AS3 不接受构造函数 [英] AS3 not accepting constructor

问题描述

好的，我已经提出过一千次这些问题，但到目前为止没有人能够帮助我.我再次加注是因为我发现了一些新东西.过去我无法为类对象创建参数，每次这样做时都会出现以下错误

Ok, I have raise these question a thousand times and so far no ones been able to help me. I am raising again because I discovered something new. In the past I haven't been able to create parameters for class objects, every time when I do so I get the following error

1136: Incorrect number of arguments.  Expected 0.

我注意到作为 Movie Clip 或 Sprite 的子类的类能够具有构造函数参数，但是作为子类的子类的类不能.这背后有什么原因吗?

I notice that my classes that are subclasses to Movie Clip or Sprite are able to have constructor parameters, but my classes that are sub class to a subclass aren't. is there any reason behind this?

var cloud = new Cloud(5, 4);

package com.objects{
    import flash.events.Event;
    import flash.utils.*;

    public class Cloud extends gameObject {

        public var maxSpeed = 30;
        public var minSpeed = 5;
        public var cspeed:Number = 0;

        public function Cloud(min:Number = 0, max:Number = 0):void
        {
            var rand = Math.ceil(Math.random() * totalFrames);
            gotoAndStop(rand);
        }

        public function rand(min:Number, max:Number):void
        {
            maxSpeed = max;
            minSpeed = min;
            cspeed = (Math.ceil(Math.random() * maxSpeed)+ minSpeed);
        }

        override public function updateObject():void
        {
            eApi.setChildIndex(this, (eApi.numChildren - 1));
            y += cspeed;

            if(y > 800)
                garbage = true;
        }


    }
}

这里是父类

package com.objects {

    import flash.display.MovieClip;
    import flash.display.Stage;
    import flash.events.*;
    import flash.utils.getTimer;

    public class gameObject extends MovieClip implements IgameObject
    {
        public static var EG:Engine;
        public var wPosX:Number = 0;
        public var wPosY:Number = 0;

        public var vPosX:Number = 0;
        public var vPosY:Number = 0;

        public var px:Number = 0;
        public var py:Number = 0;

        public var right:Number = 0;
        public var bottom:Number = 0;
        public var left:Number = 0;
        public var top:Number = 0;
        public var centerx:Number = 0;
        public var centery:Number = 0;
        static public var eApi:EngineApi;
        public var health:Number = 1;
        public var maxHealth:Number = 1;
        protected var lastTime:Number;
        public var ts:TargetSystem;

        public var col:Number;
        public var row:Number;
        public var map:Number;
        public var dead:Boolean = false;

        public var garbage:Boolean = false;

        public function gameObject():void {

        }//End Constructor

        static public function addEngine(e:EngineApi):void
        {
            eApi = e;
        }

        public function updateObject():void
        {

        }
        public function Attack(dir:Number = -40):void
        {

        }

        public function GarbageCollect():gameObject
        {
            return this;
        }

        public function getTime():int
        {
            var time:int = getTimer();
            return time;
        }
    }
}

推荐答案

您正在通过 Flash IDE 将 符号 附加到自定义类> (MovieClip, Sprite,..)谁拿参数flash不知道怎么实例化这样的类，它怎么猜到你期望的参数?

It you are attaching a symbol via Flash IDE to a custom class (MovieClip, Sprite,..) who is taking parameter flash doesnt know how to instanciate such a class, how can it guess the parameter you are expecting ?

它只能实例化没有参数的类，你必须依靠另一种方式来初始化你的类或提供一个默认参数.

It can only instanciate class with no arguments, you have to rely on another way to init your class later or provide a default parameter.

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