc?.return_air()
diff --git a/code/game/objects/structures/transit_tubes/station.dm b/code/game/objects/structures/transit_tubes/station.dm
index c2fa59f4fd6d..bb5777cbfa3e 100644
--- a/code/game/objects/structures/transit_tubes/station.dm
+++ b/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)
diff --git a/code/modules/atmospherics/machinery/airalarm.dm b/code/modules/atmospherics/machinery/airalarm.dm
index b46f06061c6d..ea306ca1e1e1 100644
--- a/code/modules/atmospherics/machinery/airalarm.dm
+++ b/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"]
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 23538111ad00..41e7d7aeb382 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/vent_pump.dm
+++ b/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
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 bb39bc4536ec..4d389012d034 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm
+++ b/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
diff --git a/code/modules/recycling/disposal/bin.dm b/code/modules/recycling/disposal/bin.dm
index 6e303976e0f7..d27a593f2811 100644
--- a/code/modules/recycling/disposal/bin.dm
+++ b/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