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/Traits/Air/AttackAircraft.cs

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+#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.Activities;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	// TODO: Add CurleyShuffle (TD, TS), Circle (Generals Gunship-style)
+	public enum AirAttackType { Default, Hover, Strafe }
+
+	public class AttackAircraftInfo : AttackFollowInfo, Requires<AircraftInfo>
+	{
+		[Desc("Attack behavior. Currently supported types are:",
+			"Default: Attack while following the default movement rules.",
+			"Hover: Hover, even if the Aircraft can't hover while idle.",
+			"Strafe: Perform a fixed-length attack run on the target.")]
+		public readonly AirAttackType AttackType = AirAttackType.Default;
+
+		[Desc(
+			"Distance the strafing aircraft makes to a target before turning for another pass. " +
+			"When set to WDist.Zero this defaults to the maximum armament range.")]
+		public readonly WDist StrafeRunLength = WDist.Zero;
+
+		public override object Create(ActorInitializer init) { return new AttackAircraft(init.Self, this); }
+	}
+
+	public class AttackAircraft : AttackFollow
+	{
+		public new readonly AttackAircraftInfo Info;
+		readonly AircraftInfo aircraftInfo;
+
+		public AttackAircraft(Actor self, AttackAircraftInfo info)
+			: base(self, info)
+		{
+			Info = info;
+			aircraftInfo = self.Info.TraitInfo<AircraftInfo>();
+		}
+
+		public override Activity GetAttackActivity(
+			Actor self, AttackSource source, in Target newTarget, bool allowMove, bool forceAttack, Color? targetLineColor = null)
+		{
+			return new FlyAttack(self, source, newTarget, forceAttack, targetLineColor);
+		}
+
+		protected override bool CanAttack(Actor self, in Target target)
+		{
+			// Don't fire while landed or when outside the map.
+			if (self.World.Map.DistanceAboveTerrain(self.CenterPosition).Length < aircraftInfo.MinAirborneAltitude
+				|| !self.World.Map.Contains(self.Location))
+				return false;
+
+			if (!base.CanAttack(self, target))
+				return false;
+
+			return TargetInFiringArc(self, target, Info.FacingTolerance);
+		}
+	}
+}