Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

OpenRA.Mods.Common/Activities/Air/FlyOffMap.cs

@@ -0,0 +1,70 @@
+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * 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 OpenRA.Activities;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Activities
+{
+	public class FlyOffMap : Activity
+	{
+		readonly Aircraft aircraft;
+		readonly Target target;
+		readonly bool hasTarget;
+		int endingDelay;
+
+		public FlyOffMap(Actor self, int endingDelay = 25)
+		{
+			aircraft = self.Trait<Aircraft>();
+			ChildHasPriority = false;
+			this.endingDelay = endingDelay;
+		}
+
+		public FlyOffMap(Actor self, in Target target, int endingDelay = 25)
+			: this(self, endingDelay)
+		{
+			this.target = target;
+			hasTarget = true;
+		}
+
+		protected override void OnFirstRun(Actor self)
+		{
+			if (hasTarget)
+			{
+				QueueChild(new Fly(self, target));
+				QueueChild(new FlyForward(self));
+				return;
+			}
+
+			// VTOLs must take off first if they're not at cruise altitude
+			if (aircraft.Info.VTOL && self.World.Map.DistanceAboveTerrain(aircraft.CenterPosition) != aircraft.Info.CruiseAltitude)
+				QueueChild(new TakeOff(self));
+
+			QueueChild(new FlyForward(self));
+		}
+
+		public override bool Tick(Actor self)
+		{
+			// Refuse to take off if it would land immediately again.
+			if (aircraft.ForceLanding)
+				Cancel(self);
+
+			if (IsCanceling)
+				return true;
+
+			if (!self.World.Map.Contains(self.Location) && --endingDelay < 0)
+				ChildActivity.Cancel(self);
+
+			return TickChild(self);
+		}
+	}
+}