26 lines
1.6 KiB
JavaScript
26 lines
1.6 KiB
JavaScript
import { readFile } from 'node:fs/promises';
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import { scoreRatioFromFormula } from '../src/lib/engine/score.ts';
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// Pinned research snapshot, with source URL, retrieval time and SHA-256.
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const reference = JSON.parse(await readFile(new URL('../docs/research/song-score-formula-reference.json', import.meta.url), 'utf8'));
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const susReference = JSON.parse(await readFile(new URL('../docs/research/sus-score-formulas.json', import.meta.url), 'utf8'));
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const rows = [...reference.charts, ...susReference.charts];
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const formulas = new Map(rows.map((row) => [`${row.songId}.${row.difficulty}`, row]));
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if (formulas.size !== rows.length) throw new Error('중복 악곡 점수 공식입니다.');
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export function formulaScoreMetadata(songId, difficulty, difficultyLevel, totalNotes, liveScoreCoefficientPermil, susSha256) {
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const row = formulas.get(`${songId}.${difficulty.toLowerCase()}`);
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if (!row) return null;
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if (row.susSha256 && row.susSha256 !== susSha256) throw new Error(`${songId}.${difficulty}: 원본 SUS 해시가 다릅니다.`);
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if (row.difficultyLevel !== difficultyLevel || row.fullComboNoteCount !== totalNotes ||
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(liveScoreCoefficientPermil !== undefined && row.liveScoreCoefficientPermil !== liveScoreCoefficientPermil)) {
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throw new Error(`${songId}.${difficulty}: 채보 또는 마스터 데이터가 점수 공식 참고값과 다릅니다.`);
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}
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const scoreFormula = {
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perfectNoteWeight: row.perfectNoteWeight,
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liveScoreCoefficientPermil: row.liveScoreCoefficientPermil,
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difficultyLevel: row.difficultyLevel
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};
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return { scoreRatio: scoreRatioFromFormula(scoreFormula), scoreCalibrationSource: 'formula-v1', scoreFormula };
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}
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