public Anvil(string path)
{
NbtTag levelDat = new NbtFile(Path.Combine(path, "level.dat")).RootTag["Data"];
string levelName = levelDat["LevelName"].StringValue;
string[] regionFiles = Directory.GetFiles(Path.Combine(path, "region"), "*.mca");
for (int idx = 0; idx < regionFiles.Length; idx++)
ParseRegion(regionFiles[idx]);
Bounds bounds = ScanForBounds();
boundaryWidth = bounds.Width;
boundaryHeight = bounds.Height;
boundaryLength = bounds.Length;
offsetX = -bounds.minX;
offsetY = -bounds.minY;
offsetZ = -bounds.minZ;
Console.WriteLine("Extracting blocks within boundary.");
foreach (KeyValuePair<CoordinateInt, Block[]> pair in chunks)
{
CoordinateInt chunkCoord = pair.Key;
if (bounds.ContainsChunk(chunkCoord))
for (int idx = 0; idx < pair.Value.Length; idx++)
if (BlockTypeIsSupported(pair.Value[idx].id))
{
int absoluteX = chunkCoord.X * 16 + idx % 16;
int absoluteZ = chunkCoord.Z * 16 + (idx / 16) % 16;
int absoluteY = chunkCoord.Y * 16 + idx / (16 * 16);
if (bounds.Contains(absoluteX, absoluteY, absoluteZ))
{
CoordinateInt blockCoord =
new CoordinateInt(absoluteX + offsetX, absoluteZ + offsetZ, absoluteY + offsetY);
blocks[blockCoord] = new Block(pair.Value[idx].id, 0);// pair.Value[idx].data);
}
}
}
}
private void ParseRegion(string regionPath)
{
string fileName = Path.GetFileName(regionPath);
int chunkCount = 0;
using (BinaryReader binaryReader = new BinaryReader(File.Open(regionPath, FileMode.Open)))
{
List<LocationData> locationList = new List<LocationData>();
for (int idx = 0; idx < 1024; idx++)
{
int row = Endian.ToBig(binaryReader.ReadInt32());
int offset = (row >> 8);
byte sectorCount = (byte)(row & 0x000000FF);
if (offset != 0 || sectorCount != 0)
locationList.Add(new LocationData(idx % 32, idx / 32, offset, sectorCount));
}
for (int locationIdx = 0; locationIdx < locationList.Count; locationIdx++)
{
binaryReader.BaseStream.Seek(sectorSize * locationList[locationIdx].offset, SeekOrigin.Begin);
int length = Endian.ToBig(binaryReader.ReadInt32());
byte compressionType = binaryReader.ReadByte();
byte[] dataBuffer = binaryReader.ReadBytes(length - 1);
NbtFile region = new NbtFile();
region.LoadFromBuffer(dataBuffer, 0, dataBuffer.Length, NbtCompression.ZLib);
NbtTag levelTag = region.RootTag["Level"];
int chunkX = levelTag["xPos"].IntValue;
int chunkZ = levelTag["zPos"].IntValue;
NbtList sections = levelTag["Sections"] as NbtList;
for (int sectionIdx = 0; sectionIdx < sections.Count; sectionIdx++)
{
Block[] blocks = new Block[16 * 16 * 16];
NbtTag sectionTag = sections[sectionIdx];
int offsetY = sectionTag["Y"].ByteValue;
byte[] blockIDs = sectionTag["Blocks"].ByteArrayValue;
byte[] blockData = sectionTag["Data"].ByteArrayValue;
for (int blockIdx = 0; blockIdx < blockIDs.Length; blockIdx++)
blocks[blockIdx] = new Block((BlockIdentifier)blockIDs[blockIdx], MaskTo4Bit(blockData, blockIdx));
CoordinateInt coord = new CoordinateInt(chunkX, offsetY, chunkZ);
chunks.Add(coord, blocks);
chunkCount++;
}
}
Console.WriteLine("Parsed {0} ({1} chunks)", fileName, chunkCount);
}
}
