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/World/MissionData.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.Traits
+{
+	[Desc("Defines the FMVs that can be played by missions.")]
+	[TraitLocation(SystemActors.World)]
+	public class MissionDataInfo : TraitInfo<MissionData>
+	{
+		[FluentReference(optional: true)]
+		[Desc("Briefing text displayed in the mission browser.")]
+		public readonly string Briefing;
+
+		[Desc("Played by the \"Background Info\" button in the mission browser.")]
+		public readonly string BackgroundVideo;
+
+		[Desc("Played by the \"Briefing\" button in the mission browser.")]
+		public readonly string BriefingVideo;
+
+		[Desc("Automatically played before starting the mission.")]
+		public readonly string StartVideo;
+
+		[Desc("Automatically played when the player wins the mission.")]
+		public readonly string WinVideo;
+
+		[Desc("Automatically played when the player loses the mission.")]
+		public readonly string LossVideo;
+	}
+
+	public class MissionData { }
+}