<?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\block;

use pocketmine\block\utils\BlockDataValidator;
use pocketmine\math\Facing;

class WallSign extends SignPost{

	/** @var int */
	protected $facing = Facing::NORTH;

	protected function writeStateToMeta() : int{
		return $this->facing;
	}

	public function readStateFromData(int $id, int $stateMeta) : void{
		$this->facing = BlockDataValidator::readHorizontalFacing($stateMeta);
	}

	public function getStateBitmask() : int{
		return 0b111;
	}

	public function onNearbyBlockChange() : void{
		if($this->getSide(Facing::opposite($this->facing))->getId() === self::AIR){
			$this->getLevel()->useBreakOn($this);
		}
	}
}