Add a PlayerExperience trait

OpenRA.Mods.Common/Traits/Player/PlayerExperience.cs

@@ -0,0 +1,35 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 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, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("This trait can be used to track player experience based on units killed with the `GivesExperience` trait.",
+		"It can also be used as a point score system in scripted maps, for example.",
+		"Attach this to the player actor.")]
+	public class PlayerExperienceInfo : ITraitInfo
+	{
+		public object Create(ActorInitializer init) { return new PlayerExperience(); }
+	}
+
+	public class PlayerExperience : ISync
+	{
+		[Sync] public int Experience { get; private set; }
+
+		public void GiveExperience(int num)
+		{
+			Experience += num;
+		}
+	}
+}