How would one create a simple fractal noise?

I'm not gonna ask anyone to write me a script cuz that would be unfair, but I am, however, curious on how to get started

 

just make some noise, then add another noise with the double frequency on top of the first and you have a fractal noise with 2 octaves

but if you need some noise functions here is my noise class http://cloud.invidec.net/public.php?service=files&t=9f91cd7b687ac5e973e2cc42dcbcfff9

use it like..

Code (csharp):

1.  
2. Texture2D texture = new Texture2D(200,200);
3. for (int x = 0; x  < texture.width; x++) {
4.     for (int y = 0; y < texture.height; y++) {
5.         float noise = DaveNoise.ValueNoise2DCosine(x,y,120,0.45f,0.68f,10);
6.         texture.SetPixel(x,y, new Color(noise,noise,noise));
7.     }
8. }
9. texture.Apply();
10.  

Output will look like this

 

thanks man!

 

What about noise that is good for generating peaks and caves...Diamond-square algorithm?

 

depends on what type of game you are trying to make
but you could try 2D and 3D noise in combination to make caves and overhangs.