word-waltz / files / src / utils / scoring.ts

scoring.ts

1	/**
2	* utils/scoring.ts — round score calculation
3	*
4	* Score table:
5	* 1 guess → 6 points
6	* 2 guesses → 5 points
7	* 3 guesses → 4 points
8	* 4 guesses → 3 points
9	* 5 guesses → 2 points
10	* 6 guesses → 1 point
11	* failed → 0 points
12	*/
13
14	/**
15	* Calculate the score for a completed round.
16	* @param guessCount number of guesses taken (1–6), or > 6 if failed
17	* @param solved whether the solver got the word
18	*/
19	export function calculateScore(guessCount: number, solved: boolean): number {
20	if (!solved) return 0;
21	return Math.max(0, 7 - guessCount);
22	}
23
24	const WORD_LEN = 5;
25
26	function evaluateGuess(guess: string, secret: string): Array<'correct' \| 'present' \| 'absent'> {
27	const result: Array<'correct' \| 'present' \| 'absent'> = Array(WORD_LEN).fill('absent');
28	const remaining = secret.split('');
29	for (let i = 0; i < WORD_LEN; i++) {
30	if (guess[i] === secret[i]) { result[i] = 'correct'; remaining[i] = ''; }
31	}
32	for (let i = 0; i < WORD_LEN; i++) {
33	if (result[i] === 'correct') continue;
34	const idx = remaining.indexOf(guess[i]);
35	if (idx !== -1) { result[i] = 'present'; remaining[idx] = ''; }
36	}
37	return result;
38	}
39
40	const EMOJI: Record<'correct' \| 'present' \| 'absent', string> = {
41	correct: '🟩',
42	present: '🟨',
43	absent: '⬛',
44	};
45
46	/** Convert a list of guesses for a given secret word into Wordle emoji rows. */
47	export function guessesToEmoji(guesses: string[], secret: string): string {
48	return guesses
49	.map((g) => evaluateGuess(g, secret.toUpperCase()).map((s) => EMOJI[s]).join(''))
50	.join('\n');
51	}