InstantDamageEffect.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\entity\effect;
 
use pocketmine\entity\Entity;
use pocketmine\entity\Living;
use pocketmine\event\entity\EntityDamageByChildEntityEvent;
use pocketmine\event\entity\EntityDamageByEntityEvent;
use pocketmine\event\entity\EntityDamageEvent;
 
class InstantDamageEffect extends InstantEffect{
 
    public function applyEffect(Living $entity, EffectInstance $instance, float $potency = 1.0, ?Entity $source = null) : void{
        //TODO: add particles (witch spell)
        $damage = (6 << $instance->getAmplifier()) * $potency;
        if($source !== null){
            $sourceOwner = $source->getOwningEntity();
            if($sourceOwner !== null){
                $ev = new EntityDamageByChildEntityEvent($sourceOwner, $source, $entity, EntityDamageEvent::CAUSE_MAGIC, $damage);
            }else{
                $ev = new EntityDamageByEntityEvent($source, $entity, EntityDamageEvent::CAUSE_MAGIC, $damage);
            }
        }else{
            $ev = new EntityDamageEvent($entity, EntityDamageEvent::CAUSE_MAGIC, $damage);
        }
        $entity->attack($ev);
    }
}