public void DirectionFinder_GivenMoveRightCommand_WhenCurrentlyFacingNorth_ReturnsE()
{
var expected = 'E';
var actual = DirectionFinder.CalculateDirection('N', 'R');
Assert.AreEqual(expected, actual);
}
private Tuple <int[, ], char, bool, int[, ]> Move(char[] commands, IPosition mapBoundary, IList <IPosition> obstacles)
{
Tuple <int[, ], char, bool, int[, ]> result = null;
foreach (char command in commands)
{
int[,] coordinates = new int[, ] {
{ Position.XCoordinate, Position.YCoordinate }
};
char direction = Position.CardinalDirection;
if (command == 'F' || command == 'B') //move forward or backward
{
result = CalculateXYCoordinates(coordinates[0, 0], coordinates[0, 1], direction, command,
mapBoundary.XCoordinate, mapBoundary.YCoordinate,
obstacles);
}
else if (command == 'L' || command == 'R') //change direction
{
result = new Tuple <int[, ], char, bool, int[, ]>(coordinates, DirectionFinder.CalculateDirection(direction, command), false, null);
}
Position.XCoordinate = result.Item1[0, 0];
Position.YCoordinate = result.Item1[0, 1];
Position.CardinalDirection = result.Item2;
if (result.Item3) //if hit an obstacle progress no further
{
break;
}
}
return(result);
}