void WriteBlocks( NbtFile nbt, byte[] blocks )
{
const int chunkSize = 64 * 1024 * 32;
nbt.Write( NbtTagType.Int8Array );
nbt.Write( "Blocks" );
nbt.WriteInt32( blocks.Length );
for( int i = 0; i < blocks.Length; i += chunkSize ) {
int count = Math.Min( chunkSize, blocks.Length - i );
nbt.WriteBytes( blocks, i, count );
}
}
void WriteBlockData( NbtFile nbt, byte[] blocks )
{
const int chunkSize = 64 * 1024;
byte[] chunk = new byte[chunkSize];
nbt.Write( NbtTagType.Int8Array );
nbt.Write( "Data" );
nbt.WriteInt32( blocks.Length );
for( int i = 0; i < blocks.Length; i += chunkSize ) {
// All 0 so we can skip this.
int count = Math.Min( chunkSize, blocks.Length - i );
nbt.WriteBytes( chunk, 0, count );
}
}
public byte[] Load( Stream stream, Game game, out int width, out int height, out int length )
{
GZipHeaderReader gsHeader = new GZipHeaderReader();
while( !gsHeader.ReadHeader( stream ) ) { }
using( DeflateStream gs = new DeflateStream( stream, CompressionMode.Decompress ) ) {
reader = new BinaryReader( gs );
if( reader.ReadByte() != (byte)NbtTagType.Compound )
throw new InvalidDataException( "Nbt file must start with Tag_Compound" );
this.game = game;
map = game.World;
file = new NbtFile( reader );
NbtTag root = file.ReadTag( (byte)NbtTagType.Compound, true );
NbtCompound children = (NbtCompound)root.Value;
if( children.ContainsKey( "Metadata" ) )
ParseMetadata( children );
NbtCompound spawn = (NbtCompound)children["Spawn"].Value;
LocalPlayer p = game.LocalPlayer;
p.Spawn.X = (short)spawn["X"].Value;
p.Spawn.Y = (short)spawn["Y"].Value;
p.Spawn.Z = (short)spawn["Z"].Value;
if( spawn.ContainsKey( "H" ) )
p.SpawnYaw = (float)Utils.PackedToDegrees( (byte)spawn["H"].Value );
if( spawn.ContainsKey( "P" ) )
p.SpawnPitch = (float)Utils.PackedToDegrees( (byte)spawn["P"].Value );
map.Uuid = new Guid( (byte[])children["UUID"].Value );
width = (short)children["X"].Value;
height = (short)children["Y"].Value;
length = (short)children["Z"].Value;
// Older versions incorrectly multiplied spawn coords by * 32, so we check for that.
if( p.Spawn.X < 0 || p.Spawn.X >= width || p.Spawn.Y < 0 ||
p.Spawn.Y >= height || p.Spawn.Z < 0 || p.Spawn.Z >= length ) {
p.Spawn.X /= 32; p.Spawn.Y /= 32; p.Spawn.Z /= 32;
}
return (byte[])children["BlockArray"].Value;
}
}
public void Save(Stream stream, Game game)
{
using (GZipStream wrapper = new GZipStream(stream, CompressionMode.Compress)) {
BinaryWriter writer = new BinaryWriter(wrapper);
NbtFile nbt = new NbtFile(writer);
World map = game.World;
nbt.Write(NbtTagType.Compound); nbt.Write("Schematic");
nbt.Write(NbtTagType.String);
nbt.Write("Materials"); nbt.Write("Classic");
nbt.Write(NbtTagType.Int16);
nbt.Write("Width"); nbt.WriteInt16((short)map.Width);
nbt.Write(NbtTagType.Int16);
nbt.Write("Height"); nbt.WriteInt16((short)map.Height);
nbt.Write(NbtTagType.Int16);
nbt.Write("Length"); nbt.WriteInt16((short)map.Length);
#if USE16_BIT
WriteBlocks(nbt, Utils.UInt16sToUInt8s(map.blocks));
#else
WriteBlocks(nbt, map.blocks);
#endif
WriteBlockData(nbt, map.blocks.Length);
nbt.Write(NbtTagType.List);
nbt.Write("Entities");
nbt.Write(NbtTagType.Compound); nbt.WriteInt32(0);
nbt.Write(NbtTagType.List);
nbt.Write("TileEntities");
nbt.Write(NbtTagType.Compound); nbt.WriteInt32(0);
nbt.Write(NbtTagType.End);
}
}
public bool LoadChunk(ref Chunk chunk, string path)
{
try {
using (FileStream fs = File.OpenRead(path)) {
GZipHeaderReader gsheader = new GZipHeaderReader();
while (!gsheader.ReadHeader(fs))
{
}
using (DeflateStream gs = new DeflateStream(fs, CompressionMode.Decompress)) {
BinaryReader reader = new BinaryReader(gs);
if (reader.ReadByte() != (byte)NbtTagType.Compound)
{
throw new InvalidDataException("Nbt file must start with Tag_Compound");
}
NbtFile file = new NbtFile(reader);
NbtTag root = file.ReadTag((byte)NbtTagType.Compound, true);
NbtCompound children = (NbtCompound)root.Value;
if (children.ContainsKey("Level"))
{
NbtCompound levelChildren = (NbtCompound)children["Level"].Value;
chunk.blocks = (byte[])levelChildren["Blocks"].Value;
int size = 16 * 128 * 16;
int halfSize = size / 2;
byte[] data = (byte[])levelChildren["Data"].Value;
chunk.metadata = new NibbleSlice(data, 0, halfSize);
chunk.populated = ((byte)levelChildren["TerrainPopulated"].Value != 0);
return(true);
}
}
}
} catch (Exception ex) {
ErrorHandler.LogError("loading chunk", ex);
game.Chat.Add("Failed to load chunk.");
return(false);
}
return(false);
}
public void Save( Stream stream, Game game )
{
using( GZipStream wrapper = new GZipStream( stream, CompressionMode.Compress ) ) {
writer = new BinaryWriter( wrapper );
nbt = new NbtFile( writer );
this.game = game;
map = game.World;
nbt.Write( NbtTagType.Compound ); nbt.Write( "ClassicWorld" );
nbt.Write( NbtTagType.Int8 );
nbt.Write( "FormatVersion" ); nbt.WriteInt8( 1 );
nbt.Write( NbtTagType.Int8Array );
nbt.Write( "UUID" ); nbt.WriteInt32( 16 );
nbt.WriteBytes( map.Uuid.ToByteArray() );
nbt.Write( NbtTagType.Int16 );
nbt.Write( "X" ); nbt.WriteInt16( (short)map.Width );
nbt.Write( NbtTagType.Int16 );
nbt.Write( "Y" ); nbt.WriteInt16( (short)map.Height );
nbt.Write( NbtTagType.Int16 );
nbt.Write( "Z" ); nbt.WriteInt16( (short)map.Length );
WriteSpawnCompoundTag();
nbt.Write( NbtTagType.Int8Array );
nbt.Write( "BlockArray" ); nbt.WriteInt32( map.blocks.Length );
nbt.WriteBytes( map.blocks );
WriteMetadata();
nbt.Write( NbtTagType.End );
}
}
public void Save(Stream stream, Game game)
{
using (GZipStream wrapper = new GZipStream(stream, CompressionMode.Compress)) {
writer = new BinaryWriter(wrapper);
nbt = new NbtFile(writer);
this.game = game;
map = game.World;
nbt.Write(NbtTagType.Compound); nbt.Write("ClassicWorld");
nbt.Write(NbtTagType.Int8);
nbt.Write("FormatVersion"); nbt.WriteUInt8(1);
nbt.Write(NbtTagType.Int8Array);
nbt.Write("UUID"); nbt.WriteInt32(16);
nbt.WriteBytes(map.Uuid.ToByteArray());
nbt.Write(NbtTagType.Int16);
nbt.Write("X"); nbt.WriteInt16((short)map.Width);
nbt.Write(NbtTagType.Int16);
nbt.Write("Y"); nbt.WriteInt16((short)map.Height);
nbt.Write(NbtTagType.Int16);
nbt.Write("Z"); nbt.WriteInt16((short)map.Length);
WriteSpawnCompoundTag();
nbt.Write(NbtTagType.Int8Array);
nbt.Write("BlockArray"); nbt.WriteInt32(map.blocks1.Length);
nbt.WriteBytes(map.blocks1);
WriteMetadata();
nbt.Write(NbtTagType.End);
}
}
public void Save( Stream stream, Game game )
{
using( GZipStream wrapper = new GZipStream( stream, CompressionMode.Compress ) ) {
BinaryWriter writer = new BinaryWriter( wrapper );
NbtFile nbt = new NbtFile( writer );
World map = game.World;
nbt.Write( NbtTagType.Compound ); nbt.Write( "Schematic" );
nbt.Write( NbtTagType.String );
nbt.Write( "Materials" ); nbt.Write( "Classic" );
nbt.Write( NbtTagType.Int16 );
nbt.Write( "Width" ); nbt.WriteInt16( (short)map.Width );
nbt.Write( NbtTagType.Int16 );
nbt.Write( "Height" ); nbt.WriteInt16( (short)map.Height );
nbt.Write( NbtTagType.Int16 );
nbt.Write( "Length" ); nbt.WriteInt16( (short)map.Length );
WriteBlocks( nbt, map.blocks );
WriteBlockData( nbt, map.blocks );
nbt.Write( NbtTagType.List );
nbt.Write( "Entities" );
nbt.Write( NbtTagType.Compound ); nbt.WriteInt32( 0 );
nbt.Write( NbtTagType.List );
nbt.Write( "TileEntities" );
nbt.Write( NbtTagType.Compound ); nbt.WriteInt32( 0 );
nbt.Write( NbtTagType.End );
}
}
