31 lines
1019 B
C++
31 lines
1019 B
C++
#include "Random.hpp"
|
|
#include <limits>
|
|
|
|
// Seed parameterless constructor with current milliseconds since epoch.
|
|
CreatureLib::Core::Random::Random() : _rng(std::mt19937(duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count())){}
|
|
|
|
float CreatureLib::Core::Random::GetFloat() {
|
|
return static_cast<float>(_rng()) / (static_cast<float>(std::mt19937::max() - std::mt19937::min()) - 0.5f);
|
|
}
|
|
|
|
double CreatureLib::Core::Random::GetDouble() {
|
|
return static_cast<double>(_rng()) / ((static_cast<double>(std::mt19937::max()) - std::mt19937::min()) - 0.5);
|
|
}
|
|
|
|
int32_t CreatureLib::Core::Random::Get() {
|
|
return static_cast<int32_t >(GetDouble() * static_cast<float>(std::numeric_limits<int32_t >::max()));
|
|
}
|
|
|
|
int32_t CreatureLib::Core::Random::Get(int32_t max) {
|
|
return static_cast<int32_t >(GetDouble() * static_cast<float>(max));
|
|
}
|
|
|
|
int32_t CreatureLib::Core::Random::Get(int32_t min, int32_t max) {
|
|
return static_cast<int32_t >(GetDouble() * static_cast<float>(max - min) + min);
|
|
}
|
|
|
|
|
|
|
|
|
|
|