麻将小程序搭建教程：星力房卡麻将源码从环境配置到上线全流程

// app.js
App({
  onLaunch: function () {
    if (!wx.cloud) {
      console.error('请使用 2.2.3 或以上的基础库以使用云能力');
    } else {
      wx.cloud.init({
        // env 参数说明：
        //   env 参数决定接下来云开发调用（云函数、云存储）时默认使用的环境
        //   此处填入你的云环境 ID
        env: 'your-env-id',  // 替换成你自己的环境ID
        traceUser: true,
      });
    }
    this.globalData = {};
  }
});

// cloudfunctions/gameLogic/index.js
const cloud = require('wx-server-sdk');
cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV });
const db = cloud.database();

// 洗牌算法 —— 实际项目中会用更复杂的随机种子，此处只展示骨架
function shuffle(arr) {
  let i = arr.length;
  while (i) {
    const j = Math.floor(Math.random() * i--);
    [arr[i], arr[j]] = [arr[j], arr[i]];
  }
  return arr;
}

// 创建房间
async function createRoom(roomId, creatorOpenId, rule) {
  const roomColl = db.collection('rooms');
  const tiles = shuffle([...Array(108).keys()]); // 108张牌模拟
  const roomData = {
    roomId,
    creator: creatorOpenId,
    players: [{ openId: creatorOpenId, handTiles: tiles.slice(0,13) }],
    remainTiles: tiles.slice(13),
    status: 'waiting',  // waiting, playing, finished
    rule,
    createdAt: new Date()
  };
  await roomColl.add({ data: roomData });
  return roomData;
}

// 主入口：云函数调用路由
exports.main = async (event, context) => {
  const { action, data } = event;
  const wxContext = cloud.getWXContext();
  const openId = wxContext.OPENID;

  switch (action) {
    case 'createRoom':
      return await createRoom(data.roomId, openId, data.rule);
    // 其他 action: joinRoom, playTile, huTile...
    default:
      return { code: -1, msg: '未知操作' };
  }
};

// cloudfunctions/adminGenerateCards/index.js
const cloud = require('wx-server-sync');
cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV });
const db = cloud.database();

exports.main = async (event, context) => {
  const { count, point } = event;  // 生成数量、每张房卡点数
  const wxContext = cloud.getWXContext();

  // 1. 校验管理员身份（可以从数据库 adminUsers 集合查）
  const adminRes = await db.collection('adminUsers')
    .where({ openId: wxContext.OPENID })
    .get();
  if (adminRes.data.length === 0) {
    return { code: -1, msg: '非管理员操作' };
  }

  // 2. 批量生成房卡记录，每张生成唯一卡密
  const cards = [];
  for (let i = 0; i < count; i++) {
    const cardNo = 'MF' + Date.now().toString(36).toUpperCase() + Math.random().toString(36).substr(2, 6).toUpperCase();
    cards.push({
      cardNo,
      point,      // 对应可开房间的次数或时长
      status: 'unused',
      createdBy: wxContext.OPENID,
      createdAt: new Date()
    });
  }
  await db.collection('roomCards').add({ data: cards });

  return { code: 0, data: cards };
};

wx.cloud.callFunction({
  name: 'adminGenerateCards',
  data: { count: 50, point: 1 }
}).then(res => {
  console.log('生成房卡成功', res.result.data);
});

// pages/lobby/lobby.js
Page({
  data: { rooms: [] },
  onLoad() {
    this.loadRooms();
  },
  async loadRooms() {
    const db = wx.cloud.database();
    const res = await db.collection('rooms')
      .where({ status: 'waiting' })
      .limit(20)
      .get();
    this.setData({ rooms: res.data });
  },
  // 创建房间
  async createRoom() {
    wx.cloud.callFunction({
      name: 'gameLogic',
      data: {
        action: 'createRoom',
        data: { roomId: Date.now().toString(36), rule: {} }
      }
    }).then(res => {
      // 拿到返回的 roomId，跳转到房间等待页面
      wx.navigateTo({ url: `/pages/room/room?roomId=${res.result.roomId}` });
    });
  }
});

// 在 room 页面 onLoad 里
const db = wx.cloud.database();
const watcher = db.collection('rooms')
  .where({ roomId: this.data.roomId })
  .watch({
    onChange: (snapshot) => {
      // 每次房间数据变化（有人出牌、有人胡牌）都会触发
      const room = snapshot.docs[0];
      this.renderGameState(room);
    },
    onError: (err) => {
      console.error('监听失败', err);
    }
  });

// 玩家点击出牌按钮
playTile(tile) {
  wx.cloud.callFunction({
    name: 'gameLogic',
    data: {
      action: 'playTile',
      data: {
        roomId: this.data.roomId,
        tile: tile
      }
    }
  }).then(res => {
    // 服务端会更新 rooms 集合，watch 自动推送新的牌局状态
    if (res.result.code !== 0) {
      wx.showToast({ title: res.result.msg, icon: 'none' });
    }
  });
}