SubChunkPositionOffset.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;
 
use pocketmine\network\mcpe\protocol\serializer\PacketSerializer;
use pocketmine\utils\Binary;
use pocketmine\utils\Limits;
 
final class SubChunkPositionOffset{
 
    public function __construct(
        private int $xOffset,
        private int $yOffset,
        private int $zOffset,
    ){
        self::clampOffset($this->xOffset);
        self::clampOffset($this->yOffset);
        self::clampOffset($this->zOffset);
    }
 
    private static function clampOffset(int $v) : void{
        if($v < Limits::INT8_MIN || $v > Limits::INT8_MAX){
            throw new \InvalidArgumentException("Offsets must be within the range of a byte (" . Limits::INT8_MIN . " ... " . Limits::INT8_MAX . ")");
        }
    }
 
    public function getXOffset() : int{ return $this->xOffset; }
 
    public function getYOffset() : int{ return $this->yOffset; }
 
    public function getZOffset() : int{ return $this->zOffset; }
 
    public static function read(PacketSerializer $in) : self{
        $xOffset = Binary::signByte($in->getByte());
        $yOffset = Binary::signByte($in->getByte());
        $zOffset = Binary::signByte($in->getByte());
 
        return new self($xOffset, $yOffset, $zOffset);
    }
 
    public function write(PacketSerializer $out) : void{
        $out->putByte($this->xOffset);
        $out->putByte($this->yOffset);
        $out->putByte($this->zOffset);
    }
}