Moves Upgrades and Invulnerable trait to Mods.Common

OpenRA.Mods.Common/Traits/Invulnerable.cs

@@ -0,0 +1,23 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2015 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 OpenRA.GameRules;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("This unit cannot be damaged.")]
+	class InvulnerableInfo : TraitInfo<Invulnerable> { }
+
+	class Invulnerable : IDamageModifier
+	{
+		public int GetDamageModifier(Actor attacker, DamageWarhead warhead) { return 0; }
+	}
+}