gps support power wired up properly

OpenRa.Game/SupportPowers/GpsSatellite.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using OpenRa.Game.Effects;
+
+namespace OpenRa.Game.SupportPowers
+{
+	class GpsSatellite : ISupportPowerImpl
+	{
+		const int revealDelay = 30 * 25;
+
+		public void Activate(SupportPower p)
+		{
+			var launchSite = Game.world.Actors
+				.FirstOrDefault( a => a.Owner == p.Owner && a.traits.Contains<Traits.GpsSatellite>() );
+
+			if (launchSite == null)
+				return;
+
+			Game.world.AddFrameEndTask(w =>
+				{
+					w.Add(new SatelliteLaunch(launchSite));
+					w.Add(new DelayedAction(revealDelay, () => p.Owner.Shroud.HasGPS = true));
+				});
+
+			p.FinishActivate();
+		}
+	}
+}