move aircraft code into Mods.RA/Air/

OpenRA.Mods.RA/Air/ReturnOnIdle.cs

@@ -0,0 +1,53 @@
+#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.Mods.RA.Activities;
+using OpenRA.Traits;
+using OpenRA.Traits.Activities;
+
+namespace OpenRA.Mods.RA.Air
+{
+	class ReturnOnIdleInfo : TraitInfo<ReturnOnIdle> { }
+
+	// fly home or fly-off-map behavior for idle planes
+
+	class ReturnOnIdle : INotifyIdle
+	{
+		public void Idle(Actor self)
+		{
+			var altitude = self.Trait<Aircraft>().Altitude;
+			if (altitude == 0) return;	// we're on the ground, let's stay there.
+
+			var airfield = ReturnToBase.ChooseAirfield(self);
+			if (airfield != null)
+			{
+				self.QueueActivity(new ReturnToBase(self, airfield));
+				self.QueueActivity(new Rearm());
+			}
+			else
+			{
+				//Game.Debug("Plane has nowhere to land; flying away");
+				self.QueueActivity(new FlyOffMap());
+				self.QueueActivity(new RemoveSelf());
+			}
+		}
+	}
+
+	class FlyAwayOnIdleInfo : TraitInfo<FlyAwayOnIdle> { }
+
+	class FlyAwayOnIdle : INotifyIdle
+	{
+		public void Idle(Actor self)
+		{
+			self.QueueActivity(new FlyOffMap());
+			self.QueueActivity(new RemoveSelf());
+		}
+	}
+}