libpairtwo/src/Tiebreaks.php

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<?php
namespace JeroenED\Libpairtwo;
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use JeroenED\Libpairtwo\Enums\Color;
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use JeroenED\Libpairtwo\Models\Tournament;
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use JeroenED\Libpairtwo\Enums\Result;
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abstract class Tiebreaks extends Tournament
{
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/**
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* @param Player $player
* @return float|null
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*/
protected function calculateKeizer(Player $player): ?float
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{
return $player->getBinaryData('ScoreAmerican');
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}
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/**
* @param Player $player
* @return float|null
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*/
protected function calculateAmerican(Player $player): ?float
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{
return $player->getBinaryData('ScoreAmerican');
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}
/**
* @param Player $player
* @return float|null
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*/
protected function calculatePoints(Player $player): ?float
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{
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return $player->getPoints();
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}
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/**
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* @param Player $player
* @return float|null
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*/
protected function calculateBaumbach(Player $player): ?float
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{
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$totalwins = 0;
foreach ($player->getPairings() as $pairing) {
if (array_search($pairing->getResult(), Constants::Won) !== false) {
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$totalwins++;
}
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}
return $totalwins;
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}
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/**
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* @param Player $player
* @return float|null
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*/
protected function calculateBlackPlayed(Player $player): ?float
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{
$totalwins = 0;
foreach ($player->getPairings() as $pairing) {
if (array_search($pairing->getColor(), Constants::Black) !== false) {
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$totalwins++;
}
}
return $totalwins;
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}
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/**
* @param Player $player
* @return float|null
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*/
protected function calculateBlackWin(Player $player): ?float
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{
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$totalwins = 0;
foreach ($player->getPairings() as $pairing) {
if (array_search($pairing->getColor(), Constants::Black) !== false && array_search($pairing->getResult(), Constants::Won) !== false) {
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$totalwins++;
}
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}
return $totalwins;
}
/**
* @param Player $player
* @param array $opponents
* @param int $key
* @return float|null
*/
protected function calculateMutualResult(Player $player, array $opponents, int $key): ?float
{
$interestingplayers = $opponents;
if ($key != 0) {
$interestingplayers = [];
foreach ($opponents as $opponent) {
if (($opponent->getTiebreaks()[$key - 1] == $player->getTiebreaks()[$key - 1]) && ($player != $opponent)) {
$interestingplayers[] = $opponent;
}
}
}
$points = 0;
$totalmatches = 0;
foreach ($player->getPairings() as $pairing) {
if (array_search($pairing->getOpponent(), $interestingplayers) !== false) {
if (array_search($pairing->getResult(), Constants::Won) !== false) {
$points = $points + 1;
} elseif (array_search($pairing->getResult(), Constants::Draw) !== false) {
$points = $points + 0.5;
}
$totalmatches++;
}
}
if ($totalmatches != count($interestingplayers)) {
$points = null;
}
return $points;
}
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/**
* @param Player $player
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* @param int $cut
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* @return float
*/
protected function calculateAverageRating(Player $player, string $type, int $cut = 0): ?float
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{
$pairings = $player->getPairings();
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$allratings = [];
foreach ($pairings as $pairing) {
if (array_search($pairing->getResult(), Constants::NotPlayed) === false) {
$toadd = $pairing->getOpponent()->getElo($type);
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if ($toadd != 0) {
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$allratings[] = $toadd;
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}
}
}
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sort($allratings);
$allratings = array_slice($allratings, $cut);
return round(array_sum($allratings) / count($allratings));
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}
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/**
* @param Player $player
* @param int $cut
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* @return float|null
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*/
protected function calculateAveragePerformance(Player $player, string $type, int $cut = 0): ?float
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{
$pairings = $player->getPairings();
$allratings = [];
foreach ($pairings as $pairing) {
if (array_search($pairing->getResult(), Constants::NotPlayed) === false) {
$toadd = $pairing->getOpponent()->getPerformance($type);
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if ($toadd != 0) {
$allratings[] = $toadd;
}
}
}
sort($allratings);
$allratings = array_slice($allratings, $cut);
return round(array_sum($allratings) / count($allratings));
}
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/**
* @param Player $player
* @param int $cut
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* @return float|null
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*/
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protected function calculateKoya(Player $player, int $cut = 50): ?float
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{
$tiebreak = 0;
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foreach ($player->getPairings() as $plkey => $plpairing) {
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if (($plpairing->getOpponent()->getNoOfWins() / count($plpairing->getOpponent()->getPairings()) * 100) >= $cut) {
$tiebreak += $plpairing->getOpponent()->getNoOfWins();
}
}
return $tiebreak;
}
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/**
* @param Player $player
* @param int $cutlowest
* @param int $cuthighest
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* @return float|null
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*/
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protected function calculateBuchholz(Player $player, int $cutlowest = 0, int $cuthighest = 0): ?float
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{
$tiebreak = 0;
$intpairings = $player->getPairings();
usort($intpairings, function ($a, $b) {
if (is_null($a->getOpponent())) {
return -1;
}
if (is_null($b->getOpponent())) {
return 1;
}
if ($b->getOpponent()->getElo('Nation') == $a->getOpponent()->getElo('Nation')) {
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return 0;
}
return ($b->getOpponent()->getElo('Nation') > $a->getOpponent()->getElo('Nation')) ? 1 : -1;
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});
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array_slice($intpairings, $cutlowest);
array_slice($intpairings, 0 - $cuthighest);
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foreach ($intpairings as $intkey => $intpairing) {
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$tiebreak += $intpairing->getOpponent()->getPoints();
}
return $tiebreak;
}
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/**
* @param Player $player
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* @return float|null
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*/
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protected function calculateSonneborn(Player $player): ?float
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{
$tiebreak = 0;
foreach ($player->getPairings() as $key => $pairing) {
if ($pairing->getOpponent()) {
if (array_search($pairing->getResult(), Constants::Won) !== false) {
$tiebreak += $pairing->getOpponent()->getPoints();
} elseif (array_search($pairing->getResult(), Constants::Draw) !== false) {
$tiebreak += $pairing->getOpponent()->getPoints() / 2;
}
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}
}
return $tiebreak;
}
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/**
* @param Player $player
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* @return float|null
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*/
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protected function calculateKashdan(Player $player): ?float
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{
$tiebreak = 0;
foreach ($player->getPairings() as $pairing) {
$toadd = 0;
if (array_search($pairing->getResult(), Constants::Won) !== false) {
$toadd = 3;
} elseif (array_search($pairing->getResult(), Constants::Draw) !== false) {
$toadd = 2;
} elseif (array_search($pairing->getResult(), Constants::Lost) !== false) {
$toadd = 1;
}
if (array_search(Constants::NotPlayed, $pairing->getResult()) !== false) {
$toadd = 0;
}
$tiebreak += $toadd;
}
return $tiebreak;
}
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/**
* @param Player $player
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* @return float|null
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*/
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protected function calculateCumulative(Player $player): ?float
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{
$tiebreak = 0;
foreach ($player->getPairings() as $pairing) {
$toadd = 0;
if (array_search($pairing->getResult(), Constants::Won) !== false) {
$toadd = 1;
} elseif (array_search($pairing->getResult(), Constants::Draw) !== false) {
$toadd = 0.5;
}
$tiebreak += $tiebreak + $toadd;
}
return $tiebreak;
}
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}