NScumm.Core.Audio.SoftSynth.AdlibMidiDriver.Struct10Setup C# (CSharp) Method

        void Struct10Setup(Struct10 s10)
        {
            int b, c, d, e, f, g, h;
            byte t;

            b = s10.Unk3;
            f = s10.Active - 1;

            t = s10.TableA[f];
            e = numStepsTable[volumeLookupTable[t & 0x7F, b]];
            if ((t & 0x80) != 0)
            {
                e = RandomNr(e);
            }
            if (e == 0)
                e++;

            s10.NumSteps = s10.SpeedLoMax = (ushort)e;

            if (f != 2)
            {
                c = s10.MaxValue;
                g = s10.StartValue;
                t = s10.TableB[f];
                d = LookupVolume(c, (t & 0x7F) - 31);
                if ((t & 0x80) != 0)
                {
                    d = RandomNr(d);
                }
                if (d + g > c)
                {
                    h = c - g;
                }
                else
                {
                    h = d;
                    if (d + g < 0)
                        h = -g;
                }
                h -= s10.CurVal;
            }
            else
            {
                h = 0;
            }

            s10.SpeedHi = (short)(h / e);
            if (h < 0)
            {
                h = -h;
                s10.Direction = -1;
            }
            else
            {
                s10.Direction = 1;
            }

            s10.SpeedLo = (ushort)(h % e);
            s10.SpeedLoCounter = 0;
        }