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;
}