PocketMine-MP/src/utils/Random.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/
 * 
 *
*/


//Unsecure, not used for "Real Randomness"
class Random{
	private $random;
	public function __construct($seed = false){
		$this->random = new twister(0);
		$this->setSeed($seed);
	}
	
	public function setSeed($seed = false){
		$this->random->init_with_integer($seed !== false ? (int) $seed:Utils::readInt(Utils::getRandomBytes(4, false)));
	}
	
	public function nextInt(){
		return $this->random->int32();
	}
	
	public function nextFloat(){
		return $this->random->real_closed();
	}
	
	public function nextBytes($byteCount){
		$bytes = "";
		for($i = 0; $i < $byteCount; ++$i){
			$bytes .= chr($this->random->rangeint(0, 0xFF));
		}
		return $bytes;
	}
	
	public function nextBoolean(){
		return $this->random->rangeint(0, 1) === 1;
	}
	
	public function nextRange($start = 0, $end = PHP_INT_MAX){
		return $this->random->rangeint($start, $end);
	}

}