DropItemAction.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\inventory\transaction\action;
 
use pocketmine\event\player\PlayerDropItemEvent;
use pocketmine\inventory\transaction\TransactionValidationException;
use pocketmine\item\Item;
use pocketmine\item\VanillaItems;
use pocketmine\player\Player;
 
class DropItemAction extends InventoryAction{
 
    public function __construct(Item $targetItem){
        parent::__construct(VanillaItems::AIR(), $targetItem);
    }
 
    public function validate(Player $source) : void{
        if($this->targetItem->isNull()){
            throw new TransactionValidationException("Cannot drop an empty itemstack");
        }
        if($this->targetItem->getCount() > $this->targetItem->getMaxStackSize()){
            throw new TransactionValidationException("Target item exceeds item type max stack size");
        }
    }
 
    public function onPreExecute(Player $source) : bool{
        $ev = new PlayerDropItemEvent($source, $this->targetItem);
        if($source->isSpectator()){
            $ev->cancel();
        }
        $ev->call();
        if($ev->isCancelled()){
            return false;
        }
 
        return true;
    }
 
    public function execute(Player $source) : void{
        $source->dropItem($this->targetItem);
    }
}