Convert DisableOnUpgrade to conditions.

OpenRA.Mods.Common/Traits/Upgrades/DisableOnCondition.cs

@@ -0,0 +1,29 @@
+#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 OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Disable the actor when this trait is enabled by an upgrade.")]
+	public class DisableOnConditionInfo : UpgradableTraitInfo
+	{
+		public override object Create(ActorInitializer init) { return new DisableOnCondition(this); }
+	}
+
+	public class DisableOnCondition : UpgradableTrait<DisableOnConditionInfo>, IDisable
+	{
+		public DisableOnCondition(DisableOnConditionInfo info)
+			: base(info) { }
+
+		public bool Disabled { get { return !IsTraitDisabled; } }
+	}
+}