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/Power/Power.cs

@@ -0,0 +1,57 @@
+#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.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	public class PowerInfo : ConditionalTraitInfo
+	{
+		[Desc("If negative, it will drain power. If positive, it will provide power.")]
+		public readonly int Amount = 0;
+
+		public override object Create(ActorInitializer init) { return new Power(init.Self, this); }
+	}
+
+	public class Power : ConditionalTrait<PowerInfo>, INotifyAddedToWorld, INotifyRemovedFromWorld, INotifyOwnerChanged
+	{
+		readonly Lazy<IPowerModifier[]> powerModifiers;
+
+		public PowerManager PlayerPower { get; private set; }
+
+		public int GetEnabledPower()
+		{
+			return Util.ApplyPercentageModifiers(Info.Amount, powerModifiers.Value.Select(m => m.GetPowerModifier()));
+		}
+
+		public Power(Actor self, PowerInfo info)
+			: base(info)
+		{
+			PlayerPower = self.Owner.PlayerActor.Trait<PowerManager>();
+			powerModifiers = Exts.Lazy(() => self.TraitsImplementing<IPowerModifier>().ToArray());
+		}
+
+		protected override void TraitEnabled(Actor self) { PlayerPower.UpdateActor(self); }
+		protected override void TraitDisabled(Actor self) { PlayerPower.UpdateActor(self); }
+
+		void INotifyAddedToWorld.AddedToWorld(Actor self) { PlayerPower.UpdateActor(self); }
+		void INotifyRemovedFromWorld.RemovedFromWorld(Actor self) { PlayerPower.RemoveActor(self); }
+
+		void INotifyOwnerChanged.OnOwnerChanged(Actor self, Player oldOwner, Player newOwner)
+		{
+			PlayerPower.RemoveActor(self);
+			PlayerPower = newOwner.PlayerActor.Trait<PowerManager>();
+			PlayerPower.UpdateActor(self);
+		}
+	}
+}