Merge pull request #3684 from pchote/tileset-fixup

TileSet Refactoring

OpenRA.FileFormats/Graphics/TileSetRenderer.cs

@@ -0,0 +1,97 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2013 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.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+
+namespace OpenRA.FileFormats
+{
+	public class TileSetRenderer
+	{
+		public TileSet TileSet;
+		Dictionary<ushort, List<byte[]>> templates;
+		public Size TileSize;
+
+		List<byte[]> LoadTemplate(string filename, string[] exts, Cache<string, R8Reader> r8Cache, int[] frames)
+		{
+			if (exts.Contains(".R8") && FileSystem.Exists(filename+".R8"))
+			{
+				var data = new List<byte[]>();
+
+				foreach (var f in frames)
+					data.Add(f >= 0 ? r8Cache[filename][f].Image : null);
+
+				return data;
+			}
+
+			using (var s = FileSystem.OpenWithExts(filename, exts))
+				return new Terrain(s).TileBitmapBytes;
+		}
+
+		public TileSetRenderer(TileSet tileset, Size tileSize)
+		{
+			this.TileSet = tileset;
+			this.TileSize = tileSize;
+
+			templates = new Dictionary<ushort, List<byte[]>>();
+			var r8Cache = new Cache<string, R8Reader>(s => new R8Reader(FileSystem.OpenWithExts(s, ".R8")));
+			foreach (var t in TileSet.Templates)
+				templates.Add(t.Key, LoadTemplate(t.Value.Image, tileset.Extensions, r8Cache, t.Value.Frames));
+		}
+
+		public Bitmap RenderTemplate(ushort id, Palette p)
+		{
+			var template = TileSet.Templates[id];
+			var templateData = templates[id];
+
+			var bitmap = new Bitmap(TileSize.Width * template.Size.X, TileSize.Height * template.Size.Y,
+				PixelFormat.Format8bppIndexed);
+
+			bitmap.Palette = p.AsSystemPalette();
+
+			var data = bitmap.LockBits(bitmap.Bounds(),
+				ImageLockMode.WriteOnly, PixelFormat.Format8bppIndexed);
+
+			unsafe
+			{
+				var q = (byte*)data.Scan0.ToPointer();
+				var stride = data.Stride;
+
+				for (var u = 0; u < template.Size.X; u++)
+					for (var v = 0; v < template.Size.Y; v++)
+						if (templateData[u + v * template.Size.X] != null)
+						{
+							var rawImage = templateData[u + v * template.Size.X];
+							for (var i = 0; i < TileSize.Width; i++)
+								for (var j = 0; j < TileSize.Height; j++)
+									q[(v * TileSize.Width + j) * stride + u * TileSize.Width + i] = rawImage[i + TileSize.Width * j];
+						}
+						else
+						{
+							for (var i = 0; i < TileSize.Width; i++)
+								for (var j = 0; j < TileSize.Height; j++)
+									q[(v * TileSize.Width + j) * stride + u * TileSize.Width + i] = 0;
+						}
+			}
+
+			bitmap.UnlockBits(data);
+			return bitmap;
+		}
+
+		public List<byte[]> Data(ushort id)
+		{
+			return templates[id];
+		}
+	}
+}