Widget:Calculator/Bad Luck

<style>

1. luck-calculator-form { margin-top: 10px; max-width: 360px; }
2. luck-calculator-form label,
3. luck-calculator-form input,
4. luck-calculator-form button { display: block; box-sizing: border-box; border-radius: 4px; width: 100%; }
5. luck-calculator-form label { margin: 8px 0 4px; font-weight: bold; }
6. luck-calculator-form input { background-color: var(--bg-main, #1e1f22); color: var(--text-main, #b6b4b2); border: 1px solid var(--border-color-base, #2d2d2d); padding: 8px 10px; font-size: 14px; }
7. luck-calculator-form button { background-color: var(--theme-color-accent-base, #2ecc71); color: white; border: none; padding: 8px 12px; margin-top: 15px; cursor: pointer; font-size: 16px; transition: background-color 0.2s; }
8. luck-calculator-form button:hover { background-color: var(--theme-color-accent-hover, #27ae60); }

.luck-results-box { margin-top: 20px; padding: 15px; background-color: var(--bg-secondary, #1a1a1a); color: var(--text-main, #ccc); border: 1px solid var(--border-color-base, #333); border-radius: 5px; line-height: 1.5; } .luck-results-box b { color: var(--text-bright, #fff); } .luck-results-box table { width: 100%; margin-top: 15px; border-collapse: collapse; font-size: 13px; } .luck-results-box th, .luck-results-box td { padding: 6px 8px; text-align: left; border-bottom: 1px solid var(--border-color-base, #333); } .luck-results-box tr:last-child td { border-bottom: none; } .luck-results-box th { color: var(--text-bright, #fff); } </style> <form id="luck-calculator-form">

 <label for="dropRateInput">Drop Rate</label>
 <input id="dropRateInput" type="text" placeholder="e.g., 1/1000, 0.1%, or 0.001" />
 <label for="attemptsInput">Number of Attempts</label>
 <input id="attemptsInput" type="text" placeholder="e.g., 5000" />
 <button type="submit">Calculate</button>

</form> <script> document.getElementById("luck-calculator-form").addEventListener("submit", handleCalculation); function parseDropRate(input) {

 const cleanInput = input.trim().replace(/^~/, ).replace(/,/g, );
 if (cleanInput.endsWith("%")) {
   const parsed = parseFloat(cleanInput.slice(0, -1));
   return isNaN(parsed) ? NaN : parsed / 100;
 }
 if (cleanInput.includes("/")) {
   const [numStr, denomStr] = cleanInput.split("/");
   const num = parseFloat(numStr);
   const denom = parseFloat(denomStr);
   if (!isNaN(num) && !isNaN(denom) && denom > 0) return num / denom;
   return NaN;
 }
 const parsed = parseFloat(cleanInput);
 return isNaN(parsed) ? NaN : parsed;

} function generateDropChanceTable(p) {

 const targetChances = [10, 20, 30, 40, 50, 60, 70, 80, 90, 95, 99];

let html = `

To achieve a specific chance for a 1 in ${Math.round(1/p).toLocaleString()} drop, you would need:

`;

 targetChances.forEach(chance => {
   const attempts = Math.log(1 - (chance / 100)) / Math.log(1 - p);

html += ``;

 });

html += "

Chance	Required Attempts
${chance}%	${Math.ceil(attempts).toLocaleString()}

";

 return html;

} function handleCalculation(event) {

 event.preventDefault();
 const dropRateStr = document.getElementById("dropRateInput").value;
 const attemptsStr = document.getElementById("attemptsInput").value;
 const resultBox = document.getElementById("luck-result");
 const p = parseDropRate(dropRateStr);
 const attempts = parseInt(attemptsStr.replace(/,/g, ).trim(), 10);
 if (isNaN(p) || p <= 0 || p >= 1 || isNaN(attempts) || attempts <= 0) {
   resultBox.innerHTML = "Please enter a valid drop rate and number of attempts.";
   resultBox.style.display = "block";
   return;
 }
 const noDropProb = Math.pow(1 - p, attempts);
 const dryPercent = noDropProb * 100;
 const inverseChance = 1 / noDropProb;
 const resultText = `${dryPercent.toFixed(4)}% of players would be this dry or drier. That's roughly 1 in ${Math.round(inverseChance).toLocaleString()} players.` + generateDropChanceTable(p);
 resultBox.innerHTML = resultText;
 resultBox.style.display = "block";

} </script>