|
| 1 | +<?php |
| 2 | + |
| 3 | +// src/Service/EloCalculator.php |
| 4 | +namespace App\Service; |
| 5 | + |
| 6 | +use Psr\Log\LoggerInterface; |
| 7 | +use Symfony\Component\HttpFoundation\Response; |
| 8 | + |
| 9 | +class EloCalculator |
| 10 | +{ |
| 11 | + // Variables |
| 12 | + private $delta; // Différence d'ELO pour laquelle un joueur A à 10x plus de chances de gagner qu'un joueur B (De base : 400) |
| 13 | + private $factor; // Nombre de points maximum que peut gagner ou perdre un joueur après un match (De base : 32) |
| 14 | + private $winStatus; // Situation finale de la partie, 'p1win' | 'p2win' | 'nowin' |
| 15 | + |
| 16 | + // Builders |
| 17 | + function __construct($delta = 400, $factor = 32, $winStatus = 'nowin') { |
| 18 | + $this->delta = $delta; |
| 19 | + $this->factor = $factor; |
| 20 | + $this->winStatus = $winStatus; |
| 21 | + } |
| 22 | + |
| 23 | + function __destruct() { |
| 24 | + |
| 25 | + } |
| 26 | + // Getters & Setters |
| 27 | + public function getDelta() { |
| 28 | + return $this->delta; |
| 29 | + } |
| 30 | + public function setDelta($delta) { |
| 31 | + if (!empty($delta)) { |
| 32 | + $this->delta = $delta; |
| 33 | + } else { |
| 34 | + $this->delta = $this->getDelta(); |
| 35 | + } |
| 36 | + } |
| 37 | + public function getFactor() { |
| 38 | + return $this->factor; |
| 39 | + } |
| 40 | + public function setFactor($factor) { |
| 41 | + if (!empty($factor)) { |
| 42 | + $this->factor = $factor; |
| 43 | + } else { |
| 44 | + $this->factor = $this->getFactor(); |
| 45 | + } |
| 46 | + } |
| 47 | + public function getWinStatus() { |
| 48 | + return $this->winStatus; |
| 49 | + } |
| 50 | + public function setWinStatus($winStatus) { |
| 51 | + if (empty($winStatus)) { |
| 52 | + $this->winStatus = $winStatus; |
| 53 | + } else { |
| 54 | + $this->winStatus = $this->getWinStatus(); |
| 55 | + } |
| 56 | + } |
| 57 | + |
| 58 | + // Maths - Probabilites |
| 59 | + public function calculatriceProbabiltesPlayerA($eloA,$eloB) { |
| 60 | + |
| 61 | + return 1 / (1 + pow(10, ($eloB-$eloA)/$this->getDelta())); |
| 62 | + |
| 63 | + } |
| 64 | + // Maths - Mise à jour des scores Elo |
| 65 | + public function calculatriceElo($eloA = 1000, $eloB = 1000, $player = "Undefined") { |
| 66 | + |
| 67 | + $successStatus = true; |
| 68 | + |
| 69 | + // Calcul des propabilités selon le joueur concerné |
| 70 | + switch ($player) { |
| 71 | + case 'A': |
| 72 | + $probability = $this->calculatriceProbabiltesPlayerA($eloA, $eloB); |
| 73 | + break; |
| 74 | + case 'B': |
| 75 | + $probability = 1.0-($this->calculatriceProbabiltesPlayerA($eloA, $eloB)); |
| 76 | + break; |
| 77 | + default: |
| 78 | + echo "Je ne sais pas quel joueur est examiné du côté user."; |
| 79 | + $successStatus = false; |
| 80 | + break; |
| 81 | + } |
| 82 | + |
| 83 | + // Établissement des ratings |
| 84 | + switch ($this->getWinStatus()) { |
| 85 | + case 'p1win': |
| 86 | + $newEloPlayer = ($player === "A") ? $eloA + $this->getFactor()*(1-$probability) : $eloB + $this->getFactor()*(0-$probability); |
| 87 | + break; |
| 88 | + case 'p2win': |
| 89 | + $newEloPlayer = ($player === "A") ? $eloA + $this->getFactor()*(0-$probability) : $eloB + $this->getFactor()*(1-$probability); |
| 90 | + break; |
| 91 | + case 'nowin': |
| 92 | + $newEloPlayer = ($player === "A") ? $eloA + $this->getFactor()*(0.5-$probability) : $eloB + $this->getFactor()*(0.5-$probability); |
| 93 | + break; |
| 94 | + default: |
| 95 | + echo "Je ne comprends pas l'issue du match."; |
| 96 | + $successStatus = false; |
| 97 | + break; |
| 98 | + } |
| 99 | + |
| 100 | + // Résultat du nouveau ELO |
| 101 | + return ($successStatus) ? round($newEloPlayer,0) : null; |
| 102 | + |
| 103 | + } |
| 104 | +} |
0 commit comments