new support power impl

OpenRa.Game/Traits/GpsPower.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using OpenRa.Effects;
+
+namespace OpenRa.Traits
+{
+	class GpsPowerInfo : SupportPowerInfo
+	{
+		public readonly int RevealDelay = 0;
+
+		public override object Create(Actor self) { return new GpsPower(self, this); }
+	}
+
+	class GpsPower : SupportPower
+	{
+		public GpsPower(Actor self, GpsPowerInfo info) : base(self, info) { }
+
+		protected override void OnFinishCharging()
+		{
+			var launchSite = Owner.World.Actors
+				.FirstOrDefault(a => a.Owner == Owner && a.traits.Contains<GpsLaunchSite>());
+
+			if (launchSite == null)
+				return;
+
+			Owner.World.AddFrameEndTask(w =>
+			{
+				w.Add(new SatelliteLaunch(launchSite));
+				w.Add(new DelayedAction((Info as GpsPowerInfo).RevealDelay * 25, 
+					() => Owner.Shroud.HasGPS = true));
+			});
+
+			FinishActivate();
+		}
+	}
+}