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/Render/WithIdleAnimation.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.Collections.Immutable;
+using System.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits.Render
+{
+	[Desc("Periodically plays an idle animation, replacing the default body animation.")]
+	public class WithIdleAnimationInfo : ConditionalTraitInfo, Requires<WithSpriteBodyInfo>
+	{
+		[SequenceReference]
+		[Desc("Sequence names to use.")]
+		public readonly ImmutableArray<string> Sequences = ["active"];
+
+		[Desc("The amount of time (in ticks) between animations. Two values indicate a range between which a random value is chosen.")]
+		public readonly ImmutableArray<int> Interval = [750];
+
+		[Desc("Which sprite body to play the animation on.")]
+		public readonly string Body = "body";
+
+		public override object Create(ActorInitializer init) { return new WithIdleAnimation(init.Self, this); }
+	}
+
+	public class WithIdleAnimation : ConditionalTrait<WithIdleAnimationInfo>, ITick
+	{
+		readonly WithSpriteBody wsb;
+		int ticks;
+
+		public WithIdleAnimation(Actor self, WithIdleAnimationInfo info)
+			: base(info)
+		{
+			wsb = self.TraitsImplementing<WithSpriteBody>().Single(w => w.Info.Name == Info.Body);
+			ticks = Util.RandomInRange(self.World.SharedRandom, info.Interval);
+		}
+
+		void ITick.Tick(Actor self)
+		{
+			if (IsTraitDisabled)
+				return;
+
+			if (--ticks <= 0)
+			{
+				wsb.PlayCustomAnimation(self, Info.Sequences.Random(Game.CosmeticRandom));
+				ticks = Util.RandomInRange(self.World.SharedRandom, Info.Interval);
+			}
+		}
+
+		protected override void TraitDisabled(Actor self)
+		{
+			wsb.CancelCustomAnimation(self);
+		}
+	}
+}