/**
 * @file countDown.hpp
 * @author Gustice
 * @brief Classes for typical index manipulation
 *
 * @copyright Copyright (c) 2020
 */
#pragma once

class CountDown {
  public:
    CountDown(unsigned max) : Max(max) {}

    void Tick() {
        _cnt++;
        if (_cnt >= Max) {
            _cnt = 0;
            _pFlag = true;
        }
    }

    bool GetVolatileFlag() {
        if (!_pFlag)
            return false;

        // Reset _pFlag in any case, so it only be consumed once
        //  hence volatile
        _pFlag = false; 
        return true;
    }

  private:
    const unsigned Max;
    unsigned _cnt;
    bool _pFlag;
};