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Fix random song selection bias in daily puzzle generation

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Hördle Bot
2025-12-03 17:34:23 +01:00
parent 6e93529bc3
commit b730c6637a
1 changed files with 11 additions and 7 deletions
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18
lib/dailyPuzzle.ts
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@@ -49,13 +49,15 @@ export async function getOrCreateDailyPuzzle(genre: Genre | null = null) {
// Calculate total weight
const totalWeight = weightedSongs.reduce((sum, item) => sum + item.weight, 0);
// Pick a random song based on weights
// Pick a random song based on weights using cumulative weights
// This ensures proper distribution and handles edge cases
let random = Math.random() * totalWeight;
let selectedSong = weightedSongs[0].song;
let selectedSong = weightedSongs[weightedSongs.length - 1].song; // Fallback to last song
let cumulativeWeight = 0;
for (const item of weightedSongs) {
random -= item.weight;
if (random <= 0) {
cumulativeWeight += item.weight;
if (random <= cumulativeWeight) {
selectedSong = item.song;
break;
}
@@ -156,11 +158,13 @@ export async function getOrCreateSpecialPuzzle(special: Special) {
const totalWeight = weightedSongs.reduce((sum, item) => sum + item.weight, 0);
let random = Math.random() * totalWeight;
let selectedSpecialSong = weightedSongs[0].specialSong;
let selectedSpecialSong = weightedSongs[weightedSongs.length - 1].specialSong; // Fallback to last song
// Pick a random song based on weights using cumulative weights
let cumulativeWeight = 0;
for (const item of weightedSongs) {
random -= item.weight;
if (random <= 0) {
cumulativeWeight += item.weight;
if (random <= cumulativeWeight) {
selectedSpecialSong = item.specialSong;
break;
}