/// <summary>
/// Calculates rover's next position with the moving direction
/// </summary>
/// <param name="currentPosition">Rover's current position</param>
/// <param name="direction">Direction that rover want to go</param>
/// <returns>The rover's new position</returns>
public RoverPosition CalculateNextPosition(RoverPosition currentPosition, MovingDirectionEnum direction)
{
switch (direction)
{
case MovingDirectionEnum.Forward:
switch (currentPosition.Direction)
{
case RoverDirectionEnum.North:
currentPosition.Coordinate.Y = (currentPosition.Coordinate.Y + 1) > Bounds.UpperRight.Y ? Bounds.UpperRight.Y : currentPosition.Coordinate.Y + 1;
break;
case RoverDirectionEnum.South:
currentPosition.Coordinate.Y = (currentPosition.Coordinate.Y - 1) < Bounds.LowerLeft.Y ? Bounds.LowerLeft.Y : currentPosition.Coordinate.Y - 1;
break;
case RoverDirectionEnum.East:
currentPosition.Coordinate.X = (currentPosition.Coordinate.X + 1) > Bounds.UpperRight.X ? Bounds.UpperRight.X : currentPosition.Coordinate.X + 1;
break;
case RoverDirectionEnum.West:
currentPosition.Coordinate.X = (currentPosition.Coordinate.X - 1) < Bounds.LowerLeft.X ? Bounds.LowerLeft.X : currentPosition.Coordinate.X - 1;
break;
}
break;
case MovingDirectionEnum.Left:
switch (currentPosition.Direction)
{
case RoverDirectionEnum.North:
currentPosition.Direction = RoverDirectionEnum.West;
break;
case RoverDirectionEnum.South:
currentPosition.Direction = RoverDirectionEnum.East;
break;
case RoverDirectionEnum.East:
currentPosition.Direction = RoverDirectionEnum.North;
break;
case RoverDirectionEnum.West:
currentPosition.Direction = RoverDirectionEnum.South;
break;
}
break;
case MovingDirectionEnum.Right:
switch (currentPosition.Direction)
{
case RoverDirectionEnum.North:
currentPosition.Direction = RoverDirectionEnum.East;
break;
case RoverDirectionEnum.South:
currentPosition.Direction = RoverDirectionEnum.West;
break;
case RoverDirectionEnum.East:
currentPosition.Direction = RoverDirectionEnum.South;
break;
case RoverDirectionEnum.West:
currentPosition.Direction = RoverDirectionEnum.North;
break;
}
break;
}
return(currentPosition);
}
/// <summary>
/// Initializes a new instance for the Rover
/// </summary>
/// <param name="plateau">Sets the plateau that rover moved on</param>
/// <param name="startPosition">Sets the rover's start position</param>
public Rover(IPlateau plateau, RoverPosition startPosition)
{
this._plateau = plateau;
this.CurrentPosition = startPosition;
}
