Use new IAutoRenderSize for determining actor render bounds

OpenRA.Mods.Common/Traits/Render/CustomRenderSize.cs

@@ -0,0 +1,35 @@
+#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 OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Special case trait for actors that need to define targetable area and screen map bounds manually.")]
+	public class CustomRenderSizeInfo : ITraitInfo, IAutoRenderSizeInfo
+	{
+		[FieldLoader.Require]
+		public readonly int[] CustomBounds = null;
+
+		public object Create(ActorInitializer init) { return new CustomRenderSize(this); }
+	}
+
+	public class CustomRenderSize : IAutoRenderSize
+	{
+		readonly CustomRenderSizeInfo info;
+		public CustomRenderSize(CustomRenderSizeInfo info) { this.info = info; }
+
+		public int2 RenderSize(Actor self)
+		{
+			return new int2(info.CustomBounds[0], info.CustomBounds[1]);
+		}
+	}
+}