Random.hpp

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#pragma once
 
namespace Cori {
    namespace Utility {
        class RandomUint32 {
        public:
            static uint32_t Gen() {
                if (!Get().m_DistFullRange) {
                    Get().m_DistFullRange.emplace();
                }
                return (*Get().m_DistFullRange)(Get().gen);
            }

            static uint32_t Gen(const uint32_t min, const uint32_t max) {
                std::uniform_int_distribution dist(min, max);
                return dist(Get().gen);
            }
 
        private:
            RandomUint32() : gen(std::random_device{}()) {}
 
            static RandomUint32& Get() {
                static RandomUint32 instance;
                return instance;
            }
 
            std::mt19937 gen;
            std::optional<std::uniform_int_distribution<uint32_t>> m_DistFullRange;
        };
    }
}