Actionscript 3 implementation of Random.Next()

Question

Hi All,

I was wondering if there is good implementation of Random.Next in AS-3.

Basically want to generate a series of Random numbers given a seed,and at times minumum and maximum limits..

Similar to C# System.Random class.

Random random = new Random();  
return random.Next(min, max);  

Thanks All.

Answer 1

Here it is :

function randomNext(min:Number, max:Number):Number {
 return Math.random()*(max-min)+min;
}

Answer 2

Grant has a random number class, and a seeded random number class:

Non seeded: http://www.gskinner.com/blog/archives/2008/01/source_code_ran.html

Seeded: http://www.gskinner.com/blog/archives/2008/01/source_code_see.html

Also, you can find a decent implementation here:

http://lab.polygonal.de/2007/04/21/a-good-pseudo-random-number-generator-prng/

Example:

package{
  import flash.display.Sprite;
  import de.polygonal.math.PM_PRNG;

  public class RandomTest extends Sprite{

    public function RandomTest(){
      var random:PM_PRNG = new PM_PRNG();
      random.seed = 1234567890;
      for(var i:uint = 0; i< 10; i++){
        trace(random.nextDouble());
      }
      trace("----------");
      random = new PM_PRNG();
      random.seed = 1234567890;
      for(i = 0; i< 10; i++){
        trace(random.nextDouble());
      }
    }
  }
}