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/PowerTooltip.cs

@@ -0,0 +1,48 @@
+#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.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Shown power info on the build palette widget.")]
+	public class PowerTooltipInfo : TraitInfo
+	{
+		public override object Create(ActorInitializer init) { return new PowerTooltip(init.Self); }
+	}
+
+	public class PowerTooltip : IProvideTooltipInfo, INotifyOwnerChanged
+	{
+		readonly Actor self;
+		PowerManager powerManager;
+		DeveloperMode developerMode;
+
+		public PowerTooltip(Actor self)
+		{
+			this.self = self;
+			powerManager = self.Owner.PlayerActor.Trait<PowerManager>();
+			developerMode = self.Owner.PlayerActor.Trait<DeveloperMode>();
+		}
+
+		public bool IsTooltipVisible(Player forPlayer)
+		{
+			return forPlayer == self.Owner;
+		}
+
+		public string TooltipText => $"Power Usage: {powerManager.PowerDrained}{(developerMode.UnlimitedPower ? "" : "/" + powerManager.PowerProvided)}";
+
+		public void OnOwnerChanged(Actor self, Player oldOwner, Player newOwner)
+		{
+			powerManager = newOwner.PlayerActor.Trait<PowerManager>();
+			developerMode = newOwner.PlayerActor.Trait<DeveloperMode>();
+		}
+	}
+}