Add a lighter-weight SpriteWidget to eventually replace ShpWidget.

OpenRA.Game/OpenRA.Game.csproj

@@ -232,6 +232,7 @@
     <Compile Include="Effects\MoveFlash.cs" />
     <Compile Include="MapCache.cs" />
     <Compile Include="MapPreview.cs" />
+    <Compile Include="Widgets\SpriteWidget.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\OpenRA.FileFormats\OpenRA.FileFormats.csproj">

OpenRA.Game/Widgets/SpriteWidget.cs

@@ -0,0 +1,72 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 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 System;
+using OpenRA.Graphics;
+
+namespace OpenRA.Widgets
+{
+	public class SpriteWidget : Widget
+	{
+		public string Palette = "chrome";
+		public Func<string> GetPalette;
+		public Func<Sprite> GetSprite;
+
+		readonly WorldRenderer worldRenderer;
+
+		[ObjectCreator.UseCtor]
+		public SpriteWidget(WorldRenderer worldRenderer)
+		{
+			GetPalette = () => { return Palette; };
+
+			this.worldRenderer = worldRenderer;
+		}
+
+		protected SpriteWidget(SpriteWidget other)
+			: base(other)
+		{
+			Palette = other.Palette;
+			GetPalette = other.GetPalette;
+			GetSprite = other.GetSprite;
+
+			worldRenderer = other.worldRenderer;
+		}
+
+		public override Widget Clone() { return new SpriteWidget(this); }
+
+		Sprite cachedSprite = null;
+		string cachedPalette = null;
+		PaletteReference pr;
+		float2 offset = float2.Zero;
+
+		public override void Draw()
+		{
+			var sprite = GetSprite();
+			var palette = GetPalette();
+
+			if (sprite == null || palette == null)
+				return;
+
+			if (sprite != cachedSprite)
+			{
+				offset = 0.5f * (new float2(RenderBounds.Size) - sprite.size);
+				cachedSprite = sprite;
+			}
+
+			if (palette != cachedPalette)
+			{
+				pr = worldRenderer.Palette(palette);
+				cachedPalette = palette;
+			}
+
+			Game.Renderer.SpriteRenderer.DrawSprite(sprite, RenderOrigin + offset, pr);
+		}
+	}
+}