NetworkChunkPublisherUpdatePacket.php

<?php
 
/*
 * This file is part of BedrockProtocol.
 * Copyright (C) 2014-2022 PocketMine Team <https://github.com/pmmp/BedrockProtocol>
 *
 * BedrockProtocol is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 */
 
declare(strict_types=1);
 
namespace pocketmine\network\mcpe\protocol;
 
use pmmp\encoding\ByteBufferReader;
use pmmp\encoding\ByteBufferWriter;
use pmmp\encoding\LE;
use pmmp\encoding\VarInt;
use pocketmine\network\mcpe\protocol\serializer\CommonTypes;
use pocketmine\network\mcpe\protocol\types\BlockPosition;
use pocketmine\network\mcpe\protocol\types\ChunkPosition;
use function count;
 
class NetworkChunkPublisherUpdatePacket extends DataPacket implements ClientboundPacket{
    public const NETWORK_ID = ProtocolInfo::NETWORK_CHUNK_PUBLISHER_UPDATE_PACKET;
 
    public BlockPosition $blockPosition;
    public int $radius;
    public array $savedChunks = [];
 
    public const MAX_SAVED_CHUNKS = 9216;
 
    public static function create(BlockPosition $blockPosition, int $radius, array $savedChunks) : self{
        $result = new self;
        $result->blockPosition = $blockPosition;
        $result->radius = $radius;
        $result->savedChunks = $savedChunks;
        return $result;
    }
 
    protected function decodePayload(ByteBufferReader $in) : void{
        $this->blockPosition = CommonTypes::getSignedBlockPosition($in);
        $this->radius = VarInt::readUnsignedInt($in);
 
        $count = LE::readUnsignedInt($in);
        if($count > self::MAX_SAVED_CHUNKS){
            throw new PacketDecodeException("Expected at most " . self::MAX_SAVED_CHUNKS . " saved chunks, got " . $count);
        }
        for($i = 0, $this->savedChunks = []; $i < $count; $i++){
            $this->savedChunks[] = ChunkPosition::read($in);
        }
    }
 
    protected function encodePayload(ByteBufferWriter $out) : void{
        CommonTypes::putSignedBlockPosition($out, $this->blockPosition);
        VarInt::writeUnsignedInt($out, $this->radius);
 
        LE::writeUnsignedInt($out, count($this->savedChunks));
        foreach($this->savedChunks as $chunk){
            $chunk->write($out);
        }
    }
 
    public function handle(PacketHandlerInterface $handler) : bool{
        return $handler->handleNetworkChunkPublisherUpdate($this);
    }
}