flash8新体验：小试Point类

用鼠标在小球的其它地方点击：

代码：

import flash.geom.Point;

this.onMouseDown = function() {

var p1:Point = new Point(mc._x, mc._y);

var p2:Point = new Point(_xmouse, _ymouse);

var d:Point = p2.subtract(p1);

d.normalize(10);

mc.onEnterFrame = function() {

var v = p1.add(d);

p1.x = mc._x=v.x;

p1.y = mc._y=v.y;

if (d.x>0 && p1.x>=p2.x || d.x<0 && p1.x<=p2.x) {

delete mc.onEnterFrame;

}

};

};