Pretty strait-forward. I made snow; complete with glowing.

Snow.
Source.

____________________

Script:

In the main frame panel:

var pressing:Boolean = true;
var timer:Number = 0;
var gf:Number = .25;
var fr:Number = .8;
function onEnterFrame():Void {
timer++;
if (timer%15 == 0) {
var dot:MovieClip = attachMovie("dot", "dot"+_root.getNextHighestDepth(), _root.getNextHighestDepth());
dot._x = Math.random()*Stage.width;
}
}
function onMouseDown():Void {
pressing = !pressing;
}

In the "white dot" MovieClip :

import flash.filters.GlowFilter;
var vx:Number = 0;
var vy:Number = 0;
function onEnterFrame():Void {
var glow:GlowFilter = new GlowFilter(0xFFFFFF, 1, Math.sqrt((_x-_root._xmouse)*(_x-_root ._xmouse)+(_y-_root._ymouse)*(_y-_root ._ymouse))/50+2, Math.sqrt((_x-_root._xmouse)*(_x-_root ._xmouse)+(_y-_root._ymouse)*(_y-_root ._ymouse))/50+2, 3, 3, false, _root.pressing);
this.filters = [glow];
vy += _root.gf;
vx *= _root.fr;
vy *= _root.fr;
_x += vx;
_y += vy;
if (_y>Stage.height) {
removeMovieClip(this);
}
}

____________________

Explanation:

var pressing:Boolean = true;
var timer:Number = 0;

Initiatives.

var gf:Number = .25;
var fr:Number = .8;

Physics control. I used a single, _root variable instead of one in every "snowflake" to reduce lag.

function onEnterFrame():Void {
timer++;
if (timer%15 == 0) {
var dot:MovieClip = attachMovie("dot", "dot"+_root.getNextHighestDepth(), _root.getNextHighestDepth());
dot._x = Math.random()*Stage.width;
}
}

Creates a "snowflake" every 15 frames.

function onMouseDown():Void {
pressing = !pressing;
}

Determines if you have clicked.

import flash.filters.GlowFilter;

Sets up glow effect.

var vx:Number = 0;
var vy:Number = 0;

Init.

function onEnterFrame():Void {
var glow:GlowFilter = new GlowFilter(0xFFFFFF, 1, Math.sqrt((_x-_root._xmouse)*(_x-_root ._xmouse)+(_y-_root._ymouse)*(_y-_root ._ymouse))/50+2, Math.sqrt((_x-_root._xmouse)*(_x-_root ._xmouse)+(_y-_root._ymouse)*(_y-_root ._ymouse))/50+2, 3, 3, false, _root.pressing);
this.filters = [glow];

Adds the glow and sets the glow amount based on how far the mouse is from the "flake".

vy += _root.gf;
vx *= _root.fr;
vy *= _root.fr;

Gravity and friction.

_x += vx;
_y += vy;

Moving the MovieClip.

if (_y>Stage.height) {
removeMovieClip(this);
}

Deletes the MovieClip if it is below the screen.

}

Copyright 2008 Ryan Keathley.

Updated: 01/31/08 10:53 PM Log in to comment! | Share this!