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/PaletteEffects/CloakPaletteEffect.cs

@@ -0,0 +1,53 @@
+#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.Generic;
+using OpenRA.Graphics;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[TraitLocation(SystemActors.World | SystemActors.EditorWorld)]
+	public class CloakPaletteEffectInfo : TraitInfo<CloakPaletteEffect> { }
+
+	public class CloakPaletteEffect : IPaletteModifier, ITick
+	{
+		float t = 0;
+		readonly string paletteName = "cloak";
+
+		readonly Color[] colors =
+		[
+			Color.FromArgb(55, 205, 205, 220),
+			Color.FromArgb(120, 205, 205, 230),
+			Color.FromArgb(192, 180, 180, 255),
+			Color.FromArgb(178, 205, 250, 220),
+		];
+
+		void IPaletteModifier.AdjustPalette(IReadOnlyDictionary<string, MutablePalette> b)
+		{
+			var i = (int)t;
+			var p = b[paletteName];
+
+			for (var j = 0; j < colors.Length; j++)
+			{
+				var k = (i + j) % 16 + 0xb0;
+				p.SetColor(k, colors[j]);
+			}
+		}
+
+		void ITick.Tick(Actor self)
+		{
+			t += 0.25f;
+			if (t >= 256) t = 0;
+		}
+	}
+}