for the second question
myObj.addEventListener("enterFrame",fun)
function fun(evt)
{
this.x++
}
Supriya.
----- Original Message -----
From: "Mike Mountain" <[EMAIL PROTECTED]>
To: "Flashcoders mailing list" <flashcoders@chattyfig.figleaf.com>
Sent: Thursday, July 27, 2006 9:07 PM
Subject: [Flashcoders] AS3 scripting, first try - some Q's
OK having a dabble in AS3 for the first time and I ported a simple
particle script over to the timeline:
[as]
import flash.events.Event;
var numBots:int = 50;
var balls:Array=new Array();
//
for(var i=0; i<=numBots; i++){
var bl:Ball=new Ball();
var tmpBall=addChild(bl);
tmpBall.xmin = tmpBall.width/2;
tmpBall.ymin = tmpBall.height/2;
tmpBall.xmax = 550-tmpBall.xmin;
tmpBall.ymax = 400-tmpBall.ymin;
//
tmpBall.x =
Math.floor(Math.random()*(550-tmpBall.width))+tmpBall.xmin;
tmpBall.y =
Math.floor(Math.random()*(400-tmpBall.height))+tmpBall.ymin;
//
tmpBall.xVel = Math.floor(Math.random()*20)-10;
tmpBall.yVel = Math.floor(Math.random()*20)-10;
tmpBall.alpha=Math.random()*1
tmpBall.scaleX=tmpBall.scaleY=Math.random()*1
balls.push(tmpBall);
}
addEventListener(Event.ENTER_FRAME, moveme);
function moveme(event:Event):void{
var l=balls.length;
for(var i=0; i<=l; i++){
var bot:Ball = balls[i];
var nextX = bot.xVel+bot.x;
var nextY = bot.yVel+bot.y;
if (nextX>bot.xmax) {
bot.xVel = bot.xVel*-1;
nextX = bot.xmax-(nextX-bot.xmax);
} else if (nextX<bot.xmin) {
bot.xVel = bot.xVel*-1;
nextX = bot.xmin+(bot.xmin-nextX);
}
if (nextY>bot.ymax) {
bot.yVel = bot.yVel*-1;
nextY = bot.ymax-(nextY-bot.ymax);
} else if (nextY<bot.ymin) {
bot.yVel = bot.yVel*-1;
nextY = bot.ymin+(bot.ymin-nextY);
}
bot.x = nextX;
bot.y = nextY;
}
}
[/as]
Gives me this error:
TypeError: Error #1009: Cannot access a property or method of a null
object reference.
at Timeline0_5bf5ad1effb5f4693f4c3e71f1bcfc7/moveme()
What am I missing here?
And while I'm at it, what's the simple AS3 scripting way (I know the
class way) of doing
myObj.onEnterFrame=function(){
this.x+=1
//Etc.
}
Cheers
Mike
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