Announcement refactor

code/game/objects/items/devices/radio/headset.dm

@@ -63,18 +63,16 @@
 		return RADIO_CONNECTION_FAIL
 
 	return ..()
-
-/obj/item/device/radio/headset/receive_range(freq, level, aiOverride = 0)
-	if(aiOverride)
-		return ..(freq, level)
+	
+/obj/item/device/radio/headset/is_listening()
 	if(ishuman(loc))
 		var/mob/living/carbon/human/H = loc
 		if(H.l_ear == src || H.r_ear == src)
-			return ..(freq, level)
-	else if(isanimal(loc))
-		// frankly, all the ones with inventory are small enough to not warrant snowflaking the slot check somehow
-		return ..(freq, level)
-	return -1
+			return ..()
+	else if(isanimal(loc) || isAI(loc))
+		return ..()
+	
+	return FALSE
 
 /obj/item/device/radio/headset/alt
 	name = "bowman headset"
@@ -304,10 +302,10 @@
 	var/myAi = null    // Atlantis: Reference back to the AI which has this radio.
 	var/disabledAi = 0 // Atlantis: Used to manually disable AI's integrated radio via intellicard menu.
 
-/obj/item/device/radio/headset/heads/ai_integrated/receive_range(freq, level)
+/obj/item/device/radio/headset/heads/ai_integrated/is_listening()
 	if(disabledAi)
-		return -1 //Transciever Disabled.
-	return ..(freq, level, 1)
+		return FALSE
+	return ..()
 
 /obj/item/device/radio/headset/attackby(obj/item/weapon/W as obj, mob/user as mob)
 	user.set_machine(src)

code/game/objects/items/devices/radio/intercom.dm

@@ -120,15 +120,13 @@
 		attack_self(user)
 
 /obj/item/device/radio/intercom/receive_range(freq, level)
-	if(!on)
+	if(!is_listening())
 		return -1
 	if(!(0 in level))
 		var/turf/position = get_turf(src)
 		// TODO: Integrate radio with the space manager
 		if(isnull(position) || !(position.z in level))
 			return -1
-	if(!src.listening)
-		return -1
 	if(freq in ANTAG_FREQS)
 		if(!(src.syndie))
 			return -1//Prevents broadcast of messages over devices lacking the encryption

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

@@ -71,6 +71,7 @@ var/global/list/default_medbay_channels = list(
 		initialize()
 
 	internal_channels = default_internal_channels.Copy()
+	global_radios |= src
 
 /obj/item/device/radio/Destroy()
 	qdel(wires)
@@ -80,6 +81,7 @@ var/global/list/default_medbay_channels = list(
 		for(var/ch_name in channels)
 			radio_controller.remove_object(src, radiochannels[ch_name])
 	patch_link = null
+	global_radios -= src
 	return ..()
 
 
@@ -530,19 +532,15 @@ var/global/list/default_medbay_channels = list(
 	// what the range is in which mobs will hear the radio
 	// returns: -1 if can't receive, range otherwise
 
-	if(!wires || wires.IsIndexCut(WIRE_RECEIVE))
-		return -1
-	if(!listening)
+	if(!is_listening())
 		return -1
 	if(!(0 in level))
 		var/turf/position = get_turf(src)
 		if(!position || !(position.z in level))
 			return -1
 	if(freq in ANTAG_FREQS)
-		if(!(src.syndie))//Checks to see if it's allowed on that frequency, based on the encryption keys
+		if(!(syndie))//Checks to see if it's allowed on that frequency, based on the encryption keys
 			return -1
-	if(!on)
-		return -1
 	if(!freq) //recieved on main frequency
 		if(!listening)
 			return -1
@@ -559,11 +557,26 @@ var/global/list/default_medbay_channels = list(
 	return canhear_range
 
 /obj/item/device/radio/proc/send_hear(freq, level)
-
 	var/range = receive_range(freq, level)
 	if(range > -1)
 		return get_mobs_in_view(canhear_range, src)
+		
+/obj/item/device/radio/proc/is_listening()
+	var/is_listening = TRUE
+	if(!on)
+		is_listening = FALSE
+	if(!wires || wires.IsIndexCut(WIRE_RECEIVE))
+		is_listening = FALSE
+	if(!listening)
+		is_listening = FALSE
 
+	return is_listening
+		
+/obj/item/device/radio/proc/send_announcement()
+	if(is_listening())
+		return get_mobs_in_view(canhear_range, src)
+		
+	return null
 
 /obj/item/device/radio/examine(mob/user, var/distance = -1)
 	. = ..(user, distance)