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.SpawnRotY = (float)Utils.PackedToDegrees((byte)spawn["H"].Value);
}
if (spawn.ContainsKey("P"))
{
p.SpawnHeadX = (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 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 unsafe NbtTag ReadTag(byte typeId, bool readTagName)
{
NbtTag tag = default(NbtTag);
if (typeId == 0)
{
tag.TagId = NbtTagType.Invalid; return(tag);
}
tag.Name = readTagName ? ReadString() : null;
tag.TagId = (NbtTagType)typeId;
switch ((NbtTagType)typeId)
{
case NbtTagType.Int8:
tag.Value = reader.ReadByte(); break;
case NbtTagType.Int16:
tag.Value = ReadInt16(); break;
case NbtTagType.Int32:
tag.Value = ReadInt32(); break;
case NbtTagType.Int64:
tag.Value = ReadInt64(); break;
case NbtTagType.Real32:
int temp32 = ReadInt32();
tag.Value = *((float *)&temp32); break;
case NbtTagType.Real64:
long temp64 = ReadInt64();
tag.Value = *((double *)&temp64); break;
case NbtTagType.Int8Array:
tag.Value = reader.ReadBytes(ReadInt32()); break;
case NbtTagType.String:
tag.Value = ReadString(); break;
case NbtTagType.List:
NbtList list = new NbtList();
list.ChildTagId = (NbtTagType)reader.ReadByte();
list.ChildrenValues = new object[ReadInt32()];
for (int i = 0; i < list.ChildrenValues.Length; i++)
{
list.ChildrenValues[i] = ReadTag((byte)list.ChildTagId, false).Value;
}
tag.Value = list; break;
case NbtTagType.Compound:
Dictionary <string, NbtTag> children = new Dictionary <string, NbtTag>();
NbtTag child;
while ((child = ReadTag(reader.ReadByte(), true)).TagId != NbtTagType.Invalid)
{
children[child.Name] = child;
}
tag.Value = children; break;
case NbtTagType.Int32Array:
int[] array = new int[ReadInt32()];
for (int i = 0; i < array.Length; i++)
{
array[i] = ReadInt32();
}
tag.Value = array; break;
default:
throw new InvalidDataException("Unrecognised tag id: " + typeId);
}
return(tag);
}
