<?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\utils;

trait AnalogRedstoneSignalEmitterTrait{
	protected int $signalStrength = 0;

	protected function decodeState(BlockDataReader $r) : void{
		$this->signalStrength = $r->readBoundedInt(4, 0, 15);
	}

	protected function encodeState(BlockDataWriter $w) : void{
		$w->writeInt(4, $this->signalStrength);
	}

	public function getOutputSignalStrength() : int{ return $this->signalStrength; }

	/** @return $this */
	public function setOutputSignalStrength(int $signalStrength) : self{
		if($signalStrength < 0 || $signalStrength > 15){
			throw new \InvalidArgumentException("Signal strength must be in range 0-15");
		}
		$this->signalStrength = $signalStrength;
		return $this;
	}
}