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Check yellow counts even in Hard difficulty (fixes #58)

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This commit is contained in:
Lynn 2022-01-24 18:16:26 +01:00
parent 7c11cfc5a2
commit ddba750d12
1 changed files with 30 additions and 35 deletions
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65
src/clue.ts
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@ -66,46 +66,41 @@ export function violation(
if (difficulty === Difficulty.Normal) {
return undefined;
}
const ultra = difficulty === Difficulty.UltraHard;
let i = 0;
for (const { letter, clue } of clues) {
const upper = letter.toUpperCase();
const clueCount = clues.filter(
(c) => c.letter === letter && c.clue !== Clue.Absent
).length;
const guessCount = guess.split(letter).length - 1;
const glyph = letter.toUpperCase();
const glyphs = glyph + (clueCount !== 1 ? "s" : "");
const nth = ordinal(i + 1);
if (clue === Clue.Correct) {
if (guess[i] !== letter) {
return nth + " letter must be " + upper;
}
} else if (clue === Clue.Elsewhere) {
if (!guess.includes(letter)) {
return "Guess must contain " + upper;
}
// Hard: enforce greens stay in place.
if (clue === Clue.Correct && guess[i] !== letter) {
return nth + " letter must be " + glyph;
}
if (difficulty === Difficulty.UltraHard) {
if (clue !== Clue.Correct && guess[i] === letter) {
return nth + " letter can't be " + upper;
}
const clueCount = clues.filter(
(c) => c.letter === letter && c.clue !== Clue.Absent
).length;
const guessCount = guess.split(letter).length - 1;
const hasAbsent = clues.some(
(c) => c.letter === letter && c.clue === Clue.Absent
);
const amount = englishNumbers[clueCount];
const s = clueCount !== 1 ? "s" : "";
if (hasAbsent) {
if (guessCount !== clueCount) {
if (clueCount === 0) {
return `Guess can't contain ${upper}`;
} else {
return `Guess must contain exactly ${amount} ${upper}${s}`;
}
}
} else {
if (guessCount < clueCount) {
return `Guess must contain at least ${amount} ${upper}${s}`;
}
}
// Hard: enforce yellows are used.
if (guessCount < clueCount) {
const atLeastN =
clueCount > 1 ? `at least ${englishNumbers[clueCount]} ` : "";
return `Guess must contain ${atLeastN}${glyphs}`;
}
// Ultra Hard: disallow would-be greens.
if (ultra && clue !== Clue.Correct && guess[i] === letter) {
return nth + " letter can't be " + glyph;
}
// Ultra Hard: if the exact amount is known because of an Absent clue, enforce it.
if (ultra && clue === Clue.Absent && guessCount !== clueCount) {
return clueCount === 0
? `Guess can't contain ${glyph}`
: `Guess must contain exactly ${englishNumbers[clueCount]} ${glyphs}`;
}
++i;
}
return undefined;