public void OccypyArea(ISquareable obstacle)
{
if(this.IsOccupyAvaliable(obstacle))
_occupiedArea += obstacle.GetArea();
else
throw new ArgumentException("Not enough free space for this object");
}
public static bool IsOccupyAvaliable(this ITerritory squareTerritory, ISquareable other)
{
return squareTerritory.GetFreeArea().CompareTo(other.GetArea()) >= 0;
}