AS2 to AS3?

I think I'm quite good with AS2 now, and I want to learn AS3.
I know AS3 only works on the main timeline, but here is a code I'd like to see in AS3. I hope it isn't too complicated.

Code:

---

onClipEvent (load) {
        var mousecontrol:Boolean = false;
}
onClipEvent (mouseDown) {
        mousecontrol = true;
}
onClipEvent (mouseUp) {
        mousecontrol = false;
}
onClipEvent (mouseMove) {
        this._rotation = Math.atan2 (_root._ymouse - this._y, _root._xmouse - this._x) * 57.2;
}
onClipEvent (enterFrame) {
        if (mousecontrol == true) {
                if (Math.sqrt ((_root._xmouse - this._x) * (_root._xmouse - this._x) + (_root._ymouse - this._y) * (_root._ymouse - this._y)) > 50) {
                        this._x += 2 * Math.cos (this._rotation / 57.2);
                        this._y += 2 * Math.sin (this._rotation / 57.2);
                }
        } else {
                if (Key.isDown (Key.LEFT) && Key.isDown (Key.UP)) {
                        this._rotation = -135;
                        this._x--;
                        this._y--;
                } else if (Key.isDown (Key.LEFT) && Key.isDown (Key.DOWN)) {
                        this._rotation = 135;
                        this._x--;
                        this._y++;
                } else if (Key.isDown (Key.RIGHT) && Key.isDown (Key.UP)) {
                        this._rotation = -45;
                        this._x++;
                        this._y--;
                } else if (Key.isDown (Key.RIGHT) && Key.isDown (Key.DOWN)) {
                        this._rotation = +45;
                        this._x++;
                        this._y++;
                } else if (Key.isDown (Key.LEFT)) {
                        this._rotation = 180;
                        this._x -= 2;
                } else if (Key.isDown (Key.RIGHT)) {
                        this._rotation = 0;
                        this._x += 2;
                } else if (Key.isDown (Key.UP)) {
                        this._rotation = -90;
                        this._y -= 2;
                } else if (Key.isDown (Key.DOWN)) {
                        this._rotation = 90;
                        this._y += 2;
                }
        }
}

---

for Key.isDown, see this post

http://board.flashkit.com/board/showthread.php?t=798096

as for the mouse/EnterFrame events, look up addEventListener in the documentation.

basically you do

Code:

---

objectThatListens.addEventListener(EventName, functionToRun, false, 0, true)

---

The extra parameters are an extra precaution for memory leaks when you remove the listener.

Code:

---

public function functionToRun(e:Event){
...
}

---

replace e:Event with the type of Event you are listening for. All of this is listed in the documentation.