Random color (setRGB)

[andr.in]

I'm trying to make a button that changes aa mc's color to a random one from an array.
The array:

mcarray = new Array();
mcarray = new Array(3);
mcarray = new Array("0x00FFFF", "0x00FF00", "0xFFFF00", "0x0000FF")
and the actions for a btn:

on (release) {
mccolor = new Color(_root.mc);
mccolor.setRGB(Math.random(mcarray));
}

But the mc turns black instead of some another color...
I think it's the "Math.random(mcarray)" there...
or is it something else? :-\

Any help would be appreciated...

[pom]

The thing is, the Math.random () function doesn't take any parameter. It's not a method that you can apply to an array. The way to select an element of an array would be myArray[0] for the first element.

The code for your button should the be
on (release) {
myNum = Math.floor(Math.random()*3) ;
mccolor = new Color(_root.mc);
mccolor.setRGB(mcarray[myNum]);
}Hope it helps.

pom
:asian:

[sbeener]

here's a shortcut for declaring your array:


mcarray = ["0x00FFFF", "0x00FF00", "0xFFFF00", "0x0000FF"];

and to make that button event more dynamic, haw about referencing the array length rather than spec'ing it statically?


on (release) {
mccolor = new Color(_root.mc);
mccolor.setRGB(mcarray[Math.floor(Math.random()*mcarray.length)]);
}


but as always, probably better to write a function or method:


MovieClip.prototype.setRandomColour = function(){
var c = new Color(this);
var a = _root.mcarray;
c.setRGB(a[Math.floor(Math.random()*a.length)]);
}

then the button would read:


on(release){
movieToChange.setRandomColour();
}

[andr.in]

woohoo! It works! You guys are great!
That prototype thingy is pretty neat! :)

And I noticed that I don't have to put
movieToChange.setRandomColor();
if the movie is defined in the function.