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as3 movieclip disappears

Posted on 2009-05-19
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Last Modified: 2013-11-11
Hi There Experts,

I'm trying to do something which I thought would be relatively easy but isn't working. In the timer event of my class linked to the fla i'm working on, in my ontick timer event (which is working for other things) I'm trying to update a MovieClip called score which has a TextBox in it (called scoreText) by .05 every "tick". I'm not getting any erros with the below code but the text is flashing up for a millisecond and then disappearing. Any ideas why?

cheers,
~ Jazz
//the movieclip declaration
public var score:Score;
//the currentScore, used to keep track of the score, declaration
public var currentScore;
 
//the timer event in the same class as the above declarations
public function onTick(event:TimerEvent):void
		{
			currentScore = currentScore + 1;
			score.scoreText.text = String(currentScore);
			//other unrelated code
		}
 
//the Score class.
package 
{
	import flash.display.MovieClip;
	import flash.text.TextField;
	
	public class Score extends MovieClip 
	{
		public function Score()
		{
			
		}
	}
}
 
//the linked Score MovieClip in my library has a dynamic text field in it wth the instance name
//scoreText

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Question by:Jazzua
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6 Comments
 

Author Comment

by:Jazzua
ID: 24429184
oh, and i've also attached the score movieclip to the stage with the following code:
score = new Score()
score.x = 350;
score.y = 50;
addChild(score);

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Expert Comment

by:rascalpants
ID: 24434157

if you see if flash on the screen and then go away, normally this happens to me when I have the movieclip being set to visible false or alpha 0 in the code, cause there is some latency in the code.

other things to check are whether or not another movieclip is on top of it, and could be alpha = 0.

the last thing that normally makes a textfield go blank is not having the font embedded, or the font is actually set to white an accident in the code.


try commenting out this line....   score.scoreText.text = String(currentScore);

if it was something to do with your data, and you comment it out, then the text would not flash, but instead stay there...


try to trace out String( currentScore ); and also just plain currentScore...  it could be that Flash doesn't like converting something to a string...


hope I got you started in the right direction...


rp / ZA

 
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Author Comment

by:Jazzua
ID: 24439147
thanks for your help rascalpants,
i tried your suggestion and commented out: "score.scoreText.text = String(currentScore);".
when I did this I could see the default text I had entered in the TextField in my "score" MovieClip at design time ("00").
I then tried just changing the textfield text assignment to:  "score.scoreText = "Test";" and embdded the correct characters. The text didn't show up. So i traced: "trace(score.scoreText)" and got "Test" returned in the output window. So it appears the text property is being changed correctly!
So currently the text will show if not changed in the code, but any attempt to programmatically change the text makes the text dissapear.
???????????????????????????????
this has me completely stumped. Any other ideas?
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Accepted Solution

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rascalpants earned 500 total points
ID: 24442054
well first of all, you have to set the text by using the "text" property...

try this...

score.scoreText.text = "Test";

other than that... make sure all of your instance names are correct... you might be missing one.
can you trace out score.scoreText   ie  trace(score.scoreText);  and see if it have been assigned an instance name?


rp / ZA
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Author Comment

by:Jazzua
ID: 24450964
It turned out I had been using ScoreText rather than scoreText, though it wasn't being picked up by the compiler because I had a ScoreText class from earlier development that I had forgotten about. I feel like an idiot, but its working now, and your advice helped me track down the problem. Cheers :)
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Expert Comment

by:rascalpants
ID: 24451085
LOL...  sorry, that happens to the best of us...

BUT... I would start naming your movieclips with an underscore and extention... like   scoreText_mc...  that way you never have a Class or a textbox that is named the same...


rp / ZA
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