|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* Created by Gorlum 17.02.2018 23:55 |
|
4
|
|
|
*/ |
|
5
|
|
|
|
|
6
|
|
|
namespace Common; |
|
7
|
|
|
|
|
8
|
|
|
/** |
|
9
|
|
|
* Class OutcomeManager |
|
10
|
|
|
* |
|
11
|
|
|
* Manage outcomes for a bunch of random cases |
|
12
|
|
|
* |
|
13
|
|
|
* @package Common |
|
14
|
|
|
*/ |
|
15
|
|
|
class OutcomeManager implements \Countable { |
|
16
|
|
|
|
|
17
|
|
|
/** |
|
18
|
|
|
* Possible outcomes |
|
19
|
|
|
* |
|
20
|
|
|
* @var array $outcomes |
|
21
|
|
|
*/ |
|
22
|
|
|
protected $outcomes = []; |
|
23
|
|
|
|
|
24
|
|
|
/** |
|
25
|
|
|
* Chances for outcome to roll |
|
26
|
|
|
* |
|
27
|
|
|
* @var int[] $chances |
|
28
|
|
|
*/ |
|
29
|
|
|
protected $chances = []; |
|
30
|
|
|
|
|
31
|
|
|
|
|
32
|
|
|
public function __construct() { |
|
33
|
|
|
} |
|
34
|
|
|
|
|
35
|
|
|
/** |
|
36
|
|
|
* Roll element from predefined array |
|
37
|
|
|
* |
|
38
|
|
|
* @param iterable $iterable - [P_CHANCE => (int), ...(payload)] |
|
39
|
|
|
* |
|
40
|
|
|
* @return mixed|null |
|
41
|
|
|
*/ |
|
42
|
|
|
public static function rollArray($iterable) { |
|
43
|
|
|
$manager = new static(); |
|
44
|
|
|
if (!is_iterable($iterable) || empty($iterable)) { |
|
45
|
|
|
return null; |
|
46
|
|
|
} |
|
47
|
|
|
|
|
48
|
|
|
foreach ($iterable as $element) { |
|
49
|
|
|
if (!is_array($element) || empty($element[P_CHANCE])) { |
|
50
|
|
|
continue; |
|
51
|
|
|
} |
|
52
|
|
|
$manager->add($element, $element[P_CHANCE]); |
|
53
|
|
|
} |
|
54
|
|
|
|
|
55
|
|
|
return $manager->rollOutcome(); |
|
56
|
|
|
} |
|
57
|
|
|
|
|
58
|
|
|
/** |
|
59
|
|
|
* Adds outcome to internal array |
|
60
|
|
|
* |
|
61
|
|
|
* @param mixed $outcome - Outcome which can be selected |
|
62
|
|
|
* @param int $chance - Chance of this particular outcome. Should be integer. Sum of all chances can be above mt_getrandmax() |
|
63
|
|
|
*/ |
|
64
|
|
|
public function add($outcome, $chance) { |
|
65
|
|
|
$this->outcomes[] = $outcome; |
|
66
|
|
|
$this->chances[] = $chance; |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
|
|
/** |
|
70
|
|
|
* Removed outcome from list |
|
71
|
|
|
* |
|
72
|
|
|
* @param mixed $outcome - Outcome to be removed |
|
73
|
|
|
* @param bool|null $strict - Strict search flag |
|
74
|
|
|
*/ |
|
75
|
|
|
public function remove($outcome, $strict = null) { |
|
76
|
|
|
if (($index = array_search($outcome, $this->outcomes, $strict)) !== false) { |
|
77
|
|
|
unset($this->outcomes[$index]); |
|
78
|
|
|
unset($this->chances[$index]); |
|
79
|
|
|
} |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
|
|
|
|
83
|
|
|
/** |
|
84
|
|
|
* Get max range of all current outcomes to use as maximum in mt_rand() |
|
85
|
|
|
* |
|
86
|
|
|
* @return float|int |
|
87
|
|
|
*/ |
|
88
|
|
|
public function getMaxRange() { |
|
89
|
|
|
return array_sum($this->chances); |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
|
|
/** |
|
93
|
|
|
* Get outcome by rolled chance |
|
94
|
|
|
* |
|
95
|
|
|
* @param int $rolled - Rolled chance |
|
96
|
|
|
* |
|
97
|
|
|
* @return mixed|null - (null) if no outcomes |
|
98
|
|
|
*/ |
|
99
|
|
|
public function getOutcome($rolled) { |
|
100
|
|
|
foreach ($this->chances as $index => $chance) { |
|
101
|
|
|
if ($chance <= $rolled) { |
|
102
|
|
|
break; |
|
103
|
|
|
} |
|
104
|
|
|
$rolled -= $chance; |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
return array_key_exists($index, $this->outcomes) ? $this->outcomes[$index] : null; |
|
|
|
|
|
|
108
|
|
|
} |
|
109
|
|
|
|
|
110
|
|
|
/** |
|
111
|
|
|
* All-in-one function |
|
112
|
|
|
* |
|
113
|
|
|
* Code can use this function if it don't want to know what number was rolled |
|
114
|
|
|
* |
|
115
|
|
|
* @return mixed|null |
|
116
|
|
|
*/ |
|
117
|
|
|
public function rollOutcome() { |
|
118
|
|
|
return $this->getOutcome(mt_rand(1, $this->getMaxRange())); |
|
119
|
|
|
} |
|
120
|
|
|
|
|
121
|
|
|
/** |
|
122
|
|
|
* Count elements of an object |
|
123
|
|
|
* @link http://php.net/manual/en/countable.count.php |
|
124
|
|
|
* @return int The custom count as an integer. |
|
125
|
|
|
* </p> |
|
126
|
|
|
* <p> |
|
127
|
|
|
* The return value is cast to an integer. |
|
128
|
|
|
* @since 5.1.0 |
|
129
|
|
|
*/ |
|
130
|
|
|
public function count() { |
|
131
|
|
|
return count($this->outcomes); |
|
132
|
|
|
} |
|
133
|
|
|
|
|
134
|
|
|
} |
|
135
|
|
|
|
supernova-ws /
SuperNova
Loading history...