87 lines
1.4 KiB
C++
87 lines
1.4 KiB
C++
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//
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#include "BitEvolver/Random.h"
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//
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#include <random>
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#include <chrono>
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//
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namespace BitEvolver
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{
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//
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Random::Random()
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{
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//
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this->InitializeGenerators();
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}
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//
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int Random::GetInt(int min, int max)
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{
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//
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std::uniform_int_distribution<int> distribution(min, max);
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//
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int the_int = distribution(this->generator_mersenne_twister);
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return the_int;
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}
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//
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double Random::GetDouble(double min, double max)
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{
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//
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std::uniform_real_distribution<double> distribution(min, max);
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//
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double the_double = distribution(this->generator_mersenne_twister);
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return the_double;
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}
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//
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double Random::GetNormal(double mean, double standard_deviation)
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{
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//
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std::normal_distribution<double> distribution(mean, standard_deviation);
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double d = distribution(this->generator_mersenne_twister);
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return d;
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}
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//
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bool Random::RollBool(double chance)
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{
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//
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double d = this->GetDouble(0, 1);
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if ( d <= chance ) {
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return true;
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}
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return false;
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}
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//
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void Random::InitializeGenerators()
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{
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// Mostly taken from
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// http://www.cplusplus.com/reference/random/mersenne_twister_engine/seed/
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typedef std::chrono::high_resolution_clock myclock;
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//
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myclock::time_point beginning = myclock::now();
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myclock::duration d = myclock::now() - beginning;
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unsigned seed = d.count();
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// Seed our internal generator
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this->generator_mersenne_twister.seed(seed);
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}
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};
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