public Rover(IDirection direction, Coordinate coordinate, Terrain terrain)
{
ValidateRoverInitialization(direction, coordinate, terrain);
Direction = direction;
_coordinate = coordinate;
_terrain = terrain;
}
public Coordinate Move(Coordinate position, Terrain terrain)
{
if (position.Y == terrain.UpperBoundary.Y)
{
throw new RoverInvalidPositionException(Messages.RoverInvalidUpperBoundaryYExceptionMessage);
}
position.Y++;
return position;
}
public Coordinate Move(Coordinate position, Terrain terrain)
{
if (position.X == terrain.LowerBoundary.X)
{
throw new RoverInvalidPositionException(Messages.RoverInvalidLowerBoundaryXExceptionMessage);
}
position.X--;
return position;
}
private void ValidateRoverInitialization(IDirection direction, Coordinate coordinate, Terrain terrain)
{
if (direction == null)
{
throw new RoverNullDirectionException(Messages.RoverArgumentNullExceptionMessage);
}
if (terrain == null)
{
throw new RoverNullTerrainException(Messages.RoverNullTerrainExceptionMessage);
}
if (coordinate.X < terrain.LowerBoundary.X || coordinate.Y < terrain.LowerBoundary.Y)
{
throw new RoverInvalidPositionException(Messages.RoverNegativePositionExceptionMessage);
}
}
public void ExecuteMarsRoverMission(string commands)
{
_commands = commands.Split(_commandLineBreaker);
try
{
var terrain = new Terrain(new Coordinate(_commands[0]));
for (var i = 1; i < _commands.Length; i += 2)
{
var rover = new Rover(GetDirectionFromCommand(_commands[i]), new Coordinate(_commands[i]), terrain);
foreach (var commandString in _commands[i + 1])
{
var command = Repositories.Commands.FirstOrDefault(c => c.ToString() == commandString.ToString());
command.Execute(rover);
}
_marsRoverMissionResult.Append(rover.Position);
if(i + 1 < _commands.Length - 1)
{
_marsRoverMissionResult.Append("\n");
}
}
}
catch(TerrainInvalidInitializationValueException terrainException)
{
ClearMarsRoverMissionResult();
_marsRoverMissionResult.Append(terrainException.Message);
}
catch(RoverInvalidPositionException roverNegativePositionException)
{
ClearMarsRoverMissionResult();
_marsRoverMissionResult.Append(roverNegativePositionException.Message);
}
catch(RoverNullDirectionException roverNullDirectionException)
{
ClearMarsRoverMissionResult();
_marsRoverMissionResult.Append(roverNullDirectionException.Message);
}
}
public MovementSystem(Terrain terrain, Rover rover)
{
this.terrain = terrain;
this.rover = rover;
}
