/// <summary>
/// Returns instance of the object according to Singleton Design Pattern
/// </summary>
/// <returns>Instance of the object</returns>
public static East GetInstance()
{
if (_instance == null)
{
_instance = new East();
}
return(_instance);
}
/// <summary>
/// Factory method that returns direction according to given directionCode char
/// </summary>
/// <param name="directionCode">directionCode char</param>
/// <returns>Direction object</returns>
public static DirectionClass GetDirection(char directionCode)
{
switch (directionCode)
{
case (char)Directions.North:
return(North.GetInstance());
case (char)Directions.East:
return(East.GetInstance());
case (char)Directions.South:
return(South.GetInstance());
case (char)Directions.West:
return(West.GetInstance());
default:
throw new InvalidDirectionException();
}
}
/// <summary>
/// Returns right direction of current DirectionClass
/// </summary>
/// <returns>DirectionClass object</returns>
public override DirectionClass GetRightDirection()
{
return(East.GetInstance());
}