Radio Jammers (#502)

Adds radio jammers for antags and improvised version as well.

code/modules/assembly/signaler.dm

@@ -100,7 +100,11 @@
 
 
 	proc/signal()
-		if(!radio_connection) return
+		if(!radio_connection)
+			return
+
+		if(within_jamming_range(src))
+			return
 
 		var/datum/signal/signal = new
 		signal.source = src
@@ -129,9 +133,18 @@
 
 
 	receive_signal(datum/signal/signal)
-		if(!signal)	return 0
-		if(signal.encryption != code)	return 0
-		if(!(src.wires & WIRE_RADIO_RECEIVE))	return 0
+		if(!signal)
+			return 0
+
+		if(within_jamming_range(src))
+			return 0
+
+		if(signal.encryption != code)
+			return 0
+
+		if(!(src.wires & WIRE_RADIO_RECEIVE))
+			return 0
+
 		pulse(1)
 
 		if(!holder)

code/modules/mob/language/station.dm

@@ -91,8 +91,13 @@
 		speaker_mask = speaker.name
 	var/msg = "<i><span class='game say'>[name], <span class='name'>[speaker_mask]</span> [format_message(message, get_spoken_verb(message))]</span></i>"
 
+	if (within_jamming_range(speaker))
+		// The user thinks that the message got through.
+		speaker << msg
+		return
+
 	for(var/mob/player in player_list)
-		if(istype(player,/mob/dead) || ((src in player.languages) || check_special_condition(player)))
+		if(istype(player,/mob/dead) || ((src in player.languages && !within_jamming_range(player)) || check_special_condition(player)))
 			player << msg
 
 /datum/language/bug/check_special_condition(var/mob/other)
@@ -102,6 +107,8 @@
 		return 0
 	if(istype(M, /mob/new_player))
 		return 0
+	if(within_jamming_range(other))
+		return 0
 	if(locate(/obj/item/organ/vaurca/neuralsocket) in M.internal_organs)
 		return 1
 

code/modules/power/cell.dm

@@ -103,7 +103,15 @@
 			message_admins("LOG: [user.name] ([user.ckey]) injected a power cell with phoron, rigging it to explode.")
 
 		S.reagents.clear_reagents()
+	else if(istype(W, /obj/item/device/assembly_holder))
+		var/obj/item/device/assembly_holder/assembly = W
+		if (istype(assembly.a_left, /obj/item/device/assembly/signaler) && istype(assembly.a_right, /obj/item/device/assembly/signaler))
+			user.drop_item()
+			user.drop_from_inventory(src)
 
+			new /obj/item/device/radiojammer/improvised(assembly, src, user)
+		else
+			user << "<span class='notice'>You'd need both devices to be signallers for this to work.</span>"
 
 /obj/item/weapon/cell/proc/explode()
 	var/turf/T = get_turf(src.loc)