Iron curtain power implementation; Remove AutoActivate attribute to be part of the GPS implementation

OpenRa.Game/SupportPowers/IronCurtainPower.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using OpenRa.Game.Orders;
+using OpenRa.Game.Traits;
+
+namespace OpenRa.Game.SupportPowers
+{
+	class IronCurtainPower : ISupportPowerImpl
+	{
+		public void IsReadyNotification(SupportPower p)
+		{
+			Sound.Play("ironrdy1.aud");
+		}
+
+		public void IsChargingNotification(SupportPower p)
+		{
+			Sound.Play("ironchg1.aud");
+		}
+		
+		public void OnFireNotification(Actor target, int2 xy)
+		{
+			p.FinishActivate();
+			Game.controller.CancelInputMode();
+			Sound.Play("ironcur9.aud");
+			
+			// Play active anim
+			var ironCurtain = Game.world.Actors
+				.Where(a => a.Owner == p.Owner && a.traits.Contains<IronCurtain>())
+				.FirstOrDefault();
+			if (ironCurtain != null)
+				ironCurtain.traits.Get<RenderBuilding>().PlayCustomAnim(ironCurtain, "active");
+		}
+		SupportPower p;
+		public void Activate(SupportPower p)
+		{
+			this.p = p;
+			// Pick a building to use
+			Game.controller.orderGenerator = new IronCurtainOrderGenerator(this);
+			Sound.Play("slcttgt1.aud");
+		}
+	}
+}