96 lines
2.0 KiB
Go
96 lines
2.0 KiB
Go
package save
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import (
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"bytes"
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"compress/gzip"
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"compress/zlib"
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"errors"
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"io"
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"github.com/Tnze/go-mc/nbt"
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)
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// Chunk is 16* chunk
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type Chunk struct {
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DataVersion int32
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XPos int32 `nbt:"xPos"`
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YPos int32 `nbt:"yPos"`
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ZPos int32 `nbt:"zPos"`
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BlockEntities []nbt.RawMessage `nbt:"block_entities"`
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Structures nbt.RawMessage `nbt:"structures"`
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Heightmaps struct {
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MotionBlocking []uint64 `nbt:"MOTION_BLOCKING"`
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MotionBlockingNoLeaves []uint64 `nbt:"MOTION_BLOCKING_NO_LEAVES"`
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OceanFloor []uint64 `nbt:"OCEAN_FLOOR"`
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WorldSurface []uint64 `nbt:"WORLD_SURFACE"`
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}
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Sections []Section `nbt:"sections"`
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BlockTicks nbt.RawMessage `nbt:"block_ticks"`
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FluidTicks nbt.RawMessage `nbt:"fluid_ticks"`
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PostProcessing nbt.RawMessage
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InhabitedTime int64
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IsLightOn byte `nbt:"isLightOn"`
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LastUpdate int64
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Status string
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}
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type Section struct {
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Y int8
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BlockStates struct {
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Palette []BlockState `nbt:"palette"`
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Data []uint64 `nbt:"data"`
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} `nbt:"block_states"`
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Biomes struct {
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Palette []string `nbt:"palette"`
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Data []uint64 `nbt:"data"`
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} `nbt:"biomes"`
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SkyLight []byte
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BlockLight []byte
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}
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type BlockState struct {
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Name string
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Properties nbt.RawMessage
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}
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// Load read column data from []byte
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func (c *Chunk) Load(data []byte) (err error) {
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var r io.Reader = bytes.NewReader(data[1:])
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switch data[0] {
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default:
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err = errors.New("unknown compression")
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case 1:
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r, err = gzip.NewReader(r)
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case 2:
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r, err = zlib.NewReader(r)
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case 3:
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// none compression
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}
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if err != nil {
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return err
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}
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_, err = nbt.NewDecoder(r).Decode(c)
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return
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}
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func (c *Chunk) Data(compressingType byte) ([]byte, error) {
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var buff bytes.Buffer
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buff.WriteByte(compressingType)
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var w io.Writer
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switch compressingType {
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default:
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return nil, errors.New("unknown compression")
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case 1:
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w = gzip.NewWriter(&buff)
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case 2:
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w = zlib.NewWriter(&buff)
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}
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err := nbt.NewEncoder(w).Encode(c, "")
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return buff.Bytes(), err
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}
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