actionscript-3 - ActionScript 3.0 : Addition of Document Class causes errors

Question

我正在尝试使用我在Flash CS6中制作的游戏来学习Actionscript 3.0，并且文档类存在一些问题。最初，我有一个工作菜单，其中包含一些用于键盘事件和声音的脚本。我意识到我需要以可以从任何框架访问它们的方式存储一些变量，因此我创建了一个带有空类的Document Class并将游戏设置为引用它，现在菜单脚本正在生成编译器错误。我得到的错误是“1046:未找到类型或不是编译时常量:KeyboardEvent”，这对我来说没有任何意义，因为它可以正常工作。有人知道问题可能是什么吗？谢谢!

文件类别:

package  
{  
    import flash.display.MovieClip;  
    public class Main extends MovieClip  
    {  

    }  
}

菜单脚本:

import flash.utils.getDefinitionByName;
import flash.ui.Keyboard;

stop();//Used to stay on the current frame

var selection:int = 0;//Will be used to determine which button has its "On" animation activated
var canMove:Boolean = true;

var menuSong:Sound = new MenuSong();
menuSong.play (0 , 9999);//Plays and loops(9999 times) menu theme

var menuMove:Sound = new MenuMove();
var menuSelect:Sound = new MenuSelect();

stage.addEventListener(KeyboardEvent.KEY_DOWN, move);//Calls move function when a key is pressed

function move(event:KeyboardEvent):void{//The line causing the error
    if(canMove){
        if(event.keyCode == 40){
            selection = (selection + 1)%3;//Occurs when down key is pressed
            menuMove.play();
        }
        else if(event.keyCode == 38){
            selection = (selection + 2)%3;//Occurs when up key is pressed
            menuMove.play();
        }
        else if(event.keyCode == 32){
            canMove = false;
            SoundMixer.stopAll();
            menuSelect.play();
            fadeOut.gotoAndPlay(1);
        }

        switch(selection){
            case 0:
                this.singlePlayer.gotoAndPlay("On");
                this.multiplayer.gotoAndStop("Off");
                this.credits.gotoAndStop("Off");
                break;
            case 1:
                this.singlePlayer.gotoAndStop("Off");
                this.multiplayer.gotoAndPlay("On");
                this.credits.gotoAndStop("Off");
                break;
            case 2:
                this.singlePlayer.gotoAndStop("Off");
                this.multiplayer.gotoAndStop("Off");
                this.credits.gotoAndPlay("On");
                break;  
        }//All this just tells the selected button (Based on the selection variable)
        //to play its "On" animation, and the other buttons to play their "Off" animation.
    }
}

Answer 1

您需要在代码(菜单脚本)中使用flash.events.KeyboardEvent时将其导入。

为什么不将称为“菜单脚本”的脚本用作文档类？如果SWF的目标是菜单脚本代码中设计的目标，则应为文档类。

通过某种方式，如果您在代码中使用stage.addEventListener(KeyboardEvent.KEY_DOWN, move);，则必须导入flash.utils.KeyboardEvent。 Sound ( import flash.media.Sound)和SoundMixer(import flash.media.SoundMixer)同样。