TransactionListener.php

<?php

/**
 * Copyright (c) 2020 PJZ9n.
 *
 * This file is part of NewChestShop.
 *
 * NewChestShop is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * NewChestShop is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with NewChestShop. If not, see <http://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace pjz9n\newchestshop;

use pocketmine\event\inventory\InventoryTransactionEvent;
use pocketmine\event\Listener;
use pocketmine\inventory\ChestInventory;
use pocketmine\inventory\PlayerCursorInventory;
use pocketmine\inventory\transaction\action\SlotChangeAction;
use pocketmine\inventory\transaction\TransactionValidationException;

class TransactionListener implements Listener
{
    public function onInventoryTransaction(InventoryTransactionEvent $event): void
    {
        $tra = $event->getTransaction();
        try {
            $tra->validate();//TODO
        } catch (TransactionValidationException $exception) {
            return;
        }
        if (count($tra->getActions()) !== 2) {
            //TODO
            return;
        }
        //プレイヤーの取得
        $player = null;
        foreach ($tra->getActions() as $act) {
            if ($act instanceof SlotChangeAction) {
                $pinv = $act->getInventory();
                if ($pinv instanceof PlayerCursorInventory) {
                    $player = $pinv->getHolder();
                    break;
                }
            }
        }
        //インベントリから取ったアイテムを取得
        if ($player !== null) {
            foreach ($tra->getActions() as $act) {
                if ($act instanceof SlotChangeAction) {
                    $inv = $act->getInventory();
                    if ($inv instanceof ChestInventory) {
                        $calledEvent = new PlayerChestInventoryChangeEvent($pinv, $inv, $act->getSourceItem(), $act->getTargetItem());
                        $calledEvent->call();
                        $event->setCancelled($calledEvent->isCancelled());
                        break;
                    }
                }
            }
        }
    }
}