transmission_method could probably be enumerated through #define. Is neater. (#10406)

* transmission_method-could-probably-be-enumerated-through-define.would-be-neater

* removes changelog

code/ATMOSPHERICS/components/binary_devices/dp_vent_pump.dm

@@ -175,7 +175,7 @@
 		return 0
 
 	var/datum/signal/signal = new
-	signal.transmission_method = 1 //radio signal
+	signal.transmission_method = TRANSMISSION_RADIO
 	signal.source = src
 
 	signal.data = list(

code/ATMOSPHERICS/components/binary_devices/passive_gate.dm

@@ -112,7 +112,7 @@
 		return 0
 
 	var/datum/signal/signal = new
-	signal.transmission_method = 1 //radio signal
+	signal.transmission_method = TRANSMISSION_RADIO
 	signal.source = src
 
 	signal.data = list(

code/ATMOSPHERICS/components/binary_devices/pump.dm

@@ -108,7 +108,7 @@ Thus, the two variables affect pump operation are set in New():
 		return 0
 
 	var/datum/signal/signal = new
-	signal.transmission_method = 1 //radio signal
+	signal.transmission_method = TRANSMISSION_RADIO
 	signal.source = src
 
 	signal.data = list(

code/ATMOSPHERICS/components/unary/outlet_injector.dm

@@ -1,4 +1,4 @@
-//Basically a one way passive valve. If the pressure inside is greater than the environment then gas will flow passively, 
+//Basically a one way passive valve. If the pressure inside is greater than the environment then gas will flow passively,
 //but it does not permit gas to flow back from the environment into the injector. Can be turned off to prevent any gas flow.
 //When it receives the "inject" signal, it will try to pump it's entire contents into the environment regardless of pressure, using power.
 
@@ -14,7 +14,7 @@
 	use_power = 0
 	idle_power_usage = 150		//internal circuitry, friction losses and stuff
 	power_rating = 15000	//15000 W ~ 20 HP
-	
+
 	var/injecting = 0
 
 	var/volume_rate = 50	//flow rate limit
@@ -29,7 +29,7 @@
 
 /obj/machinery/atmospherics/unary/outlet_injector/Initialize()
 	. = ..()
-	air_contents.volume = ATMOS_DEFAULT_VOLUME_PUMP + 500	//Give it a small reservoir for injecting. Also allows it to have a higher flow rate limit than vent pumps, to differentiate injectors a bit more. 
+	air_contents.volume = ATMOS_DEFAULT_VOLUME_PUMP + 500	//Give it a small reservoir for injecting. Also allows it to have a higher flow rate limit than vent pumps, to differentiate injectors a bit more.
 
 /obj/machinery/atmospherics/unary/outlet_injector/update_icon()
 	if(!powered())
@@ -66,18 +66,18 @@
 
 	var/power_draw = -1
 	var/datum/gas_mixture/environment = loc.return_air()
-	
+
 	if(environment && air_contents.temperature > 0)
 		var/transfer_moles = (volume_rate/air_contents.volume)*air_contents.total_moles //apply flow rate limit
 		power_draw = pump_gas(src, air_contents, environment, transfer_moles, power_rating)
-	
+
 	if (power_draw >= 0)
 		last_power_draw = power_draw
 		use_power(power_draw)
-		
+
 		if(network)
 			network.update = 1
-	
+
 	return 1
 
 /obj/machinery/atmospherics/unary/outlet_injector/proc/inject()
@@ -87,7 +87,7 @@
 	var/datum/gas_mixture/environment = loc.return_air()
 	if (!environment)
 		return 0
-	
+
 	injecting = 1
 
 	if(air_contents.temperature > 0)
@@ -110,7 +110,7 @@
 		return 0
 
 	var/datum/signal/signal = new
-	signal.transmission_method = 1 //radio signal
+	signal.transmission_method = TRANSMISSION_RADIO
 	signal.source = src
 
 	signal.data = list(

code/ATMOSPHERICS/components/unary/vent_pump.dm

@@ -236,7 +236,7 @@
 		return 0
 
 	var/datum/signal/signal = new
-	signal.transmission_method = 1 //radio signal
+	signal.transmission_method = TRANSMISSION_RADIO
 	signal.source = src
 
 	signal.data = list(

code/ATMOSPHERICS/components/unary/vent_scrubber.dm

@@ -104,7 +104,7 @@
 		return 0
 
 	var/datum/signal/signal = new
-	signal.transmission_method = 1 //radio signal
+	signal.transmission_method = TRANSMISSION_RADIO
 	signal.source = src
 	signal.data = list(
 		"area" = area_uid,
@@ -341,5 +341,3 @@
 		to_chat(user, "You are too far away to read the gauge.")
 	if(welded)
 		to_chat(user, "It seems welded shut.")
-
-