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/Move/AttackMoveActivity.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 System;
+using System.Collections.Generic;
+using OpenRA.Activities;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Activities
+{
+	public class AttackMoveActivity : Activity
+	{
+		readonly Func<Activity> getMove;
+		readonly bool isAssaultMove;
+		readonly AutoTarget autoTarget;
+		readonly AttackMove attackMove;
+
+		bool runningMoveActivity = false;
+		int token = Actor.InvalidConditionToken;
+		Target target = Target.Invalid;
+
+		public AttackMoveActivity(Actor self, Func<Activity> getMove, bool assaultMoving = false)
+		{
+			this.getMove = getMove;
+			autoTarget = self.TraitOrDefault<AutoTarget>();
+			attackMove = self.TraitOrDefault<AttackMove>();
+			isAssaultMove = assaultMoving;
+			ChildHasPriority = false;
+		}
+
+		protected override void OnFirstRun(Actor self)
+		{
+			if (attackMove == null || autoTarget == null)
+			{
+				QueueChild(getMove());
+				return;
+			}
+
+			if (isAssaultMove)
+				token = self.GrantCondition(attackMove.Info.AssaultMoveCondition);
+			else
+				token = self.GrantCondition(attackMove.Info.AttackMoveCondition);
+		}
+
+		public override bool Tick(Actor self)
+		{
+			if (IsCanceling || attackMove == null || autoTarget == null)
+				return TickChild(self);
+
+			// We are currently not attacking, so scan for new targets.
+			if (ChildActivity == null || runningMoveActivity)
+			{
+				// Use the standard ScanForTarget rate limit while we are running the move activity to save performance.
+				// Override the rate limit if our attack activity has completed so we can immediately acquire a new target instead of moving.
+				target = autoTarget.ScanForTarget(self, autoTarget.AllowMove, true, !runningMoveActivity);
+
+				// Cancel the current move activity and queue attack activities if we find a new target.
+				if (target.Type != TargetType.Invalid)
+				{
+					runningMoveActivity = false;
+					ChildActivity?.Cancel(self);
+
+					foreach (var ab in autoTarget.ActiveAttackBases)
+						QueueChild(ab.GetAttackActivity(self, AttackSource.AttackMove, target, autoTarget.AllowMove, false));
+				}
+
+				// Continue with the move activity (or queue a new one) when there are no targets.
+				if (ChildActivity == null)
+				{
+					runningMoveActivity = true;
+					QueueChild(getMove());
+				}
+			}
+
+			// If the move activity finished, we have reached our destination and there are no more enemies on our path.
+			return TickChild(self) && runningMoveActivity;
+		}
+
+		protected override void OnLastRun(Actor self)
+		{
+			if (token != Actor.InvalidConditionToken)
+				token = self.RevokeCondition(token);
+		}
+
+		public override IEnumerable<Target> GetTargets(Actor self)
+		{
+			if (ChildActivity != null)
+				return ChildActivity.GetTargets(self);
+
+			return Target.None;
+		}
+
+		public override IEnumerable<TargetLineNode> TargetLineNodes(Actor self)
+		{
+			foreach (var n in getMove().TargetLineNodes(self))
+				yield return n;
+		}
+	}
+}