Challenge -- Bad Weather

[pom]

All right people, time for a new challenge. I was thinking about something weather related: rain, snow, lightning... that kind of things (it's going to be Christmas soon...). What do you think?

[senocular]

leaves blowing in the wind?

[pom]

Whatever, whatever...

[vulcanpimp]

was gonna say be more specific - cos that kinda includes an awful lot. snow is a thing by itself and we've just had elctric(lightning) on kirupa.

But yep - count me in.

[pom]

Wake up!!

[vulcanpimp]

I know I've tried to get a few challenges going recently but can't seem to get anything. I started a 3d challenge , then a paint dripping contest - but don't think I hardly got a response (and when a response came with the 3d challenge it was weeks later)

What about an open challenge - on any subject - that might generate a bit of interest?

having said that I haven't done anything for this.

[pom]

Thunder version beta

function makeLightning () {
    
}
/*** Constants ***/
max_sub_branch = 4 ;
max_sub_angle = 3*Math.PI/5 ;
max_size = 6 ;
length = 10 ;

/*** Function ***/
function makeBranch ( targ, start_x, start_y, angle, size ) {
    if (size > 0 ) {
        c++ ;
        var cl = targ.createEmptyMovieClip ("light" + c, c) ;
        cl.lineStyle ( size, 0xffffff, 100 ) ;
        cl.moveTo ( start_x, start_y ) ;
        while (start_y < 400) {
            var end_x = start_x + length * Math.cos ( angle ) + random(10) - 5 ;
            var end_y = start_y + length * Math.sin ( angle ) //+ random(10) - 5 ;
            cl.lineTo ( end_x, end_y ) ;
            start_x = end_x ;
            start_y = end_y ;
            
            if ( Math.random() > .9 && cl.sub < max_sub_branch ) {
                cl.sub ++ ;
                var newLength = length -1 ;
                var newAngle = Math.PI/4 + Math.random() * Math.PI/2 ;
                var newSize = size - 1 ;
                makeBranch ( cl, end_x, end_y, newAngle, newSize ) ;
            }
        }
    }
}

/*** Function call ***/
this.onMouseDown = function () {
    c = 0 ;
    this.light1.removeMovieClip ()  ;
    makeBranch ( this, 250, 0, Math.PI/6 + Math.random() * 2/3*Math.PI, max_size ) ;
    this.light1.onEnterFrame = function () {
        if ((this._alpha -= 5) < 5) this.removeMovieClip () ;
    }
}

Dark background, and click.

[Ninfoxwoods]

http://server2.uploadit.org/files/091103-lightning.swf
^Heres Pom's code just with Sound and the lightning is yellow instead of white.

[pom]

Thanks

[fileyboy]

very cool pom