var HG_TOOLS = ( function () {
    HG_TOOLS = {};

    //### Game tools module. ###########

    HG_TOOLS.isItCrit = function(chanceToCrit) {
        var rand_num = HG_TOOLS.rngFromTo(0, 100); //random number from 0 - 100

        if (rand_num <= chanceToCrit)
            return true; // if the number is less than or equal to crit chance , then           its a crit.
        else
            return false;

    };


    HG_TOOLS.rngFromTo = function(min, max) { // returns a random number between min & max
        var result = Math.random() * (max - min) + min;
        return result;
    };

    HG_TOOLS.getClassIdFromName = function(className){ // get class id from name
        var sc_class_ids = {
            'warrior':      1,
            'paladin':      2,
            'hunter':       3,
            'rogue':        4,
            'priest':       5,
            'deathknight':  6,
            'shaman':       7,
            'mage':         8,
            'warlock':      9,
            'monk':        10,
            'druid':       11,
        };

        if(className != 'string'){
           console.log("input must be strong");
           return;
        }

        className = className.toLowerCase();
        return sc_class_ids(className) || console.log("no class id for that name");
    };


    HG_TOOLS.HHMMSStoMS = function(HHMMSS) {  // Converts 'HH:MM:SS' timeformat to millisecs
        var arr = HHMMSS.split(':');
        return arr[0]*60000*60000 + arr[1]*60000 + arr[2]*1000;
    };

    HG_TOOLS.rng100 = function(valuebetween1and100){
        var input = valuebetween1and100;
        var rand = Math.random()*100;

        if(input >= rand){
           return true;
        }
        return false;
    }

    return HG_TOOLS;
}());