rank] = ($byRank[$c->rank] ?? 0) + 1; } foreach ($byRank as $r => $n) { if ($n === 4) { $score += 7; // 炸弹 } if ($r === Card::JOKER_SMALL) { $score += 4; } if ($r === Card::JOKER_BIG) { $score += 5; } if ($r === 15) { $score += 2; // 2 } if ($r === 14 || $r === 13) { $score += 1; // A/K } } if ($score >= 16) { return 3; } if ($score >= 10) { return 2; } if ($score >= 6) { return 1; } return 0; } /** 执行 AI 玩家的整个回合（含技能）。 */ public static function act(Game $g, int $player): void { if ($g->phase !== 'playing' || $g->turn !== $player) { return; } self::maybeTurnStartSkill($g, $player); if ($g->phase !== 'playing' || $g->turn !== $player) { return; } $moves = $g->legalMoves($player); if ($g->lastPlay === null) { if ($moves === []) { return; } $mv = self::pickLead($g, $player, $moves); self::maybeArmOnPlay($g, $player, $mv); self::maybeArmOnBomb($g, $player, $mv); $g->play($player, $mv->cards); return; } $beat = self::pickFollow($g, $player, $moves); if ($beat === null) { $g->pass($player); return; } self::maybeArmOnPlay($g, $player, $beat); self::maybeArmOnBomb($g, $player, $beat); $g->play($player, $beat->cards); } /** 赤犬反击：对手刚出炸弹时调用，决定是否反击。 */ public static function maybeCounter(Game $g, int $player): bool { if ($g->lastPlay === null || !$g->lastPlay['combo']->isBomb) { return false; } if ($g->players[$player]->characterId !== 'akainu') { return false; } $skill = Character::byId('akainu')->skill(); if (!$g->canUse($player, $skill)) { return false; } $bomber = $g->lastPlay['player']; // 农民反击地主，或地主反击农民（阻止其快出完） $threat = $g->handCount($bomber) <= 5; if ($g->side($player) !== $g->side($bomber) || $threat) { $g->counterBomb($player); return true; } return false; } // ---------------------------------------------------------------- 决策细节 /** * 首出时挑选要甩出的牌组（公开，供控制器提示与测试复用）。 * * @param list $moves */ public static function pickLead(Game $g, int $player, array $moves): Combo { $nonBomb = \array_filter($moves, static fn (Combo $c) => !$c->isBomb && !$c->isRocket); if ($nonBomb !== []) { // 优先甩出牌数多的组合（顺/飞机/连对），其次最小单 \usort($nonBomb, static function (Combo $a, Combo $b): int { $ca = \count($a->cards); $cb = \count($b->cards); if ($cb !== $ca) { return $cb <=> $ca; } return $a->rank <=> $b->rank; }); return $nonBomb[0]; } // 只剩炸弹/火箭 \usort($moves, static fn (Combo $a, Combo $b): int => $a->rank <=> $b->rank); return $moves[0]; } /** * 跟牌时挑选要压过的牌组（公开，供控制器提示与测试复用）。 * * @param list $moves */ public static function pickFollow(Game $g, int $player, array $moves): ?Combo { if ($moves === []) { return null; } $oppHand = PHP_INT_MAX; foreach ([0, 1, 2] as $p) { if ($p !== $player && $g->side($p) !== $g->side($player)) { $oppHand = \min($oppHand, $g->handCount($p)); } } $nonBomb = \array_filter($moves, static fn (Combo $c) => !$c->isBomb && !$c->isRocket); if ($nonBomb !== []) { \usort($nonBomb, static fn (Combo $a, Combo $b): int => $a->rank <=> $b->rank); return $nonBomb[0]; } // 只有炸弹/火箭：对手快出完才用 if ($oppHand <= 2) { \usort($moves, static fn (Combo $a, Combo $b): int => $a->rank <=> $b->rank); return $moves[0]; } return null; // 留炸弹 } private static function maybeTurnStartSkill(Game $g, int $player): void { $ps = $g->players[$player]; if ($ps->characterId === null) { return; } $skill = Character::byId($ps->characterId)->skill(); if ($skill->trigger !== 'onTurnStart') { return; } if (!$g->canUse($player, $skill)) { return; } // 目标：手牌最少的对手（最具威胁） $target = null; $best = PHP_INT_MAX; foreach ([0, 1, 2] as $p) { if ($p === $player) { continue; } $c = $g->handCount($p); if ($c < $best) { $best = $c; $target = $p; } } if ($target === null) { return; } // 势力感知：海军/七武海更爱用控制技；四皇（大妈）偷牌也积极 $g->armSkill($player, $target); } private static function maybeArmOnPlay(Game $g, int $player, Combo $mv): void { $ps = $g->players[$player]; if ($ps->characterId === null || $ps->armed !== null) { return; } $skill = Character::byId($ps->characterId)->skill(); if ($skill->trigger !== 'onPlay') { return; } if (!$g->canUse($player, $skill)) { return; } $faction = $ps->faction; if ($skill->id === 'garp_shock' || $skill->id === 'mihawk_unblock') { if ($mv->type === 'single' || $mv->type === 'pair') { // 海军/七武海：用控制技压制 $g->armSkill($player); } } elseif ($skill->id === 'shanks_haki') { // 四皇：手牌少时花霸气锁 trick；否则偶尔用 if ($g->handCount($player) <= 6 || ($g->lastPlay !== null && \rand(0, 2) === 0)) { $g->armSkill($player); } } } private static function maybeArmOnBomb(Game $g, int $player, Combo $mv): void { $ps = $g->players[$player]; if ($ps->characterId === null || $ps->armed !== null) { return; } $skill = Character::byId($ps->characterId)->skill(); if ($skill->trigger !== 'onBombPlayed' || !$mv->isBomb) { return; } if (!$g->canUse($player, $skill)) { return; } if ($skill->id === 'whitebeard_quake') { $g->armSkill($player); } } }