#pragma once

#include <random>

class RNG {
public:
	static RNG & get();

public:
	int rand_int(const int upper);
	int rand_int(const int lower, const int upper);
	double rand_double();
	double rand_double(const double lower, const double upper);
	bool rand_bool();

private:
	RNG();

private:
	std::random_device dev;
	std::mt19937 rng;
};