st-random.h

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#pragma once
 
namespace StyyxUtil {
 
    struct RandomiserUtil
    {
        static int GetRandomInt(const int a_min, const int a_max)
        {
            std::uniform_int_distribution<int> distrib(a_min, a_max);
            return distrib(GetRNG());
        }

        static float GetRandomFloat(const float a_min, const float a_max)
        {
            std::uniform_real_distribution<float> distrib(a_min, a_max);
            return distrib(GetRNG());
        }

        static float GetRandomRoundedFloat(const float a_min, const float a_max, const int decimals = 2)
        {
            const auto value = GetRandomFloat(a_min, a_max);
            const double factor = std::pow(10.0, static_cast<double>(decimals));
            return static_cast<float>(std::round(value * factor) / factor);
        }

        static double GetRandomDouble(const double a_min, const double a_max) {
            std::uniform_real_distribution<double> distrib(a_min, a_max);
            return distrib(GetRNG());
        }

        static bool IsPercentageChanceFloat(const float a_chancePercent) {
            return GetRandomFloat(0.0, 100.0) <= a_chancePercent;
        }
    private:
        static std::mt19937& GetRNG()
        {
            static std::mt19937 gen(std::random_device{}());
            return gen;
        }
 
    };
}