Finally optimize radios

code/_helpers/game.dm

@@ -223,11 +223,11 @@
 
 	return hear
 
-
+var/mobs_radio_range_fired = 1						//CHOMPEdit
 /proc/get_mobs_in_radio_ranges(var/list/obj/item/device/radio/radios)
 
 	set background = 1
-
+	var/our_iter = num2text(++mobs_radio_range_fired)	//CHOMPEdit
 	. = list()
 	// Returns a list of mobs who can hear any of the radios given in @radios
 	var/list/speaker_coverage = list()
@@ -235,15 +235,25 @@
 		var/obj/item/device/radio/R = r // You better fucking be a radio.
 		var/turf/speaker = get_turf(R)
 		if(speaker)
-			for(var/turf/T in hear(R.canhear_range,speaker))
+			for(var/turf/T in R.can_broadcast_to())	//CHOMPEdit
+				T.temp_check[our_iter] = TRUE
 				speaker_coverage[T] = R
 
 
 	// Try to find all the players who can hear the message
+	//CHOMPEdit Begin
+	//So, to explain a bit here: The old code that used to be here was pretty slow for a few reasons, most of which have been addressed now.
+	//Unsurprisingly, checking through the entire list of turfs within a radio's range for every mob's turf to see if it's in there is very slow.
+	//So, instead, we set a variable in a list on the turf that's unique to this runthrough(and thus multiple of these can run simultaneously)
+	//Then we just have to check if that variable is true for the turf the mob is on, and if it is, add that mob to our list.
 	for(var/i = 1; i <= player_list.len; i++)
 		var/mob/M = player_list[i]
-		if(M.can_hear_radio(speaker_coverage))
+		var/turf/T = get_turf(M)
+		if(istype(T) && T.temp_check[our_iter])
 			. += M
+	for(var/turf/T in speaker_coverage)
+		T.temp_check -= our_iter //Freeing up the memory.
+	//CHOMPEdit End
 	return .
 
 /mob/proc/can_hear_radio(var/list/hearturfs)