move aircraft code into Mods.RA/Air/

OpenRA.Mods.RA/Air/FlyTimed.cs

@@ -0,0 +1,48 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2010 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 LICENSE.
+ */
+#endregion
+
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Air
+{
+	public class FlyTimed : CancelableActivity
+	{
+		int remainingTicks;
+
+		public FlyTimed(int ticks) { remainingTicks = ticks; }
+
+		public override IActivity Tick(Actor self)
+		{
+			if( IsCanceled ) return NextActivity;
+			var targetAltitude = self.Info.Traits.Get<PlaneInfo>().CruiseAltitude;
+			if (remainingTicks-- == 0) return NextActivity;
+			FlyUtil.Fly(self, targetAltitude);
+			return this;
+		}
+	}
+
+	public class FlyOffMap : CancelableActivity
+	{
+		public bool Interruptible = true;
+
+		public override IActivity Tick(Actor self)
+		{
+			var targetAltitude = self.Info.Traits.Get<PlaneInfo>().CruiseAltitude;
+			if (IsCanceled || !self.World.Map.IsInMap(self.Location)) return NextActivity;
+			FlyUtil.Fly(self, targetAltitude);
+			return this;
+		}
+
+		protected override bool OnCancel( Actor self )
+		{
+			return Interruptible;
+		}
+	}
+}