Add AutoTargetPriority trait for smarter AutoTarget logic.

OpenRA.Mods.Common/Traits/AutoTargetPriority.cs

@@ -0,0 +1,37 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2017 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.Collections.Generic;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Specifies the target types and relative priority used by AutoTarget to decide what to target.")]
+	public class AutoTargetPriorityInfo : ConditionalTraitInfo, Requires<AutoTargetInfo>
+	{
+		[Desc("Target types that can be AutoTargeted.")]
+		public readonly HashSet<string> ValidTargets = new HashSet<string> { "Ground", "Water", "Air" };
+
+		[Desc("Target types that can't be AutoTargeted.", "Overrules ValidTargets.")]
+		public readonly HashSet<string> InvalidTargets = new HashSet<string>();
+
+		[Desc("ValidTargets with larger priorities will be AutoTargeted before lower priorities.")]
+		public readonly int Priority = 1;
+
+		public override object Create(ActorInitializer init) { return new AutoTargetPriority(this); }
+	}
+
+	public class AutoTargetPriority : ConditionalTrait<AutoTargetPriorityInfo>
+	{
+		public AutoTargetPriority(AutoTargetPriorityInfo info)
+			: base(info) { }
+	}
+}