as代碼：

package {

import flash.display.movieclip;

import flash.events.event;

public class main extends movieclip {

public function main() {

}

public function hs(_mc:movieclip) {

var dx:int=10;

var dy:int=10;

var jiaodu:number=math.random()*(2*math.pi);

_mc.addeventlistener(flash.events.event.enter_frame,enter_f);

function enter_f(e:event) {

e.target.x+=math.cos(jiaodu)*dx;

e.target.y+=math.sin(jiaodu)*dy;

if (e.target.x+e.target.width>stage.stagewidth) {

dx*=-1;

e.target.x-=10;

}

if (e.target.x<0) {

dx*=-1;

e.target.x+=10;

}

if (e.target.y+e.target.height>stage.stageheight) {

dy*=-1;

e.target.y-=10;

}

if (e.target.y<0) {

dy*=-1;

e.target.y+=10;

}

}

}

}

}

//

var _mc:mc;

for(var i:uint;i<10;i++){

_mc=new mc();

_mc.x=stage.stagewidth*math.random();

_mc.y=stage.stageheight*math.random();

addchild(_mc);

hs(_mc);

}