text: (function () {
      var Game = window.Game = Class.extend({
          init: function (id, resourseUrl) {
              this.resourseUrl = resourseUrl;
              //获得画布ctx对象
              this.canvas = document.getElementById(id);
              this.ctx = this.canvas.getContext("2d");
              //图片路径对象
              this.RobjectTxt = null;
              //图片对象json
              this.Robject = {};
              //帧编号
              this.f = 0;
              this.actors = [];
              //游戏帧编号
              this.gt = 0;
              //鱼数组
              this.fishArr = [];
              this.senceNumber = 0;
              //子弹数组
              this.arrBullet = [];
              //炮弹余量
              this.bulletCount = 10;
              //炮弹信号量
              this.a = 0;
              //总分数
              this.score = 0;
              //背景音乐
              this.bg_music = new Audio();
              //加载资源
              this.loadResource();
          },
          loadResource: function () {
              var self = this;
              //加载图片累加器
              var count = 0;
              //设置页面初始图片加载文字
              self.ctx.font = "28px 微软雅黑";
              self.ctx.textAlign = "center";
              self.ctx.fillText("图片正在加载中.....", 300, self.canvas.height * (1 - 0.618));
              //原生js Ajax请求
              var xhr = new XMLHttpRequest();
              xhr.onreadystatechange = function () {
                  if (xhr.readyState == 4) {
                      if (xhr.status >= 200 && xhr.status < 300 || xhr.status == 304) {
                          //获得图片资源路径txt文件
                          self.RobjectTxt = JSON.parse(xhr.responseText);
                          //图片总数
                          var imageAmount = _.size(self.RobjectTxt);
                          //遍历图片资源路径txt文件，将图片对象设置完src属性并放入图片对象json中
                          for (var k in self.RobjectTxt) {
                              self.Robject[k] = new Image();
                              self.Robject[k].src = ctx+"/assets/"+self.RobjectTxt[k];    //路径拼接
                              //监听图片加载事件
                              self.Robject[k].onload = function () {
                                  count++;
                                  //在画布上显示图片加载进度
                                  self.ctx.clearRect(0, 0, 800, 600);
                                  self.ctx.font = "24px 微软雅黑";
                                  self.ctx.textAlign = "center";
                                  self.ctx.fillStyle = "white";
                                  self.ctx.fillText("图片已经加载到" + count + "/" + imageAmount, 300, self.canvas.height * (1 - 0.618));
                                  //判断是否加载完毕
                                  if (count == imageAmount) {
                                      //开始游戏
                                      self.start();
  
                                  }
                              }
                          }
                      }
                  }
              }
              xhr.open("get", this.resourseUrl, true);
              xhr.send(null);
          },
          start: function () {
              var self = this;
              //new出场景实例 场景管理所有实例上
              this.sence = new Sence();
              this.sence.changeSense(self.senceNumber);
              this.timer = setInterval(function () {
                  self.f++;
                  self.ctx.clearRect(0, 0, 800, 600);
                  //场景管理所有实例update和render方法
                  self.sence.show();
                  self.ctx.font = "26px 微软雅黑";
                  self.ctx.textAlign = "left";
                  self.ctx.fillText("帧编号: " + self.f, 20, 20);
                  if (g.senceNumber == 1) {
                      g.gt += 0.04;
                  }
                  var h = parseInt(g.gt / 360);
                  var m = parseInt((g.gt - parseInt(g.gt / 360) * 360) / 60);
                  var mm = parseInt(g.gt - h * 360 - m * 60);
                  h = h < 10 ? "0" + h : h;
                  m = m < 10 ? "0" + m : m;
                  mm = mm < 10 ? "0" + mm : mm;
                  g.ctx.fillText("游戏时间: " + h + " : " + m + " : " + mm, 250, 70);
              }, 40);
              var self = this;
  
          }
  
      })
  
  
  })()
  
  //计算随机数
  function rnd(m, n) {
      return parseInt(Math.random() * (n - m) + m);
  }