if (N == 5) {
            if (this._x>500) {
                this._x -= guaiwu_xmove;
            }
            if (guaiwu_movetime>=150 || guaiwu.guaiwu_hp<5) {
                this._x -= guaiwu_xmove;
                this._y -= guaiwu_ymove/2;
            }
        }
如果需要怪物从右边偏下方飞进,从左下方飞出，并且设定它的代号为6，即N==6那么我的代码是这么写的：                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Flash射击游戏设计+需求分析(14):http://www.youerw.com/jisuanji/lunwen_464.html