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/FileFormats/RLEZerosCompression.cs

@@ -0,0 +1,37 @@
+#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;
+
+namespace OpenRA.Mods.Common.FileFormats
+{
+	// Run length encoded sequences of zeros (aka Format2)
+	public static class RLEZerosCompression
+	{
+		public static void DecodeInto(byte[] src, byte[] dest, int destIndex)
+		{
+			var r = new FastByteReader(src);
+
+			while (!r.Done())
+			{
+				var cmd = r.ReadByte();
+				if (cmd == 0)
+				{
+					var count = r.ReadByte();
+					Array.Clear(dest, destIndex, count);
+					destIndex += count;
+				}
+				else
+					dest[destIndex++] = cmd;
+			}
+		}
+	}
+}