html如何让一张图片动起来,关于canvas动画怎么让里面的图片动起来？

body{margin: 0; padding: 0;}

var w=$(window).width();

var h=$(window).height();

var c=document.getElementById("canvas");

c.width=w;

c.height=h-60;

var ctx=c.getContext("2d");

var img=new Image();

var img1=new Image();

var hua=new Image();

img.src="img/yueliang.png";

img1.src="img/s1.png"

hua.src="img/hua3.png"

img.οnlοad=function(){

ctx.drawImage(img,0,0,w,w/2.05)

ctx.drawImage(img1,0,200,w,w/1.25)

so(0,900)

}

function so(x,y){

ctx.drawImage(hua,x,y)

}

var x=0,y=0

setInterval(function(){

x+=5;

y+=5;

},100)