// LoadLevel loads level data from the given level.dat file.
func LoadLevel(file string) (*Level, error) {
fd, err := os.Open(file)
if err != nil {
return nil, err
}
defer fd.Close()
gz, err := gzip.NewReader(fd)
if err != nil {
return nil, err
}
defer gz.Close()
var v struct {
Data Level
}
err = nbt.Unmarshal(gz, &v)
if err != nil {
return nil, err
}
return &v.Data, nil
}
// Read decompresses chunk data into the given structure.
// Returns false if ther eis no data or the decompression failed.
func (cd *ChunkDescriptor) Read(c *Chunk) bool {
var r io.ReadCloser
var err error
buf := bytes.NewBuffer(cd.data)
switch cd.scheme {
case GZip:
r, err = gzip.NewReader(buf)
case ZLib:
r, err = zlib.NewReader(buf)
default:
return false
}
if err != nil {
return false
}
// Clear out existing data; the nbt decoder will append to the existing slices.
c.Sections = nil
c.Biomes = nil
c.HeightMap = nil
c.Entities = nil
c.TileEntities = nil
c.TileTicks = nil
var v struct {
Level *Chunk
}
v.Level = c
err = nbt.Unmarshal(r, &v)
r.Close()
if err != nil {
return false
}
return true
}