moved air unit support to ra

OpenRA.Mods.RA/Activities/FlyTimed.cs

@@ -0,0 +1,68 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Activities
+{
+	public class FlyTimed : IActivity
+	{
+		public IActivity NextActivity { get; set; }
+		int remainingTicks;
+
+		public FlyTimed(int ticks) { remainingTicks = ticks; }
+
+		public IActivity Tick(Actor self)
+		{
+			var targetAltitude = self.Info.Traits.Get<PlaneInfo>().CruiseAltitude;
+			if (remainingTicks-- == 0) return NextActivity;
+			FlyUtil.Fly(self, targetAltitude);
+			return this;
+		}
+
+		public void Cancel(Actor self) { remainingTicks = 0; NextActivity = null; }
+	}
+
+	public class FlyOffMap : IActivity
+	{
+		public IActivity NextActivity { get; set; }
+		bool isCanceled;
+		public bool Interruptible = true;
+
+		public 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;
+		}
+
+		public void Cancel(Actor self)
+		{
+			if (Interruptible)
+			{
+				isCanceled = true; 
+				NextActivity = null;
+			}
+		}
+	}
+
+}