static void Main(string[] args)
{
// Read the count of the commands that will follow.
int commandCount = int.Parse(Console.ReadLine());
// Get the start position of the robot.
Vector2 startPosition = Vector2.PositionFromString(Console.ReadLine());
// Create the robot and the tracker.
Robot robot = new Robot(startPosition);
PositionTracker tracker = new PositionTracker(robot);
// Loop until we have read all commands.
for (int i = 0; i < commandCount; i++)
{
// Read the line and create a movement vector.
var line = Console.ReadLine();
Vector2 movement = Vector2.MoveDirectionFromString(line);
// Move the robot.
robot.Move(movement);
}
// Calculate and display the unique positions visited by the robot.
Console.WriteLine($"=> Cleaned: {tracker.CalculatePositionsVisited()}");
}
public void TestPositionTrackerCreation()
{
Robot robot = new Robot(new Vector2(10, 10));
PositionTracker tracker = new PositionTracker(robot);
Assert.AreEqual(1, tracker.CalculatePositionsVisited());
}
public void TestRetraceSteps()
{
Robot robot = new Robot(new Vector2(-10, -10));
PositionTracker tracker = new PositionTracker(robot);
robot.Move(new Vector2(10, 0));
robot.Move(new Vector2(-11, 0));
Assert.AreEqual(12, tracker.CalculatePositionsVisited());
}
public void TestPositionTrackerCalculationNegativeStart()
{
Robot robot = new Robot(new Vector2(-10, -10));
PositionTracker tracker = new PositionTracker(robot);
robot.Move(new Vector2(2, 0));
robot.Move(new Vector2(0, 2));
robot.Move(new Vector2(-2, 0));
robot.Move(new Vector2(0, -2));
Assert.AreEqual(8, tracker.CalculatePositionsVisited());
}
