HTML5 推箱子游戏过关演示动画

点击下面链接可看动画：
http://www.108js.com/article/article3/zip1/exam/a.html

效果图：

代码：

 var canvas = document.getElementById("gameBox");
  var context = canvas.getContext("2d");
var imglen = 14; //需预加载的图片数量
/*游戏主对象*/
var FlGame = {
    grade : 2, //关卡
    loadImgLen : 0, //已加载的图片数量
    imgList : {},//缓存所有图像
    map : [],//地图数据
    timer : null, //计时器
    girlPos : [], //女孩的位置
    girlDirec : "down", //女孩当前的朝向（默认正面朝下）
    girlFrame : 0, //女孩动画第N帧，共两帧
    MoveTimes:0,//移动次数 
    UseTime:0,
    lastTime:0,
    msg: document.getElementById("msg"),
    setp:-1,//移动步数
    result:[],//过关答案
    init : function(){ //入口
        this.result=getSuccess(this.grade).split("");
        this.getMap(this.grade);
        this.draw();
        this.lastTime= Date.now();
        this.run();
   
    },
    getMap : function(_mapIndex){
        this.map = getMap(_mapIndex);
    },
    draw : function(){ //绘制主对象
        this.clearCanvas();
        this.drawMap();
        this.drawGirl();
        this.showMoveInfo();
    },

    // 游戏主循环
    run : function(){ //运行帧
          var now = Date.now();
          var dt = (now - this.lastTime) / 1000.0;
          this.update(dt);//更新
          this.draw();
         this.lastTime = now;
         var that = this;
        
         this.timer =  setTimeout(function(){
           that.run();
         },1000)    
    },

    // 更新游戏对象
    update: function(dt) {
     this.UseTime += dt;
     this.readText(dt);
    },

    readText:function(dt){
      var sc=this.getSetp();
      if(sc=="d"){
         this.girlPos[0]+=1;
         this.girlPos[1]+=0;
         this.girlDirec ="down";

         this.MoveTimes++;
      }
     if(sc=="u"){
         this.girlPos[0]+=-1;
         this.girlPos[1]+=0;
         this.girlDirec ="up";
         this.MoveTimes++;
      }
      if(sc=="l"){
         this.girlPos[0]+=0;
         this.girlPos[1]+=-1;
         this.girlDirec ="left";
         this.MoveTimes++;
      }
     if(sc=="r"){
         this.girlPos[0]+=0;
         this.girlPos[1]+=+1;
         this.girlDirec ="right";
         this.MoveTimes++;
      }

      if(sc=="D"){
         this.girlPos[0]+=1;
         this.girlPos[1]+=0;
         this.girlDirec ="down";
         this.MoveTimes++;
       if(this.map[this.girlPos[0]][this.girlPos[1]]==6)//人的位置是带花的花盆
            this.map[this.girlPos[0]][this.girlPos[1]] = 4;//留下花
        else
            this.map[this.girlPos[0]][this.girlPos[1]] = 3;

        if( this.map[this.girlPos[0]+1][this.girlPos[1]] ==4)
          this.map[this.girlPos[0]+1][this.girlPos[1]] = 6;
        else
            this.map[this.girlPos[0]+1][this.girlPos[1]] = 5;

      }

       if(sc=="U"){
         this.girlPos[0]+=-1;
         this.girlPos[1]+=0;
         this.girlDirec ="up";
         this.MoveTimes++;
        if(this.map[this.girlPos[0]][this.girlPos[1]]==6)//人的位置是带花的花盆
            this.map[this.girlPos[0]][this.girlPos[1]] = 4;//留下花
        else
            this.map[this.girlPos[0]][this.girlPos[1]] = 3;
        if( this.map[this.girlPos[0]-1][this.girlPos[1]] ==4)
            this.map[this.girlPos[0]-1][this.girlPos[1]] = 6;
         else
            this.map[this.girlPos[0]-1][this.girlPos[1]] = 5;
      }
        if(sc=="R"){
         this.girlPos[0]+=0;
         this.girlPos[1]+=1;
         this.girlDirec ="right";
         this.MoveTimes++;
        if(this.map[this.girlPos[0]][this.girlPos[1]]==6)//人的位置是带花的花盆
              this.map[this.girlPos[0]][this.girlPos[1]] = 4;//留下花
        else
            this.map[this.girlPos[0]][this.girlPos[1]] = 3;


         if( this.map[this.girlPos[0]][this.girlPos[1]+1] ==4)
            this.map[this.girlPos[0]][this.girlPos[1]+1] = 6;
         else
            this.map[this.girlPos[0]][this.girlPos[1]+1] = 5;

      }
      if(sc=="L"){
         this.girlPos[0]+=0;
         this.girlPos[1]+=-1;
         this.girlDirec ="left";
         this.MoveTimes++;
         if(this.map[this.girlPos[0]][this.girlPos[1]]==6)//人的位置是带花的花盆
            this.map[this.girlPos[0]][this.girlPos[1]] = 4;//留下花
        else
            this.map[this.girlPos[0]][this.girlPos[1]] = 3;
        if( this.map[this.girlPos[0]][this.girlPos[1]-1] ==4)
            this.map[this.girlPos[0]][this.girlPos[1]-1] = 6;
         else
            this.map[this.girlPos[0]][this.girlPos[1]-1] = 5;

      }

   },
   getSetp:function(){
      this.setp++;
     if(this.setp==this.result.length) {
         return 0;
     }
     return this.result[this.setp];
   },
   drawMap : function(){
        var mapBg = context.createPattern(this.imgList.map_bg,"repeat");
        context.save();
        context.fillStyle = mapBg;
        context.fillRect(0,0,667,519);
        context.restore();
        for(var i=0;i<this.map.length;i++){
          for(var j=0;j<this.map[i].length;j++){
             if(this.map[i][j]!=1){
                var x = (j+1)*1+j*36;
                var y = (i+1)*1+i*36;
                if(this.map[i][j]==9){//人物位置,在人的位置要绘底图
                     this.map[i][j] = 3;
                     if(this.girlPos.length==0){ //初始化时，取一次人物的初始坐标
                          this.girlPos = [i,j];
                     }
                }
                var mapFlag = this.map[i][j];
                context.drawImage(this.imgList["map_"+mapFlag],x,y);
            }
         }
      }
    },
    drawGirl :function(){ //女孩,direc方向
        this.girlFrame = this.girlFrame==0?1:0;
        var i = this.girlPos[0];
        var j = this.girlPos[1];
        var x = (j+1)*1+j*36+3;
        var y = (i+1)*1+i*36-4;
        context.drawImage(this.imgList["npc_"+this.girlDirec+"_"+this.girlFrame],x,y);
    },
   
    showMoveInfo:function()
    {  
	this.msg.innerHTML="第"+(this.grade)+"关 移动次数："+this.MoveTimes+" 用时:"+Math.floor(this.UseTime);
   },
   stop : function(){ //停止
        clearInterval(this.timer);
    },
    clearCanvas : function(){ //清空画布
        canvas.width=0;
        canvas.width=667;
    },
   
    imgOnload : function(img){
        FlGame.loadImgLen++;
        FlGame.imgList[img.picname] = img;
        if(FlGame.loadImgLen==imglen){
            FlGame.init();//所有图片加载后启动动画
        }
    }
};
//加载所属图片
(function(){
    var imgList = { //加载的清单
        map_bg:"images/map_bg.png",
        map_2:"images/map_2.jpg",
        map_3:"images/map_3.jpg",
        map_4:"images/map_4.jpg",
        map_5:"images/map_5.jpg",
        map_6:"images/map_6.jpg",
        npc_down_0:"images/npc_down_0.png",
        npc_down_1:"images/npc_down_1.png",
        npc_up_0:"images/npc_up_0.png",
        npc_up_1:"images/npc_up_1.png",
        npc_left_0:"images/npc_left_0.png",
        npc_left_1:"images/npc_left_1.png",
        npc_right_0:"images/npc_right_0.png",
        npc_right_1:"images/npc_right_1.png"
    };
    for(name in imgList){
        var img = new Image();
        img.src = imgList[name];
        img.picname = name;
        img.onload =function(){ FlGame.imgOnload(this);}
        img.onerror = function(e){
            alert("资源加载时发生错误！"+this.src);
        }
    }
})();

全部代码请下载。
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http://www.108js.com/example.html