InvMenuListenerTest.php

<?php

declare(strict_types=1);

/**
 * @name InvMenuListenerTest
 * @main muqsit\imtest\InvMenuListenerTest
 * @version 0.0.1
 * @api 3.0.0
 */

namespace muqsit\imtest{

	use muqsit\invmenu\InvMenu;
	use muqsit\invmenu\InvMenuHandler;
	use muqsit\invmenu\transaction\DeterministicInvMenuTransaction;
	use pocketmine\command\Command;
	use pocketmine\command\CommandSender;
	use pocketmine\command\PluginCommand;
	use pocketmine\item\Item;
	use pocketmine\item\ItemIds;
	use pocketmine\Player;
	use pocketmine\plugin\PluginBase;

	final class InvMenuListenerTest extends PluginBase{

		public function onEnable() : void{
			if(!InvMenuHandler::isRegistered()){
				InvMenuHandler::register($this);
			}

			$command = new PluginCommand("imtest", $this);
			$command->setExecutor($this);
			$this->getServer()->getCommandMap()->register($this->getName(), $command);
		}

		public function onCommand(CommandSender $sender, Command $command, string $label, array $args) : bool{
			if($sender instanceof Player){
				new Gui($sender);
			}
			return true;
		}
	}

	final class Gui{

		public function __construct(Player $player){
			echo "Lottery Construct";
			$this->chest = InvMenu::create(InvMenu::TYPE_CHEST);
			$this->chest->setName("Click the diamond!");
			$this->chest->setListener(InvMenu::readonly(function(DeterministicInvMenuTransaction $transaction) : void{
				echo "This Listener Runs";
				$player = $transaction->getPlayer();
				$itemTakenOut = $transaction->getOut();/*$transaction->getItemClicked();*/ // or $transaction->getOut();

				if($itemTakenOut->getId() === ItemIds::DIAMOND){
					$player->removeWindow($transaction->getAction()->getInventory());
					// on PocketMine-MP API 3, use:
					//     $player->removeWindow($transaction->getAction()->getInventory());
					$player->sendMessage("Hello, world!");
				}
			}));
			$this->chest->getInventory()->addItem(Item::get(ItemIds::DIAMOND));

			/** @var Player $player */
			$this->chest->send($player);
		}
	}
}