habitica/migrations/20130307_normalize_algo_values.js

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

/**
 * Users were experiencing a lot of extreme Exp multiplication (https://github.com/lefnire/habitrpg/issues/594).
 * This sets things straight, and in preparation for another algorithm overhaul
 */
db.users.find().forEach(function(user){
    if (user.stats.exp >= 3580) {
        user.stats.exp = 0;
    }

    if (user.stats.lvl > 100) {
        user.stats.lvl = 100;
    }

    _.each(user.tasks, function(task, key){
        // remove corrupt tasks
        if (!task) {
            delete user.tasks[key];
            return;
        }

        // Fix busted values
        if (task.value > 21.27) {
            task.value = 21.27;
        }
        else if (task.value < -47.27) {
            task.value = -47.27;
        }
    });

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