as3错误：ReferenceError：错误＃1069：在flash.display.Shape上找不到属性keyCode，并且没有默认值 [英] as3 error: ReferenceError: Error #1069: Property keyCode not found on flash.display.Shape and there is no default value
本文介绍了as3错误：ReferenceError：错误＃1069：在flash.display.Shape上找不到属性keyCode，并且没有默认值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在学习如何在as3中构建一个节奏游戏的教程。这里，我对这个语言很陌生。在运行swf时，输出中出现以下错误：
ReferenceError：错误＃1069：在flash上找不到属性keyCode .display.Shape并没有默认值。
at source_fla :: MainTimeline / makeLvl（）[source_fla.MainTimeline :: frame10：116]
<我已经尝试了一些以前的解决方案张贴到相同的错误，但我一直无法解决这个问题。
这里是源代码：
stop（）;
stage.focus = stage;
// VARIABLES
// sTime是正在播放的当前帧
//一旦达到sTempo，它将被重置
//并且将创建一个音符
var sTime：int = 0;
// sTempo是在
//创建音符前需要多少帧。因为它是12，
//帧频是24，所以需要花费一半的时间
来创建一个音符
var sTempo：Number = 12;
// sNote是创建的级别的当前箭头
// 0不使用箭头
// 1使左箭头
// 2使得向上箭头
// 3向下箭头
// 4向右箭头
var sArrow：int = 0;
// arrowSpeed是箭头在屏幕上移动的速度
var arrowSpeed：Number = 10;
// gameIsOver是游戏是否超过
var gameIsOver：Boolean = false;
//得分变量
var score：int = 0;
//完美，好，好，好
var scoreString：String ='';
var combo：int = 0;
var mcHealth：Number = 0;
//布尔值检查箭头是否触及到接收器
var touchLeft：Boolean = false;
var touchUp：Boolean = false;
var touchDown：Boolean = false;
var touchRight：Boolean = false;
函数beginCode（）：void {
addEventListener（Event.ENTER_FRAME，makeLvl）;
//使水平数组变长
lvlArrayAll [lvlCurrent] .push（0,0,0,0,0）;
$ b $函数makeLvl（e：Event）：void {
//这里的代码将创建级别
if（sTime< sTempo）{
//如果所需时间未达到限制
//则更新时间
sTime ++;
} else {
//如果时间达到限制
//然后重置时间
sTime = 0;
//如果一个实际的箭头可以被创建
if（lvlArrayAll [lvlCurrent] [sArrow]！= 0）{
var currentArrow：MovieClip; //如果（lvlArrayAll [lvlCurrent] [sArrow] == 1）{
//将一个左音符放到舞台上
currentArrow = new arrowLeft（）;
//设置音符的_x值，使其位于
//正确的位置来触碰音色
currentArrow.x = 105;
//将音符的y坐标设置为离开舞台
//以便用户看不到它
currentArrow.y = 0;
//设置需要按的键
currentArrow.keyCode = 68;
addChild（currentArrow）; //将它添加到舞台
} else if（lvlArrayAll [lvlCurrent] [sArrow] == 2）{
//在舞台$ b上放置音符$ b currentArrow = new arrowUp（）;
currentArrow.x = 230;
currentArrow.y = 0;
currentArrow.keyCode = 70;
addChild（currentArrow）;
} else if（lvlArrayAll [lvlCurrent] [sArrow] == 3）{
//在舞台上放置一个音符
currentArrow = new arrowDown（）;
currentArrow.x = 355;
currentArrow.y = 0;
currentArrow.keyCode = 74;
addChild（currentArrow）;
} else if（lvlArrayAll [lvlCurrent] [sArrow] == 4）{
//在舞台上放置一个正确的音符
currentArrow = new arrowRight（）;
currentArrow.x = 480;
currentArrow.y = 0;
currentArrow.keyCode = 75;
addChild（currentArrow）;
//如果歌曲未完成，则获取下一个箭头
if（sArrow< lvlArrayAll [lvlCurrent] .length）{
sArrow ++;
} else {
//如果歌曲结束，则重置游戏
gotoAndStop（'win'）;
gameIsOver = true;
//然后删除这个enter_frame监听器
removeEventListener（Event.ENTER_FRAME，makeLvl）;
//检查mcReceptor是否触摸任何箭头
//首先我们重置上次获得的变量，以防万一它们不是真的不再
touchLeft = false;
touchUp = false;
touchDown = false;
touchRight = false;
// this for循环将用于命中测试
for（var i：int = 0; i< numChildren; i ++）{
var target：Object = getChildAt（i）;
if（target.keyCode！= null&& target.hitTestObject（mcReceptor））{//如果对象是一个箭头并且接受器正在触摸它
if（target.keyCode == 68 ）{//如果向左箭头
touchLeft = true;
} else if（target.keyCode == 70）{// if arrow arrow
touchUp = true;
} else if（target.keyCode == 74）{// if down arrow
touchDown = true;
} else if（target.keyCode == 75）{// if right arrow
touchRight = true;
}
}
}
//改变分数文字
mcTxt.txtScore.text ='Score：'+ score;
mcTxt.txtCombo.text ='Combo：'+ combo;
mcTxt.txtScoreString.text = scoreString;
}
//这个函数会根据健康状况的变化改变健康状况
//它需要，正面或负面
function changeHealth（healthDiff：Number） ：void {
healthDiff = 100; //只更改百分比
//检查运行状况是否已满
//或在此命中后将满
if （mcHealth + healthDiff> = 100）{
mcHealth = 100;
} else if（mcHealth + healthDiff <= 0）{
//检查健康是否等于或低于0
gotoAndStop（'lose'）;
gameIsOver = true;
removeEventListener（Event.ENTER_FRAME，makeLvl）;
} else {
//如果没有问题
mcHealth + = healthDiff;
stage.addEventListener（KeyboardEvent.KEY_DOWN，checkKeys）;
函数checkKeys（event：KeyboardEvent）：void {
//如果左键关闭，没有左箭头触及接收器
if（event.keyCode == 68&& ！touchLeft）{
changeHealth（-10）; //使健康状态下降
combo = 0;
scoreString ='Bad';
} else if（event.keyCode == 70&&！touchUp）{//等等
changeHealth（-10）;
combo = 0;
scoreString ='Bad';
} else if（event.keyCode == 74&&！touchDown）{
changeHealth（-10）;
combo = 0;
scoreString ='Bad';
} else if（event.keyCode == 75&&！touchRight）{
changeHealth（-10）;
combo = 0;
scoreString ='Bad';
}
}
beginCode（）;
有人能告诉我为什么会出现这个错误吗？谢谢。
解决方案在迭代
numChildren 时，需要检查对象是是否可以通过 keyCode 属性区分它。 尝试使用 Object.hasOwnProperty（属性名称）方法。
if（target.hasOwnProperty（keyCode））{
//在这里访问target.keyCode。
}
或者这也可以。
if（target是arrowLeft || target是arrowUp || target是arrowDown || target是arrowRight）{
//目标应该是arrow class
//在这里访问target.keyCode。
$ / code>
//这个for循环将被用于命中测试
for（var i：int = 0; i< numChildren; i ++）{
var target：Object = getChildAt（i）;
if（target.hasOwnProperty（keyCode））{//如果对象是箭头，则该对象应该具有keyCode属性。
if（target.keyCode！= null&& target.hitTestObject（mcReceptor））{//如果对象是一个箭头并且接受者正在接触它
if（target。 keyCode == 68）{//如果左箭头
touchLeft = true;
} else if（target.keyCode == 70）{// if arrow arrow
touchUp = true;
} else if（target.keyCode == 74）{// if down arrow
touchDown = true;
} else if（target.keyCode == 75）{// if right arrow
touchRight = true;
}
}
}
}
I am following a tutorial on building a rhythm game in as3 here, and I am very new to the language. On running the swf, I get the following error in the output:
ReferenceError: Error #1069: Property keyCode not found on flash.display.Shape and there is no default value.
at source_fla::MainTimeline/makeLvl()[source_fla.MainTimeline::frame10:116]
I have tried some previous solutions posted to the same error, but I have not been able to resolve the issue.
Here is the source code:
stop();
stage.focus = stage;
//VARIABLES
//sTime is the current frame that is being played
//Once it reaches sTempo, then it will be reset
//and a note will be created
var sTime:int = 0;
//sTempo is how many frames it takes before
//a note is created. Because it's 12, and
//the frame rate is 24, it will take a half of a second
//for a note to be made
var sTempo:Number = 12;
//sNote is the current arrow of the level that is created
//0 makes no arrow
//1 makes a left arrow
//2 makes an up arrow
//3 makes a down arrow
//4 makes a right arrow
var sArrow:int = 0;
//arrowSpeed is how fast the arrow moves up the screen
var arrowSpeed:Number = 10;
//gameIsOver is whether the game's over
var gameIsOver:Boolean = false;
//the score variable
var score:int = 0;
//either perfect, great, nice, or good
var scoreString:String = '';
var combo:int = 0;
var mcHealth:Number = 0;
//Booleans checking if the arrows are touching the receptor
var touchLeft:Boolean = false;
var touchUp:Boolean = false;
var touchDown:Boolean = false;
var touchRight:Boolean = false;
function beginCode():void{
addEventListener(Event.ENTER_FRAME, makeLvl);
//make the level array longer
lvlArrayAll[lvlCurrent].push(0,0,0,0,0);
}
function makeLvl(e:Event):void{
//code here will create the level
if(sTime < sTempo){
//if the required time hasn't reached the limit
//then update the time
sTime ++;
} else {
//if the time has reached the limit
//then reset the time
sTime = 0;
//if an actual arrow can be made
if(lvlArrayAll[lvlCurrent][sArrow] != 0){
var currentArrow:MovieClip; //this will hold the current arrow
if(lvlArrayAll[lvlCurrent][sArrow] == 1){
//place a left note onto the stage
currentArrow = new arrowLeft();
//set the _x value of the note so that it is in the
//right place to touch the receptor
currentArrow.x = 105 ;
//set the note's y coordinate off of the stage
//so that the user can't see it when it appears
currentArrow.y = 0;
//setting the key that needs to be pressed
currentArrow.keyCode = 68;
addChild(currentArrow);//add it to stage
} else if(lvlArrayAll[lvlCurrent][sArrow] == 2){
//place an up note onto the stage
currentArrow = new arrowUp();
currentArrow.x = 230;
currentArrow.y = 0;
currentArrow.keyCode = 70;
addChild(currentArrow);
} else if(lvlArrayAll[lvlCurrent][sArrow] == 3){
//place a down note onto the stage
currentArrow = new arrowDown();
currentArrow.x = 355;
currentArrow.y = 0;
currentArrow.keyCode = 74;
addChild(currentArrow);
} else if(lvlArrayAll[lvlCurrent][sArrow] == 4){
//place a right note onto the stage
currentArrow = new arrowRight();
currentArrow.x = 480;
currentArrow.y = 0;
currentArrow.keyCode = 75;
addChild(currentArrow);
}
}
//get the next arrow if it the song isn't finished
if(sArrow < lvlArrayAll[lvlCurrent].length){
sArrow ++;
} else {
//if the song is finished, then reset the game
gotoAndStop('win');
gameIsOver = true;
//then remove this enter_frame listener
removeEventListener(Event.ENTER_FRAME, makeLvl);
}
}
//checking if mcReceptor is touching any arrows
//first we reset the variables we got last time just in case they aren't true anymore
touchLeft = false;
touchUp = false;
touchDown = false;
touchRight = false;
//this for loop will be used for the hit testing
for(var i:int = 0;i<numChildren;i++){
var target:Object = getChildAt(i);
if(target.keyCode != null && target.hitTestObject(mcReceptor)){//if the object is an arrow and the receptor is touching it
if(target.keyCode == 68){//if left arrow
touchLeft = true;
} else if(target.keyCode == 70){//if up arrow
touchUp = true;
} else if(target.keyCode == 74){//if down arrow
touchDown = true;
} else if(target.keyCode == 75){//if right arrow
touchRight = true;
}
}
}
//changing the score text
mcTxt.txtScore.text = 'Score: '+score;
mcTxt.txtCombo.text = 'Combo: '+combo;
mcTxt.txtScoreString.text = scoreString;
}
//this function will change the health depending on how much health change
//it needs, positive or negative
function changeHealth(healthDiff:Number):void{
healthDiff = 100;//only changes in percentages
//checking if the health is already at it's full
//or will be full after this hit
if(mcHealth + healthDiff >= 100){
mcHealth = 100;
} else if(mcHealth + healthDiff <= 0){
//checking if the health will be equal or below 0
gotoAndStop('lose');
gameIsOver = true;
removeEventListener(Event.ENTER_FRAME, makeLvl);
} else {
//if there are no problems
mcHealth += healthDiff;
}
}
stage.addEventListener(KeyboardEvent.KEY_DOWN, checkKeys);
function checkKeys(event:KeyboardEvent):void{
//if the left key is down and no left arrows are touching the receptor
if(event.keyCode == 68 && !touchLeft){
changeHealth(-10);//make the health go down
combo = 0;
scoreString = 'Bad';
} else if(event.keyCode == 70 && !touchUp){//and so on
changeHealth(-10);
combo = 0;
scoreString = 'Bad';
} else if(event.keyCode == 74 && !touchDown){
changeHealth(-10);
combo = 0;
scoreString = 'Bad';
} else if(event.keyCode == 75 && !touchRight){
changeHealth(-10);
combo = 0;
scoreString = 'Bad';
}
}
beginCode();
Can someone tell me why this error is occurring? Thank you.
解决方案
While iterating numChildren, it's necessary to check the object is an arrow or not.
Maybe you can distinguish it by having keyCode property or not.
Try to use Object.hasOwnProperty(property name) method.
if (target.hasOwnProperty("keyCode")){
// access target.keyCode here.
}
Or this might works too.
if (target is arrowLeft || target is arrowUp || target is arrowDown || target is arrowRight){
// the target should be arrow class
// access target.keyCode here.
}
//this for loop will be used for the hit testing
for(var i:int = 0;i<numChildren;i++){
var target:Object = getChildAt(i);
if (target.hasOwnProperty("keyCode")){ // If the object is an arrow, that object should has keyCode property.
if(target.keyCode != null && target.hitTestObject(mcReceptor)){//if the object is an arrow and the receptor is touching it
if(target.keyCode == 68){//if left arrow
touchLeft = true;
} else if(target.keyCode == 70){//if up arrow
touchUp = true;
} else if(target.keyCode == 74){//if down arrow
touchDown = true;
} else if(target.keyCode == 75){//if right arrow
touchRight = true;
}
}
}
}
这篇关于as3错误：ReferenceError：错误＃1069：在flash.display.Shape上找不到属性keyCode，并且没有默认值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
