Makes headset sounds not insane (WHY DO THEY HAVE A RANGE OF 17 TI:LE…

…S?) (#215)

* the 17 tile range is insane

* makes that use a define

modular_nova/modules/radiosound/code/headset.dm

@@ -1,13 +1,16 @@
 /obj/item/radio/headset
+	/// The sound that plays when someone uses the headset
 	var/radiosound = 'modular_nova/modules/radiosound/sound/radio/common.ogg'
+	/// The volume of the radio sound we make
+	var/radio_sound_volume = 25
 
 /obj/item/radio/headset/syndicate //disguised to look like a normal headset for stealth ops
 	radiosound = 'modular_nova/modules/radiosound/sound/radio/syndie.ogg'
 
 /obj/item/radio/headset/headset_sec
 	radiosound = 'modular_nova/modules/radiosound/sound/radio/security.ogg'
 
-/obj/item/radio/headset/talk_into(mob/living/M, message, channel, list/spans, datum/language/language, list/message_mods, direct = TRUE)
+/obj/item/radio/headset/talk_into(mob/living/mob_in_question, message, channel, list/spans, datum/language/language, list/message_mods, direct = TRUE)
 	if(radiosound && listening)
-		playsound(M, radiosound, rand(20, 30), 0, 0, SOUND_FALLOFF_EXPONENT)
+		playsound(mob_in_question, radiosound, radio_sound_volume, TRUE, SHORT_RANGE_SOUND_EXTRARANGE, SOUND_FALLOFF_EXPONENT)
 	. = ..()