update exp to new system

gistfile1.js

// mongo habitrpg ./node_modules/underscore/underscore.js ./migrations/20130307_normalize_algo_values.js

function oldTnl(level) {
    return (Math.pow(level,2)*10)+(level*10)+80
}

function newTnl(level) {
    var value = 0;
    if (level >= 100) {
        value = 0
    } else {
       value = Math.round(((Math.pow(level,2)*0.25)+(10 * level) + 139.75)/10)*10; // round to nearest 10
    }
    return value
}

/**
 * Make sure people aren't overflowing their exp with the new system
 */
db.users.find().forEach(function(user){

    var percent = user.stats.exp / oldTnl(user.stats.lvl);
    user.stats.exp = newTnl(user.stats.lvl) * percent;

    try {
        db.users.update(
            {_id:user._id},
            {$set: {'stats.exp': user.stats.exp}},
            {multi:true}
        );
    } catch(e) {
        print(e);
    }
})