Mostly implemented Sonar Pulse

OpenRa.Game/Traits/SonarPulsePower.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using OpenRa.Orders;
+
+namespace OpenRa.Traits
+{
+	public class SonarPulsePowerInfo : SupportPowerInfo
+	{
+		public override object Create(Actor self) { return new SonarPulsePower(self, this); }
+	}
+
+	public class SonarPulsePower : SupportPower
+	{
+		public SonarPulsePower(Actor self, SonarPulsePowerInfo info) : base(self, info) { }
+
+		protected override void OnBeginCharging() { }
+		protected override void OnFinishCharging() { Sound.Play("pulse1.aud"); }
+		protected override void OnActivate()
+		{
+			// Question: Is this method synced? or does it have to go via an order?
+			
+			// TODO: Reveal submarines
+			
+			// Should this play for all players?
+			Sound.Play("sonpulse.aud");
+			FinishActivate();
+		}
+	}
+}