545 lines
18 KiB
JavaScript
Executable File
545 lines
18 KiB
JavaScript
Executable File
class SnakeGame {
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constructor() {
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this.canvas = document.getElementById('gameCanvas');
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this.ctx = this.canvas.getContext('2d');
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// 游戏配置
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this.gridSize = 20;
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this.tileCount = this.canvas.width / this.gridSize;
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this.tileCountY = this.canvas.height / this.gridSize;
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// 蛇的初始状态
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this.snake = [
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{x: 10, y: 10},
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{x: 9, y: 10},
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{x: 8, y: 10}
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];
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// 食物位置
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this.food = {x: 15, y: 15};
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// 游戏状态
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this.dx = 1; // 初始向右移动
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this.dy = 0;
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this.score = 0;
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this.level = 1;
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this.gameSpeed = 6.5; // 初始速度 (10 * 0.65)
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this.gameOver = false;
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this.startTime = Date.now();
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this.foodEaten = 0;
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// 特殊食物
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this.specialFood = null;
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this.specialFoodTimer = 0;
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this.specialFoodDuration = 5000; // 5秒
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this.init();
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}
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// 根据分数计算权重（权重越高，越容易触发且数量偏大）
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calculateWeightByScore(score) {
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const w = score / 100; // 1000分趋近高权重
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return Math.max(0.1, Math.min(0.95, w));
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}
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// 权重偏向的随机整数，weight越大越偏向更大值
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biasedRandomInt(maxInclusive, weight) {
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const r = Math.random();
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const biased = Math.pow(r, 1 - weight);
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const val = Math.floor(biased * (maxInclusive + 1));
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return Math.max(0, Math.min(maxInclusive, val));
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}
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// 在排行榜弹层追加结束信息
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appendEndInfo(text, type = 'info') {
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const summary = document.getElementById('leaderboardSummary');
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if (!summary) return;
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const info = document.createElement('div');
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info.style.marginTop = '8px';
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info.style.fontSize = '14px';
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info.style.color = type === 'error' ? '#d9534f' : (type === 'success' ? '#28a745' : '#333');
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info.textContent = text;
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summary.appendChild(info);
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}
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// 游戏结束后尝试加“萌芽币”
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async tryAwardCoinsOnGameOver() {
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try {
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const token = localStorage.getItem('token');
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if (!token) {
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this.appendEndInfo('未登录，无法获得萌芽币');
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return;
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}
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let email = null;
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try {
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const userStr = localStorage.getItem('user');
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if (userStr) {
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const userObj = JSON.parse(userStr);
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email = userObj && (userObj.email || userObj['邮箱']);
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}
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} catch (_) {}
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if (!email) {
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this.appendEndInfo('未找到账户信息（email），无法加币', 'error');
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return;
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}
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const weight = this.calculateWeightByScore(this.score);
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let coins = 0;
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let guaranteed = false;
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// 得分大于400必定触发获得1-5个萌芽币
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if (this.score > 5) {
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guaranteed = true;
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coins = Math.floor(Math.random() * 5) + 1; // 1~5
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} else {
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// 使用权重作为概率
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const roll = Math.random();
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if (roll > weight) {
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this.appendEndInfo('本局未获得萌芽币');
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return;
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}
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// 生成0~10随机数量（权重越高越偏向更大）
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coins = this.biasedRandomInt(10, weight);
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coins = Math.max(0, Math.min(10, coins));
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if (coins <= 0) {
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this.appendEndInfo('本局未获得萌芽币');
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return;
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}
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}
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// 后端 API base（优先父窗口ENV_CONFIG）
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const apiBase = (window.parent && window.parent.ENV_CONFIG && window.parent.ENV_CONFIG.API_URL)
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? window.parent.ENV_CONFIG.API_URL
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: ((window.ENV_CONFIG && window.ENV_CONFIG.API_URL) ? window.ENV_CONFIG.API_URL : 'http://127.0.0.1:5002');
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const resp = await fetch(`${apiBase}/api/user/add-coins`, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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'Authorization': `Bearer ${token}`
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},
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body: JSON.stringify({ email, amount: coins })
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});
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if (!resp.ok) {
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const err = await resp.json().catch(() => ({}));
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const msg = err && (err.message || err.error) ? (err.message || err.error) : `请求失败(${resp.status})`;
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this.appendEndInfo(`加币失败：${msg}`, 'error');
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return;
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}
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const data = await resp.json();
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if (data && data.success) {
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const newCoins = data.data && data.data.new_coins;
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this.appendEndInfo(`恭喜获得 ${coins} 个萌芽币！当前余额：${newCoins}`, 'success');
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} else {
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const msg = (data && (data.message || data.error)) || '未知错误';
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this.appendEndInfo(`加币失败：${msg}`, 'error');
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}
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} catch (e) {
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console.error('加币流程发生错误:', e);
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this.appendEndInfo('加币失败：网络或系统错误', 'error');
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}
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}
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init() {
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this.generateFood();
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this.gameLoop();
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// 监听键盘事件
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document.addEventListener('keydown', (e) => {
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if (this.gameOver) return;
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switch(e.key) {
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case 'ArrowUp':
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case 'w':
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case 'W':
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if (this.dy === 0) {
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this.dx = 0;
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this.dy = -1;
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}
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break;
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case 'ArrowDown':
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case 's':
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case 'S':
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if (this.dy === 0) {
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this.dx = 0;
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this.dy = 1;
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}
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break;
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case 'ArrowLeft':
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case 'a':
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case 'A':
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if (this.dx === 0) {
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this.dx = -1;
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this.dy = 0;
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}
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break;
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case 'ArrowRight':
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case 'd':
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case 'D':
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if (this.dx === 0) {
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this.dx = 1;
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this.dy = 0;
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}
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break;
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case ' ':
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this.togglePause();
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break;
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}
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});
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}
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generateFood() {
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// 生成普通食物
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let newFood;
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do {
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newFood = {
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x: Math.floor(Math.random() * this.tileCount),
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y: Math.floor(Math.random() * this.tileCountY)
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};
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} while (this.isPositionOccupied(newFood));
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this.food = newFood;
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// 有10%几率生成特殊食物
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if (Math.random() < 0.1 && !this.specialFood) {
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this.generateSpecialFood();
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}
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}
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generateSpecialFood() {
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let newFood;
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do {
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newFood = {
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x: Math.floor(Math.random() * this.tileCount),
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y: Math.floor(Math.random() * this.tileCountY),
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type: 'special',
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value: 5 // 特殊食物价值5分
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};
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} while (this.isPositionOccupied(newFood));
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this.specialFood = newFood;
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this.specialFoodTimer = Date.now();
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}
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isPositionOccupied(position) {
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// 检查是否与蛇身重叠
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for (let segment of this.snake) {
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if (segment.x === position.x && segment.y === position.y) {
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return true;
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}
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}
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// 检查是否与普通食物重叠
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if (this.food && this.food.x === position.x && this.food.y === position.y) {
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return true;
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}
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// 检查是否与特殊食物重叠
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if (this.specialFood && this.specialFood.x === position.x && this.specialFood.y === position.y) {
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return true;
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}
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return false;
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}
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update() {
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if (this.isPaused || this.gameOver) return;
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// 更新蛇头位置
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const head = {x: this.snake[0].x + this.dx, y: this.snake[0].y + this.dy};
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// 检查游戏结束条件
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if (this.checkCollision(head)) {
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this.gameOver = true;
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this.showGameOver();
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return;
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}
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// 移动蛇
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this.snake.unshift(head);
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// 检查是否吃到食物
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if (head.x === this.food.x && head.y === this.food.y) {
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this.score += 1;
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this.foodEaten++;
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this.generateFood();
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this.updateLevel();
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} else if (this.specialFood && head.x === this.specialFood.x && head.y === this.specialFood.y) {
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this.score += this.specialFood.value;
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this.foodEaten++;
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this.specialFood = null;
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this.generateFood();
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this.updateLevel();
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} else {
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this.snake.pop(); // 如果没有吃到食物，移除尾部
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}
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// 检查特殊食物超时
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if (this.specialFood && Date.now() - this.specialFoodTimer > this.specialFoodDuration) {
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this.specialFood = null;
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}
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// 更新UI
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this.updateUI();
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}
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checkCollision(head) {
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// 检查撞墙
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if (head.x < 0 || head.x >= this.tileCount || head.y < 0 || head.y >= this.tileCountY) {
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return true;
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}
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// 检查撞到自己（从第4节开始检查，避免误判）
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for (let i = 4; i < this.snake.length; i++) {
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if (this.snake[i].x === head.x && this.snake[i].y === head.y) {
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return true;
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}
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}
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return false;
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}
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updateLevel() {
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// 每吃5个食物升一级
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const newLevel = Math.floor(this.foodEaten / 5) + 1;
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if (newLevel > this.level) {
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this.level = newLevel;
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this.gameSpeed = Math.min(13, 6.5 + this.level * 0.65); // 速度上限13 (20 * 0.65)
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}
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}
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updateUI() {
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document.getElementById('score').textContent = this.score;
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document.getElementById('length').textContent = this.snake.length;
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document.getElementById('level').textContent = this.level;
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}
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draw() {
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// 清空画布
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this.ctx.fillStyle = '#222';
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this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);
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// 绘制网格（背景）
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this.ctx.strokeStyle = '#333';
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this.ctx.lineWidth = 0.5;
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for (let x = 0; x < this.tileCount; x++) {
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for (let y = 0; y < this.tileCountY; y++) {
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this.ctx.strokeRect(x * this.gridSize, y * this.gridSize, this.gridSize, this.gridSize);
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}
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}
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// 绘制蛇
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this.snake.forEach((segment, index) => {
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if (index === 0) {
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// 蛇头
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this.ctx.fillStyle = '#4CAF50';
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} else {
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// 蛇身，渐变颜色
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const gradient = (index / this.snake.length) * 100;
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this.ctx.fillStyle = `hsl(120, 80%, ${60 - gradient}%)`;
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}
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this.ctx.fillRect(segment.x * this.gridSize, segment.y * this.gridSize, this.gridSize, this.gridSize);
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// 边框
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this.ctx.strokeStyle = '#2E7D32';
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this.ctx.strokeRect(segment.x * this.gridSize, segment.y * this.gridSize, this.gridSize, this.gridSize);
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});
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// 绘制普通食物
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this.ctx.fillStyle = '#FF5252';
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this.ctx.beginPath();
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this.ctx.arc(
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this.food.x * this.gridSize + this.gridSize / 2,
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this.food.y * this.gridSize + this.gridSize / 2,
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this.gridSize / 2 - 2,
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0,
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Math.PI * 2
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);
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this.ctx.fill();
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// 绘制特殊食物（如果存在）
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if (this.specialFood) {
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this.ctx.fillStyle = '#FFD700';
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this.ctx.beginPath();
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this.ctx.arc(
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this.specialFood.x * this.gridSize + this.gridSize / 2,
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this.specialFood.y * this.gridSize + this.gridSize / 2,
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this.gridSize / 2 - 1,
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0,
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Math.PI * 2
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);
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this.ctx.fill();
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// 闪烁效果
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const time = Date.now() - this.specialFoodTimer;
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const alpha = 0.5 + 0.5 * Math.sin(time / 200);
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this.ctx.globalAlpha = alpha;
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this.ctx.fillStyle = '#FF6B00';
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this.ctx.fill();
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this.ctx.globalAlpha = 1;
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}
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// 绘制暂停状态
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if (this.isPaused) {
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this.ctx.fillStyle = 'rgba(0, 0, 0, 0.7)';
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this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);
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this.ctx.fillStyle = 'white';
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this.ctx.font = '24px Arial';
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this.ctx.textAlign = 'center';
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this.ctx.fillText('游戏暂停', this.canvas.width / 2, this.canvas.height / 2);
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}
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}
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gameLoop() {
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this.update();
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this.draw();
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if (!this.gameOver) {
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setTimeout(() => this.gameLoop(), 1000 / this.gameSpeed);
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}
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}
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changeDirection(dx, dy) {
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if (this.gameOver) return;
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// 防止180度转弯
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if ((this.dx !== 0 && dx !== 0) || (this.dy !== 0 && dy !== 0)) {
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return;
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}
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this.dx = dx;
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this.dy = dy;
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}
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// 工具：格式化日期为 YYYY-MM-DD
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formatDate(date = new Date()) {
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const y = date.getFullYear();
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const m = String(date.getMonth() + 1).padStart(2, '0');
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const d = String(date.getDate()).padStart(2, '0');
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return `${y}-${m}-${d}`;
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}
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showGameOver() {
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// 构建并展示排行榜弹层
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const gameTime = Math.floor((Date.now() - this.startTime) / 1000);
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const overlay = document.getElementById('leaderboardOverlay');
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const listEl = document.getElementById('leaderboardList');
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const lbScore = document.getElementById('lbScore');
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const lbLength = document.getElementById('lbLength');
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const lbLevel = document.getElementById('lbLevel');
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const lbGameTime = document.getElementById('lbGameTime');
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const lbRank = document.getElementById('lbRank');
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if (!overlay || !listEl) {
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console.warn('排行榜容器不存在');
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return;
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}
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// 汇总当前玩家数据
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lbScore.textContent = this.score;
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lbLength.textContent = this.snake.length;
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lbLevel.textContent = this.level;
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lbGameTime.textContent = `${gameTime}秒`;
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const currentEntry = {
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"名称": localStorage.getItem('snakePlayerName') || '我',
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"账号": localStorage.getItem('snakePlayerAccount') || 'guest@local',
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"分数": this.score,
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"时间": this.formatDate(new Date()),
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__isCurrent: true,
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__duration: gameTime
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};
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// 合并并排序数据（使用 gamedata.js 中的 playerdata）
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const baseData = (typeof playerdata !== 'undefined' && Array.isArray(playerdata)) ? playerdata : [];
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const merged = [...baseData, currentEntry];
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merged.sort((a, b) => (b["分数"] || 0) - (a["分数"] || 0));
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const playerIndex = merged.findIndex(e => e.__isCurrent);
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lbRank.textContent = playerIndex >= 0 ? `#${playerIndex + 1}` : '—';
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// 生成排行榜（TOP 10）
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const topList = merged.slice(0, 10).map((entry, idx) => {
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const isCurrent = !!entry.__isCurrent;
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const name = entry["名称"] ?? '未知玩家';
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const score = entry["分数"] ?? 0;
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const dateStr = entry["时间"] ?? '';
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const timeStr = isCurrent ? `时长:${entry.__duration}秒` : `时间:${dateStr}`;
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return `
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<div class="leaderboard-item ${isCurrent ? 'current-player' : ''}">
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<span class="rank">#${idx + 1}</span>
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<span class="player-name">${name}</span>
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<span class="player-score">${score}分</span>
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<span class="player-time">${timeStr}</span>
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</div>
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`;
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}).join('');
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listEl.innerHTML = topList;
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overlay.style.display = 'flex';
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// 结束时尝试加币（异步，不阻塞UI）
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this.tryAwardCoinsOnGameOver();
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// 触发游戏结束事件（供统计模块使用）
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const gameOverEvent = new CustomEvent('gameOver', {
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detail: {
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score: this.score,
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length: this.snake.length,
|
||
level: this.level,
|
||
gameTime: gameTime,
|
||
foodEaten: this.foodEaten
|
||
}
|
||
});
|
||
document.dispatchEvent(gameOverEvent);
|
||
|
||
// 绑定重新开始按钮
|
||
const restartBtn = document.getElementById('leaderboardRestartBtn');
|
||
if (restartBtn) {
|
||
restartBtn.onclick = () => {
|
||
overlay.style.display = 'none';
|
||
this.restart();
|
||
};
|
||
}
|
||
}
|
||
|
||
|
||
|
||
restart() {
|
||
this.snake = [
|
||
{x: 10, y: 10},
|
||
{x: 9, y: 10},
|
||
{x: 8, y: 10}
|
||
];
|
||
this.dx = 1;
|
||
this.dy = 0;
|
||
this.score = 0;
|
||
this.level = 1;
|
||
this.gameSpeed = 6.5;
|
||
this.gameOver = false;
|
||
this.startTime = Date.now();
|
||
this.foodEaten = 0;
|
||
this.specialFood = null;
|
||
|
||
// 隐藏排行榜弹层（若可见）
|
||
const overlay = document.getElementById('leaderboardOverlay');
|
||
if (overlay) overlay.style.display = 'none';
|
||
|
||
this.generateFood();
|
||
this.updateUI();
|
||
|
||
this.gameLoop();
|
||
}
|
||
}
|
||
|
||
// 全局游戏实例
|
||
let game;
|
||
|
||
document.addEventListener('DOMContentLoaded', () => {
|
||
game = new SnakeGame();
|
||
}); |