PocketMine-MP  1.4 - API 1.10.0
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Random.php
1 <?php
2 
3 /*
4  *
5  * ____ _ _ __ __ _ __ __ ____
6  * | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
7  * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
8  * | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
9  * |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
10  *
11  * This program is free software: you can redistribute it and/or modify
12  * it under the terms of the GNU Lesser General Public License as published by
13  * the Free Software Foundation, either version 3 of the License, or
14  * (at your option) any later version.
15  *
16  * @author PocketMine Team
17  * @link http://www.pocketmine.net/
18  *
19  *
20 */
21 
22 namespace pocketmine\utils;
23 
24 
30 class Random{
31 
32  protected $seed;
33 
37  public function __construct($seed = -1){
38  if($seed == -1){
39  $seed = time();
40  }
41 
42  $this->setSeed($seed);
43  }
44 
48  public function setSeed($seed){
49  $this->seed = crc32(pack("N", $seed));
50  }
51 
57  public function nextInt(){
58  return $this->nextSignedInt() & 0x7fffffff;
59  }
60 
66  public function nextSignedInt(){
67  $t = crc32(pack("N", $this->seed));
68  $this->seed ^= $t;
69 
70  if(PHP_INT_SIZE === 8){
71  return $t << 32 >> 32;
72  }else{
73  return $t;
74  }
75  }
76 
82  public function nextFloat(){
83  return $this->nextInt() / 0x7fffffff;
84  }
85 
91  public function nextSignedFloat(){
92  return $this->nextSignedInt() / 0x7fffffff;
93  }
94 
100  public function nextBoolean(){
101  return ($this->nextSignedInt() & 0x01) === 0;
102  }
103 
112  public function nextRange($start = 0, $end = 0x7fffffff){
113  return $start + ($this->nextInt() % ($end + 1 - $start));
114  }
115 
116 }
nextRange($start=0, $end=0x7fffffff)
Definition: Random.php:112
__construct($seed=-1)
Definition: Random.php:37