onClipEvent(load){
    timer = 0;
    i = 0;
}

onClipEvent(enterFrame){
    if(timer > 0){
        timer--;
    }

    if(Key.isDown(Key.LEFT)){
        _x -= 6;
    }else if(Key.isDown(Key.RIGHT)){
        _x += 6;
    }

    if(Key.isDown(Key.SPACE)){
        if(timer == 0){
            _root.attachMovie("bullet", "bullet"+i, _root.getNextHighestDepth());
            _root["bullet"+i]._x = _x;
            _root["bullet"+i]._y = _y-20;

            _root["bullet"+i].onEnterFrame = function(){
                this._y -= 10;
                if(this._y < -30){
                    this.removeMovieClip();
                }

                for(k = 0; k < _root.enemies.length; k++){
                    if(this.hitTest(_root[_root.enemies[k]])){
                        _root.score += 10;
                        this.removeMovieClip();
                        _root[_root.enemies[k]].removeMovieClip();
                        _root.enemies.splice(k, 1);
                    }
                }
            }

            i++;
            timer = 20;
        }
    }
}