TransactionData.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\types\inventory;
 
use pmmp\encoding\ByteBufferReader;
use pmmp\encoding\ByteBufferWriter;
use pmmp\encoding\DataDecodeException;
use pmmp\encoding\VarInt;
use pocketmine\network\mcpe\protocol\PacketDecodeException;
use function count;
 
abstract class TransactionData{
    protected array $actions = [];
 
    final public function getActions() : array{
        return $this->actions;
    }
 
    abstract public function getTypeId() : int;
 
    final public function decode(ByteBufferReader $in) : void{
        $actionCount = VarInt::readUnsignedInt($in);
        for($i = 0; $i < $actionCount; ++$i){
            $this->actions[] = (new NetworkInventoryAction())->read($in);
        }
        $this->decodeData($in);
    }
 
    abstract protected function decodeData(ByteBufferReader $in) : void;
 
    final public function encode(ByteBufferWriter $out) : void{
        VarInt::writeUnsignedInt($out, count($this->actions));
        foreach($this->actions as $action){
            $action->write($out);
        }
        $this->encodeData($out);
    }
 
    abstract protected function encodeData(ByteBufferWriter $out) : void;
}