diff --git a/OpenRa.FileFormats/OpenRa.FileFormats.csproj b/OpenRa.FileFormats/OpenRa.FileFormats.csproj
index f328bd7d6b..88233e0e8d 100644
--- a/OpenRa.FileFormats/OpenRa.FileFormats.csproj
+++ b/OpenRa.FileFormats/OpenRa.FileFormats.csproj
@@ -48,7 +48,6 @@
     <Compile Include="ShpReader.cs" />
     <Compile Include="Terrain.cs" />
     <Compile Include="TileSet.cs" />
-    <Compile Include="TileSheetBuilder.cs" />
     <Compile Include="Tuple.cs" />
   </ItemGroup>
   <ItemGroup>
diff --git a/OpenRa.FileFormats/TileSheetBuilder.cs b/OpenRa.FileFormats/TileSheetBuilder.cs
deleted file mode 100644
index f7f98a3d70..0000000000
--- a/OpenRa.FileFormats/TileSheetBuilder.cs
+++ /dev/null
@@ -1,106 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Drawing;
-
-namespace OpenRa.FileFormats
-{
-	public delegate T Provider<T>();
-
-	public class TileSheetBuilder<T>
-		where T : class
-	{
-		readonly Size pageSize;
-		readonly Provider<T> pageProvider;
-
-		public TileSheetBuilder(Size pageSize, Provider<T> pageProvider)
-		{
-			this.pageSize = pageSize;
-			this.pageProvider = pageProvider;
-		}
-
-		T current = null;
-		int x = 0, y = 0, rowHeight = 0;
-		TextureChannel? channel;
-
-		TextureChannel? NextChannel(TextureChannel? t)
-		{
-			if (t == null)
-				return TextureChannel.Red;
-
-			switch (t.Value)
-			{
-				case TextureChannel.Red: return TextureChannel.Green;
-				case TextureChannel.Green: return TextureChannel.Blue;
-				case TextureChannel.Blue: return TextureChannel.Alpha;
-				case TextureChannel.Alpha: return null;
-
-				default: return null;
-			}
-		}
-
-		public SheetRectangle<T> AddImage(Size imageSize)
-		{
-			if (imageSize.Width > pageSize.Width || imageSize.Height > pageSize.Height)
-				return null;
-
-			if (current == null)
-			{
-				current = pageProvider();
-				channel = NextChannel(null);
-			}
-
-			if (rowHeight == 0 || imageSize.Width + x > pageSize.Width)
-			{
-				y += rowHeight;
-				rowHeight = imageSize.Height;
-				x = 0;
-			}
-
-			if (imageSize.Height > rowHeight)
-				rowHeight = imageSize.Height;
-
-			if (y + imageSize.Height > pageSize.Height)
-			{
-				
-				if (null == (channel = NextChannel(channel)))
-				{
-					current = pageProvider();
-					channel = NextChannel(channel);
-				}
-
-				x = y = rowHeight = 0;
-			}
-
-			SheetRectangle<T> rect = new SheetRectangle<T>(current, new Point(x, y), imageSize, channel.Value);
-			x += imageSize.Width;
-
-			return rect;
-		}
-	}
-
-	public class SheetRectangle<T>
-		where T : class
-	{
-		public readonly Point origin;
-		public readonly Size size;
-		public readonly T sheet;
-		public readonly TextureChannel channel;
-
-		internal SheetRectangle(T sheet, Point origin, Size size, TextureChannel channel)
-		{
-			this.origin = origin;
-			this.size = size;
-			this.sheet = sheet;
-			this.channel = channel;
-		}
-	}
-
-	public enum TextureChannel
-	{
-		Red,
-		Green,
-		Blue,
-		Alpha,
-	}
-}
diff --git a/OpenRa.Game/Actor.cs b/OpenRa.Game/Actor.cs
index d6eff22170..a558fa6d13 100644
--- a/OpenRa.Game/Actor.cs
+++ b/OpenRa.Game/Actor.cs
@@ -12,6 +12,6 @@ namespace OpenRa.Game
 	{
 		public PointF location;
 		public int palette;
-		public abstract SheetRectangle<Sheet>[] CurrentImages { get; }
+		public abstract Sprite[] CurrentImages { get; }
 	}
 }
diff --git a/OpenRa.Game/CoreSheetBuilder.cs b/OpenRa.Game/CoreSheetBuilder.cs
deleted file mode 100644
index ad0ec61b75..0000000000
--- a/OpenRa.Game/CoreSheetBuilder.cs
+++ /dev/null
@@ -1,55 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Drawing;
-using BluntDirectX.Direct3D;
-using OpenRa.FileFormats;
-
-namespace OpenRa.Game
-{
-	static class CoreSheetBuilder
-	{
-		static TileSheetBuilder<Sheet> builder;
-		static Size pageSize = new Size(512,512);
-
-		public static void Initialize(GraphicsDevice device)
-		{
-			Provider<Sheet> sheetProvider = delegate { return new Sheet(pageSize, device); };
-			builder = new TileSheetBuilder<Sheet>(pageSize, sheetProvider);
-		}
-
-		public static SheetRectangle<Sheet> Add(byte[] src, Size size)
-		{
-			SheetRectangle<Sheet> rect = builder.AddImage(size);
-			Util.CopyIntoChannel(rect, src);
-			return rect;
-		}
-
-		public static SheetRectangle<Sheet> Add(Size size, byte paletteIndex)
-		{
-			byte[] data = new byte[size.Width * size.Height];
-			for (int i = 0; i < data.Length; i++)
-				data[i] = paletteIndex;
-
-			return Add(data, size);
-		}
-	}
-
-	static class SpriteSheetBuilder
-	{
-		static Dictionary<string, SheetRectangle<Sheet>> sprites = 
-			new Dictionary<string, SheetRectangle<Sheet>>();
-
-		public static SheetRectangle<Sheet> LoadSprite(Package package, string filename)
-		{
-			SheetRectangle<Sheet> value;
-			if (!sprites.TryGetValue(filename, out value))
-			{
-				ShpReader shp = new ShpReader(package.GetContent(filename));
-				sprites.Add(filename, value = CoreSheetBuilder.Add(shp[0].Image, shp.Size));
-			}
-
-			return value;
-		}
-	}
-}
diff --git a/OpenRa.Game/MainWindow.cs b/OpenRa.Game/MainWindow.cs
index a3f0cd7c54..0ccefb7f4d 100644
--- a/OpenRa.Game/MainWindow.cs
+++ b/OpenRa.Game/MainWindow.cs
@@ -38,7 +38,7 @@ namespace OpenRa.Game
 			renderer = new Renderer(this, GetResolution(settings), false);
 			Visible = true;
 
-			CoreSheetBuilder.Initialize(renderer.Device);
+			SheetBuilder.Initialize(renderer.Device);
 
 			map = new Map(new IniFile(File.OpenRead("../../../" + settings.GetValue("map", "scm12ea.ini"))));
 
diff --git a/OpenRa.Game/Mcv.cs b/OpenRa.Game/Mcv.cs
index d6a5926c0b..c5b6efaf60 100644
--- a/OpenRa.Game/Mcv.cs
+++ b/OpenRa.Game/Mcv.cs
@@ -20,18 +20,13 @@ namespace OpenRa.Game
 				mcvRange = UnitSheetBuilder.AddUnit("mcv");
 		}
 
-		int GetFacing()
-		{
-			int x = (Environment.TickCount >> 6) % 32;
-			return x;
-			//return x < 32 ? x : 63 - x;
-		}
+		int GetFacing() { return (Environment.TickCount >> 6) % 32; }
 
-		public override SheetRectangle<Sheet>[] CurrentImages
+		public override Sprite[] CurrentImages
 		{
 			get
 			{
-				return new SheetRectangle<Sheet>[] 
+				return new Sprite[] 
 				{ 
 					UnitSheetBuilder.sprites[GetFacing() + mcvRange.Value.Start]
 				};
diff --git a/OpenRa.Game/OpenRa.Game.csproj b/OpenRa.Game/OpenRa.Game.csproj
index 2f227234a0..a699d11977 100644
--- a/OpenRa.Game/OpenRa.Game.csproj
+++ b/OpenRa.Game/OpenRa.Game.csproj
@@ -42,7 +42,7 @@
   <ItemGroup>
     <Compile Include="Actor.cs" />
     <Compile Include="Clock.cs" />
-    <Compile Include="CoreSheetBuilder.cs" />
+    <Compile Include="SheetBuilder.cs" />
     <Compile Include="HardwarePalette.cs" />
     <Compile Include="MainWindow.cs">
       <SubType>Form</SubType>
@@ -55,7 +55,9 @@
     <Compile Include="Settings.cs" />
     <Compile Include="Sheet.cs" />
     <Compile Include="Sidebar.cs" />
+    <Compile Include="Sprite.cs" />
     <Compile Include="SpriteRenderer.cs" />
+    <Compile Include="SpriteSheetBuilder.cs" />
     <Compile Include="TerrainRenderer.cs" />
     <Compile Include="Tree.cs" />
     <Compile Include="TreeCache.cs" />
diff --git a/OpenRa.Game/Program.cs b/OpenRa.Game/Program.cs
index 7d7e0d04b4..78180cde20 100644
--- a/OpenRa.Game/Program.cs
+++ b/OpenRa.Game/Program.cs
@@ -21,8 +21,8 @@ namespace OpenRa.Game
 			}
 			catch( Exception e )
 			{
-				File.WriteAllText( "error.log", e.ToString() );
-				throw;
+			    File.WriteAllText( "error.log", e.ToString() );
+			    throw;
 			}
 		}
 	}
diff --git a/OpenRa.Game/Refinery.cs b/OpenRa.Game/Refinery.cs
index e043c7bd45..adc4d61009 100644
--- a/OpenRa.Game/Refinery.cs
+++ b/OpenRa.Game/Refinery.cs
@@ -20,16 +20,13 @@ namespace OpenRa.Game
 			this.palette = palette;
 		}
 
-		int GetFrame()
-		{
-			return 1;//
-		}
+		int GetFrame() { return 1; }
 
-		public override SheetRectangle<Sheet>[] CurrentImages
+		public override Sprite[] CurrentImages
 		{
 			get
 			{
-				return new SheetRectangle<Sheet>[] { UnitSheetBuilder.sprites[refineryRange.Value.Start + GetFrame()] };
+				return new Sprite[] { UnitSheetBuilder.sprites[refineryRange.Value.Start + GetFrame()] };
 			}
 		}
 	}
diff --git a/OpenRa.Game/Sheet.cs b/OpenRa.Game/Sheet.cs
index 53ec38346d..1200b6312e 100644
--- a/OpenRa.Game/Sheet.cs
+++ b/OpenRa.Game/Sheet.cs
@@ -15,13 +15,12 @@ namespace OpenRa.Game
 		readonly GraphicsDevice device;
 		Texture texture;
 
+		public Size Size { get { return bitmap.Size; } }
+
 		public Sheet(Size size, GraphicsDevice d)
 		{
 			bitmap = new Bitmap(size.Width, size.Height);
 			device = d;
-
-			//using (Graphics g = Graphics.FromImage(bitmap))
-			//    g.FillRectangle(Brushes.Fuchsia, 0, 0, size.Width, size.Height);
 		}
 
 		public Texture Texture
diff --git a/OpenRa.Game/SheetBuilder.cs b/OpenRa.Game/SheetBuilder.cs
new file mode 100644
index 0000000000..a772527b11
--- /dev/null
+++ b/OpenRa.Game/SheetBuilder.cs
@@ -0,0 +1,92 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Drawing;
+using BluntDirectX.Direct3D;
+using OpenRa.FileFormats;
+
+namespace OpenRa.Game
+{
+	delegate T Provider<T>();
+
+	static class SheetBuilder
+	{
+		public static void Initialize(GraphicsDevice device)
+		{
+			pageProvider = delegate { return new Sheet(new Size(512,512), device); };
+		}
+
+		public static Sprite Add(byte[] src, Size size)
+		{
+			Sprite rect = AddImage(size);
+			Util.CopyIntoChannel(rect, src);
+			return rect;
+		}
+
+		public static Sprite Add(Size size, byte paletteIndex)
+		{
+			byte[] data = new byte[size.Width * size.Height];
+			for (int i = 0; i < data.Length; i++)
+				data[i] = paletteIndex;
+
+			return Add(data, size);
+		}
+
+		static Provider<Sheet> pageProvider;
+		static Sheet current = null;
+		static int x = 0, y = 0, rowHeight = 0;
+		static TextureChannel? channel = null;
+
+		static TextureChannel? NextChannel(TextureChannel? t)
+		{
+			if (t == null)
+				return TextureChannel.Red;
+
+			switch (t.Value)
+			{
+				case TextureChannel.Red: return TextureChannel.Green;
+				case TextureChannel.Green: return TextureChannel.Blue;
+				case TextureChannel.Blue: return TextureChannel.Alpha;
+				case TextureChannel.Alpha: return null;
+
+				default: return null;
+			}
+		}
+
+		static Sprite AddImage(Size imageSize)
+		{
+			if (current == null)
+			{
+				current = pageProvider();
+				channel = NextChannel(null);
+			}
+
+			if (rowHeight == 0 || imageSize.Width + x > current.Size.Width)
+			{
+				y += rowHeight;
+				rowHeight = imageSize.Height;
+				x = 0;
+			}
+
+			if (imageSize.Height > rowHeight)
+				rowHeight = imageSize.Height;
+
+			if (y + imageSize.Height > current.Size.Height)
+			{
+
+				if (null == (channel = NextChannel(channel)))
+				{
+					current = pageProvider();
+					channel = NextChannel(channel);
+				}
+
+				x = y = rowHeight = 0;
+			}
+
+			Sprite rect = new Sprite(current, new Point(x, y), imageSize, channel.Value);
+			x += imageSize.Width;
+
+			return rect;
+		}
+	}
+}
diff --git a/OpenRa.Game/Sidebar.cs b/OpenRa.Game/Sidebar.cs
index 9624010536..7d587fb506 100644
--- a/OpenRa.Game/Sidebar.cs
+++ b/OpenRa.Game/Sidebar.cs
@@ -10,7 +10,6 @@ using System.IO;
 
 namespace OpenRa.Game
 {
-	using Sprite = SheetRectangle<Sheet>;
 	class Sidebar
 	{
 		TechTree.TechTree techTree = new TechTree.TechTree();
@@ -37,7 +36,7 @@ namespace OpenRa.Game
 			LoadSprites("../../../buildings.txt");
 			LoadSprites("../../../units.txt");
 
-			sprites.Add("BLANK", CoreSheetBuilder.Add(new Size(64, 48), 16));
+			sprites.Add("BLANK", SheetBuilder.Add(new Size(64, 48), 16));
 			techTree.CurrentRace = race;
 		}
 
diff --git a/OpenRa.Game/Sprite.cs b/OpenRa.Game/Sprite.cs
new file mode 100644
index 0000000000..cb277d3aa7
--- /dev/null
+++ b/OpenRa.Game/Sprite.cs
@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Drawing;
+
+namespace OpenRa.Game
+{
+	class Sprite
+	{
+		public readonly Point origin;
+		public readonly Size size;
+		public readonly Sheet sheet;
+		public readonly TextureChannel channel;
+
+		internal Sprite(Sheet sheet, Point origin, Size size, TextureChannel channel)
+		{
+			this.origin = origin;
+			this.size = size;
+			this.sheet = sheet;
+			this.channel = channel;
+		}
+	}
+
+	public enum TextureChannel
+	{
+		Red,
+		Green,
+		Blue,
+		Alpha,
+	}
+}
diff --git a/OpenRa.Game/SpriteRenderer.cs b/OpenRa.Game/SpriteRenderer.cs
index d524462258..f3b7b36b02 100644
--- a/OpenRa.Game/SpriteRenderer.cs
+++ b/OpenRa.Game/SpriteRenderer.cs
@@ -49,7 +49,7 @@ namespace OpenRa.Game
 			}
 		}
 
-		public void DrawSprite(SheetRectangle<Sheet> s, PointF location)
+		public void DrawSprite(Sprite s, PointF location)
 		{
 			if (s.sheet != currentSheet)
 				Flush();
diff --git a/OpenRa.Game/SpriteSheetBuilder.cs b/OpenRa.Game/SpriteSheetBuilder.cs
new file mode 100644
index 0000000000..bffb3c1511
--- /dev/null
+++ b/OpenRa.Game/SpriteSheetBuilder.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using OpenRa.FileFormats;
+
+namespace OpenRa.Game
+{
+	static class SpriteSheetBuilder
+	{
+		static Dictionary<string, Sprite> sprites =
+			new Dictionary<string, Sprite>();
+
+		public static Sprite LoadSprite(Package package, string filename)
+		{
+			Sprite value;
+			if (!sprites.TryGetValue(filename, out value))
+			{
+				ShpReader shp = new ShpReader(package.GetContent(filename));
+				sprites.Add(filename, value = SheetBuilder.Add(shp[0].Image, shp.Size));
+			}
+
+			return value;
+		}
+	}
+}
diff --git a/OpenRa.Game/TerrainRenderer.cs b/OpenRa.Game/TerrainRenderer.cs
index 4322c1edb6..202fc25e34 100644
--- a/OpenRa.Game/TerrainRenderer.cs
+++ b/OpenRa.Game/TerrainRenderer.cs
@@ -25,8 +25,8 @@ namespace OpenRa.Game
 
 			tileSet = new TileSet(tilePackage, map.TileSuffix);
 
-			Dictionary<TileReference, SheetRectangle<Sheet>> tileMapping =
-				new Dictionary<TileReference, SheetRectangle<Sheet>>();
+			Dictionary<TileReference, Sprite> tileMapping =
+				new Dictionary<TileReference, Sprite>();
 
 			Size tileSize = new Size(24, 24);
 
@@ -37,10 +37,10 @@ namespace OpenRa.Game
 				for (int i = 0; i < map.Width; i++)
 				{
 					TileReference tileRef = map.MapTiles[i + map.XOffset, j + map.YOffset];
-					SheetRectangle<Sheet> tile;
+					Sprite tile;
 
 					if (!tileMapping.TryGetValue(tileRef, out tile))
-						tileMapping.Add(tileRef, tile = CoreSheetBuilder.Add(tileSet.GetBytes(tileRef), tileSize));
+						tileMapping.Add(tileRef, tile = SheetBuilder.Add(tileSet.GetBytes(tileRef), tileSize));
 
 					terrainSheet = tile.sheet;
 
diff --git a/OpenRa.Game/Tree.cs b/OpenRa.Game/Tree.cs
index d6e7213334..94043dc99a 100644
--- a/OpenRa.Game/Tree.cs
+++ b/OpenRa.Game/Tree.cs
@@ -11,11 +11,11 @@ namespace OpenRa.Game
 		public Tree(TreeReference r, TreeCache renderer, Map map)
 		{
 			location = new PointF(24 * (r.X - map.XOffset), 24 * (r.Y - map.YOffset));
-			currentImages = new SheetRectangle<Sheet>[] { renderer.GetImage(r.Image) };
+			currentImages = new Sprite[] { renderer.GetImage(r.Image) };
 		}
 
-		SheetRectangle<Sheet>[] currentImages;
-		public override SheetRectangle<Sheet>[] CurrentImages
+		Sprite[] currentImages;
+		public override Sprite[] CurrentImages
 		{
 			get { return currentImages; }
 		}
diff --git a/OpenRa.Game/TreeCache.cs b/OpenRa.Game/TreeCache.cs
index c89892285c..ca8f3e6d30 100644
--- a/OpenRa.Game/TreeCache.cs
+++ b/OpenRa.Game/TreeCache.cs
@@ -9,7 +9,7 @@ namespace OpenRa.Game
 {
 	class TreeCache
 	{
-		Dictionary<string, SheetRectangle<Sheet>> trees = new Dictionary<string, SheetRectangle<Sheet>>();
+		Dictionary<string, Sprite> trees = new Dictionary<string, Sprite>();
 
 		public TreeCache(GraphicsDevice device, Map map, Package package)
 		{
@@ -21,10 +21,10 @@ namespace OpenRa.Game
 				string filename = r.Image + "." + map.Theater.Substring(0, 3);
 
 				ShpReader reader = new ShpReader(package.GetContent(filename));
-				trees.Add(r.Image, CoreSheetBuilder.Add(reader[0].Image, reader.Size));
+				trees.Add(r.Image, SheetBuilder.Add(reader[0].Image, reader.Size));
 			}
 		}
 
-		public SheetRectangle<Sheet> GetImage(string tree) { return trees[tree]; }
+		public Sprite GetImage(string tree) { return trees[tree]; }
 	}
 }
diff --git a/OpenRa.Game/UnitSheetBuilder.cs b/OpenRa.Game/UnitSheetBuilder.cs
index a1211c463c..e8c39d5319 100644
--- a/OpenRa.Game/UnitSheetBuilder.cs
+++ b/OpenRa.Game/UnitSheetBuilder.cs
@@ -12,7 +12,7 @@ namespace OpenRa.Game
 		static readonly Package unitsPackage = new Package( "../../../conquer.mix" );
 		static readonly Package otherUnitsPackage = new Package("../../../hires.mix");
 
-		public static readonly List<SheetRectangle<Sheet>> sprites = new List<SheetRectangle<Sheet>>();
+		public static readonly List<Sprite> sprites = new List<Sprite>();
 
 		static ShpReader Load(string filename)
 		{
@@ -28,7 +28,7 @@ namespace OpenRa.Game
 			int low = sprites.Count;
 			ShpReader reader = Load(name + ".shp");
 			foreach (ImageHeader h in reader)
-				sprites.Add(CoreSheetBuilder.Add(h.Image, reader.Size));
+				sprites.Add(SheetBuilder.Add(h.Image, reader.Size));
 
 			return new Range<int>(low, sprites.Count - 1);
 		}
diff --git a/OpenRa.Game/Util.cs b/OpenRa.Game/Util.cs
index 2696780c8f..405010e404 100644
--- a/OpenRa.Game/Util.cs
+++ b/OpenRa.Game/Util.cs
@@ -9,7 +9,7 @@ namespace OpenRa.Game
 {
 	static class Util
 	{
-		public static float U(SheetRectangle<Sheet> s, float u)
+		public static float U(Sprite s, float u)
 		{
 			float u0 = (float)(s.origin.X + 0.5f) / (float)s.sheet.bitmap.Width;
 			float u1 = (float)(s.origin.X + s.size.Width) / (float)s.sheet.bitmap.Width;
@@ -17,7 +17,7 @@ namespace OpenRa.Game
 			return (u > 0) ? u1 : u0;
 		}
 
-		public static float V(SheetRectangle<Sheet> s, float v)
+		public static float V(Sprite s, float v)
 		{
 			float v0 = (float)(s.origin.Y + 0.5f) / (float)s.sheet.bitmap.Height;
 			float v1 = (float)(s.origin.Y + s.size.Height) / (float)s.sheet.bitmap.Height;
@@ -48,7 +48,7 @@ namespace OpenRa.Game
 			return new PointF(paletteLine / 16.0f, channelEncoder(channel));
 		}
 
-		public static Vertex MakeVertex(PointF o, float u, float v, SheetRectangle<Sheet> r, int palette)
+		public static Vertex MakeVertex(PointF o, float u, float v, Sprite r, int palette)
 		{
 			float x2 = o.X + r.size.Width;
 			float y2 = o.Y + r.size.Height;
@@ -64,7 +64,7 @@ namespace OpenRa.Game
 			return (1 - t) * a + t * b;
 		}
 
-		public static void CreateQuad(List<Vertex> vertices, List<ushort> indices, PointF o, SheetRectangle<Sheet> r, int palette)
+		public static void CreateQuad(List<Vertex> vertices, List<ushort> indices, PointF o, Sprite r, int palette)
 		{
 			ushort offset = (ushort)vertices.Count;
 
@@ -82,7 +82,7 @@ namespace OpenRa.Game
 			indices.Add((ushort)(offset + 2));
 		}
 
-		public static void CopyIntoChannel(SheetRectangle<Sheet> dest, byte[] src)
+		public static void CopyIntoChannel(Sprite dest, byte[] src)
 		{
 			for (int i = 0; i < dest.size.Width; i++)
 				for (int j = 0; j < dest.size.Height; j++)
diff --git a/OpenRa.Game/World.cs b/OpenRa.Game/World.cs
index e2f70ef73f..361b969100 100644
--- a/OpenRa.Game/World.cs
+++ b/OpenRa.Game/World.cs
@@ -46,7 +46,7 @@ namespace OpenRa.Game
 
 			foreach (Actor a in actors)
 			{
-				SheetRectangle<Sheet>[] images = a.CurrentImages;
+				Sprite[] images = a.CurrentImages;
 
 				if (images == null)
 					continue;
@@ -57,7 +57,7 @@ namespace OpenRa.Game
 				if (a.location.Y > yr.End || a.location.Y < yr.Start - images[0].size.Height)
 					continue;
 
-				foreach (SheetRectangle<Sheet> image in images)
+				foreach (Sprite image in images)
 				{
 					if( image.sheet != sheet && sprites > 0 && sheet != null )
 					{