DragonEggTeleportParticle.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program 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.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\world\particle;
 
use pocketmine\math\Vector3;
use pocketmine\network\mcpe\protocol\LevelEventPacket;
use pocketmine\network\mcpe\protocol\types\LevelEvent;
use function abs;
 
class DragonEggTeleportParticle implements Particle{
 
    private int $xDiff;
    private int $yDiff;
    private int $zDiff;
 
    public function __construct(int $xDiff, int $yDiff, int $zDiff){
        $this->xDiff = self::boundOrThrow($xDiff);
        $this->yDiff = self::boundOrThrow($yDiff);
        $this->zDiff = self::boundOrThrow($zDiff);
    }
 
    private static function boundOrThrow(int $v) : int{
        if($v < -255 || $v > 255){
            throw new \InvalidArgumentException("Value must be between -255 and 255");
        }
        return $v;
    }
 
    public function encode(Vector3 $pos) : array{
        $data = ($this->zDiff < 0 ? 1 << 26 : 0) |
            ($this->yDiff < 0 ? 1 << 25 : 0) |
            ($this->xDiff < 0 ? 1 << 24 : 0) |
            (abs($this->xDiff) << 16) |
            (abs($this->yDiff) << 8) |
            abs($this->zDiff);
 
        return [LevelEventPacket::create(LevelEvent::PARTICLE_DRAGON_EGG_TELEPORT, $data, $pos)];
    }
}