public void DirectRover(int roverId, RoverOperationType operationType)
{
Rover rover;
if (!Rovers.TryGetValue(roverId, out rover))
{
throw new InvalidOperationException("Rover does not exist");
}
if (operationType == RoverOperationType.RotateLeft || operationType == RoverOperationType.RotateRight)
{
rover.Heading = GetNewHeading(rover.Heading, operationType);
}
else if (operationType == RoverOperationType.Move)
{
var newPosition = Vector.Add(rover.Position, rover.Heading);
if (newPosition.X < 0 || newPosition.X > PlateauLength || newPosition.Z < 0 || newPosition.Z > PlateauWidth)
{
throw new InvalidOperationException("Rover has driven off the plateau");
}
foreach (var roverEntry in Rovers.Values)
{
if (Vector.AreEqual(roverEntry.Position, newPosition))
{
throw new InvalidOperationException("Collision! Curiousity got the best of this Martian rover");
}
}
rover.Position = newPosition;
}
}
public void LandRover(Rover rover)
{
if (Rovers.ContainsKey(rover.Id))
{
throw new InvalidOperationException("Rover already exists.");
}
if (rover.Position.X < 0 || rover.Position.X > PlateauLength || rover.Position.Z < 0 || rover.Position.Z > PlateauWidth)
{
throw new InvalidOperationException("Rover has landed off the plateau.");
}
foreach (var roverEntry in Rovers.Values)
{
if (Vector.AreEqual(roverEntry.Position, rover.Position))
{
throw new InvalidOperationException("Rover has crash-landed on another rover.");
}
}
Rovers.Add(rover.Id, rover);
}
