Rad Storm (#10945)

Non-shielded areas now get a pulsating green overlay when a radiation storm is active.

code/modules/events/radiation_storm.dm

@@ -15,6 +15,11 @@
 
 /datum/event/radiation_storm/start()
 	make_maint_all_access()
+	for(var/area/A in all_areas)
+		if(A.flags & RAD_SHIELDED)
+			continue
+		A.radiation_active = TRUE
+		A.update_icon()
 
 /datum/event/radiation_storm/tick()
 	if(activeFor == enterBelt)
@@ -40,6 +45,11 @@
 	if(faked)
 		return
 	revoke_maint_all_access()
+	for(var/area/A in all_areas)
+		if(A.flags & RAD_SHIELDED)
+			continue
+		A.radiation_active = null
+		A.update_icon()
 
 /datum/event/radiation_storm/syndicate/radiate()
 	return