417 lines
16 KiB
C#
417 lines
16 KiB
C#
using System.Drawing;
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using System.Drawing.Imaging;
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using System.Text;
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using System.Text.Json;
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namespace AssetExtractor;
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/// <summary>
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/// One-time migration tool: pulls sprites out of the Delphi DFM, converts .omap files
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/// (TLZRW1 "LZH!" compressed text) to JSON, extracts tileset images from .oil files,
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/// and copies the sound/music files into the MonoGame Content folder.
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/// </summary>
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public static class Program
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{
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static string _srcDir = @"C:\Projects\Games\Delphi\Omega Games\Freedom Fighter";
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static string _outDir = @"C:\Projects\Games\Visual Studio\FreedomFighter\FreedomFighter\Content";
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static readonly string[] Maps = ["intro.omap", "test10.omap", "test7.omap", "test8.omap", "bonus.omap", "lvl5.omap"];
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public static void Main(string[] args)
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{
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if (args.Length > 0) _srcDir = args[0];
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if (args.Length > 1) _outDir = args[1];
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foreach (var sub in new[] { "gfx", "maps", "tilesets", "sfx", "music" })
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Directory.CreateDirectory(Path.Combine(_outDir, sub));
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var oilsNeeded = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
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ExtractDfmImages(Path.Combine(_srcDir, "GameU.dfm"));
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foreach (var map in Maps)
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{
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var oil = ConvertMap(Path.Combine(_srcDir, map));
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if (oil != null) oilsNeeded.Add(oil);
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}
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foreach (var oil in oilsNeeded)
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ExtractOilTileset(Path.Combine(_srcDir, oil));
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CopyAudio();
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Console.WriteLine("Done.");
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}
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// ---------------------------------------------------------------- DFM images
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record ImageItem(int Index, string Name, string File, int TileWidth, int TileHeight);
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static void ExtractDfmImages(string dfmPath)
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{
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var lines = File.ReadAllLines(dfmPath);
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var manifest = new Dictionary<string, List<ImageItem>>();
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string? currentList = null;
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string itemName = "";
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int tileW = 0, tileH = 0;
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bool transparent = false;
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string transparentColor = "clBlack";
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StringBuilder? hex = null;
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byte[]? pictureData = null;
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int itemIndex = 0;
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void FlushItem()
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{
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if (currentList == null || pictureData == null) return;
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string safeName = itemName.Length > 0 ? itemName : "unnamed";
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string file = $"{currentList.ToLowerInvariant()}_{itemIndex:D2}_{safeName}.png";
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SaveGraphic(pictureData, Path.Combine(_outDir, "gfx", file),
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transparent ? ParseDelphiColor(transparentColor) : null);
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manifest.TryAdd(currentList, []);
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// TileWidth/TileHeight of 0 means "whole image is one frame"
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manifest[currentList].Add(new ImageItem(itemIndex, itemName, file, tileW, tileH));
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Console.WriteLine($" {currentList}[{itemIndex}] '{itemName}' -> {file} ({tileW}x{tileH})");
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itemIndex++;
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pictureData = null;
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itemName = "";
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tileW = tileH = 0;
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transparent = false;
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transparentColor = "clBlack";
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}
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foreach (var raw in lines)
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{
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var line = raw.Trim();
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if (hex != null)
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{
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bool end = line.EndsWith('}');
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hex.Append(end ? line[..^1] : line);
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if (end)
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{
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pictureData = Convert.FromHexString(hex.ToString());
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hex = null;
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}
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continue;
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}
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if (line.StartsWith("object ") && line.Contains(": TOmegaImageList"))
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{
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FlushItem();
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currentList = line["object ".Length..line.IndexOf(':')].Trim();
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itemIndex = 0;
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continue;
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}
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if (currentList == null) continue;
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if (line.StartsWith("object ")) // next non-imagelist component
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{
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FlushItem();
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currentList = null;
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continue;
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}
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if (line == "item")
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FlushItem();
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else if (line.StartsWith("Name = '"))
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itemName = line["Name = '".Length..^1];
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else if (line.StartsWith("TileWidth = "))
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tileW = int.Parse(line["TileWidth = ".Length..]);
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else if (line.StartsWith("TileHeight = "))
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tileH = int.Parse(line["TileHeight = ".Length..]);
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else if (line.StartsWith("TransparentColor = "))
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transparentColor = line["TransparentColor = ".Length..];
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else if (line == "Transparent = True")
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transparent = true;
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else if (line.StartsWith("Picture.Data = {"))
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hex = new StringBuilder(line["Picture.Data = {".Length..]);
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}
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FlushItem();
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var json = JsonSerializer.Serialize(manifest, new JsonSerializerOptions { WriteIndented = true });
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File.WriteAllText(Path.Combine(_outDir, "gfx", "manifest.json"), json);
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Console.WriteLine(" wrote gfx/manifest.json");
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}
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/// <summary>Delphi TColor: 0x00BBGGRR integer or a clXxx name.</summary>
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static Color ParseDelphiColor(string value)
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{
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switch (value)
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{
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case "clBlack": return Color.FromArgb(0, 0, 0);
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case "clWhite": return Color.FromArgb(255, 255, 255);
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case "clRed": return Color.FromArgb(255, 0, 0);
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case "clLime": return Color.FromArgb(0, 255, 0);
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case "clBlue": return Color.FromArgb(0, 0, 255);
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case "clNavy": return Color.FromArgb(0, 0, 128);
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case "clFuchsia": return Color.FromArgb(255, 0, 255);
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case "clYellow": return Color.FromArgb(255, 255, 0);
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case "clAqua": return Color.FromArgb(0, 255, 255);
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}
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int v = int.Parse(value);
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return Color.FromArgb(v & 0xFF, (v >> 8) & 0xFF, (v >> 16) & 0xFF);
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}
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/// <summary>Delphi TPicture blob: [1B class-name length][class name][payload].</summary>
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static void SaveGraphic(byte[] data, string outPath, Color? colorKey)
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{
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int nameLen = data[0];
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string cls = Encoding.ASCII.GetString(data, 1, nameLen);
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int payloadStart = 1 + nameLen;
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if (cls == "TPNGObject")
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{
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// PNGs keep their native alpha (Omega honored it); key applies on top if set
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byte[] png = data[payloadStart..];
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if (colorKey != null)
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SaveWithColorKey(png, outPath, colorKey.Value);
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else
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File.WriteAllBytes(outPath, png);
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}
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else if (cls == "TBitmap")
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{
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// payload: [4B length][BMP bytes]; key only when the item was marked Transparent
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int len = BitConverter.ToInt32(data, payloadStart);
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var bmpBytes = new ReadOnlySpan<byte>(data, payloadStart + 4, len).ToArray();
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using var ms = new MemoryStream(bmpBytes);
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using var src = new Bitmap(ms);
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SaveKeyed(src, outPath, colorKey);
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}
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else
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{
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throw new InvalidDataException($"Unknown graphic class '{cls}'");
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}
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}
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/// <summary>Re-encode as PNG with the given color made fully transparent (Omega's Transparent=True).</summary>
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static void SaveWithColorKey(byte[] imageBytes, string outPath, Color key)
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{
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using var ms = new MemoryStream(imageBytes);
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using var src = new Bitmap(ms);
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SaveKeyed(src, outPath, key);
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}
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static void SaveKeyed(Bitmap src, string outPath, Color? key)
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{
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using var dst = new Bitmap(src.Width, src.Height, PixelFormat.Format32bppArgb);
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for (int y = 0; y < src.Height; y++)
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for (int x = 0; x < src.Width; x++)
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{
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var c = src.GetPixel(x, y);
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bool keyed = key != null && c.A > 0 && c.R == key.Value.R && c.G == key.Value.G && c.B == key.Value.B;
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dst.SetPixel(x, y, keyed ? Color.Transparent : c);
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}
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dst.Save(outPath, ImageFormat.Png);
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}
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/// <summary>Convert BMP to PNG, keying out the bottom-left pixel color (Delphi Transparent convention).</summary>
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static void SaveBmpAsKeyedPng(byte[] bmpBytes, string outPath)
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{
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using var ms = new MemoryStream(bmpBytes);
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using var src = new Bitmap(ms);
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using var dst = new Bitmap(src.Width, src.Height, PixelFormat.Format32bppArgb);
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var key = src.GetPixel(0, src.Height - 1);
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for (int y = 0; y < src.Height; y++)
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for (int x = 0; x < src.Width; x++)
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{
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var c = src.GetPixel(x, y);
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dst.SetPixel(x, y, c.R == key.R && c.G == key.G && c.B == key.B ? Color.Transparent : c);
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}
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dst.Save(outPath, ImageFormat.Png);
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}
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// ---------------------------------------------------------------- maps
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static string? ConvertMap(string mapPath)
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{
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if (!File.Exists(mapPath))
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{
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Console.WriteLine($" MISSING map {mapPath}");
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return null;
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}
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var text = Encoding.Latin1.GetString(Lzh.Decompress(File.ReadAllBytes(mapPath)));
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var lines = text.Split("\r\n");
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int p = 0;
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string Next() => lines[p++];
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int NextInt() => int.Parse(Next());
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int w = NextInt();
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int h = NextInt();
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string oil = Next();
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int tileW = NextInt();
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int tileH = NextInt();
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// Layer1: 17 lines per tile; keep only the pattern index (game uses nothing else)
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var layer1 = new int[w][];
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for (int a = 0; a < w; a++)
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{
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layer1[a] = new int[h];
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for (int b = 0; b < h; b++)
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{
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p += 8; // x,y,r,g,b,alpha,rotation,image.index
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layer1[a][b] = NextInt(); // imageindex (pattern)
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p += 8; // animcount..animlooped
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}
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}
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p += w * h * 18; // Layer2 (has extra DoCollision line)
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p += w * h * 17; // Layer3
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var triggers = new List<object>();
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for (int a = 0; a < w; a++)
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for (int b = 0; b < h; b++)
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{
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string name = Next();
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string action = Next();
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string e1 = Next(), e2 = Next(), e3 = Next();
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if (action.Length > 0)
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triggers.Add(new { x = a, y = b, name, action, extra1 = e1, extra2 = e2, extra3 = e3 });
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}
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var mapObj = new
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{
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widthCount = w,
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heightCount = h,
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oil = Path.GetFileName(oil),
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tileWidth = tileW,
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tileHeight = tileH,
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layer1,
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triggers
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};
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string outFile = Path.Combine(_outDir, "maps", Path.GetFileNameWithoutExtension(mapPath) + ".json");
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File.WriteAllText(outFile, JsonSerializer.Serialize(mapObj));
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Console.WriteLine($" {Path.GetFileName(mapPath)}: {w}x{h}, oil='{oil}', {triggers.Count} triggers -> {Path.GetFileName(outFile)}");
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return oil;
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}
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// ---------------------------------------------------------------- OIL tilesets
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static readonly byte[] PngSig = [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A];
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/// <summary>
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/// .oil = binary Delphi component stream. Rather than fully parsing TPF0 we scan for
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/// embedded graphics: "TPNGObject"+PNG or "TBitmap"+[len]+BMP. Item order is preserved;
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/// the game's maps only use item 0 (the tileset).
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/// </summary>
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static void ExtractOilTileset(string oilPath)
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{
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if (!File.Exists(oilPath))
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{
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Console.WriteLine($" MISSING oil {oilPath}");
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return;
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}
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var data = File.ReadAllBytes(oilPath);
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string baseName = Path.GetFileNameWithoutExtension(oilPath).ToLowerInvariant();
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int found = 0;
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for (int i = 0; i < data.Length - 10; i++)
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{
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if (data[i] == 0x0A && Matches(data, i + 1, "TPNGObject"))
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{
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int start = i + 11;
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if (start + 8 < data.Length && data.AsSpan(start, 8).SequenceEqual(PngSig))
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{
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int end = FindPngEnd(data, start);
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if (end > 0)
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{
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Save(data[start..end], found);
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found++;
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i = end - 1;
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}
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}
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}
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else if (data[i] == 0x07 && Matches(data, i + 1, "TBitmap"))
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{
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int lenPos = i + 8;
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if (lenPos + 4 >= data.Length) continue;
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int len = BitConverter.ToInt32(data, lenPos);
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int start = lenPos + 4;
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if (len > 14 && start + len <= data.Length && data[start] == 'B' && data[start + 1] == 'M')
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{
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string file = Path.Combine(_outDir, "tilesets", $"{baseName}_{found:D2}.png");
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SaveBmpAsKeyedPng(data[start..(start + len)], file);
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Console.WriteLine($" {Path.GetFileName(oilPath)}[{found}] (bmp) -> {Path.GetFileName(file)}");
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found++;
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i = start + len - 1;
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}
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}
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}
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Console.WriteLine($" {Path.GetFileName(oilPath)}: {found} images extracted");
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void Save(byte[] png, int idx)
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{
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string file = Path.Combine(_outDir, "tilesets", $"{baseName}_{idx:D2}.png");
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File.WriteAllBytes(file, png);
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Console.WriteLine($" {Path.GetFileName(oilPath)}[{idx}] (png) -> {Path.GetFileName(file)}");
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}
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}
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static bool Matches(byte[] data, int pos, string s)
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{
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if (pos + s.Length > data.Length) return false;
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for (int i = 0; i < s.Length; i++)
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if (data[pos + i] != (byte)s[i]) return false;
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return true;
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}
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static int FindPngEnd(byte[] data, int start)
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{
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// walk PNG chunks: [4B len BE][4B type][data][4B crc] until IEND
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int p = start + 8;
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while (p + 12 <= data.Length)
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{
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int len = (data[p] << 24) | (data[p + 1] << 16) | (data[p + 2] << 8) | data[p + 3];
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string type = Encoding.ASCII.GetString(data, p + 4, 4);
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p += 12 + len;
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if (type == "IEND") return p;
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}
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return -1;
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}
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// ---------------------------------------------------------------- audio
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static void CopyAudio()
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{
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// Files referenced by OmegaMusic1.Songs in GameU.dfm.
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// 'Level test.mp3' (index 1, level2 music) is missing from the source folder;
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// Track06.mp3 is copied as a substitute.
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(string src, string sub)[] files =
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[
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(@"Music\white light.mp3", "music"),
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(@"Music\G2 Final.mp3", "music"),
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(@"Music\Nazi_Rap.mid", "music"),
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(@"Music\Main Menu 2.mp3", "music"),
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(@"Music\G8 Final.mp3", "music"),
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(@"Music\Thunderization.mp3", "music"),
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(@"Music\Intro.mp3", "music"),
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(@"Music\Track06.mp3", "music"),
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(@"Sounds\fire1.wav", "sfx"),
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(@"Sounds\reload.wav", "sfx"),
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(@"Sounds\thump1.wav", "sfx"),
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(@"Sounds\beep.wav", "sfx"),
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(@"Sounds\hit4.wav", "sfx"),
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(@"Sounds\explode2.wav", "sfx"),
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(@"Sounds\missile.wav", "sfx"),
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];
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foreach (var (src, sub) in files)
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{
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string from = Path.Combine(_srcDir, src);
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if (!File.Exists(from))
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{
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Console.WriteLine($" MISSING audio {src}");
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continue;
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}
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string to = Path.Combine(_outDir, sub, Path.GetFileName(src));
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File.Copy(from, to, overwrite: true);
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}
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Console.WriteLine(" audio copied");
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}
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}
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