mirror of
https://github.com/pmmp/PocketMine-MP.git
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95 lines
2.8 KiB
PHP
95 lines
2.8 KiB
PHP
<?php
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/*
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*
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* ____ _ _ __ __ _ __ __ ____
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* | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
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* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
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* | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
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* |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* @author PocketMine Team
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* @link http://www.pocketmine.net/
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*
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*
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*/
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declare(strict_types=1);
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namespace pocketmine\network\mcpe\serializer;
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use pocketmine\block\tile\Spawnable;
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use pocketmine\network\mcpe\protocol\types\RuntimeBlockMapping;
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use pocketmine\utils\BinaryStream;
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use pocketmine\world\format\Chunk;
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use function count;
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final class ChunkSerializer{
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private function __construct(){
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//NOOP
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}
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/**
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* Returns the number of subchunks that will be sent from the given chunk.
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* Chunks are sent in a stack, so every chunk below the top non-empty one must be sent.
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*/
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public static function getSubChunkCount(Chunk $chunk) : int{
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for($count = $chunk->getSubChunks()->count(); $count > 0; --$count){
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if($chunk->getSubChunk($count - 1)->isEmptyFast()){
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continue;
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}
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break;
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}
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return $count;
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}
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public static function serialize(Chunk $chunk, ?string $tiles = null) : string{
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$stream = new NetworkBinaryStream();
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$subChunkCount = self::getSubChunkCount($chunk);
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for($y = 0; $y < $subChunkCount; ++$y){
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$layers = $chunk->getSubChunk($y)->getBlockLayers();
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$stream->putByte(8); //version
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$stream->putByte(count($layers));
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foreach($layers as $blocks){
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$stream->putByte(($blocks->getBitsPerBlock() << 1) | 1); //last 1-bit means "network format", but seems pointless
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$stream->put($blocks->getWordArray());
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$palette = $blocks->getPalette();
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$stream->putVarInt(count($palette)); //yes, this is intentionally zigzag
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foreach($palette as $p){
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$stream->putVarInt(RuntimeBlockMapping::toStaticRuntimeId($p >> 4, $p & 0xf));
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}
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}
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}
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$stream->put($chunk->getBiomeIdArray());
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$stream->putByte(0); //border block array count
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//Border block entry format: 1 byte (4 bits X, 4 bits Z). These are however useless since they crash the regular client.
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if($tiles !== null){
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$stream->put($tiles);
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}else{
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$stream->put(self::serializeTiles($chunk));
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}
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return $stream->getBuffer();
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}
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public static function serializeTiles(Chunk $chunk) : string{
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$stream = new BinaryStream();
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foreach($chunk->getTiles() as $tile){
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if($tile instanceof Spawnable){
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$stream->put($tile->getSerializedSpawnCompound());
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}
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}
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return $stream->getBuffer();
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}
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}
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