2D Array and XML

Unity Engine
1

Hi,

I am using a MultiDim array in JS.

I am reading a list of questions and answer from an xml file. I am trying to read them into an array (based on http://www.unifycommunity.com/wiki/index.php?title=JavascriptMultiDimArrays.

My code is:

import System.Xml; 

// npc data 
var npcName : String; 
var npcType : String; 

// chat data 
var maxData : int; 
var showData : int; 
var q: int;
var answers: int;
var questions = MultiDim.StringArray2D(10,6);
var showMessage = false; 
var player : GameObject; 

function OnTriggerStay (collider : Collider) { 
	
     if (collider.gameObject == player) {showMessage = true;} 
} 

function OnTriggerExit (collider : Collider) { 
     if (collider.gameObject == player) {showMessage = false;} 
} 

function OnGUI()
{		
	GUI.Box (Rect (20,140,140,20), "QUIZ");
		// ensures I don't try to show data I don't have 
   	  
      GUI.Label(Rect(20,170,200,20), npcType+":"+npcName); 
      GUI.Label(Rect(20,300,200,100), questions(q,0)); 
      GUI.Label(Rect(20,330,200,100), questions(q,1)); 
      GUI.Label(Rect(20,360,200,100), questions(q,2)); 
      GUI.Label(Rect(20,390,200,100), questions(q,3)); 
      GUI.Label(Rect(20,420,200,100), questions(q,4)); 
      GUI.Label(Rect(20,450,200,100), questions(q,5)); 	
}

function Start() 
{ 
   // initialise data 
   maxData = 0; 
   showData = 0; 
   npcName = "unset"; 

   //readxml from chat.xml in project folder (Same folder where Assets and Library are in the Editor) 
      var reader:XmlReader = XmlReader.Create("questions.xml"); 
     //while there is data read it 
      while(reader.Read()) 
      { 
      //when you find a npc tag do this 
         if(reader.IsStartElement("npc")) 
         { 
         // get attributes from npc tag 
         npcName=reader.GetAttribute("name"); 
         npcType = reader.GetAttribute("npcType"); 
         maxData = parseInt(reader.GetAttribute("entries"));          
         //allocate string pointer array 
         questions = new MultiDim.StringArray2D(6,maxData);          
         //read speach elements (showdata is used instead of having a new int I reset it later) 
         for(showData = 0;showData<maxData;showData++) 
         { 
            reader.Read(); 
            if(reader.IsStartElement("question")) 
            { 
               //fill strings 
               questions(showData,0) = reader.ReadString(); 
            } 
            for(answers = 1; answers<6; answers++)
            {
            	reader.Read();
            	if(reader.IsStartElement("answer")) 
            	{ 
               		//fill strings 
               		questions(showData,answers) = reader.ReadString(); 
            	} 
            }	
         } 
         //reset showData index 
         showData=0; 
         } 
      }       
      q = Random.Range(showData,maxData);    
}

However, I get error on the following lines from above:

GUI.Label(Rect(20,300,200,100), questions(q,0));
GUI.Label(Rect(20,330,200,100), questions(q,1));
GUI.Label(Rect(20,360,200,100), questions(q,2));
GUI.Label(Rect(20,390,200,100), questions(q,3));
GUI.Label(Rect(20,420,200,100), questions(q,4));
GUI.Label(Rect(20,450,200,100), questions(q,5));

The error says:

It is not possible to invoke an expression of type ‘(String, 2)’.

Any ideas why this is happening? All I need is a 2D array to store the questions and answers after reading them from the xml file.

Thanks,

Ads

2

you need to specify int indices if you want to use multidim arrays, they don’t support string keying.

3

Sorry for my ignorance, but I do not understand what you mean. I thought I could define a 2D array for holding strings and then access any specific item using
ArrayName(1,1) etc… What to you by int indices…

4

sorry, error on my end.
For some undefineable reason I thought you had a string in q :frowning: