SnippyHolloW-BroodwarBotQ-f01ab56/src/Utils/RandomGenerators.h

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#pragma once
#include "Utils/CSingleton.h"
#include <ctime>
#include <boost/random/linear_congruential.hpp>
#include <boost/random/uniform_real.hpp>
#include <boost/random/uniform_int.hpp>
#include <boost/random/variate_generator.hpp>

typedef boost::minstd_rand base_generator_type; 
// can try also boost::mt19937 or boost::ecuyer1988
typedef boost::variate_generator<base_generator_type&, boost::uniform_real<> >
        uniform_generator;

template <int _left, int _right>
class RandomGenerators : public CSingleton<RandomGenerators<_left, _right> >
{
        friend class CSingleton<RandomGenerators<_left, _right> >;
private:
    base_generator_type generator;
        uniform_generator uni_real_generator;
    RandomGenerators()
                : generator(base_generator_type(static_cast<unsigned int>(std::time(0))))
                , uni_real_generator(uniform_generator(generator, boost::uniform_real<>
                (_left, _right)))
        { }
        ~RandomGenerators() { }
public:
        double uni() { return uni_real_generator(); }
};