DimensionDataPacket.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\VarInt;
use pocketmine\network\mcpe\protocol\serializer\CommonTypes;
use pocketmine\network\mcpe\protocol\types\DimensionData;
use pocketmine\network\mcpe\protocol\types\DimensionNameIds;
use function count;
 
class DimensionDataPacket extends DataPacket implements ClientboundPacket{
    public const NETWORK_ID = ProtocolInfo::DIMENSION_DATA_PACKET;
 
    private array $definitions;
 
    public static function create(array $definitions) : self{
        $result = new self;
        $result->definitions = $definitions;
        return $result;
    }
 
    public function getDefinitions() : array{ return $this->definitions; }
 
    protected function decodePayload(ByteBufferReader $in) : void{
        $this->definitions = [];
 
        for($i = 0, $count = VarInt::readUnsignedInt($in); $i < $count; $i++){
            $dimensionNameId = CommonTypes::getString($in);
            $dimensionData = DimensionData::read($in);
 
            if(isset($this->definitions[$dimensionNameId])){
                throw new PacketDecodeException("Repeated dimension data for key \"$dimensionNameId\"");
            }
            if($dimensionNameId !== DimensionNameIds::OVERWORLD && $dimensionNameId !== DimensionNameIds::NETHER && $dimensionNameId !== DimensionNameIds::THE_END){
                throw new PacketDecodeException("Invalid dimension name ID \"$dimensionNameId\"");
            }
            $this->definitions[$dimensionNameId] = $dimensionData;
        }
    }
 
    protected function encodePayload(ByteBufferWriter $out) : void{
        VarInt::writeUnsignedInt($out, count($this->definitions));
 
        foreach($this->definitions as $dimensionNameId => $definition){
            CommonTypes::putString($out, (string) $dimensionNameId); //@phpstan-ignore-line
            $definition->write($out);
        }
    }
 
    public function handle(PacketHandlerInterface $handler) : bool{
        return $handler->handleDimensionData($this);
    }
}