/**
 * Created by JetBrains PhpStorm.
 * User: sul4bh
 * Date: 12/17/11
 * Time: 11:44 PM
 * To change this template use File | Settings | File Templates.
 */


(function( $ ){
    $.fn.snowFall = function( options ) {

        var settings = {
            'color' : '#eee',
            'interval' : 10,
            'total' : 20
        };

        //override default values if values provided
        if ( options ) {
            $.extend( settings, options );
        }


        /*
         *helper functions starts
         */
        function init(number)
        {
            if (temp.currTotal <= settings.total)
                for (i=0;i<number;i++)
                {
                    var obj = $("<div class='snow'>*</div>");
                    obj.css('color',settings.color);
                    obj.css('position','absolute');
                    var rand = Math.random()*15 + 8;
                    obj.css('font-size',rand);



                    obj.css('top',0);
                    var random = Math.floor(Math.random() * $(window).width()-5);
                    obj.css('left',random);


                    obj.data('direction',Math.floor(Math.random() * 3) - 1);
                    obj.data('speed',Math.floor(Math.random() * 2)+1);
                    obj.data('iter',0);

                    $('body').append(obj);
                    temp.currTotal++;
                }

        }

        var temp = {};
        temp.currTotal = 0;

        //start with 5 flakes
        init(5);

        setInterval(function(){
                $('.snow').each(function(){

                    var speed = $(this).data('speed');
                    var iter = $(this).data('iter');
                    var dirn = $(this).data('direction');

                    $(this).data('iter',iter+1);

                    if (speed == iter)
                    {
                        $(this).data('iter',0);
                        var p = $(this).position();


                        if ((p.top + 40 ) < $(window).height())
                        {
                            $(this).css('top',p.top + 1);
                        }
                        else
                        {
                            $(this).remove();
                            temp.currTotal--;
                            return 0;
                        }


                        if ((p.left + 20) < $(document).width() && p.left > 0)
                            $(this).css('left',p.left + dirn);
                        else
                        {
                            $(this).remove();
                            temp.currTotal--;
                            return 0;
                        }
                    }


                });

            },settings.interval
        );


        setInterval(function(){
            init(1);
        },1000);



    }
})( jQuery );