Math Random Memory Game CS3

programming flash
1

Hello,

I made a memory game with a tutorial. My knowledge of AS3 is not that good so I have the following question.
There is a function like Math.Random to random generate number and put them on stage. I made a memory game and the cards are on the same place every time I play the “movie”.

I want them to shuffle every time I restart the game. How can I write a good random function in AS3?

Thank you.

The code:


package
{
 import flash.display.MovieClip;
 import flash.events.MouseEvent;
 import Card;
 import Computer;
 import Muis;
 import Radio;
 import Iphone;
 import Beamer;
 import Platenspeler;
 
 public class MemoryGame extends MovieClip
 {
  private var _card:Card;
  private var _computer:Computer;
  private var _muis:Muis;
  private var _radio:Radio;
  private var _iphone:Iphone;
  private var _beamer:Beamer;
  private var _platenspeler:Platenspeler;
  private var _cardX:Number;
  private var _cardY:Number;
  private var _firstCard:*;
  private var _totalMatches:Number;
  private var _currentMatches:Number;
  public function MemoryGame()
  {
   _totalMatches = 6;
   _currentMatches = 0;
   createCards();
  }
  private function createCards():void
  {
   _cardX = 45;
   _cardY = 31;
   
   for(var i:Number = 0; i < 2; i++)
   {
   _card = new Card();
   addChild(_card);
   _computer = new Computer();
   _card.setType(_computer);
   _card.x = _cardX;
   _card.y = _cardY;
   _cardX += _card.width + 50;
   _card.addEventListener(MouseEvent.CLICK, checkCards);
   }
   
   for(var j:Number = 0; j < 2; j++)
   {
   _card = new Card();
   addChild(_card);
   _muis = new Muis();
   _card.setType(_muis);
   _card.x = _cardX;
   _card.y = _cardY;
   _cardX += _card.width + 50;
   _card.addEventListener(MouseEvent.CLICK, checkCards);
   }
   _cardX = 45;
   _cardY += _card.height + 50;
   for(var k:Number = 0; k < 2; k++)
   {
   _card = new Card();
   addChild(_card);
   _radio = new Radio();
   _card.setType(_radio);
   _card.x = _cardX;
   _card.y = _cardY;
   _cardX += _card.width + 50;
   _card.addEventListener(MouseEvent.CLICK, checkCards);
   }
   
   for(var l:Number = 0; l < 2; l++)
   {
   _card = new Card();
   addChild(_card);
   _iphone = new Iphone();
   _card.setType(_iphone);
   _card.x = _cardX;
   _card.y = _cardY;
   _cardX += _card.width + 50;
   _card.addEventListener(MouseEvent.CLICK, checkCards);
   }
   
   _cardX = 45;
   _cardY += _card.height + 50;
   for(var m:Number = 0; m < 2; m++)
   {
    _card = new Card();
    addChild(_card);
    _beamer = new Beamer();
    _card.setType(_beamer);
    _card.x = _cardX;
    _card.y = _cardY;
    _cardX += _card.width + 50;
    _card.addEventListener(MouseEvent.CLICK, checkCards);
   }
   
   for(var n:Number = 0; n < 2; n++)
   {
    _card = new Card();
    addChild(_card);
    _platenspeler = new Platenspeler();
    _card.setType(_platenspeler);
    _card.x = _cardX;
    _card.y = _cardY;
    _cardX += _card.width + 50;
    _card.addEventListener(MouseEvent.CLICK, checkCards);
   }
  }
  
  private function checkCards(event:MouseEvent):void
  {
   event.currentTarget.removeEventListener(MouseEvent.CLICK, checkCards);
   
   if(_firstCard == undefined)
   {
    _firstCard = event.currentTarget;
   }
   else if(String(_firstCard._type) == String(event.currentTarget._type))
   {
    
    _firstCard = undefined;
    _currentMatches ++;
    if(_currentMatches >= _totalMatches)
    {
     
    }
   }
   else
   {
    
    _firstCard.gotoAndPlay("flipBack");
    event.currentTarget.gotoAndPlay("flipBack");
    _firstCard.addEventListener(MouseEvent.CLICK, checkCards);
    event.currentTarget.addEventListener(MouseEvent.CLICK, checkCards);
    _firstCard = undefined;
   }
  }
 }
}