翻译一下一段Flash代码，又追加分至少50分，能解释多少就解释多少

Question

#initclip 1
function PoolClass()
{
this.stick = {x: 300, y: 169};
this.onEnterFrame = this.dragStick;
} // End of the function
PoolClass.prototype = new MovieClip();
PoolClass.prototype.dragStick = function ()
{
if (this.stick.x < 0)
{
this.stick.vx = this.stick.vx + 4 * Math.random();
}
else if (this.stick.x > 600)
{
this.stick.vx = this.stick.vx - 4 * Math.random();
}
else
{
this.stick.vx = this.stick.vx + (Math.random() - Math.random()) * 4;
} // end else if
if (this.stick.y < 0)
{
this.stick.vy = this.stick.vy + 4 * Math.random();
}
else if (this.stick.y > 337)
{
this.stick.vy = this.stick.vy - 4 * Math.random();
}
else
{
this.stick.vy = this.stick.vy + (Math.random() - Math.random()) * 4;
} // end else if
this.stick.x = this.stick.x + this.stick.vx;
this.stick.y = this.stick.y + this.stick.vy;
this.stick.vx = this.stick.vx * 8.000000E-001;
this.stick.vy = this.stick.vy * 8.000000E-001;
this.createNode(random(600), random(337), this.stick.x, this.stick.y, 7 + random(13));
};
PoolClass.prototype.createRandomNode = function ()
{
var x = random(600);
var y = random(337);
var dx = this._xmouse;
var dy = this._ymouse;
var ds = 10 + random(20);
this.createNode(x, y, dx, dy, ds);
};
PoolClass.prototype.createNode = function (x, y, dx, dy, ds)
{
var nombre = "nd" + String(this.depth++);
var neo = this.attachMovie("node", nombre, this.depth);
neo._x = x;
neo._y = y;
neo.dx = dx;
neo.dy = dy;
neo.body._xscale = ds;
neo.body._yscale = ds;
};
Object.registerClass("pool", PoolClass);
#endinitclip
1楼的不对，不是鼠标跟随效果
是翻译啊，就是每一句的命令都尽量写出来，不是解释效果

Answer 1

应该是一个鼠标跟随的效果吧
主要是 x y轴坐标上的运用！

Answer 2

复制很多影片剪辑

造成类似于星星,下雨等效果