LevitationEffect.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\player\Player;
 
class LevitationEffect extends Effect{
 
    public function canTick(EffectInstance $instance) : bool{
        return true;
    }
 
    public function applyEffect(Living $entity, EffectInstance $instance, float $potency = 1.0, ?Entity $source = null) : void{
        if(!($entity instanceof Player)){ //TODO: ugly hack, player motion isn't updated properly by the server yet :(
            $entity->addMotion(0, ($instance->getEffectLevel() / 20 - $entity->getMotion()->y) / 5, 0);
        }
    }
 
    public function add(Living $entity, EffectInstance $instance) : void{
        $entity->setHasGravity(false);
    }
 
    public function remove(Living $entity, EffectInstance $instance) : void{
        $entity->setHasGravity();
    }
}