// Updates the robot's bearing if the new bearing is valid
public void SetBearing(string newBearing)
{
if (!Bearing.IsValidBearing(newBearing))
{
throw new ArgumentOutOfRangeException("newBearing", "Invalid bearing specified");
}
bearing = newBearing;
}
// Updates the robot's position by moving one step in the current direction
public void MoveForward()
{
if (xPos == null || yPos == null || bearing == null)
{
throw new InvalidOperationException("Cannot move without a current position and bearing");
}
int xMove, yMove;
Bearing.GetMovementOffset(bearing, out xMove, out yMove);
if (!ValidPosition(xPos.Value + xMove))
{
throw new InvalidOperationException("Cannot move - out of bounds");
}
if (!ValidPosition(yPos.Value + yMove))
{
throw new InvalidOperationException("Cannot move - out of bounds");
}
xPos += xMove;
yPos += yMove;
}
// Updates the robot's bearing by turning 90 degrees in the specified direction
// Throws: InvalidOperationException if current bearing is bad
public void Turn(bool clockwise)
{
bearing = Bearing.GetNewBearing(bearing, clockwise);
}