Random images in flash

Question

does anyone know how to make a random image viewer in flash from scratch
as in click a button then it will take you to a picture then click it again and it will take you to a different one
so the images dont come up twice, or does anyone know any tutorials with the same sorta thing

Answer 1

This might help - I had to go through this quite carefully before I understood it - the ab
stract variable names make it much more difficult to understand. here is my version with more obvious var names:
//creates original array with numbers you want to randomise
var orgArr:Array = [1,2,3,4,5];
trace("original numbers = "+orgArr);
//The function that shuffles the numbers. the argument passed (in parenthesis) is the array of ascending numbers (orgArr) it is named 'inArr' for use by the function, but it is exactly the same array
function shuffle(inArr:Array) {
//creates numeric variable that is the length of the original array
    var arrLen:Number = inArr.length-1;
//a loop that runs through each element in the array starting at the highest position down to zero
    for (var i:Number = arrLen; i>=0; i--) {
        //generates random integer based on length of array
        var rndNum:Number = Math.floor(Math.random()*(i+1));
        //gets data from array corresponding to loop number (i)
        var arrData = inArr[i];
        //swaps array slot i with data from random position in the same array
        inArr[i] = inArr[rndNum];
        //swaps random array slot with data from array slot i
        inArr[rndNum] = arrData;
shuffle(orgArr);
trace("shuffled numbers = "+orgArr);
The function cycles through the original array and swaps each array element with another element randomly chosen from the same array. If you run this code the output window will show the original numbers and then the array after it has been shuffled. The numbers could be frame numbers of your pics or filenames for externally loaded content.
Thanks for that code Kglad - a neat solution and much simpler that the code I wrote to do the same thing.