flash as3.0简单计数器代码

function mc_press(_mc:MovieClip) {
        _mc.addEventListener(flash.events.MouseEvent.MOUSE_DOWN,d_f);

}
function d_f(e:MouseEvent) {
        var str:String=e.target.name.slice(0,e.target.name.length-3);
        var myclass=getDefinitionByName(str);
        var my_mc=new myclass();
        my_mc.startDrag(true);
        addChild(my_mc);
        my_mc.addEventListener(flash.events.MouseEvent.MOUSE_DOWN,mc_d);
        my_mc.addEventListener(flash.events.MouseEvent.MOUSE_UP,mc_u);
}
function mc_d(e:MouseEvent) {
        e.target.startDrag();
        if (fang_mc.hitTestPoint(e.target.x,e.target.y)) {
                e.target.isHitTest=true;
        } else {
                e.target.isHitTest=false;
        }
}
function mc_u(e:MouseEvent) {
        e.target.stopDrag();
        var class_str:String=getQualifiedClassName (e.target);
        var class_name=getDefinitionByName(class_str);
        if (!e.target.isHitTest) {
                if (fang_mc.hitTestPoint(e.target.x,e.target.y)) {
                        class_name.num++;
                }
        } else {
                if (!fang_mc.hitTestPoint(e.target.x,e.target.y)) {
                        class_name.num--;
                }
        }
        back_txt.text=String(back.num);
        blue_txt.text=String(blue.num);
        red_txt.text=String(red.num);
}
mc_press(back_mc);
mc_press(blue_mc);
mc_press(red_mc);
类：
package {
        import flash.display.MovieClip;
        public class back extends MovieClip {
                public static var num:int=0;
                public var isHitTest:Boolean=false;
                public function back() {
                }
        }
}
package {
        import flash.display.MovieClip;
        public class blue extends MovieClip {
                public static var num:int=0;
                public var isHitTest:Boolean=false;
                public function blue() {
                }
        }
}
package {
        import flash.display.MovieClip;
        public class red extends MovieClip {
                public static var num:int=0;
                public var isHitTest:Boolean=false;
                public function red() {
                }
        }
}

类的功能很简单，主要用于计数和判断！
桌面.rar：桌面.rar

//改进：定义一个父亲给三个类：
package {
 import flash.display.MovieClip;
 public class color extends MovieClip {
  public var isHitTest:Boolean=false;
  public function color() {
  }
 }
}
package {
 import flash.display.MovieClip;
 public class back extends color {
  public static var num:int=0;
  public function back() {
  }
 }
}
package {
 import flash.display.MovieClip;
 public class blue extends color {
  public static var num:int=0;
  public function blue() {
  }
 }
}
package {
 import flash.display.MovieClip;
 public class red extends color {
  public static var num:int=0;
  public function red() {
   super();
  }
 }
}