public PlutoRover(RoverCoordinates roverCoordinates, Direction direction, int[,] grid,
List <RoverCoordinates> obstacles = null)
{
_roverCoordinates = roverCoordinates;
_plutoSurface = new PlutoSurface(grid);
_direction = direction;
_obstacles = obstacles ?? new List <RoverCoordinates>();
}
public void ShouldGetRoverStartPosition()
{
var coordinates = new RoverCoordinates(0, 0);
var grid = new int[3, 3];
var plutoRover = new PlutoRover(coordinates, Direction.N, grid);
var roverPosition = plutoRover.Execute(string.Empty);
roverPosition.Should().Be("0,0,N");
}
public void RoverSpinLeft(int x, int y, Direction direction, string command, string expectedResult)
{
//Given
var coordinates = new RoverCoordinates(x, y);
var grid = new int[3, 3];
var plutoRover = new PlutoRover(coordinates, direction, grid);
//When
var roverPosition = plutoRover.Execute(command);
//Then
roverPosition.Should().Be(expectedResult);
}
public void DoNotMoveRoverBackwardWhenObstacleExists(int x, int y, Direction direction, string command, string expectedResult)
{
//Given
var coordinates = new RoverCoordinates(x, y);
var grid = new int[3, 3];
var obstacles = new List <RoverCoordinates>
{
new RoverCoordinates(0, 1)
};
var plutoRover = new PlutoRover(coordinates, direction, grid, obstacles);
//When
var roverPosition = plutoRover.Execute(command);
//Then
roverPosition.Should().Be(expectedResult);
}
public string Execute(string command)
{
var newRoverCoordinates = new RoverCoordinates(_roverCoordinates.X, _roverCoordinates.Y);
var obstacleNotification = string.Empty;
foreach (var cmd in command.ToUpper().ToCharArray())
{
switch (cmd)
{
case 'F':
newRoverCoordinates = _plutoSurface.MoveForward(_roverCoordinates, _direction);
break;
case 'B':
newRoverCoordinates = _plutoSurface.MoveBackward(_roverCoordinates, _direction);
break;
case 'R':
_direction = SpinRight(_direction);
break;
case 'L':
_direction = SpinLeft(_direction);
break;
}
if (!_obstacles.Any(o => o.X == newRoverCoordinates.X && o.Y == newRoverCoordinates.Y))
{
_roverCoordinates = newRoverCoordinates;
}
else
{
obstacleNotification = "Obstacle found!,";
}
}
return($"{obstacleNotification}{_roverCoordinates.X},{_roverCoordinates.Y},{_direction}");
}
