initial commit - game folder + maps + dme

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

@@ -101,25 +101,27 @@
 	..()
 	ui_interact(user, state = GLOB.default_state)
 
-/obj/item/device/radio/intercom/receive_range(freq, level)
+/obj/item/device/radio/intercom/can_receive(freq, level)
 	if(!on)
-		return -1
+		return FALSE
 	if(wires.is_cut(WIRE_RX))
-		return -1
+		return FALSE
 	if(!(0 in level))
 		var/turf/position = get_turf(src)
 		if(isnull(position) || !(position.z in level))
-			return -1
+			return FALSE
 	if(!src.listening)
-		return -1
-	if(freq == GLOB.SYND_FREQ)
+		return FALSE
+	if(freq == FREQ_SYNDICATE)
 		if(!(src.syndie))
-			return -1//Prevents broadcast of messages over devices lacking the encryption
+			return FALSE//Prevents broadcast of messages over devices lacking the encryption
 
-	return canhear_range
+	return TRUE
 
 
 /obj/item/device/radio/intercom/Hear(message, atom/movable/speaker, message_langs, raw_message, radio_freq, list/spans, message_mode)
+	if (message_mode == MODE_INTERCOM)
+		return  // Avoid hearing the same thing twice
 	if(!anyai && !(speaker in ai))
 		return
 	..()