public void RushHour_CreateCarHorizontal()
{
var c = new Car(3, 5, 3, 8);
Assert.IsTrue(c.Equals(new Car(new int[] { 3, 5, 3, 8 })));
Assert.AreEqual(c.Street, 3);
Assert.AreEqual(c.Position, 5);
Assert.AreEqual(c.Length, 4);
Assert.AreEqual(c.Orientation, CarOrientation.Vertical);
}
public void RushHour_CreateCarVertical()
{
var c = new Car(3, 2, 4, 2);
Assert.IsTrue(c.Equals(new Car(new int[] { 3, 2, 4, 2 })));
Assert.AreEqual(c.Position, 3);
Assert.AreEqual(c.Street, 2);
Assert.AreEqual(c.Length, 2);
Assert.AreEqual(c.Orientation, CarOrientation.Horizontal);
}
public static RushHourDefinition FromTutor(IList<string> definition)
{
var result = new RushHourDefinition();
if (definition == null || definition.Count < 1 || definition.Count > MaximalSize)
{
throw new ArgumentException("Invalid input format. Argument is null or the number of lines is invalid.");
}
result.Size = new[] { definition.Count - 2, definition[0].Length - 2 };
Func<int, int, int> min = (i, j) => i > j ? j : i;
Func<int, int, int> max = (i, j) => i > j ? i : j;
Func<int, int, int[], int[]> update = (i, j, act) => new int[] { min(i, act[0]), min(j, act[1]), max(i, act[2]), max(j, act[3]) };
var cars = new int[256][];
for (var i = 0; i < result.Size[0] + 2; i++)
{
for (var j = 0; j < result.Size[1] + 2; j++)
{
var c = definition[i][j];
switch (c)
{
case 'E':
result.Exit = (i == 0) ? ExitPosition.Up :
(i == result.Size[0] + 1) ? ExitPosition.Down :
(j == 0) ? ExitPosition.Left : ExitPosition.Right;
break;
case '-':
case '#':
break;
default:
cars[c] = update(j - 1, i - 1, cars[c] ?? new int[] { j - 1, i - 1, j - 1, i - 1 });
break;
}
}
}
// set RedCar and Cars
Assert.IsNotNull(cars['x'], "No red car in given instance.");
var redCar = new Car(cars['x']);
cars['x'] = null;
result.Cars = cars.Where(car => car != null).Select(data => new Car(data)).ToList();
result.Cars.Insert(0, redCar);
result.InitialState = new RushHourState(result.Cars.Select(c => c.Position).ToList());
return result;
}
