mirror of
https://github.com/pmmp/PocketMine-MP.git
synced 2025-05-28 08:07:01 +00:00
17037f5e9c
I have no idea why the extra check was there, or why the null assignment was used, because it doesn't make any sense.
968 lines
23 KiB
PHP
968 lines
23 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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/**
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* Implementation of MCPE-style chunks with subchunks with XZY ordering.
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*/
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declare(strict_types=1);
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namespace pocketmine\level\format;
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use pocketmine\block\BlockFactory;
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use pocketmine\entity\Entity;
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use pocketmine\level\Level;
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use pocketmine\nbt\tag\CompoundTag;
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use pocketmine\nbt\tag\StringTag;
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use pocketmine\Player;
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use pocketmine\tile\Spawnable;
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use pocketmine\tile\Tile;
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use pocketmine\utils\BinaryStream;
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use function array_fill;
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use function array_filter;
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use function array_values;
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use function assert;
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use function chr;
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use function count;
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use function ord;
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use function pack;
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use function str_repeat;
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use function strlen;
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use function unpack;
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class Chunk{
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public const MAX_SUBCHUNKS = 16;
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/** @var int */
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protected $x;
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/** @var int */
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protected $z;
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/** @var bool */
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protected $hasChanged = false;
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/** @var bool */
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protected $isInit = false;
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/** @var bool */
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protected $lightPopulated = false;
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/** @var bool */
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protected $terrainGenerated = false;
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/** @var bool */
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protected $terrainPopulated = false;
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/** @var int */
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protected $height = Chunk::MAX_SUBCHUNKS;
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/** @var \SplFixedArray|SubChunkInterface[] */
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protected $subChunks;
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/** @var EmptySubChunk */
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protected $emptySubChunk;
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/** @var Tile[] */
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protected $tiles = [];
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/** @var Tile[] */
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protected $tileList = [];
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/** @var Entity[] */
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protected $entities = [];
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/** @var \SplFixedArray|int[] */
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protected $heightMap;
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/** @var string */
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protected $biomeIds;
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/** @var CompoundTag[] */
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protected $NBTtiles = [];
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/** @var CompoundTag[] */
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protected $NBTentities = [];
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/**
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* @param int $chunkX
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* @param int $chunkZ
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* @param SubChunkInterface[] $subChunks
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* @param CompoundTag[] $entities
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* @param CompoundTag[] $tiles
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* @param string $biomeIds
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* @param int[] $heightMap
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*/
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public function __construct(int $chunkX, int $chunkZ, array $subChunks = [], array $entities = [], array $tiles = [], string $biomeIds = "", array $heightMap = []){
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$this->x = $chunkX;
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$this->z = $chunkZ;
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$this->height = Chunk::MAX_SUBCHUNKS; //TODO: add a way of changing this
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$this->subChunks = new \SplFixedArray($this->height);
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$this->emptySubChunk = EmptySubChunk::getInstance();
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foreach($this->subChunks as $y => $null){
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$this->subChunks[$y] = $subChunks[$y] ?? $this->emptySubChunk;
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}
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if(count($heightMap) === 256){
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$this->heightMap = \SplFixedArray::fromArray($heightMap);
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}else{
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assert(count($heightMap) === 0, "Wrong HeightMap value count, expected 256, got " . count($heightMap));
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$val = ($this->height * 16);
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$this->heightMap = \SplFixedArray::fromArray(array_fill(0, 256, $val));
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}
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if(strlen($biomeIds) === 256){
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$this->biomeIds = $biomeIds;
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}else{
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assert($biomeIds === "", "Wrong BiomeIds value count, expected 256, got " . strlen($biomeIds));
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$this->biomeIds = str_repeat("\x00", 256);
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}
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$this->NBTtiles = $tiles;
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$this->NBTentities = $entities;
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}
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/**
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* @return int
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*/
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public function getX() : int{
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return $this->x;
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}
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/**
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* @return int
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*/
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public function getZ() : int{
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return $this->z;
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}
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public function setX(int $x){
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$this->x = $x;
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}
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/**
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* @param int $z
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*/
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public function setZ(int $z){
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$this->z = $z;
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}
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/**
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* Returns the chunk height in count of subchunks.
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*
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* @return int
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*/
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public function getHeight() : int{
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return $this->height;
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}
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/**
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* Returns a bitmap of block ID and meta at the specified chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $y
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* @param int $z 0-15
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*
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* @return int bitmap, (id << 4) | meta
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*/
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public function getFullBlock(int $x, int $y, int $z) : int{
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return $this->getSubChunk($y >> 4)->getFullBlock($x, $y & 0x0f, $z);
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}
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/**
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* Sets block ID and meta in one call at the specified chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $y
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* @param int $z 0-15
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* @param int|null $blockId 0-255 if null, does not change
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* @param int|null $meta 0-15 if null, does not change
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*
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* @return bool
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*/
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public function setBlock(int $x, int $y, int $z, ?int $blockId = null, ?int $meta = null) : bool{
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if($this->getSubChunk($y >> 4, true)->setBlock($x, $y & 0x0f, $z, $blockId !== null ? ($blockId & 0xff) : null, $meta !== null ? ($meta & 0x0f) : null)){
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$this->hasChanged = true;
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return true;
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}
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return false;
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}
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/**
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* Returns the block ID at the specified chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $y
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* @param int $z 0-15
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*
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* @return int 0-255
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*/
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public function getBlockId(int $x, int $y, int $z) : int{
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return $this->getSubChunk($y >> 4)->getBlockId($x, $y & 0x0f, $z);
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}
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/**
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* Sets the block ID at the specified chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $y
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* @param int $z 0-15
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* @param int $id 0-255
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*/
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public function setBlockId(int $x, int $y, int $z, int $id){
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if($this->getSubChunk($y >> 4, true)->setBlockId($x, $y & 0x0f, $z, $id)){
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$this->hasChanged = true;
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}
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}
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/**
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* Returns the block meta value at the specified chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $y
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* @param int $z 0-15
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*
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* @return int 0-15
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*/
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public function getBlockData(int $x, int $y, int $z) : int{
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return $this->getSubChunk($y >> 4)->getBlockData($x, $y & 0x0f, $z);
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}
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/**
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* Sets the block meta value at the specified chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $y
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* @param int $z 0-15
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* @param int $data 0-15
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*/
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public function setBlockData(int $x, int $y, int $z, int $data){
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if($this->getSubChunk($y >> 4, true)->setBlockData($x, $y & 0x0f, $z, $data)){
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$this->hasChanged = true;
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}
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}
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/**
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* Returns the sky light level at the specified chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $y
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* @param int $z 0-15
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*
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* @return int 0-15
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*/
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public function getBlockSkyLight(int $x, int $y, int $z) : int{
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return $this->getSubChunk($y >> 4)->getBlockSkyLight($x, $y & 0x0f, $z);
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}
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/**
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* Sets the sky light level at the specified chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $y
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* @param int $z 0-15
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* @param int $level 0-15
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*/
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public function setBlockSkyLight(int $x, int $y, int $z, int $level){
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if($this->getSubChunk($y >> 4, true)->setBlockSkyLight($x, $y & 0x0f, $z, $level)){
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$this->hasChanged = true;
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}
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}
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/**
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* @param int $level
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*/
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public function setAllBlockSkyLight(int $level){
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$char = chr(($level & 0x0f) | ($level << 4));
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$data = str_repeat($char, 2048);
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for($y = $this->getHighestSubChunkIndex(); $y >= 0; --$y){
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$this->getSubChunk($y, true)->setBlockSkyLightArray($data);
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}
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}
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/**
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* Returns the block light level at the specified chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $y 0-15
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* @param int $z 0-15
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*
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* @return int 0-15
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*/
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public function getBlockLight(int $x, int $y, int $z) : int{
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return $this->getSubChunk($y >> 4)->getBlockLight($x, $y & 0x0f, $z);
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}
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/**
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* Sets the block light level at the specified chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $y 0-15
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* @param int $z 0-15
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* @param int $level 0-15
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*/
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public function setBlockLight(int $x, int $y, int $z, int $level){
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if($this->getSubChunk($y >> 4, true)->setBlockLight($x, $y & 0x0f, $z, $level)){
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$this->hasChanged = true;
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}
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}
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/**
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* @param int $level
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*/
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public function setAllBlockLight(int $level){
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$char = chr(($level & 0x0f) | ($level << 4));
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$data = str_repeat($char, 2048);
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for($y = $this->getHighestSubChunkIndex(); $y >= 0; --$y){
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$this->getSubChunk($y, true)->setBlockLightArray($data);
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}
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}
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/**
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* Returns the Y coordinate of the highest non-air block at the specified X/Z chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $z 0-15
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*
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* @return int 0-255, or -1 if there are no blocks in the column
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*/
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public function getHighestBlockAt(int $x, int $z) : int{
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$index = $this->getHighestSubChunkIndex();
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if($index === -1){
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return -1;
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}
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for($y = $index; $y >= 0; --$y){
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$height = $this->getSubChunk($y)->getHighestBlockAt($x, $z) | ($y << 4);
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if($height !== -1){
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return $height;
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}
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}
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return -1;
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}
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public function getMaxY() : int{
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return ($this->getHighestSubChunkIndex() << 4) | 0x0f;
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}
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/**
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* Returns the heightmap value at the specified X/Z chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $z 0-15
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*
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* @return int
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*/
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public function getHeightMap(int $x, int $z) : int{
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return $this->heightMap[($z << 4) | $x];
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}
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/**
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* Returns the heightmap value at the specified X/Z chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $z 0-15
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* @param int $value
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*/
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public function setHeightMap(int $x, int $z, int $value){
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$this->heightMap[($z << 4) | $x] = $value;
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}
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/**
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* Recalculates the heightmap for the whole chunk.
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*/
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public function recalculateHeightMap(){
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for($z = 0; $z < 16; ++$z){
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for($x = 0; $x < 16; ++$x){
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$this->recalculateHeightMapColumn($x, $z);
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}
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}
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}
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/**
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* Recalculates the heightmap for the block column at the specified X/Z chunk coordinates
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*
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* @param int $x 0-15
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* @param int $z 0-15
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*
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* @return int New calculated heightmap value (0-256 inclusive)
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*/
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public function recalculateHeightMapColumn(int $x, int $z) : int{
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$max = $this->getHighestBlockAt($x, $z);
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for($y = $max; $y >= 0; --$y){
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if(BlockFactory::$lightFilter[$id = $this->getBlockId($x, $y, $z)] > 1 or BlockFactory::$diffusesSkyLight[$id]){
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break;
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}
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}
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$this->setHeightMap($x, $z, $y + 1);
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return $y + 1;
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}
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/**
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* Performs basic sky light population on the chunk.
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* This does not cater for adjacent sky light, this performs direct sky light population only. This may cause some strange visual artifacts
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* if the chunk is light-populated after being terrain-populated.
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*
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* TODO: fast adjacent light spread
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*/
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public function populateSkyLight(){
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$maxY = $this->getMaxY();
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$this->setAllBlockSkyLight(0);
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for($x = 0; $x < 16; ++$x){
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for($z = 0; $z < 16; ++$z){
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$heightMap = $this->getHeightMap($x, $z);
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for($y = $maxY; $y >= $heightMap; --$y){
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$this->setBlockSkyLight($x, $y, $z, 15);
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}
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$light = 15;
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for(; $y >= 0; --$y){
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if($light > 0){
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$light -= BlockFactory::$lightFilter[$this->getBlockId($x, $y, $z)];
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if($light <= 0){
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break;
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}
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}
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$this->setBlockSkyLight($x, $y, $z, $light);
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}
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}
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}
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}
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/**
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* Returns the biome ID at the specified X/Z chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $z 0-15
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*
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* @return int 0-255
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*/
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public function getBiomeId(int $x, int $z) : int{
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return ord($this->biomeIds[($z << 4) | $x]);
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}
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/**
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* Sets the biome ID at the specified X/Z chunk block coordinates
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*
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* @param int $x 0-15
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* @param int $z 0-15
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* @param int $biomeId 0-255
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*/
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public function setBiomeId(int $x, int $z, int $biomeId){
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$this->hasChanged = true;
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$this->biomeIds[($z << 4) | $x] = chr($biomeId & 0xff);
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}
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/**
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* Returns a column of block IDs from bottom to top at the specified X/Z chunk block coordinates.
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*
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* @param int $x 0-15
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* @param int $z 0-15
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*
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* @return string
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*/
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public function getBlockIdColumn(int $x, int $z) : string{
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$result = "";
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foreach($this->subChunks as $subChunk){
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$result .= $subChunk->getBlockIdColumn($x, $z);
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}
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return $result;
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}
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/**
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* Returns a column of block meta values from bottom to top at the specified X/Z chunk block coordinates.
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*
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* @param int $x 0-15
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* @param int $z 0-15
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*
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* @return string
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*/
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public function getBlockDataColumn(int $x, int $z) : string{
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$result = "";
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foreach($this->subChunks as $subChunk){
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$result .= $subChunk->getBlockDataColumn($x, $z);
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}
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return $result;
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}
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/**
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* Returns a column of sky light values from bottom to top at the specified X/Z chunk block coordinates.
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*
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* @param int $x 0-15
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* @param int $z 0-15
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*
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* @return string
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*/
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public function getBlockSkyLightColumn(int $x, int $z) : string{
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$result = "";
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foreach($this->subChunks as $subChunk){
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$result .= $subChunk->getBlockSkyLightColumn($x, $z);
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}
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return $result;
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}
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/**
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* Returns a column of block light values from bottom to top at the specified X/Z chunk block coordinates.
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*
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* @param int $x 0-15
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* @param int $z 0-15
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*
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* @return string
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*/
|
|
public function getBlockLightColumn(int $x, int $z) : string{
|
|
$result = "";
|
|
foreach($this->subChunks as $subChunk){
|
|
$result .= $subChunk->getBlockLightColumn($x, $z);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* @return bool
|
|
*/
|
|
public function isLightPopulated() : bool{
|
|
return $this->lightPopulated;
|
|
}
|
|
|
|
/**
|
|
* @param bool $value
|
|
*/
|
|
public function setLightPopulated(bool $value = true){
|
|
$this->lightPopulated = $value;
|
|
}
|
|
|
|
/**
|
|
* @return bool
|
|
*/
|
|
public function isPopulated() : bool{
|
|
return $this->terrainPopulated;
|
|
}
|
|
|
|
/**
|
|
* @param bool $value
|
|
*/
|
|
public function setPopulated(bool $value = true){
|
|
$this->terrainPopulated = $value;
|
|
}
|
|
|
|
/**
|
|
* @return bool
|
|
*/
|
|
public function isGenerated() : bool{
|
|
return $this->terrainGenerated;
|
|
}
|
|
|
|
/**
|
|
* @param bool $value
|
|
*/
|
|
public function setGenerated(bool $value = true){
|
|
$this->terrainGenerated = $value;
|
|
}
|
|
|
|
/**
|
|
* @param Entity $entity
|
|
*/
|
|
public function addEntity(Entity $entity){
|
|
if($entity->isClosed()){
|
|
throw new \InvalidArgumentException("Attempted to add a garbage closed Entity to a chunk");
|
|
}
|
|
$this->entities[$entity->getId()] = $entity;
|
|
if(!($entity instanceof Player) and $this->isInit){
|
|
$this->hasChanged = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param Entity $entity
|
|
*/
|
|
public function removeEntity(Entity $entity){
|
|
unset($this->entities[$entity->getId()]);
|
|
if(!($entity instanceof Player) and $this->isInit){
|
|
$this->hasChanged = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param Tile $tile
|
|
*/
|
|
public function addTile(Tile $tile){
|
|
if($tile->isClosed()){
|
|
throw new \InvalidArgumentException("Attempted to add a garbage closed Tile to a chunk");
|
|
}
|
|
$this->tiles[$tile->getId()] = $tile;
|
|
if(isset($this->tileList[$index = (($tile->x & 0x0f) << 12) | (($tile->z & 0x0f) << 8) | ($tile->y & 0xff)]) and $this->tileList[$index] !== $tile){
|
|
$this->tileList[$index]->close();
|
|
}
|
|
$this->tileList[$index] = $tile;
|
|
if($this->isInit){
|
|
$this->hasChanged = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param Tile $tile
|
|
*/
|
|
public function removeTile(Tile $tile){
|
|
unset($this->tiles[$tile->getId()]);
|
|
unset($this->tileList[(($tile->x & 0x0f) << 12) | (($tile->z & 0x0f) << 8) | ($tile->y & 0xff)]);
|
|
if($this->isInit){
|
|
$this->hasChanged = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an array of entities currently using this chunk.
|
|
*
|
|
* @return Entity[]
|
|
*/
|
|
public function getEntities() : array{
|
|
return $this->entities;
|
|
}
|
|
|
|
/**
|
|
* @return Entity[]
|
|
*/
|
|
public function getSavableEntities() : array{
|
|
return array_filter($this->entities, function(Entity $entity) : bool{ return $entity->canSaveWithChunk() and !$entity->isClosed(); });
|
|
}
|
|
|
|
/**
|
|
* @return Tile[]
|
|
*/
|
|
public function getTiles() : array{
|
|
return $this->tiles;
|
|
}
|
|
|
|
/**
|
|
* Returns the tile at the specified chunk block coordinates, or null if no tile exists.
|
|
*
|
|
* @param int $x 0-15
|
|
* @param int $y
|
|
* @param int $z 0-15
|
|
*
|
|
* @return Tile|null
|
|
*/
|
|
public function getTile(int $x, int $y, int $z){
|
|
$index = ($x << 12) | ($z << 8) | $y;
|
|
return $this->tileList[$index] ?? null;
|
|
}
|
|
|
|
/**
|
|
* Called when the chunk is unloaded, closing entities and tiles.
|
|
*/
|
|
public function onUnload() : void{
|
|
foreach($this->getEntities() as $entity){
|
|
if($entity instanceof Player){
|
|
continue;
|
|
}
|
|
$entity->close();
|
|
}
|
|
|
|
foreach($this->getTiles() as $tile){
|
|
$tile->close();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Deserializes tiles and entities from NBT
|
|
*
|
|
* @param Level $level
|
|
*/
|
|
public function initChunk(Level $level){
|
|
if(!$this->isInit){
|
|
$changed = false;
|
|
|
|
$level->timings->syncChunkLoadEntitiesTimer->startTiming();
|
|
foreach($this->NBTentities as $nbt){
|
|
if($nbt instanceof CompoundTag){
|
|
if(!$nbt->hasTag("id")){ //allow mixed types (because of leveldb)
|
|
$changed = true;
|
|
continue;
|
|
}
|
|
|
|
try{
|
|
$entity = Entity::createEntity($nbt->getTag("id")->getValue(), $level, $nbt);
|
|
if(!($entity instanceof Entity)){
|
|
$changed = true;
|
|
continue;
|
|
}
|
|
}catch(\Throwable $t){
|
|
$level->getServer()->getLogger()->logException($t);
|
|
$changed = true;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
$this->NBTentities = [];
|
|
$level->timings->syncChunkLoadEntitiesTimer->stopTiming();
|
|
|
|
$level->timings->syncChunkLoadTileEntitiesTimer->startTiming();
|
|
foreach($this->NBTtiles as $nbt){
|
|
if($nbt instanceof CompoundTag){
|
|
if(!$nbt->hasTag(Tile::TAG_ID, StringTag::class)){
|
|
$changed = true;
|
|
continue;
|
|
}
|
|
|
|
if(Tile::createTile($nbt->getString(Tile::TAG_ID), $level, $nbt) === null){
|
|
$changed = true;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
$this->NBTtiles = [];
|
|
$level->timings->syncChunkLoadTileEntitiesTimer->stopTiming();
|
|
|
|
$this->hasChanged = $changed;
|
|
|
|
$this->isInit = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
public function getBiomeIdArray() : string{
|
|
return $this->biomeIds;
|
|
}
|
|
|
|
/**
|
|
* @return int[]
|
|
*/
|
|
public function getHeightMapArray() : array{
|
|
return $this->heightMap->toArray();
|
|
}
|
|
|
|
/**
|
|
* @return bool
|
|
*/
|
|
public function hasChanged() : bool{
|
|
return $this->hasChanged;
|
|
}
|
|
|
|
/**
|
|
* @param bool $value
|
|
*/
|
|
public function setChanged(bool $value = true){
|
|
$this->hasChanged = $value;
|
|
}
|
|
|
|
/**
|
|
* Returns the subchunk at the specified subchunk Y coordinate, or an empty, unmodifiable stub if it does not exist or the coordinate is out of range.
|
|
*
|
|
* @param int $y
|
|
* @param bool $generateNew Whether to create a new, modifiable subchunk if there is not one in place
|
|
*
|
|
* @return SubChunkInterface
|
|
*/
|
|
public function getSubChunk(int $y, bool $generateNew = false) : SubChunkInterface{
|
|
if($y < 0 or $y >= $this->height){
|
|
return $this->emptySubChunk;
|
|
}elseif($generateNew and $this->subChunks[$y] instanceof EmptySubChunk){
|
|
$this->subChunks[$y] = new SubChunk();
|
|
}
|
|
|
|
return $this->subChunks[$y];
|
|
}
|
|
|
|
/**
|
|
* Sets a subchunk in the chunk index
|
|
*
|
|
* @param int $y
|
|
* @param SubChunkInterface|null $subChunk
|
|
* @param bool $allowEmpty Whether to check if the chunk is empty, and if so replace it with an empty stub
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function setSubChunk(int $y, SubChunkInterface $subChunk = null, bool $allowEmpty = false) : bool{
|
|
if($y < 0 or $y >= $this->height){
|
|
return false;
|
|
}
|
|
if($subChunk === null or ($subChunk->isEmpty() and !$allowEmpty)){
|
|
$this->subChunks[$y] = $this->emptySubChunk;
|
|
}else{
|
|
$this->subChunks[$y] = $subChunk;
|
|
}
|
|
$this->hasChanged = true;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @return \SplFixedArray|SubChunkInterface[]
|
|
*/
|
|
public function getSubChunks() : \SplFixedArray{
|
|
return $this->subChunks;
|
|
}
|
|
|
|
/**
|
|
* Returns the Y coordinate of the highest non-empty subchunk in this chunk.
|
|
*
|
|
* @return int
|
|
*/
|
|
public function getHighestSubChunkIndex() : int{
|
|
for($y = $this->subChunks->count() - 1; $y >= 0; --$y){
|
|
if($this->subChunks[$y] instanceof EmptySubChunk){
|
|
//No need to thoroughly prune empties at runtime, this will just reduce performance.
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return $y;
|
|
}
|
|
|
|
/**
|
|
* Returns the count of subchunks that need sending to players
|
|
*
|
|
* @return int
|
|
*/
|
|
public function getSubChunkSendCount() : int{
|
|
return $this->getHighestSubChunkIndex() + 1;
|
|
}
|
|
|
|
/**
|
|
* Disposes of empty subchunks and frees data where possible
|
|
*/
|
|
public function collectGarbage() : void{
|
|
foreach($this->subChunks as $y => $subChunk){
|
|
if($subChunk instanceof SubChunk){
|
|
if($subChunk->isEmpty()){
|
|
$this->subChunks[$y] = $this->emptySubChunk;
|
|
}else{
|
|
$subChunk->collectGarbage();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Serializes the chunk for sending to players
|
|
*
|
|
* @return string
|
|
*/
|
|
public function networkSerialize() : string{
|
|
$result = "";
|
|
$subChunkCount = $this->getSubChunkSendCount();
|
|
for($y = 0; $y < $subChunkCount; ++$y){
|
|
$result .= $this->subChunks[$y]->networkSerialize();
|
|
}
|
|
$result .= $this->biomeIds . chr(0); //border block array count
|
|
//Border block entry format: 1 byte (4 bits X, 4 bits Z). These are however useless since they crash the regular client.
|
|
|
|
foreach($this->tiles as $tile){
|
|
if($tile instanceof Spawnable){
|
|
$result .= $tile->getSerializedSpawnCompound();
|
|
}
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Fast-serializes the chunk for passing between threads
|
|
* TODO: tiles and entities
|
|
*
|
|
* @return string
|
|
*/
|
|
public function fastSerialize() : string{
|
|
$stream = new BinaryStream();
|
|
$stream->putInt($this->x);
|
|
$stream->putInt($this->z);
|
|
$stream->putByte(($this->lightPopulated ? 4 : 0) | ($this->terrainPopulated ? 2 : 0) | ($this->terrainGenerated ? 1 : 0));
|
|
if($this->terrainGenerated){
|
|
//subchunks
|
|
$count = 0;
|
|
$subChunks = "";
|
|
foreach($this->subChunks as $y => $subChunk){
|
|
if($subChunk instanceof EmptySubChunk){
|
|
continue;
|
|
}
|
|
++$count;
|
|
$subChunks .= chr($y) . $subChunk->getBlockIdArray() . $subChunk->getBlockDataArray();
|
|
if($this->lightPopulated){
|
|
$subChunks .= $subChunk->getBlockSkyLightArray() . $subChunk->getBlockLightArray();
|
|
}
|
|
}
|
|
$stream->putByte($count);
|
|
$stream->put($subChunks);
|
|
|
|
//biomes
|
|
$stream->put($this->biomeIds);
|
|
if($this->lightPopulated){
|
|
$stream->put(pack("v*", ...$this->heightMap));
|
|
}
|
|
}
|
|
|
|
return $stream->getBuffer();
|
|
}
|
|
|
|
/**
|
|
* Deserializes a fast-serialized chunk
|
|
*
|
|
* @param string $data
|
|
*
|
|
* @return Chunk
|
|
*/
|
|
public static function fastDeserialize(string $data) : Chunk{
|
|
$stream = new BinaryStream($data);
|
|
|
|
$x = $stream->getInt();
|
|
$z = $stream->getInt();
|
|
$flags = $stream->getByte();
|
|
$lightPopulated = (bool) ($flags & 4);
|
|
$terrainPopulated = (bool) ($flags & 2);
|
|
$terrainGenerated = (bool) ($flags & 1);
|
|
|
|
$subChunks = [];
|
|
$biomeIds = "";
|
|
$heightMap = [];
|
|
if($terrainGenerated){
|
|
$count = $stream->getByte();
|
|
for($y = 0; $y < $count; ++$y){
|
|
$subChunks[$stream->getByte()] = new SubChunk(
|
|
$stream->get(4096), //blockids
|
|
$stream->get(2048), //blockdata
|
|
$lightPopulated ? $stream->get(2048) : "", //skylight
|
|
$lightPopulated ? $stream->get(2048) : "" //blocklight
|
|
);
|
|
}
|
|
|
|
$biomeIds = $stream->get(256);
|
|
if($lightPopulated){
|
|
$heightMap = array_values(unpack("v*", $stream->get(512)));
|
|
}
|
|
}
|
|
|
|
$chunk = new Chunk($x, $z, $subChunks, [], [], $biomeIds, $heightMap);
|
|
$chunk->setGenerated($terrainGenerated);
|
|
$chunk->setPopulated($terrainPopulated);
|
|
$chunk->setLightPopulated($lightPopulated);
|
|
|
|
return $chunk;
|
|
}
|
|
}
|