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.Game/GameRules/MusicInfo.cs

@@ -0,0 +1,65 @@
+#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.FileSystem;
+
+namespace OpenRA.GameRules
+{
+	public class MusicInfo
+	{
+		public readonly string Filename;
+		public readonly string Title;
+		public readonly bool Hidden;
+		public readonly float VolumeModifier = 1f;
+
+		public int Length { get; private set; } // seconds
+		public bool Exists { get; private set; }
+
+		public MusicInfo(string key, MiniYaml value)
+		{
+			Title = value.Value;
+
+			var nd = value.ToDictionary();
+			if (nd.TryGetValue("Hidden", out var yaml))
+				bool.TryParse(yaml.Value, out Hidden);
+
+			if (nd.TryGetValue("VolumeModifier", out yaml))
+				VolumeModifier = FieldLoader.GetValue<float>("VolumeModifier", yaml.Value);
+
+			var ext = nd.TryGetValue("Extension", out yaml) ? yaml.Value : "aud";
+			Filename = (nd.TryGetValue("Filename", out yaml) ? yaml.Value : key) + "." + ext;
+		}
+
+		public void Load(IReadOnlyFileSystem fileSystem)
+		{
+			if (!fileSystem.TryOpen(Filename, out var stream))
+				return;
+
+			try
+			{
+				Exists = true;
+				foreach (var loader in Game.ModData.SoundLoaders)
+				{
+					if (loader.TryParseSound(stream, out var soundFormat))
+					{
+						Length = (int)soundFormat.LengthInSeconds;
+						soundFormat.Dispose();
+						break;
+					}
+				}
+			}
+			finally
+			{
+				stream.Dispose();
+			}
+		}
+	}
+}