canvas跑步人物动画场景特效

使用方法：

1、head引入js文件

<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/easeljs.min.js"></script>

2、body引入HTML代码

<canvas id="mycanvas" width="800" height="500"></canvas>

<script >
// 图片预加载
function loadImages(sourse,callback){
    var count = 0,
        images = {},
        imgNum = 0;
    for(src in sourse){
        imgNum++
    }
    for(src in sourse){
        images[src] = new Image();
        images[src].onload = function(){
            if(++count >= imgNum){
                callback(images);
            }
        }
        images[src].src = sourse[src];
    }
}
$(document).ready(function(){
    var stage = new createjs.Stage("mycanvas")
    createjs.Ticker.addEventListener("tick", stageBreakHandler);
    // 图片预加载
    var sources = {  
        groundImg : "img/ground.png",  
        hill1 : "img/hill1.png" , 
        hill2 : "img/hill2.png" , 
        ren : "img/ren.png" ,
    }; 
    var sp,ground,hill1,hill2
    loadImages(sources, function(images){   
       // 天空背景
        var sky = new createjs.Shape()
        sky.graphics.beginLinearGradientFill(["#7dcef6","#c1e2f2"],[0, 1], 0, 580, 0, 500).drawRect(0,0,800,500)
        // 山
        hill1 = new createjs.Bitmap(images.hill1)
        hill1.set({x:-300,y:150,alpha:0.5,scaleX:3,scaleY:5});
        hill1.iw = images.hill1.width

        hill2 = new createjs.Bitmap(images.hill2)
        hill2.set({x:210,y:500-220,scaleX:3,scaleY:3});
        hill2.iw = images.hill2.width


        // 地板
        ground = new createjs.Shape()
        ground.graphics.beginBitmapFill(images.groundImg).drawRect(0,0,800+images.groundImg.width,images.groundImg.height)
        ground.y = 500 - images.groundImg.height;
        ground.tileW = images.groundImg.width;


        // 人
        var ss = new createjs.SpriteSheet({
            "images": [images.ren], 
            "frames": {"width":165,"height":292,count:64},
            "animations" : {
                "run": [0,36,"jump",1.5],
                "jump":[36,63,"run"]
            }
        })

        sp = new createjs.Sprite(ss,"run")
        sp.x = 100
        sp.y = 500 - 292 - 79
        stage.addChild(sky,hill1,hill2,ground, sp)
        stage.update();
    }); 
    
    function stageBreakHandler(event){
        // event.delta -- 上一次tick到当前tick的ms
        var deltaS = event.delta / 1000;
        ground.x = (ground.x - deltaS * 150) % ground.tileW;
        hill1.x = (hill1.x - deltaS * 30);
        hill2.x = (hill2.x - deltaS * 30);
        sp.x+=5
        if(sp.x>=800){
            sp.x = 0
            hill1.x = -300;
            hill2.x = 200;
        }
        stage.update();
    }
})
</script>