ManicDigger.Hud.HudInventory.SelectedMaterialSelectorSlot C# (CSharp) Method

        private int? SelectedMaterialSelectorSlot(Point scaledMouse)
        {
            if (scaledMouse.X >= MaterialSelectorStart.X && scaledMouse.Y >= MaterialSelectorStart.Y
                && scaledMouse.X < MaterialSelectorStart.X + 10 * ActiveMaterialCellSize
                && scaledMouse.Y < MaterialSelectorStart.Y + 10 * ActiveMaterialCellSize)
            {
                return (scaledMouse.X - MaterialSelectorStart.X) / ActiveMaterialCellSize;
            }
            return null;
        }