Add AutoTakesOff for Spy Drone

OpenRA.Mods.Gen/OpenRA.Mods.Gen.csproj

@@ -111,6 +111,7 @@
     <Compile Include="Traits\ShootableBallisticMissile.cs" />
     <Compile Include="Traits\EmitInfantryOnDeath.cs" />
     <Compile Include="Traits\Air\BlimpFallsToEarth.cs" />
+    <Compile Include="Traits\Air\AutoTakesOff.cs" />
     <Compile Include="Traits\CargoCashTrickler.cs" />
     <Compile Include="Traits\CargoTransformer.cs" />
     <Compile Include="Traits\Conditions\GrantTimedConditionOnDeploy.cs" />

OpenRA.Mods.Gen/Traits/Air/AutoTakesOff.cs

@@ -0,0 +1,35 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2017 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, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.Activities;
+using OpenRA.Mods.Common.Activities;
+using OpenRA.Mods.Common.Orders;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("This actor takes of automatically on creation.")]
+	public class AutoTakesOffInfo : ITraitInfo, Requires<AircraftInfo>
+	{
+		public object Create(ActorInitializer init) { return new AutoTakesOff(this); }
+	}
+
+	public class AutoTakesOff : INotifyAddedToWorld
+	{
+		public AutoTakesOff(AutoTakesOffInfo info) { }
+
+		public void AddedToWorld(Actor self)
+		{
+			self.QueueActivity(new FlyCircle(self));
+		}
+	}
+}