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/ShroudExts.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 OpenRA.Traits;
+
+namespace OpenRA.Mods.Common
+{
+	public static class ShroudExts
+	{
+		public static bool AnyExplored(this Shroud shroud, (CPos Cell, SubCell SubCell)[] cells)
+		{
+			// PERF: Avoid LINQ.
+			foreach (var cell in cells)
+				if (shroud.IsExplored(cell.Cell))
+					return true;
+
+			return false;
+		}
+
+		public static bool AnyExplored(this Shroud shroud, PPos[] puvs)
+		{
+			// PERF: Avoid LINQ.
+			foreach (var puv in puvs)
+				if (shroud.IsExplored(puv))
+					return true;
+
+			return false;
+		}
+
+		public static bool AnyVisible(this Shroud shroud, (CPos Cell, SubCell SubCell)[] cells)
+		{
+			// PERF: Avoid LINQ.
+			foreach (var cell in cells)
+				if (shroud.IsVisible(cell.Cell))
+					return true;
+
+			return false;
+		}
+	}
+}