幼麟棋牌创建房间逻辑分析

1.用户按下创建按钮

    createRoom: function () {var self = this;var onCreate = function (ret) {if (ret.errcode !== 0) {cc.vv.wc.hide();//console.log(ret.errmsg);if (ret.errcode == 2222) {cc.vv.alert.show("提示", "钻石不足，创建房间失败!");}else {cc.vv.alert.show("提示", "创建房间失败,错误码:" + ret.errcode);}}else {cc.vv.gameNetMgr.connectGameServer(ret);}};var type = this.getType();var conf = null;if (type == 'xzdd') {conf = this.constructSCMJConf();}else if (type == 'xlch') {conf = this.constructSCMJConf();}conf.type = type;var data = {account: cc.vv.userMgr.account,sign: cc.vv.userMgr.sign,conf: JSON.stringify(conf)};console.log(data);cc.vv.wc.show("正在创建房间");cc.vv.http.sendRequest("/create_private_room", data, onCreate);},

请求到大厅服务器的client_service

app.get('/create_private_room',function(req,res){//验证参数合法性var data = req.query;//验证玩家身份if(!check_account(req,res)){return;}var account = data.account;data.account = null;data.sign = null;var conf = data.conf;db.get_user_data(account,function(data){if(data == null){http.send(res,1,"system error");return;}var userId = data.userid;var name = data.name;//验证玩家状态db.get_room_id_of_user(userId,function(roomId){if(roomId != null){http.send(res,-1,"user is playing in room now.");return;}//创建房间room_service.createRoom(account,userId,conf,function(err,roomId){if(err == 0 && roomId != null){room_service.enterRoom(userId,name,roomId,function(errcode,enterInfo){if(enterInfo){var ret = {roomid:roomId,ip:enterInfo.ip,port:enterInfo.port,token:enterInfo.token,time:Date.now()};ret.sign = crypto.md5(ret.roomid + ret.token + ret.time + config.ROOM_PRI_KEY);http.send(res,0,"ok",ret);}else{http.send(res,errcode,"room doesn't exist.");}});}else{http.send(res,err,"create failed.");                    }});});});
});

首先验证玩家信息，然后根据账号获取玩家信息，报货uid和昵称，根据uid获取玩家房间号，如果房间号存在，则给出错误提示，

否则调用room_service的createRoom方法

exports.createRoom = function(account,userId,roomConf,fnCallback){var serverinfo = chooseServer();if(serverinfo == null){fnCallback(101,null);return;}db.get_gems(account,function(data){if(data != null){//2、请求创建房间var reqdata = {userid:userId,gems:data.gems,conf:roomConf};reqdata.sign = crypto.md5(userId + roomConf + data.gems + config.ROOM_PRI_KEY);http.get(serverinfo.ip,serverinfo.httpPort,"/create_room",reqdata,function(ret,data){//console.log(data);if(ret){if(data.errcode == 0){fnCallback(0,data.roomid);}else{fnCallback(data.errcode,null);        }return;}fnCallback(102,null);});   }else{fnCallback(103,null);}});
};

这儿先选择了服务器（具体还没看），然后获取用户的宝石信息，然后提交到游戏服务器的http服务里面

app.get('/create_room',function(req,res){var userId = parseInt(req.query.userid);var sign = req.query.sign;var gems = req.query.gems;var conf = req.query.confif(userId == null || sign == null || conf == null){http.send(res,1,"invalid parameters");return;}var md5 = crypto.md5(userId + conf + gems + config.ROOM_PRI_KEY);if(md5 != req.query.sign){console.log("invalid reuqest.");http.send(res,1,"sign check failed.");return;}conf = JSON.parse(conf);roomMgr.createRoom(userId,conf,gems,serverIp,config.CLIENT_PORT,function(errcode,roomId){if(errcode != 0 || roomId == null){http.send(res,errcode,"create failed.");return; }else{http.send(res,0,"ok",{roomid:roomId});          }});
});

这儿进行了一些验证操作，最终调用到了 roomMgr的createRoom方法

exports.createRoom = function(creator,roomConf,gems,ip,port,callback){if(roomConf.type == null|| roomConf.difen == null|| roomConf.zimo == null|| roomConf.jiangdui == null|| roomConf.huansanzhang == null|| roomConf.zuidafanshu == null|| roomConf.jushuxuanze == null|| roomConf.dianganghua == null|| roomConf.menqing == null|| roomConf.tiandihu == null){callback(1,null);return;}if(roomConf.difen < 0 || roomConf.difen > DI_FEN.length){callback(1,null);return;}if(roomConf.zimo < 0 || roomConf.zimo > 2){callback(1,null);return;}if(roomConf.zuidafanshu < 0 || roomConf.zuidafanshu > MAX_FAN.length){callback(1,null);return;}if(roomConf.jushuxuanze < 0 || roomConf.jushuxuanze > JU_SHU.length){callback(1,null);return;}var cost = JU_SHU_COST[roomConf.jushuxuanze];if(cost > gems){callback(2222,null);return;}var fnCreate = function(){var roomId = generateRoomId();if(rooms[roomId] != null || creatingRooms[roomId] != null){fnCreate();}else{creatingRooms[roomId] = true;db.is_room_exist(roomId, function(ret) {if(ret){delete creatingRooms[roomId];fnCreate();}else{var createTime = Math.ceil(Date.now()/1000);var roomInfo = {uuid:"",id:roomId,numOfGames:0,createTime:createTime,nextButton:0,seats:[],conf:{type:roomConf.type,baseScore:DI_FEN[roomConf.difen],zimo:roomConf.zimo,jiangdui:roomConf.jiangdui,hsz:roomConf.huansanzhang,dianganghua:parseInt(roomConf.dianganghua),menqing:roomConf.menqing,tiandihu:roomConf.tiandihu,maxFan:MAX_FAN[roomConf.zuidafanshu],maxGames:JU_SHU[roomConf.jushuxuanze],creator:creator,}};if(roomConf.type == "xlch"){roomInfo.gameMgr = require("./gamemgr_xlch");}else{roomInfo.gameMgr = require("./gamemgr_xzdd");}console.log(roomInfo.conf);for(var i = 0; i < 4; ++i){roomInfo.seats.push({userId:0,score:0,name:"",ready:false,seatIndex:i,numZiMo:0,numJiePao:0,numDianPao:0,numAnGang:0,numMingGang:0,numChaJiao:0,});}//写入数据库var conf = roomInfo.conf;db.create_room(roomInfo.id,roomInfo.conf,ip,port,createTime,function(uuid){delete creatingRooms[roomId];if(uuid != null){roomInfo.uuid = uuid;console.log(uuid);rooms[roomId] = roomInfo;totalRooms++;callback(0,roomId);}else{callback(3,null);}});}});}}fnCreate();
};

这儿进行了一些房间参数判断，最后就是实际的创建方法

先生成随机的房间号，如果房间或这在创建存在，则重新执行fnCreate(),否则设置正在创建为true,然后查询数据库，看房间是否存在，如果存在，删除正在创建的，重新执行fnCreate()

如果上面条件都满足，根据参数生成对应的游戏管理器，生成四个座位，把信息写入数据库，在回调函数里会返回uuid,删除正在创建的标志，如果uuid存在，增加总房间数，执行回调，否则，执行错误回调

exports.create_room = function(roomId,conf,ip,port,create_time,callback){callback = callback == null? nop:callback;var sql = "INSERT INTO t_rooms(uuid,id,base_info,ip,port,create_time) \VALUES('{0}','{1}','{2}','{3}',{4},{5})";var uuid = Date.now() + roomId;var baseInfo = JSON.stringify(conf);sql = sql.format(uuid,roomId,baseInfo,ip,port,create_time);console.log(sql);query(sql,function(err,row,fields){if(err){callback(null);throw err;}else{callback(uuid);}});
};

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