PositionTrackingDBServerBroadcastPacket.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\Byte;
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\CacheableNbt;
 
class PositionTrackingDBServerBroadcastPacket extends DataPacket implements ClientboundPacket{
    public const NETWORK_ID = ProtocolInfo::POSITION_TRACKING_D_B_SERVER_BROADCAST_PACKET;
 
    public const ACTION_UPDATE = 0;
    public const ACTION_DESTROY = 1;
    public const ACTION_NOT_FOUND = 2;
 
    private int $action;
    private int $trackingId;
    private CacheableNbt $nbt;
 
    public static function create(int $action, int $trackingId, CacheableNbt $nbt) : self{
        $result = new self;
        $result->action = $action;
        $result->trackingId = $trackingId;
        $result->nbt = $nbt;
        return $result;
    }
 
    public function getAction() : int{ return $this->action; }
 
    public function getTrackingId() : int{ return $this->trackingId; }
 
    public function getNbt() : CacheableNbt{ return $this->nbt; }
 
    protected function decodePayload(ByteBufferReader $in) : void{
        $this->action = Byte::readUnsigned($in);
        $this->trackingId = VarInt::readSignedInt($in);
        $this->nbt = new CacheableNbt(CommonTypes::getNbtCompoundRoot($in));
    }
 
    protected function encodePayload(ByteBufferWriter $out) : void{
        Byte::writeUnsigned($out, $this->action);
        VarInt::writeSignedInt($out, $this->trackingId);
        $out->writeByteArray($this->nbt->getEncodedNbt());
    }
 
    public function handle(PacketHandlerInterface $handler) : bool{
        return $handler->handlePositionTrackingDBServerBroadcast($this);
    }
}