particle.php

<?php

/**
 * @name Particle
 * @version 1.0.0
 * @main PJZ9n\Particle\Main
 * @api 3.0.0
 */

declare(strict_types=1);

namespace PJZ9n\Particle;

use pocketmine\event\Listener;
use pocketmine\event\player\PlayerMoveEvent;
use pocketmine\level\particle\DustParticle;
use pocketmine\level\particle\HeartParticle;
use pocketmine\math\Vector3;
use pocketmine\plugin\PluginBase;

class Main extends PluginBase implements Listener
{
    
    /** @var int Tick */
    private $last;
    
    public function onEnable(): void
    {
        $this->last = $this->getServer()->getTick();
        $this->getServer()->getPluginManager()->registerEvents($this, $this);
    }
    
    public function onPlayerMove(PlayerMoveEvent $event): void
    {
        if ($this->getServer()->getTick() - $this->last > 20) {
            $this->last = $this->getServer()->getTick();
            $player = $event->getPlayer();
            $level = $player->getLevel();
            //$levelはLevel(ワールド)オブジェクトとし、$playerはプレイヤーオブジェクトとします
            $x = $player->x;
            $y = $player->y;
            $z = $player->z;
            $center = new Vector3($x, $y, $z); //プレイヤーの座標 ($player->asVector3() でもよい)
            $radius = 0.5;
            $count = 100;
            //$particle = new DustParticle($center, mt_rand(), mt_rand(), mt_rand(), mt_rand()); //ランダムな色を発生
            $particle = new HeartParticle($center);
            for ($yaw = 0, $y = $center->y; $y < $center->y + 4; $yaw += (M_PI * 2) / 20, $y += 1 / 20) {
                $x = -sin($yaw) + $center->x;
                $z = cos($yaw) + $center->z;
                $particle->setComponents($x, $y, $z);
                $level->addParticle($particle); //パーティクル発生
            }
        }
    }
    
}