[RESOLVED] Can't set array values inside a class

[somlemeg]

This is problably a noob question, sorry.
I have this code inside a public class:

// background
const ww = 480;
const hh = 272;

// data for the target
var targDisp:int = 25;
var targWidth:int = 50;
var targHeight:int = 50;
var targMargin:int = 10;

// Define positions
var targPositions:Array = new Array();

targPositions[0] = [(ww / 2) - (targWidth / 2),targMargin];// upper mid position
targPositions[1] = [(ww / 2) - (targWidth / 2),targHeight - targMargin];// lower mid position
targPositions[2] = [targMargin,(hh / 2) - (targHeight / 2)];// left
targPositions[3] = [targWidth - targMargin,(hh / 2) - (targHeight / 2)];// right

When running the code I get:

Line 51	1120: Access of undefined property targPositions.

And so on. I get no error for declaring the targPositions aray, however get lots of error when setting values to it.

If I place the code in the main timeline it works fine.

[cancerinform]

I don't get any error:

package 
{
    import flash.display.Sprite;
    public class Arraytest extends Sprite
    {
        public function Arraytest()
        {
            // background
            const ww = 480;
            const hh = 272;

            // data for the target
            var targDisp:int = 25;
            var targWidth:int = 50;
            var targHeight:int = 50;
            var targMargin:int = 10;

            // Define positions
            var targPositions:Array = new Array();

            targPositions[0] = [(ww / 2) - (targWidth / 2),targMargin];// upper mid position
            targPositions[1] = [(ww / 2) - (targWidth / 2),targHeight - targMargin];// lower mid position
            targPositions[2] = [targMargin,(hh / 2) - (targHeight / 2)];// left
            targPositions[3] = [targWidth - targMargin,(hh / 2) - (targHeight / 2)];// right

            trace(targPositions[0]);
        }
    }
} 

Arraytest is the Document class here.

[somlemeg]

Ooops, I had placed the code right under the class. Why can I define variables there, but not arrays?

package 
{
    import flash.display.Sprite;
    public class Arraytest extends Sprite
    {
            // background
            const ww = 480;
            const hh = 272;

            // data for the target
            var targDisp:int = 25;
            var targWidth:int = 50;
            var targHeight:int = 50;
            var targMargin:int = 10;

            // Define positions
            var targPositions:Array = new Array();

            targPositions[0] = [(ww / 2) - (targWidth / 2),targMargin];// upper mid position
            targPositions[1] = [(ww / 2) - (targWidth / 2),targHeight - targMargin];// lower mid position
            targPositions[2] = [targMargin,(hh / 2) - (targHeight / 2)];// left
            targPositions[3] = [targWidth - targMargin,(hh / 2) - (targHeight / 2)];// right

            public function Arraytest()
            {
                trace (targPositions[0][0])
            }
    }
} 

[cancerinform]

You need to place the execution within the function frame:

public function Arraytest()
{
targPositions[0] = [(ww / 2) - (targWidth / 2),targMargin];// upper mid position
targPositions[1] = [(ww / 2) - (targWidth / 2),targHeight - targMargin];// lower mid position
targPositions[2] = [targMargin,(hh / 2) - (targHeight / 2)];// left
targPositions[3] = [targWidth - targMargin,(hh / 2) - (targHeight / 2)];// right
trace(targPositions[0][0]);
}

Also you should define your variables as public or private and not let the compiler guess it, for example

private var targMargin:int = 10;

[somlemeg]

Thank you very much!




P.s: the link to your book in the footer signature does not seem to work.

[cancerinform]

Thanks