Adds RallyPoint to Airfield, queues TakeOff

OpenRA.Mods.RA/Air/TakeOff.cs

@@ -0,0 +1,40 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Air
+{
+	public class TakeOff : Activity
+	{
+		public override Activity Tick(Actor self)
+		{
+			var aircraft = self.Trait<Aircraft>();
+
+			self.CancelActivity();
+
+			var reservation = aircraft.Reservation;
+			if (reservation != null)
+			{
+				reservation.Dispose();
+				reservation = null;
+			}
+
+			var host = aircraft.GetActorBelow();
+			var hasHost = host != null;
+			var rp = hasHost ? host.TraitOrDefault<RallyPoint>() : null;
+
+			var destination = rp != null ? rp.rallyPoint :
+				(hasHost ? host.CenterPosition.ToCPos() : self.CenterPosition.ToCPos());
+
+			return new AttackMove.AttackMoveActivity(self, self.Trait<IMove>().MoveTo(destination, 1));
+		}
+	}
+}