How do i get Object index in an array

Question

I have seen many threads about this but my problem doesn't solved. This may be a simple way but i have no idea...

I'm trying to get Objects indices in an array like so :

var test:Array = new Array();

for (var row:Number = 0; row < 2; row++) {
    test[row] = [];
    for (var column:Number = 0; column < 3; column++) {
        test[row][column].addEventListener(MouseEvent.CLICK, objClicked);
        test[row][column] = new ballShape(column, column, row);
        addChild(test[row][column]);
    }
}

function objClicked(evt:MouseEvent):void {
    // Here must return Object index in array
}

P.S :

I can get items index in int array, but i don't know about objects.

Any ideas would be appreciated.

Edit :

ballShape.as

package  {
    import flash.display.Graphics;
    import flash.display.Sprite;
    import flash.events.MouseEvent;
    import fl.motion.Color;

    public class ballShape extends Sprite {

    private var shapeId:uint;
    private var currentPosition:uint;
    private var arrayPosition:uint;
    private var color:Number;

    public function ballShape(Id:uint, currPos:uint, arrPos:uint) {
        setId(Id);
        setArrayPos(arrPos);
        setCurrentPos(currPos);

        //trace("Array : " + arrPos);
        //trace("Curr : " + currPos);

        if (arrPos == 0) {
            var posX:uint = 60;
        } else {
            var posX:uint = (arrPos + 1) * 60;
        }
        if (currPos == 0) {
            var posY:uint = 42;
        } else {
            var posY:uint = (currPos + 1) * 42;
        }
        if (arrPos == 0) {
            color = 0xFF0000;
        } else {
            color = 0x00FF00;
        }
        graphics.beginFill(color, 1.0);
        graphics.drawCircle(posX, posY, 20);
        graphics.endFill();     
        this.addEventListener(MouseEvent.CLICK, Clicked);
    }
    public function setId(Id:uint):void {
        shapeId = Id; 
    }
    public function getId():uint {
        return shapeId;
    }
    public function Clicked(evt:MouseEvent):void {
        //return getId();
        trace("Ball id is "  + getId());
        trace("Array id is " + getArrayPos());
        trace("PositionInArray id is "  + getCurrentPos());
        //return arrayPosition;     
    }
    public function setCurrentPos(Pos:uint):void {
        currentPosition = Pos;
    }
    public function getCurrentPos():uint {
        return currentPosition;
        trace(currentPosition);
    }
    public function setArrayPos(arrayPos:uint):void {
        arrayPosition = arrayPos;
    }
    public function getArrayPos():uint {
        return arrayPosition;
        trace(arrayPosition);       
    }
    public function addBead(arrayId, currPos):void {

    }
}

}

You want to get the index that the object has in the array? I don't think you can get that in this way. You can get the childindex from the parent but not row and / or column values — putvande
– putvande, Commented Aug 23, 2013 at 15:31
The problem is that you have a multidimensional Array. So you'll at least need to loop through each row and then use indexOf() to return the column within the row. So you won't just have one index, but two. There might be better ways to accomplish this, like putting each row in a Sprite and then getting the child index within the parent. — Amy Blankenship
– Amy Blankenship, Commented Aug 23, 2013 at 15:36

putvande · Accepted Answer · 2013-08-23 16:41:34Z

2

I would suggest adding row and column as public variables in your ballShape class. That way you can get them like this:

function objClicked(evt:MouseEvent):void {
    trace(ballShape(evt.target).getCurrentPos(), ballShape(evt.target).getArrayPos());
}

Maybe turn this two lines around:

test[row][column].addEventListener(MouseEvent.CLICK, objClicked);
test[row][column] = new ballShape(column, column, row);

to be :

test[row][column] = new ballShape(column, column, row);
test[row][column].addEventListener(MouseEvent.CLICK, objClicked);

edited Aug 23, 2013 at 16:41

answered Aug 23, 2013 at 16:05

putvande

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4 Comments

Hamed Kamrava Over a year ago

I've tried your approach but get me this error Access of possibly undefined property row through a reference with static type ballShape. Any ideas?

putvande Over a year ago

I have changed my answer, since you had public functions to get the row and column from your own class.

Hamed Kamrava Over a year ago

Thank you for your reply. The error changed to this TypeError: Error #1010: A term is undefined and has no properties. at ballShape_fla::MainTimeline/frame1() .

putvande Over a year ago

See my answer update. Might be that you need to change does lines around.

Amy Blankenship · Accepted Answer · 2013-08-23 15:49:08Z

0

Try something like:

protected function objClicked(e:MouseEvent):void {
    for (var row: int=0; row < test.length; row++) {
        var column:int = (test[row] as Array).indexOf(e.currentTarget);//use currentTarget so you don't try to match on internal Interactive Objects!
        if (column>-1) { 
           trace(row, column);
           return;//or break, if you need to do something else below this loop
        }
    }
}

answered Aug 23, 2013 at 15:49

Amy Blankenship

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