// ==UserScript==
// @name 明日方舟界园 - 掷出通宝成功概率计算器
// @namespace http://tampermonkey.net/
// @version 0.2
// @iconURL https://torappu.prts.wiki/assets/roguelike_topic_itempic/rogue_5_copper_B_01.png
// @description 计算从花、衡、厉三种通宝中掷出n个时，某种特定通宝至少有m个的概率
// @author 幺幺幺幺吆
// @license MIT
// @match *://*/*
// @grant none
// @downloadURL none
// ==/UserScript==
(function() {
'use strict';
// 创建浮动按钮
const floatBtn = document.createElement('button');
floatBtn.title = '投钱'; // 保留文字提示作为鼠标悬停tooltip
// 使用网络图片作为按钮背景
floatBtn.style.cssText = `
position: fixed;
bottom: 20px;
right: 20px;
z-index: 9999;
width: 80px;
height: 80px;
padding: 0;
background: url('https://torappu.prts.wiki/assets/roguelike_topic_itempic/rogue_5_copper_B_01.png') no-repeat center/100%;
background-color: none;
border: none;
border-radius: 50%;
cursor: pointer;
filter: drop-shadow(0 2px 3px rgba(0,0,0,0.3));
`;
// 图片加载失败的回退方案
floatBtn.innerHTML = `
投钱
`;
// 图片加载失败时显示文字
floatBtn.onerror = function() {
this.style.background = '#60928B';
this.innerHTML = '投钱';
this.style.fontWeight = 'bold';
this.style.color = 'white';
this.style.padding = '10px';
this.style.borderRadius = '50px';
};
// 创建计算器界面
const calculator = document.createElement('div');
calculator.style.cssText = `
transition: all 0.3s ease;
opacity: 0;
transform: translateY(20px);
display: none;
position: fixed;
bottom: 70px;
right: 20px;
z-index: 9998;
width: 300px;
padding: 15px;
background-color: white;
border: 1px solid #ddd;
border-radius: 5px;
box-shadow: 0 0 10px rgba(0,0,0,0.1);
`;
calculator.innerHTML = `
掷出通宝成功概率计算器
钱盒中通宝数量：
掷出通宝：
掷出数量：
至少数量：
计算
`;
document.body.appendChild(calculator);
document.body.appendChild(floatBtn);
// 显示/隐藏计算器
floatBtn.addEventListener('click', () => {
if (calculator.style.display === 'none') {
calculator.style.display = 'block';
// 使用requestAnimationFrame确保样式应用
requestAnimationFrame(() => {
calculator.style.opacity = '1';
calculator.style.transform = 'translateY(0)';
});
} else {
calculator.style.opacity = '0';
calculator.style.transform = 'translateY(20px)';
// 动画结束后隐藏元素
setTimeout(() => {
calculator.style.display = 'none';
}, 300); // 与过渡时间一致
}
});
// 计算概率
document.getElementById('tm-calculate').addEventListener('click', () => {
function combination(n, k) {
if (k < 0 || k > n) return 0;
if (k === 0 || k === n) return 1;
k = Math.min(k, n - k);
let res = 1;
for (let i = 1; i <= k; i++) {
res = res * (n - k + i) / i;
}
return res;
}
function hypergeometric(N, K, n, k) {
return combination(K, k) * combination(N - K, n - k) / combination(N, n);
}
const a = parseInt(document.getElementById('tm-a').value) || 0;
const b = parseInt(document.getElementById('tm-b').value) || 0;
const c = parseInt(document.getElementById('tm-c').value) || 0;
const n = parseInt(document.getElementById('tm-n').value) || 0;
const target = document.querySelector('input[name="target"]:checked').value;
const m = parseInt(document.getElementById('tm-m').value) || 0;
const total = a + b + c;
if (total > 20) {
document.getElementById('tm-result').innerHTML = "错误：通宝总数量不能超过20
";
return;
}
if (n > total) {
document.getElementById('tm-result').innerHTML = "错误：掷出通宝数量不能超过通宝总数量
";
return;
}
let K;
let targetName;
switch(target) {
case 'a':
K = a;
targetName = "花";
break;
case 'b':
K = b;
targetName = "衡";
break;
case 'c':
K = c;
targetName = "厉";
break;
default:
K = 0;
targetName = "";
}
let prob = 0;
for (let k = m; k <= Math.min(K, n); k++) {
prob += hypergeometric(total, K, n, k);
}
const percentage = (prob * 100).toFixed(2);
document.getElementById('tm-result').innerHTML = `
结果： 从现有的 ${total} 个通宝中掷出 ${n} 个通宝，其中至少有 ${m} 个
${targetName}
通宝的概率为 ${percentage}%
`;
});
})();