Kill Unit trait; Radar signature tweaks

OpenRA.Mods.RA/AppearsOnRadar.cs

@@ -0,0 +1,39 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2010 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 LICENSE.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA
+{
+	public class AppearsOnRadarInfo : TraitInfo<AppearsOnRadar> {}
+	public class AppearsOnRadar : IRadarSignature
+	{		
+		IOccupySpace Space;
+
+		public IEnumerable<int2> RadarSignatureCells(Actor self)
+		{
+			if (Space == null)
+				Space = self.traits.Get<IOccupySpace>();
+			return Space.OccupiedCells();
+		}
+		
+		public Color RadarSignatureColor(Actor self)
+		{
+			var mod = self.traits.WithInterface<IRadarColorModifier>().FirstOrDefault();
+			if (mod != null)
+				return mod.RadarColorOverride(self);
+			
+			return self.Owner.Color;
+		}
+	}
+}