Animatroller.Framework.Controller.CueList.GetNextCuePosition C# (CSharp) Method

        private int? GetNextCuePosition()
        {
            if (this.cues.Count <= 0)
                // Nothing to do
                return null;

            int newPos = this.currentCuePos + direction;

            if (newPos < 0)
            {
                if (this.cues.Count == 1)
                    // Nothing to go to
                    return null;

                if (!this.iterationsLeft.HasValue || this.iterationsLeft.GetValueOrDefault() > 0)
                {
                    // Start new
                    newPos = 1;
                }
                else
                    return null;
            }

            if (newPos >= this.cues.Count)
            {
                if (this.cues.Count == 1)
                    // Nothing to go to
                    return null;

                // Check for bounce/iteration/loop
                if (this.bounce)
                {
                    newPos = this.cues.Count - 2;
                }
                else
                {
                    if (this.iterationsLeft.HasValue)
                    {
                        if (this.iterationsLeft.GetValueOrDefault() <= 1)
                            return null;
                    }

                    newPos = 0;
                }
            }

            return newPos;
        }