炸弹(比点) > 普通(同型同长比点)。技能修正（霸气/不可拦截） * 由 Engine 在对局层处理，不在本类内。 */ final class Combo { public function __construct( public string $type, public int $rank, // 主要比较点（炸弹/火箭用 17） public int $length, // 顺子/连对/飞机的长度 public array $cards, // list public bool $isBomb = false, public bool $isRocket = false, ) { } /** * @param list $cards */ public static function parse(array $cards): ?self { $n = \count($cards); if ($n === 0) { return null; } $byRank = []; foreach ($cards as $c) { $byRank[$c->rank][] = $c; } $ranks = \array_keys($byRank); \sort($ranks); $counts = []; foreach ($ranks as $r) { $counts[$r] = \count($byRank[$r]); } // 火箭（双王） if ($n === 2 && isset($byRank[Card::JOKER_SMALL]) && isset($byRank[Card::JOKER_BIG])) { return new self('rocket', Card::JOKER_BIG, 1, $cards, false, true); } // 炸弹（四同） if ($n === 4 && \count($ranks) === 1) { return new self('bomb', $ranks[0], 1, $cards, true); } // 单 if ($n === 1) { return new self('single', $ranks[0], 1, $cards); } // 对 if ($n === 2 && \count($ranks) === 1) { return new self('pair', $ranks[0], 1, $cards); } // 三 if ($n === 3 && \count($ranks) === 1) { return new self('triple', $ranks[0], 1, $cards); } // 三带一 if ($n === 4 && \count($ranks) === 2) { $triple = self::rankWithCount($counts, 3); if ($triple !== null) { return new self('triple1', $triple, 1, $cards); } return null; } // 三带二 if ($n === 5 && \count($ranks) === 2) { $triple = self::rankWithCount($counts, 3); $pair = self::rankWithCount($counts, 2); if ($triple !== null && $pair !== null) { return new self('triple2', $triple, 1, $cards); } return null; } $maxRank = \max($ranks); $allOnes = \min($counts) === 1 && \max($counts) === 1; $allTwos = \min($counts) === 2 && \max($counts) === 2; $allThrees = \min($counts) === 3 && \max($counts) === 3; // 顺子（≥5 连续单张，不含 2/王） if ($allOnes && $n >= 5 && $maxRank <= 14 && self::isConsecutive($ranks)) { return new self('straight', $maxRank, $n, $cards); } // 连对（≥3 连续对子，不含 2/王） if ($allTwos && $n >= 6 && $maxRank <= 14 && self::isConsecutive($ranks)) { return new self('straight2', $maxRank, (int) ($n / 2), $cards); } // 飞机（≥2 连续三张，可带翼） if ($allThrees) { return new self('plane', $maxRank, $n, $cards); } $plane = self::planeWithWings($ranks, $counts, $n, $cards); if ($plane !== null) { return $plane; } return null; } /** * @param array $counts */ private static function rankWithCount(array $counts, int $want): ?int { foreach ($counts as $r => $c) { if ($c === $want) { return $r; } } return null; } /** * @param list $ranks * @param array $counts * @param list $cards */ private static function planeWithWings(array $ranks, array $counts, int $n, array $cards): ?self { $tripleRanks = []; $wingRanks = []; foreach ($ranks as $r) { if ($counts[$r] === 3) { $tripleRanks[] = $r; } else { $wingRanks[] = $r; } } if (\count($tripleRanks) < 2 || !self::isConsecutive($tripleRanks) || \max($tripleRanks) > 14) { return null; } $t = \count($tripleRanks); $expectedWings = $n - 3 * $t; // 无翼 if ($expectedWings === 0) { return new self('plane', \max($tripleRanks), $t, $cards); } // 单翼：t 张单牌 if ($expectedWings === $t && \count($wingRanks) === $t && self::allCount($wingRanks, $counts, 1)) { return new self('plane1', \max($tripleRanks), $t, $cards); } // 对翼：t 个对子 if ($expectedWings === 2 * $t && \count($wingRanks) === $t && self::allCount($wingRanks, $counts, 2)) { return new self('plane2', \max($tripleRanks), $t, $cards); } return null; } /** * @param list $ranks * @param array $counts */ private static function allCount(array $ranks, array $counts, int $want): bool { foreach ($ranks as $r) { if (($counts[$r] ?? 0) !== $want) { return false; } } return true; } /** * @param list $ranks */ private static function isConsecutive(array $ranks): bool { $r = \array_values($ranks); if (\count($r) < 2) { return false; } \sort($r); for ($i = 1; $i < \count($r); $i++) { if ($r[$i] !== $r[$i - 1] + 1) { return false; } } return true; } /** a 是否能压过当前桌面 lastPlay（b）。b=null 表示自由出牌。 */ public static function beats(self $a, ?self $b): bool { if ($b === null) { return true; } if ($a->isRocket) { return true; } if ($b->isRocket) { return false; } if ($a->isBomb) { if ($b->isBomb) { return $a->rank > $b->rank; } return true; } if ($b->isBomb) { return false; } if ($a->type !== $b->type) { return false; } if ($a->length !== $b->length) { return false; } return $a->rank > $b->rank; } public function describe(): string { $names = [ 'single' => '单张', 'pair' => '对子', 'triple' => '三张', 'triple1' => '三带一', 'triple2' => '三带二', 'straight' => '顺子', 'straight2' => '连对', 'plane' => '飞机', 'plane1' => '飞机带单', 'plane2' => '飞机带对', 'bomb' => '炸弹', 'rocket' => '王炸', ]; $label = $names[$this->type] ?? $this->type; return \sprintf('%s(%s)', $label, \implode('', \array_map(static fn (Card $c) => $c->label(), $this->cards))); } }