//AS2.0

var mc = this.createEmptyMovieClip("mc", 0); //建立一個空白mc在層級0

for (var i = 0; i

var mf = mc.attachMovie("mf", "mf"+i, i); //在mc內迴圈建立40個空白mc，名字為mf0 - mf39

mf.vr = 0; //mf例項的自定義屬性vr 以下類同 vy sdy sdx vx等

mf.vy = 0;

mf.sdy = Math.random()/2;

mf.sdx = Math.random();

mf.vx = 0;

random(2) == 0 ? mf.sj=1 : mf.sj=-1; //產生一個隨機值 判斷是否為0，根據情況賦值mf例項的自定義屬性sj為正負1

mf._x = random(550); //隨機設定mf例項的x y 座標

mf._y = random(300);

mf._xscale = mf._yscale=random(70)+20; //隨機縮放比例為%20 - %90

mf.sj

mf.mcl = 0.8;

mf.swapDepths(mf._xscale*1000+i); //設定mf例項的層級分佈在 正負1000+(0至39) 這個範圍的層級內

mf.onEnterFrame = function() {

this.vr += 0.03;

this._y += Math.cos(this.vr)*this.vy*this.sj;

this._x -= this.vx*this.sj;

this.vy *= this.mcl;

this.vx *= this.mcl;

this.vy += this.sdy;

this.vx += this.sdx;

var ID = Math.random()*30 >> 0;

ID == 1 && (this.mcl=0.9);

ID == 2 && (this.mcl=0.7);

ID == 3 && (this.mcl=0.5);

ID == 4 && (this.yj.play());

this._x

this._x>550 && (this._x=0);

};

}