Demo: http://nettutsplus.s3.amazonaws.com/31_fireflyEffect/demo%20and%20source/index.htm
function Particle() {
this.path = 'images/';
this.images = ['particle1.png', 'particle2.png', 'particle3.png', 'particle4.png'];
// Randomly Pick a Particle Model
this.image = this.images[randomInt(this.images.length)];
this.file = this.path + this.image;
// Create a Particle DOM
this.element = document.createElement('img');
this.speed().newPoint().display().newPoint().fly();
};
// Generate Random Speed
Particle.prototype.speed = function() {
this.duration = (randomInt(10) + 5) * 1100;
return this;
};
// Generate a Random Position
Particle.prototype.newPoint = function() {
this.pointX = randomInt(window.innerWidth - 100);
this.pointY = randomInt(window.innerHeight - 100);
return this;
};
// Display the Particle
Particle.prototype.display = function() {
$(this.element)
.attr('src', this.file)
.css('position', 'absolute')
.css('top', this.pointY)
.css('left', this.pointX);
$(document.body).append(this.element);
return this;
};
// Animate Particle Movements
Particle.prototype.fly = function() {
var self = this;
$(this.element).animate({
"top": this.pointY,
"left": this.pointX,
}, this.duration, 'linear', function(){
self.speed().newPoint().fly();
});
};
function randomInt(max) {
// Generate a random integer (0 < = randomInt < max)
return Math.floor(Math.random() * max);
}
$(function(){
var total = 50;
var particles = [];
for (i = 0; i
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