Optimized radio code broadcasting code.

Rather than calling a function on every single radio object which expensively collects hearers(in closets etc.), the proc will now instead build a list of radios. This list is then passed to another proc, which iterates through all clients in the world, and checks if the client's mob can hear the message.

Note that I did shallow testing, but deeper issues may still be present with stuff like pAIs which I wasn't able to test on my single player server. If any other problems are found, please notify me.


git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4019 316c924e-a436-60f5-8080-3fe189b3f50e

code/defines/procs/gamehelpers.dm

@@ -219,6 +219,31 @@
 
 	return hear
 
+
+/proc/get_mobs_in_radio_ranges(var/list/obj/item/device/radio/radios)
+	// Returns a list of mobs who can hear any of the radios given in @radios
+
+	var/list/hearers = list()
+
+	// Try to find all the players who can hear the message
+	for(var/key in client_list)
+		var/client/C = client_list[key]
+		var/mob/M = C.mob
+		if(!M) continue
+
+		var/atom/ear = M.get_ear()
+		if(!ear) continue
+
+		// Now see if they're near any broadcasting radio
+		for(var/obj/item/device/radio/R in radios)
+			var/turf/radio_loc = get_turf(R)
+			if(ear in view(R.canhear_range,radio_loc))
+				hearers += M
+				break
+
+	return hearers
+
+
 #define SIGN(X) ((X<0)?-1:1)
 
 proc