Library Item to Stage

Question

I have a library item that is called tomato and AS linkage called tomatoPieces. I am trying to get it to add the item to the stage and then randomally move the item around. Here is the code so far but the problem it seems to stop add the addEventListener to the stage. I would appreciate any help or direction. Thanks..

import flash.display.Sprite;

import flash.display.MovieClip;

import flash.events.*;

var newX:Number = 0;

var newY:Number = 0;

var speed:Number;

var speedX:Number;

var speedY:Number;

var totalDistance:Number;

var previousDistance:Number = 0;

var currentDistance:Number = 0;

function main()

{

for (var i:Number = 0; i<9; i++)

{

trace(i);

var pieces:tomatoPiece = new tomatoPiece();

pieces.scaleX = .25;

pieces.scaleY = .25;

addChild(pieces);

//trace(this.addChild(pieces).name);

tomatoPieces();

}

function tomatoPieces()

{

trace("setup listener");

addEventListener(Event.ADDED_TO_STAGE, Setstage);

}

function Setstage(event:Event):void

{

trace("Setup");

this.x = this.GetRandomXPosition();

this.y = this.GetRandomYPosition();

speed = Math.round(.5 + Math.random() * 5);

this.addEventListener(Event.ENTER_FRAME, MoveCircle);

}

function GetRandomXPosition():Number

{

//

//basic formula: Math.floor(Math.random()*(1+High-Low))+Low;

//

return Math.floor(Math.random() * (1+ (stage.stageWidth + this.width) + this.width) - this.width);

}

function GetRandomYPosition():Number

{

//

//basic formula: Math.floor(Math.random()*(1+High-Low))+Low;

//

return Math.floor(Math.random() * (1+ (stage.stageHeight + this.height) + this.height) - this.height);

}

function MoveCircle(e:Event)

{

this.previousDistance = this.currentDistance;

this.currentDistance = this.GetDistance();

if (this.currentDistance < this.previousDistance)

{

this.x += this.speedX;

this.y += this.speedY;

}

else

{

this.SetNewPosition();

}

function GetDistance():Number

{

return Math.sqrt(Math.pow(this.x - this.newX,2) + Math.pow(this.y - this.newY,2));

}

function SetNewPosition()

{

this.newX = this.GetRandomXPosition();

this.newY = this.GetRandomYPosition();

this.totalDistance = this.GetDistance();

var time:Number = this.totalDistance / this.speed;

speedX = (this.newX - this.x)/time;

speedY = (this.newY - this.y)/time;

}

Ned Murphy · Accepted Answer

when I trace it I get [object MainTimeline]

That's what I expected. If you want to move the pieces you need to target the pieces, not the main timeline. Everywhere you use "this" you are targeting the main timeline, not the pieces.

If you were to move all of that placement/movement code inside of each piece then it would make more sense to be using "this" for that code. That would also make more sense for the ADDED_TO_STAGE listener you were implementing earlier. That is one way to solve this. After you create each piece you let each piece manage its own movement by having that code within each.

Another way to manage it would be to store references to the pieces in an array and have the movement function loop thru the array to move each piece one after another.

Ned Murphy · Answer

I doubt anything is going to be triggering your ADDED)TO STAGE listener. Try replacing the line

tomatoePieces(); // get rid of the function altogether

with

setstage();

and change your Setstage function to remove the event (I changed setstage to lowercase - uppercase is normally used to indicate a class name)....

function setstage():void

and after doing those things see what else you want to address as far as moving this around... your movement function seems limited in its scope

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