back_cantanBuilding/Assets/Scripts/EventBingo/BingoRng.cs

public class TrackedRng
{
    private readonly System.Random _rng;
    private readonly int _seed;
    private int _stepCount;
    public int Seed => _seed;
    public int StepCount => _stepCount;
    public TrackedRngState State => new TrackedRngState() { Seed = _seed, StepCount = _stepCount };

    public TrackedRng(int seed, int stepCount = 0)
    {
        _rng = new System.Random(seed);
        _seed = seed;
        _stepCount = stepCount;
        while (stepCount-- > 0)
            _rng.Next();
    }

    public TrackedRng(TrackedRngState state)
    {
        _rng = new System.Random(state.Seed);
        _seed = state.Seed;
        _stepCount = state.StepCount;
        while (state.StepCount-- > 0)
            _rng.Next();
    }

    public int Next()
    {
        _stepCount++;
        return _rng.Next();
    }

    public int Next(int maxValue)
    {
        _stepCount++;
        return _rng.Next(maxValue);
    }

    public int Next(int minValue, int maxValue)
    {
        _stepCount++;
        return _rng.Next(minValue, maxValue);
    }

    /* private void AdvanceBySteps(int stepCount)
    {
        while (stepCount-- > 0)
            _rng.Next();
    } */
}

public class TrackedRngState
{
    public int StepCount = 0;
    public int Seed;
}