[Xerte] How to use the judge function correctly

[Dave Burnett]

Thanks Julian.

Yes, this does work;

if (interaction.XMLElement.childNodes[2].clip().correct == undefined) {
interaction.XMLElement.childNodes[2].clip().CreateAttribute['correct'];
interaction.XMLElement.childNodes[2].clip().correct = 0;
}

But I'll use the node syntax you suggested:

node.attributes.myNewAttribute = "value";



Subject: RE: [Xerte] How to use the judge function correctly
Date: Wed, 18 Feb 2009 20:05:09 +0000
From: Julian.Tenney at nottingham.ac.uk
To: xerte at lists.nottingham.ac.uk










If you are building the file at runtime (I think you are) then, yes, my preferred way is to work with the XML. It is then parsed and the file is created. There may be a danger that by setting properties directly, you miss something else the code does when initalising icons. So, yes, for example, you could set the correct property on a response movieclip, but if the engine also does something else at that point (like add the response to the array) then it won't happen.
 
I think, in the case of 'correct' you can set it at runtime, because I seem to remember building it to work in a dynamic way. That may not be the case for every movieclip property that has a corresponding xml attribute.
 
 
J



From: xerte-bounces at lists.nottingham.ac.uk on behalf of Dave Burnett
Sent: Wed 18/02/2009 19:11
To: Xerte list
Subject: RE: [Xerte] How to use the judge function correctly



I must have fat-fingered a key somewhere.

Just rebuilt it and I do get a 2 value for 
interaction.responses.length
with an int with 3 responses attached.

interaction.responses[1] gives me 
_level0.engine.IFC.PG_MC20.Int_MC1.box3

Is that the whole array?
I guess the point is to address the XML nodes as opposed to the underlying constructors?





Subject: RE: [Xerte] How to use the judge function correctly
Date: Wed, 18 Feb 2009 18:09:48 +0000
From: Julian.Tenney at nottingham.ac.uk
To: xerte at lists.nottingham.ac.uk





I thought the same thing...



From: xerte-bounces at lists.nottingham.ac.uk on behalf of Dave Burnett
Sent: Wed 18/02/2009 18:08
To: Xerte list
Subject: RE: [Xerte] How to use the judge function correctly



I could test that, but since I got 0 instead of Undefined for the length query, I assumed the rest of the objects had to exist.




Subject: RE: [Xerte] How to use the judge function correctly
Date: Wed, 18 Feb 2009 18:02:25 +0000
From: Julian.Tenney at nottingham.ac.uk
To: xerte at lists.nottingham.ac.uk





does it exist when you try and get at it?
 
debug(question) ?? undefined??



From: xerte-bounces at lists.nottingham.ac.uk on behalf of Dave Burnett
Sent: Tue 17/02/2009 16:26
To: Xerte list
Subject: RE: [Xerte] How to use the judge function correctly



Hmm.

My interaction (id question) has 4 responses with names, id's, correct set to 1.

If I debug:
question.responses.length

I get 0






Subject: RE: [Xerte] How to use the judge function correctly
Date: Tue, 17 Feb 2009 15:17:15 +0000
From: Patrick.Lockley at nottingham.ac.uk
To: xerte at lists.nottingham.ac.uk


Hello
 
I don't know how this function works, but I can possibly help as thus
 
INTERACTION.prototype.judge = function() {
 //check that each response whose correct is not undefined
 //has the same status as correct
 for (var i = 0; i<this.responses.length; i++) {
  if (this.responses[i].correct != undefined) {
   //trace(this.responses[i].correct +" " +this.responses[i].status);
   if (this.responses[i].correct != this.responses[i].status) {
    //doesn't match - user cannot have matched all correctly
    return false;
   }
  }
 }
 return true;
};
 
That is the flash source code of the function, so it looks like you need to set responses for the interactions for a judge to work.
 
Pat




From: xerte-bounces at lists.nottingham.ac.uk [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Peter Huppertz
Sent: 17 February 2009 15:07
To: xerte at lists.nottingham.ac.uk
Subject: [Xerte] How to use the judge function correctly


Hi List, 

another beginner's question. Imagine the following structure: 
-- page 1 
---- interaction: id=question1 
-------- button 1: correct=0 
-------- button 2: correct=0 
-------- button 3: correct=1 
-- page 2 
---- script: question1.judge() 

The script returns undefined, regardless of what the user clicks. I also tried false and true instead of 0 and 1. What's wrong? 

Peter Huppertz


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