feat: add legacy-compatible neutral auctions

2026-07-25 11:07:37 +00:00
parent 93ae4df519
commit 06c7197a1a
15 changed files with 999 additions and 31 deletions
@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+use sammo\LiteHashDRBG;
+use sammo\RandUtil;
+use sammo\Util;
+
+if ($argc !== 3) {
+    fwrite(STDERR, "usage: php neutral-auction.php <ref-root> <json-input>\n");
+    exit(2);
+}
+
+$refRoot = rtrim($argv[1], '/');
+require $refRoot . '/vendor/autoload.php';
+
+$input = json_decode($argv[2], true, flags: JSON_THROW_ON_ERROR);
+$rng = new RandUtil(new LiteHashDRBG(Util::simpleSerialize(
+    $input['hiddenSeed'],
+    'monthly',
+    $input['seedYear'],
+    $input['seedMonth'],
+)));
+
+for ($idx = 0; $idx < max(0, (int)$input['nationCount']); $idx++) {
+    $rng->nextRange(0.95, 1.05);
+}
+if ($input['consumeTournamentRoll']) {
+    $rng->nextBool(0.4);
+}
+
+$avgGold = Util::valueFit($input['averageGold'], 1000, 20000);
+$avgRice = Util::valueFit($input['averageRice'], 1000, 20000);
+$result = [];
+$appendIfOpenable = static function (array $plan) use (&$result): void {
+    if ($plan['closeTurnCnt'] < 1 || $plan['closeTurnCnt'] > 24) {
+        return;
+    }
+    if ($plan['amount'] < 100 || $plan['amount'] > 10000) {
+        return;
+    }
+    if ($plan['startBidAmount'] < $plan['amount'] * 0.5 || $plan['amount'] * 2 < $plan['startBidAmount']) {
+        return;
+    }
+    if ($plan['finishBidAmount'] < $plan['amount'] * 1.1 || $plan['amount'] * 2 < $plan['finishBidAmount']) {
+        return;
+    }
+    if ($plan['finishBidAmount'] < $plan['startBidAmount'] * 1.1) {
+        return;
+    }
+    $result[] = $plan;
+};
+
+$buyRiceCount = max(0, (int)$input['buyRiceAuctionCount']);
+if ($rng->nextBool(1 / ($buyRiceCount + 5))) {
+    $mul = $rng->nextRangeInt(1, 5);
+    $amount = $avgRice / 20 * $mul;
+    $cost = $avgGold / 20 * 0.9 * $mul;
+    $topv = $amount * 2;
+    $cost = Util::valueFit($cost, $amount * 0.8, $amount * 1.2);
+    $appendIfOpenable([
+        'auctionType' => 'BUY_RICE',
+        'amount' => Util::round($amount, -1),
+        'startBidAmount' => Util::round($cost, -1),
+        'finishBidAmount' => Util::round($topv, -1),
+        'closeTurnCnt' => $rng->nextRangeInt(3, 12),
+    ]);
+}
+
+$sellRiceCount = max(0, (int)$input['sellRiceAuctionCount']);
+if ($rng->nextBool(1 / ($sellRiceCount + 5))) {
+    $mul = $rng->nextRangeInt(1, 5);
+    $amount = $avgGold / 20 * $mul;
+    $cost = $avgRice / 20 * 1.1 * $mul;
+    $topv = $amount * 2;
+    $cost = Util::valueFit($cost, $amount * 0.8, $amount * 1.2);
+    $appendIfOpenable([
+        'auctionType' => 'SELL_RICE',
+        'amount' => Util::round($amount, -1),
+        'startBidAmount' => Util::round($cost, -1),
+        'finishBidAmount' => Util::round($topv, -1),
+        'closeTurnCnt' => $rng->nextRangeInt(3, 12),
+    ]);
+}
+
+echo json_encode($result, JSON_THROW_ON_ERROR | JSON_UNESCAPED_UNICODE), PHP_EOL;