1119:通过静态类型Enemy的引用访问可能未定义的属性怪物。 AS3

时间:2013-11-04 06:18:11

标签: actionscript-3 flash adobe flash-cs6

Main.as

package{
import flash.display.MovieClip;
import flash.events.*;

public class Main extends MovieClip {
    public var _root:MovieClip;

    public var monsterContainer:MovieClip = new MovieClip();


    public var delay = 30;

    public function Main(){
        addEventListener(Event.ADDED, beginClass);
        addEventListener(Event.ENTER_FRAME, enterFrameEvents);
    }

    function beginClass(e):void{
        _root = MovieClip(root);
    }

    function enterFrameEvents(e):void{

        addChild(monsterContainer);
        delay -= 1;
        if(delay <= 0){
            var spawn:Slime = new Slime();
            spawn.x = startPoint.x;
            spawn.y = startPoint.y;
            monsterContainer.addChild(spawn);
            delay = 30;
        }

    }
}

Arrow.as

package{
import flash.display.MovieClip;
import flash.events.*;

public class Arrow extends MovieClip {
    public var _root:MovieClip;

    public var facingID;

    public function Arrow(){
        addEventListener(Event.ADDED, beginClass);
        addEventListener(Event.ENTER_FRAME, enterFrameEvents);
    }

    function beginClass(e):void{
        _root = MovieClip(root);
    }

    function enterFrameEvents(e):void{

        trace(_root.monsterContainer == null);

    }
}

Enemy.as

package{
import flash.display.MovieClip;
import flash.events.*;

public class Enemy extends MovieClip {
    public var _root:MovieClip;

    //Status
    public var monsterSpeed;
    public var facing = "Right";

    //CallingArrow
    public var down:Down = new Down();

    public function Enemy(){
        addEventListener(Event.ADDED, beginClass);
        addEventListener(Event.ENTER_FRAME, enterFrameEvents);
    }

    function beginClass(e):void{
        _root = MovieClip(root);
    }

    function enterFrameEvents(e):void{

        //Facing Movement
        if(_root.pausing == false){
            if(facing == "Right"){
                this.x += monsterSpeed;
            }else if(facing == "Left"){
                this.x -= monsterSpeed;
            }else if(facing == "Down"){
                this.y += monsterSpeed;
            }else if(facing == "Up"){
                this.y -= monsterSpeed;
            }
        }


    }
}

Down.as

package  {
import flash.display.MovieClip;
import flash.events.*;


public class Down extends Arrow {

    public function Down(){

        facingID = "Down";
    }
}

Slime.as

package  {
import flash.display.MovieClip;
import flash.events.*;


public class Slime extends Enemy {

    public function Slime(){

        monsterSpeed = 5;

    }
}

并且时间轴上没有其他代码,只有stop();

我收到1119错误,当我想访问粘液内的movieClip时,我给它实例名称的怪物,请帮帮忙!

下载链接:http://www.mediafire.com/download/hz5tptkgftwdipw/Tower_Defense.rar

它只有15KB并且使用CS6请帮助!

1 个答案:

答案 0 :(得分:1)

开启调试

您共享的代码超出了您可能需要的代码(包括.rar文件)。要找到问题的原因(以及StackOverflow上的问题)需要知道您正在编程的哪一行遇到此错误。如果您使用的是Flash IDE CS6,则可以通过转到发布设置并启用“允许调试”来启用。这将带来你的模棱两可的错误......

null object reference at myDocument/doSomething()

......更清楚......

null object reference at myDocument/doSomething() package\myClass.as:20

...现在表示代码中的哪一行可以查找您的问题。

enter image description here


使用调试控制台

使用调试编译模式打开调试控制台。这将使您立即查看相关代码行,以及调用堆栈和所有可用变量的状态。没有程序员就没有它。

enter image description here


Enemy.monster

这是问题的症结所在:在某个地方,你正在调用Enemy.monster,并且你的Enemy类中没有被称为(方法或其他)的属性。