Added HitShapes

New IHitShape interface.
Added Circle, Capsule and Rectangle shapes.

OpenRA.Mods.Common/HitShapes/IHitShape.cs

@@ -0,0 +1,25 @@
+#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.Graphics;
+
+namespace OpenRA.Mods.Common.HitShapes
+{
+	public interface IHitShape
+	{
+		WDist OuterRadius { get; }
+
+		WDist DistanceFromEdge(WVec v);
+		WDist DistanceFromEdge(WPos pos, Actor actor);
+
+		void Initialize();
+		void DrawCombatOverlay(WorldRenderer wr, RgbaColorRenderer wcr, Actor actor);
+	}
+}