/// <summary>Reads the tiles. </summary> private void ReadTiles() { var mapSection = GetSection("IsoMapPack5"); byte[] lzoData = Convert.FromBase64String(mapSection.ConcatenatedValues()); int cells = (FullSize.Width * 2 - 1) * FullSize.Height; int lzoPackSize = cells * 11 + 4; // last 4 bytes contains a lzo pack header saying no more data is left var isoMapPack = new byte[lzoPackSize]; uint totalDecompressSize = Format5.DecodeInto(lzoData, isoMapPack); var mf = new MemoryFile(isoMapPack); int numtiles = 0; for (int i = 0; i < cells; i++) { ushort rx = mf.ReadUInt16(); ushort ry = mf.ReadUInt16(); short tilenum = mf.ReadInt16(); short zero1 = mf.ReadInt16(); ushort subtile = mf.ReadByte(); short z = mf.ReadByte(); byte zero2 = mf.ReadByte(); int dx = rx - ry + FullSize.Width - 1; int dy = rx + ry - FullSize.Width - 1; numtiles++; if (dx >= 0 && dx < 2 * Tiles.Width && dy >= 0 && dy < 2 * Tiles.Height) { var tile = new IsoTile((ushort)dx, (ushort)dy, rx, ry, z, tilenum, subtile); Tiles[(ushort)dx, (ushort)dy / 2] = tile; } } // fix missing tiles // import tiles for (ushort y = 0; y < FullSize.Height; y++) { for (ushort x = 0; x <= FullSize.Width * 2 - 2; x++) { var isoTile = Tiles[x, y]; if (isoTile == null) { // fix null tiles to blank ushort dx = (ushort)(x); ushort dy = (ushort)(y * 2 + x % 2); ushort rx = (ushort)((dx + dy) / 2 + 1); ushort ry = (ushort)(dy - rx + FullSize.Width + 1); Tiles[x, y] = new IsoTile(dx, dy, rx, ry, 0, 0, 0); } } } Logger.Debug("Read {0} tiles", numtiles); }
public static int DecodeInto(byte[] src, byte[] dest) { var ctx = new MemoryFile(src); int destIndex = 0; while (true) { byte i = ctx.ReadByte(); if ((i & 0x80) == 0) { int count = i & 0x7F; if (count == 0) { // case 6 count = ctx.ReadByte(); byte value = ctx.ReadByte(); int end = destIndex + count; for (; destIndex < end; destIndex++) { dest[destIndex] ^= value; } } else { // case 5 for (int end = destIndex + count; destIndex < end; destIndex++) { dest[destIndex] ^= ctx.ReadByte(); } } } else { int count = i & 0x7F; if (count == 0) { count = ctx.ReadInt16(); if (count == 0) { return(destIndex); } if ((count & 0x8000) == 0) { // case 2, skip destIndex += (count & 0x7FFF); } else if ((count & 0x4000) == 0) { // case 3 for (int end = destIndex + (count & 0x3FFF); destIndex < end; destIndex++) { dest[destIndex] ^= ctx.ReadByte(); } } else { // case 4 byte value = ctx.ReadByte(); for (int end = destIndex + (count & 0x3FFF); destIndex < end; destIndex++) { dest[destIndex] ^= value; } } } else { // case 1 destIndex += count; } } } }
public static int DecodeInto(byte[] src, byte[] dest) { VirtualFile ctx = new MemoryFile(src); int destIndex = 0; while (true) { byte i = ctx.ReadByte(); if ((i & 0x80) == 0) { // case 2 byte secondByte = ctx.ReadByte(); int count = ((i & 0x70) >> 4) + 3; int rpos = ((i & 0xf) << 8) + secondByte; ReplicatePrevious(dest, destIndex, destIndex - rpos, count); destIndex += count; } else if ((i & 0x40) == 0) { // case 1 int count = i & 0x3F; if (count == 0) { return(destIndex); } ctx.Read(dest, destIndex, count); destIndex += count; } else { int count3 = i & 0x3F; if (count3 == 0x3E) { // case 4 int count = ctx.ReadInt16(); byte color = ctx.ReadByte(); for (int end = destIndex + count; destIndex < end; destIndex++) { dest[destIndex] = color; } } else if (count3 == 0x3F) { // case 5 int count = ctx.ReadInt16(); int srcIndex = ctx.ReadInt16(); if (srcIndex >= destIndex) { throw new NotImplementedException(string.Format("srcIndex >= destIndex {0} {1}", srcIndex, destIndex)); } for (int end = destIndex + count; destIndex < end; destIndex++) { dest[destIndex] = dest[srcIndex++]; } } else { // case 3 int count = count3 + 3; int srcIndex = ctx.ReadInt16(); if (srcIndex >= destIndex) { throw new NotImplementedException(string.Format("srcIndex >= destIndex {0} {1}", srcIndex, destIndex)); } for (int end = destIndex + count; destIndex < end; destIndex++) { dest[destIndex] = dest[srcIndex++]; } } } } }