Add fake ambient occlusion

code/ATMOSPHERICS/components/unary_devices/cold_sink.dm

@@ -13,6 +13,8 @@
 	var/current_heat_capacity = 50000 //totally random
 
 /obj/machinery/atmospherics/unary/cold_sink/update_icon()
+	..()
+
 	if(node)
 		icon_state = "intact_[on?("on"):("off")]"
 	else
@@ -20,8 +22,6 @@
 
 		on = 0
 
-	return
-
 /obj/machinery/atmospherics/unary/cold_sink/process_atmos()
 	..()
 	if(!on)

code/ATMOSPHERICS/components/unary_devices/generator_input.dm

@@ -9,12 +9,12 @@
 	var/update_cycle
 
 /obj/machinery/atmospherics/unary/generator_input/update_icon()
+	..()
+
 	if(node)
 		icon_state = "intact"
 	else
 		icon_state = "exposed"
 
-	return
-
 /obj/machinery/atmospherics/unary/generator_input/proc/return_exchange_air()
 	return air_contents

code/ATMOSPHERICS/components/unary_devices/heat_exchanger.dm

@@ -13,13 +13,13 @@
 	burn_state = LAVA_PROOF
 
 /obj/machinery/atmospherics/unary/heat_exchanger/update_icon()
+	..()
+
 	if(node)
 		icon_state = "intact"
 	else
 		icon_state = "exposed"
 
-	return
-
 /obj/machinery/atmospherics/unary/heat_exchanger/atmos_init()
 	if(!partner)
 		var/partner_connect = turn(dir,180)

code/ATMOSPHERICS/components/unary_devices/heat_source.dm

@@ -13,6 +13,8 @@
 	var/current_heat_capacity = 50000 //totally random
 
 /obj/machinery/atmospherics/unary/heat_reservoir/update_icon()
+	..()
+	
 	if(node)
 		icon_state = "intact_[on?("on"):("off")]"
 	else
@@ -20,8 +22,6 @@
 
 		on = 0
 
-	return
-
 /obj/machinery/atmospherics/unary/heat_reservoir/process_atmos()
 	..()
 	if(!on)

code/ATMOSPHERICS/components/unary_devices/outlet_injector.dm

@@ -38,6 +38,8 @@
 	return ..()
 
 /obj/machinery/atmospherics/unary/outlet_injector/update_icon()
+	..()
+	
 	if(!powered())
 		icon_state = "off"
 	else

code/ATMOSPHERICS/components/unary_devices/oxygen_generator.dm

@@ -14,6 +14,8 @@
 	var/oxygen_content = 10
 
 /obj/machinery/atmospherics/unary/oxygen_generator/update_icon()
+	..()
+
 	if(node)
 		icon_state = "intact_[on?("on"):("off")]"
 	else
@@ -21,8 +23,6 @@
 
 		on = 0
 
-	return
-
 /obj/machinery/atmospherics/unary/oxygen_generator/New()
 	..()
 

code/ATMOSPHERICS/components/unary_devices/portables_connector.dm

@@ -18,6 +18,7 @@
 	return ..()
 
 /obj/machinery/atmospherics/unary/portables_connector/update_icon()
+	..()
 	icon_state = "connector"
 
 /obj/machinery/atmospherics/unary/portables_connector/update_underlays()

code/ATMOSPHERICS/components/unary_devices/thermal_plate.dm

@@ -11,10 +11,12 @@
 	desc = "Transfers heat to and from an area"
 
 /obj/machinery/atmospherics/unary/thermal_plate/update_icon()
-	var/prefix=""
+	..()
+
+	var/prefix = ""
 	//var/suffix="_idle" // Also available: _heat, _cool
 	if(level == 1 && istype(loc, /turf/simulated))
-		prefix="h"
+		prefix = "h"
 	icon_state = "[prefix]off"
 
 /obj/machinery/atmospherics/unary/thermal_plate/process_atmos()

code/ATMOSPHERICS/components/unary_devices/vent_pump.dm

@@ -77,6 +77,10 @@
 	air_contents.volume = 1000
 
 /obj/machinery/atmospherics/unary/vent_pump/update_icon(var/safety = 0)
+	..()
+	
+	plane = FLOOR_PLANE
+
 	if(!check_icon_cache())
 		return
 

code/ATMOSPHERICS/components/unary_devices/vent_scrubber.dm

@@ -91,6 +91,10 @@
 	return 1
 
 /obj/machinery/atmospherics/unary/vent_scrubber/update_icon(var/safety = 0)
+	..()
+	
+	plane = FLOOR_PLANE
+
 	if(!check_icon_cache())
 		return