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version compat system start

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This commit is contained in:
adman
2026-03-09 21:30:31 +01:00
parent 165075ea02
commit c516cc5283
8 changed files with 213 additions and 99 deletions
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level/packet.go
+11 -20
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@@ -76,71 +76,62 @@ func LongsToData(data []uint64, n, bpe int32) (ret []int32) {
return
}
func UnpackBlockData(r io.Reader) (blocks [BlocksPerChunkSection]int32, err error) {
func UnpackBlockData(r io.Reader) (blocks []int32, err error) {
var bitsPerEntry uint8
err = binary.Read(r, binary.BigEndian, &bitsPerEntry)
if err != nil {
return
}
var blocksSlice []int32
fmt.Println("blocks bpe", bitsPerEntry)
switch bitsPerEntry {
case 0:
blocksSlice, err = UnpackSingleValuePalette(r, BlocksPerChunkSection)
blocks, err = UnpackSingleValuePalette(r, BlocksPerChunkSection)
case 1, 2, 3, 4:
blocksSlice, err = UnpackArrayPalette(r, bitsPerEntry, BlocksPerChunkSection)
blocks, err = UnpackArrayPalette(r, bitsPerEntry, BlocksPerChunkSection)
case 5, 6, 7, 8:
err = errors.New("unimplemented")
default:
blocksSlice, err = UnpackLongData(r, bitsPerEntry, BlocksPerChunkSection)
blocks, err = UnpackLongData(r, bitsPerEntry, BlocksPerChunkSection)
}
if err != nil {
return
}
blocks = [BlocksPerChunkSection]int32(blocksSlice)
return
}
func UnpackBiomeData(r io.Reader) (biomes [BiomesPerChunkSection]int32, err error) {
func UnpackBiomeData(r io.Reader) (biomes []int32, err error) {
// net.minecraft.world.chunk.PaletteProvider#forBiomes
var bitsPerEntry uint8
err = binary.Read(r, binary.BigEndian, &bitsPerEntry)
if err != nil {
return
}
var biomesSlice []int32
fmt.Println("biome bpe", bitsPerEntry)
switch bitsPerEntry {
case 0:
biomesSlice, err = UnpackSingleValuePalette(r, BiomesPerChunkSection)
biomes, err = UnpackSingleValuePalette(r, BiomesPerChunkSection)
case 1, 2, 3:
biomesSlice, err = UnpackArrayPalette(r, bitsPerEntry, BiomesPerChunkSection)
biomes, err = UnpackArrayPalette(r, bitsPerEntry, BiomesPerChunkSection)
default:
biomesSlice, err = UnpackLongData(r, bitsPerEntry, BiomesPerChunkSection)
biomes, err = UnpackLongData(r, bitsPerEntry, BiomesPerChunkSection)
}
if err != nil {
return
}
biomes = [BiomesPerChunkSection]int32(biomesSlice)
return
}
type ChunkSection struct {
BlockData [BlocksPerChunkSection]int32
BiomeData [BiomesPerChunkSection]int32
}
func UnpackSection(r io.Reader) (s ChunkSection, err error) {
func UnpackSection(r io.Reader) (blocks, biomes []int32, err error) {
var blockCount int16
err = binary.Read(r, binary.BigEndian, &blockCount)
if err != nil {
return
}
s.BlockData, err = UnpackBlockData(r)
blocks, err = UnpackBlockData(r)
if err != nil {
return
}
s.BiomeData, err = UnpackBiomeData(r)
biomes, err = UnpackBiomeData(r)
if err != nil {
return
}