random_generator.hpp

//
//  SuperTuxKart - a fun racing game with go-kart
//  Copyright (C) 2008-2015  Joerg Henrichs
//
//  This program is free software; you can redistribute it and/or
//  modify it under the terms of the GNU General Public License
//  as published by the Free Software Foundation; either version 3
//  of the License, or (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
#ifndef HEADER_RANDOM_GENERATOR_HPP
#define HEADER_RANDOM_GENERATOR_HPP
 
#include <random>
#include <vector>
 
class RandomGenerator
{
private:
   static unsigned int m_random_value;
   static constexpr unsigned int default_seed = 3141591;
#ifdef NOT_USED_ATM
   unsigned int m_a = 1103515245;
   unsigned int m_c = 12345;
#endif
//    static std::vector<RandomGenerator*> m_all_random_generators;
 
public:
    RandomGenerator() = default;
    static std::mt19937& getGenerator();
    //std::vector<int> generateAllSeeds();
    int get(int n)  {
       std::uniform_int_distribution<int> dist(0, n - 1);
       return dist(getGenerator());
    }
    static void seed(int s) {m_random_value = s;}
};  // RandomGenerator
 
#endif // HEADER_RANDOM_GENERATOR_HPP