?
Solved

converting script to as3

Posted on 2008-10-27
4
Medium Priority
?
243 Views
Last Modified: 2013-11-11
Hi,

I am trying to convert Kirupa's snow script (http://www.kirupa.com/developer/flash8/snow.htm) from AS2 to AS3.

I am getting no errors but also no snow. The fla is attached (with .jpg extension), I am sure it is a basic mistake, I just cannot find it.
snowAS3.fla.jpg
0
Comment
Question by:Hulfy
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 39

Expert Comment

by:blue-genie
ID: 22812605
ok a couple of things that need to change. (i used the version directly from kirupa not  yours)

1. i changed the variables width and height to w and h respectively - lets not use reserved words as variable names.
2. i just changed the function syntax to what I like
instead of init = function i use function init();
3. attachMovie doesn't exist anymore you need to add the object to your displayList
so
t = new snow(); instead of attachMovie.
4. you need to change all the variables with underscores to no more underscores i.e. _x is now x; _alpha is now alpha.
5. you need to use an event listener for enterframe now, its no longer working in AS3.
t.addEventListener(Event.ENTER_FRAME, mover);
6, in the mover function target the snow object NOT THE main timeline.
and that's it - we got snow.

have a go and if you're stuck i'll upload the file.
0
 

Author Comment

by:Hulfy
ID: 22819930
Thanks for your help.


I thought I did everything you said. I am getting no errors but no snow.  Can you upload the fla ?


Thanks.

 
     function init () {
 
    w= 300;
    // pixels
    h = 200;
    // pixels
    max_snowsize = 10;
    // pixels
    snowflakes = 50;
    // quantity
    for (i=0; i<snowflakes; i++) {
	
    t = new snow();
    t.alpha = 20+Math.random()*60;
    t.x = -(w/2)+Math.random()*(1.5*width);
    t.y = -(h/2)+Math.random()*(1.5*height);
    t.scaleX = t.scaleY=50+Math.random()*(max_snowsize*10);
    t.k = 1+Math.random()*2;
    t.wind = -1.5+Math.random()*(1.4*3);
    t.addEventListener(Event.ENTER_FRAME, mover);
 
    }
 
    };
    mover = function() {
  
  
    t.y += t.k;
    t.x += t.wind;
    if (t.y>h+10) {
 
    t.y = -20;
 
    }
    if (t.x>w+20) {
 
    t.x = -(w/2)+Math.random()*(1.5*w);
    t.y = -20;
 
    } else if (t.x<-20) {
 
    t.x = -(w/2)+Math.random()*(1.5*w);
    t.y = -20;
 
    }
 
    }
    init();

Open in new window

0
 
LVL 39

Accepted Solution

by:
blue-genie earned 2000 total points
ID: 22829318
sorry i took so long adsl line was down.
here you go.
just remove the .txt extension.
the thing is you're referencing t in the mover function, but t doesn't have scope there as its created inside another function.
so you use the event listener target.
snow3-AS3.fla.txt
0
 

Author Comment

by:Hulfy
ID: 22849449
thanks blue-genie
0

Featured Post

New benefit for Premium Members - Upgrade now!

Ready to get started with anonymous questions today? It's easy! Learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Here are some practices and techniques that can be adopted into your Flash/Flex application development process. Note: Not all "performance tips" provide an immediately-recognizable benefit.   This article does not include timing validation data,…
The last time I worked with Flash and Socket connections was in AS1. A recent project required flash connecting to a Socket, and sending receiving information - we figured it would be easy enough - we all know about the socket policy documents and c…
The goal of the tutorial is to teach the user how to select the video input device. Make sure you have an input device that in connected and work and recognized by Adobe Flash Media Live Encoder and select it in the “video input” menu.
This Micro Tutorial will teach to how to utilize bit rate in Adobe Flash Media Live Encoder.
Suggested Courses

764 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question