Adds squad TTS

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

@@ -1,3 +1,8 @@
+// Defines for TTS modes.
+#define HEADSET_TTS_NONE 0
+#define HEADSET_TTS_SL_ONLY 1
+#define HEADSET_TTS_ALL 2
+
 // Used for translating channels to tokens on examination
 GLOBAL_LIST_INIT(channel_tokens, list(
 	RADIO_CHANNEL_REQUISITIONS = RADIO_TOKEN_REQUISITIONS,
@@ -26,7 +31,8 @@ GLOBAL_LIST_INIT(channel_tokens, list(
 
 	equip_slot_flags = ITEM_SLOT_EARS
 	var/obj/item/encryptionkey/keyslot2 = null
-
+	/// Current squad TTS mode the headset is switched to; defaults to no radio TTS
+	var/squad_tts_mode = HEADSET_TTS_NONE
 
 /obj/item/radio/headset/Initialize(mapload)
 	if(keyslot)
@@ -156,6 +162,20 @@ GLOBAL_LIST_INIT(channel_tokens, list(
 	channels[RADIO_CHANNEL_REQUISITIONS] = !channels[RADIO_CHANNEL_REQUISITIONS]
 	balloon_alert(user, "toggles supply comms [channels[RADIO_CHANNEL_REQUISITIONS] ? "on" : "off"].")
 
+//Toggles TTS mode. If TTS is enabled, we will play TTS for any radio messages passed through the headset.
+/obj/item/radio/headset/RightClick(mob/user)
+	. = ..()
+	switch(squad_tts_mode)
+		if(HEADSET_TTS_NONE)
+			user.balloon_alert(user, "You switch the TTS mode to \"SL Only\"")
+			squad_tts_mode = HEADSET_TTS_SL_ONLY
+		if(HEADSET_TTS_SL_ONLY)
+			user.balloon_alert(user, "You switch the TTS mode to \"All\"")
+			squad_tts_mode = HEADSET_TTS_ALL
+		if(HEADSET_TTS_ALL)
+			user.balloon_alert(user, "You switch the TTS mode to \"None\"")
+			squad_tts_mode = HEADSET_TTS_NONE
+
 /obj/item/radio/headset/vendor_equip(mob/user)
 	..()
 	return user.equip_to_appropriate_slot(src)

code/game/objects/machinery/telecomms/broadcasting.dm

@@ -199,6 +199,20 @@
 			continue
 		hearer.Hear(rendered, virt, language, message, frequency, spans)
 
+
+	//Now we can handle radio TTS for squads
+
+	var/mob/living/carbon/human/speaker = virt.source
+	if(speaker?.assigned_squad && speaker.voice && !(speaker.client?.prefs.muted & MUTE_TTS) && !is_banned_from(speaker.ckey, "TTS"))
+		var/headset_target = HEADSET_TTS_ALL
+		if(speaker.assigned_squad.squad_leader == speaker)
+			headset_target = HEADSET_TTS_SL_ONLY //Lower the bar if the speaker is the active aSL
+
+		for(var/mob/living/carbon/human/potential_squadmate in receive)
+			var/obj/item/radio/headset/radio = potential_squadmate.wear_ear
+			if(speaker.assigned_squad != potential_squadmate.assigned_squad && radio.squad_tts_mode >= headset_target )
+				INVOKE_ASYNC(SStts, TYPE_PROC_REF(/datum/controller/subsystem/tts, queue_tts_message), potential_squadmate, html_decode(message), language, speaker.voice, potential_squadmate.voice_filter, local = TRUE, pitch = speaker.pitch, special_filters = TTS_FILTER_RADIO)
+
 	var/spans_part = ""
 	if(length(spans))
 		spans_part = "(spans:"