42 private function __construct(){
55 return match($dimensionId){
56 DimensionIds::OVERWORLD => [-4, 19],
57 DimensionIds::NETHER => [0, 7],
58 DimensionIds::THE_END => [0, 15],
59 default =>
throw new \InvalidArgumentException(
"Unknown dimension ID $dimensionId"),
72 [$minSubChunkIndex, $maxSubChunkIndex] = self::getDimensionChunkBounds($dimensionId);
73 for($y = $maxSubChunkIndex, $count = $maxSubChunkIndex - $minSubChunkIndex + 1; $y >= $minSubChunkIndex; --$y, --$count){
74 if($chunk->getSubChunk($y)->isEmptyFast()){
87 $stream = new ByteBufferWriter();
89 $subChunkCount = self::getSubChunkCount($chunk, $dimensionId);
92 [$minSubChunkIndex, $maxSubChunkIndex] = self::getDimensionChunkBounds($dimensionId);
93 for($y = $minSubChunkIndex; $writtenCount < $subChunkCount; ++$y, ++$writtenCount){
94 self::serializeSubChunk($chunk->getSubChunk($y), $blockTranslator, $stream,
false);
97 $biomeIdMap = LegacyBiomeIdToStringIdMap::getInstance();
99 for($y = $minSubChunkIndex; $y <= $maxSubChunkIndex; ++$y){
100 self::serializeBiomePalette($chunk->getSubChunk($y)->getBiomeArray(), $biomeIdMap, $stream);
103 Byte::writeUnsigned($stream, 0);
107 $stream->writeByteArray($tiles);
109 $stream->writeByteArray(self::serializeTiles($chunk));
111 return $stream->getData();
114 public static function serializeSubChunk(SubChunk $subChunk, BlockTranslator $blockTranslator, ByteBufferWriter $stream,
bool $persistentBlockStates) : void{
115 $layers = $subChunk->getBlockLayers();
116 Byte::writeUnsigned($stream, 8);
118 Byte::writeUnsigned($stream, count($layers));
120 $blockStateDictionary = $blockTranslator->getBlockStateDictionary();
122 foreach($layers as $blocks){
123 $bitsPerBlock = $blocks->getBitsPerBlock();
124 $words = $blocks->getWordArray();
125 Byte::writeUnsigned($stream, ($bitsPerBlock << 1) | ($persistentBlockStates ? 0 : 1));
126 $stream->writeByteArray($words);
127 $palette = $blocks->getPalette();
129 if($bitsPerBlock !== 0){
130 VarInt::writeSignedInt($stream, count($palette));
132 if($persistentBlockStates){
133 $nbtSerializer =
new NetworkNbtSerializer();
134 foreach($palette as $p){
136 $state = $blockStateDictionary->generateDataFromStateId($blockTranslator->internalIdToNetworkId($p));
138 $state = $blockTranslator->getFallbackStateData();
141 $stream->writeByteArray($nbtSerializer->write(
new TreeRoot($state->toNbt())));
146 foreach($palette as $p){
147 VarInt::writeSignedInt($stream, $blockTranslator->internalIdToNetworkId($p));
153 private static function serializeBiomePalette(PalettedBlockArray $biomePalette, LegacyBiomeIdToStringIdMap $biomeIdMap, ByteBufferWriter $stream) : void{
154 $biomePaletteBitsPerBlock = $biomePalette->getBitsPerBlock();
155 Byte::writeUnsigned($stream, ($biomePaletteBitsPerBlock << 1) | 1);
156 $stream->writeByteArray($biomePalette->getWordArray());
158 $biomePaletteArray = $biomePalette->getPalette();
159 if($biomePaletteBitsPerBlock !== 0){
160 VarInt::writeSignedInt($stream, count($biomePaletteArray));
163 foreach($biomePaletteArray as $p){
166 VarInt::writeSignedInt($stream, $biomeIdMap->legacyToString($p) !==
null ? $p : BiomeIds::OCEAN);
170 public static function serializeTiles(Chunk $chunk) : string{
171 $stream = new ByteBufferWriter();
172 foreach($chunk->getTiles() as $tile){
173 if($tile instanceof Spawnable){
174 $stream->writeByteArray($tile->getSerializedSpawnCompound()->getEncodedNbt());
178 return $stream->getData();