Support for Dune II SHP files used for cursors in Red Alert.

OpenRa.Game/Graphics/CursorSheetBuilder.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using OpenRa.FileFormats;
+
+namespace OpenRa.Game.Graphics
+{
+	static class CursorSheetBuilder
+	{
+		static Dictionary<string, Sprite[]> cursors =
+			new Dictionary<string, Sprite[]>();
+
+		public static Sprite LoadSprite(string filename, params string[] exts)
+		{
+			return LoadAllSprites(filename, exts)[0];
+		}
+
+		public static Sprite[] LoadAllSprites(string filename, params string[] exts)
+		{
+			Sprite[] value;
+			if (!cursors.TryGetValue(filename, out value))
+			{
+				Dune2ShpReader shp = new Dune2ShpReader(FileSystem.OpenWithExts(filename, exts));
+				value = new Sprite[shp.ImageCount];
+				for (int i = 0; i < shp.ImageCount; i++)
+					value[i] = SheetBuilder.Add(shp[i].Image, shp[i].Size);
+				cursors.Add(filename, value);
+			}
+
+			return value;
+		}
+	}
+}