mid-time.github.io/LotterySystem.html at main · Mid-time/mid-time.github.io · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>简约抽奖系统</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background: linear-gradient(135deg, #2c3e50, #4a6491);
            color: #fff;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .container {
            max-width: 800px;
            width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        h1 {
            text-align: center;
            margin-bottom: 30px;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
            font-size: 2.5rem;
            color: #ecf0f1;
        }

        .subtitle {
            text-align: center;
            margin-bottom: 40px;
            color: rgba(236, 240, 241, 0.8);
            font-size: 1.2rem;
            max-width: 600px;
        }

        .lottery-container {
            width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            margin-bottom: 40px;
        }

        .lottery-box {
            width: 300px;
            height: 200px;
            background: #7f8c8d;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 30px;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
            overflow: hidden;
            position: relative;
            border: 2px solid #95a5a6;
        }

        .lottery-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 20px;
            transition: all 0.3s;
        }

        .item-icon {
            font-size: 4rem;
            margin-bottom: 15px;
            transition: transform 0.3s;
        }

        .item-name {
            font-size: 1.5rem;
            font-weight: 600;
            text-align: center;
            margin-bottom: 5px;
        }

        .item-rarity {
            font-size: 1rem;
            padding: 5px 15px;
            border-radius: 15px;
            background: rgba(0, 0, 0, 0.3);
        }

        .controls {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 30px;
        }

        button {
            background: linear-gradient(90deg, #3498db, #2980b9);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 15px 40px;
            font-size: 1.2rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }

        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
        }

        button:active {
            transform: translateY(1px);
        }

        button:disabled {
            background: #95a5a6;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        .result {
            text-align: center;
            font-size: 1.5rem;
            margin-top: 20px;
            min-height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .result-prize {
            display: flex;
            align-items: center;
            gap: 20px;
            background: rgba(52, 152, 219, 0.3);
            padding: 20px 40px;
            border-radius: 10px;
            border: 2px solid rgba(52, 152, 219, 0.5);
        }

        .probability-table {
            width: 100%;
            background: rgba(0, 0, 0, 0.3);
            border-radius: 15px;
            padding: 30px;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .probability-table h2 {
            text-align: center;
            margin-bottom: 20px;
            color: #3498db;
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        th, td {
            padding: 12px 15px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        th {
            background-color: rgba(52, 152, 219, 0.3);
            font-weight: 600;
        }

        tr:nth-child(even) {
            background-color: rgba(255, 255, 255, 0.05);
        }

        .highlight-row {
            background-color: rgba(52, 152, 219, 0.2) !important;
        }

        .rarity-common {
            color: #bdc3c7;
        }

        .rarity-uncommon {
            color: #2ecc71;
        }

        .rarity-rare {
            color: #3498db;
        }

        .rarity-epic {
            color: #9b59b6;
        }

        .rarity-legendary {
            color: #f39c12;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.1); }
            100% { transform: scale(1); }
        }

        .pulsing {
            animation: pulse 1s infinite;
        }

        @keyframes glow {
            0% { box-shadow: 0 0 10px rgba(52, 152, 219, 0.5); }
            50% { box-shadow: 0 0 20px rgba(52, 152, 219, 0.8); }
            100% { box-shadow: 0 0 10px rgba(52, 152, 219, 0.5); }
        }

        .glowing {
            animation: glow 1.5s infinite;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>简约抽奖系统</h1>
        <p class="subtitle">点击开始按钮，奖项将随机切换并逐渐减速，最终停在获得的奖品上</p>

        <div class="lottery-container">
            <div class="lottery-box" id="lotteryBox">
                <div class="lottery-item" id="currentItem">
                    <!-- 当前显示的奖品将在这里 -->
                </div>
            </div>

            <div class="controls">
                <button id="startBtn">开始抽奖</button>
            </div>

            <div class="result" id="result">
                <!-- 抽奖结果将显示在这里 -->
            </div>
        </div>

        <div class="probability-table">
            <h2>奖池概率分布</h2>
            <table id="probabilityTable">
                <!-- 概率表格将由JavaScript生成 -->
            </table>
        </div>
    </div>

    <script>
        document.addEventListener('DOMContentLoaded', function() {
            // ========== 请在此处配置抽奖奖池 ==========
            // 每个奖品的配置包括：名称、图标、稀有度、权重
            // 权重越高，被抽中的概率越大
            const prizePool = [
                { name: "普通手枪", icon: "🔫", rarity: "普通", weight: 40 },
                { name: "军用匕首", icon: "🔪", rarity: "普通", weight: 35 },
                { name: "战斗步枪", icon: "🛡️", rarity: "稀有", weight: 15 },
                { name: "狙击步枪", icon: "🎯", rarity: "稀有", weight: 12 },
                { name: "重型机枪", icon: "💥", rarity: "史诗", weight: 8 },
                { name: "黄金AK47", icon: "🌟", rarity: "史诗", weight: 5 },
                { name: "龙狙", icon: "🐉", rarity: "传说", weight: 2 },
                { name: "宝石刀", icon: "💎", rarity: "传说", weight: 1 }
            ];
            // ==========================================

            const lotteryBox = document.getElementById('lotteryBox');
            const currentItem = document.getElementById('currentItem');
            const startBtn = document.getElementById('startBtn');
            const resultDiv = document.getElementById('result');
            const probabilityTable = document.getElementById('probabilityTable');

            let isDrawing = false;
            let animationId = null;
            let selectedPrize = null;
            let currentSpeed = 50; // 初始切换速度（毫秒）
            let maxSpeed = 500; // 最大切换间隔（毫秒）
            let speedIncrease = 1.1; // 速度增加因子
            let currentInterval = null;

            // 初始化显示
            function initDisplay() {
                // 显示初始状态
                currentItem.innerHTML = `
                    <div class="item-icon">🎁</div>
                    <div class="item-name">点击开始抽奖</div>
                `;

                resultDiv.innerHTML = '';
            }

            // 根据稀有度获取CSS类名
            function getRarityClass(rarity) {
                switch(rarity) {
                    case '普通': return 'common';
                    case '稀有': return 'uncommon';
                    case '史诗': return 'epic';
                    case '传说': return 'legendary';
                    default: return 'common';
                }
            }

            // 初始化概率表格
            function initProbabilityTable() {
                // 计算总权重
                const totalWeight = prizePool.reduce((sum, prize) => sum + prize.weight, 0);

                // 创建表头
                let tableHTML = `
                    <tr>
                        <th>奖品名称</th>
                        <th>稀有度</th>
                        <th>权重</th>
                        <th>概率</th>
                    </tr>
                `;

                // 添加奖品行
                prizePool.forEach(prize => {
                    const probability = ((prize.weight / totalWeight) * 100).toFixed(2);
                    tableHTML += `
                        <tr>
                            <td>${prize.icon} ${prize.name}</td>
                            <td class="rarity-${getRarityClass(prize.rarity)}">${prize.rarity}</td>
                            <td>${prize.weight}</td>
                            <td>${probability}%</td>
                        </tr>
                    `;
                });

                probabilityTable.innerHTML = tableHTML;
            }

            // 根据权重随机选择奖品
            function selectPrizeByWeight() {
                // 计算总权重
                const totalWeight = prizePool.reduce((sum, prize) => sum + prize.weight, 0);

                // 生成随机数
                const random = Math.random() * totalWeight;

                // 根据权重选择奖品
                let weightSum = 0;
                for (const prize of prizePool) {
                    weightSum += prize.weight;
                    if (random <= weightSum) {
                        return prize;
                    }
                }

                // 默认返回第一个奖品（理论上不会执行到这里）
                return prizePool[0];
            }

            // 随机显示一个奖品
            function showRandomPrize() {
                const randomIndex = Math.floor(Math.random() * prizePool.length);
                const prize = prizePool[randomIndex];

                currentItem.innerHTML = `
                    <div class="item-icon">${prize.icon}</div>
                    <div class="item-name">${prize.name}</div>
                    <div class="item-rarity rarity-${getRarityClass(prize.rarity)}">${prize.rarity}</div>
                `;
            }

            // 显示特定奖品
            function showSpecificPrize(prize) {
                currentItem.innerHTML = `
                    <div class="item-icon pulsing">${prize.icon}</div>
                    <div class="item-name">${prize.name}</div>
                    <div class="item-rarity rarity-${getRarityClass(prize.rarity)}">${prize.rarity}</div>
                `;

                lotteryBox.classList.add('glowing');
            }

            // 开始抽奖动画
            function startLottery() {
                if (isDrawing) return;

                isDrawing = true;
                startBtn.disabled = true;
                resultDiv.innerHTML = '';
                lotteryBox.classList.remove('glowing');

                // 重置速度
                currentSpeed = 50;

                // 随机选择奖品
                selectedPrize = selectPrizeByWeight();

                // 开始快速切换
                startFastSwitching();
            }

            // 快速切换阶段
            function startFastSwitching() {
                showRandomPrize();

                if (currentSpeed < maxSpeed) {
                    currentInterval = setTimeout(() => {
                        startFastSwitching();
                    }, currentSpeed);

                    // 逐渐减慢速度
                    currentSpeed *= speedIncrease;
                } else {
                    // 切换到最终奖品
                    finishLottery();
                }
            }

            // 完成抽奖
            function finishLottery() {
                clearTimeout(currentInterval);

                // 显示最终奖品
                showSpecificPrize(selectedPrize);

                // 显示抽奖结果
                resultDiv.innerHTML = `
                    <div class="result-prize">
                        <div class="item-icon">${selectedPrize.icon}</div>
                        <div>
                            <div class="item-name">恭喜您获得了 ${selectedPrize.name}！</div>
                            <div class="item-rarity rarity-${getRarityClass(selectedPrize.rarity)}">${selectedPrize.rarity}</div>
                        </div>
                    </div>
                `;

                // 高亮概率表格中的对应行
                highlightProbabilityTable(selectedPrize.name);

                // 重新启用开始按钮
                startBtn.disabled = false;
                isDrawing = false;
            }

            // 高亮概率表格中的行
            function highlightProbabilityTable(prizeName) {
                const rows = probabilityTable.querySelectorAll('tr');

                rows.forEach(row => {
                    row.classList.remove('highlight-row');

                    if (row.textContent.includes(prizeName)) {
                        row.classList.add('highlight-row');
                    }
                });
            }

            // 事件监听
            startBtn.addEventListener('click', startLottery);

            // 初始化
            initDisplay();
            initProbabilityTable();
        });
    </script>
</body>
</html>