Move mission objectives and victory conditions to Mods.Common

OpenRA.Mods.Common/PlayerExtensions.cs

@@ -0,0 +1,23 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * 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. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System.Linq;
+using OpenRA.Mods.Common.Traits;
+
+namespace OpenRA.Mods.Common
+{
+	public static class PlayerExtensions
+	{
+		public static bool HasNoRequiredUnits(this Player player)
+		{
+			return player.World.ActorsWithTrait<MustBeDestroyed>().All(p => p.Actor.Owner != player);
+		}
+	}
+}