// Checks the Out Stack to see if it is empty.
// If it is, move all Nodes in the In Stack to the Out Stack.
private void FillOutIfEmpty()
{
if (Out.Peek() == null)
{
while (In.Peek() != null)
{
Out.Push(In.Pop());
}
}
}
public void Start()
{
var lineNumber = 0;
var rovers = new List <IRover>();
while (In.Peek() >= 0)
{
lineNumber++;
var line = In.ReadLine();
// end of it
if (line == null)
{
break;
}
if (plateue.Match(line).Success || mars == null)
{
var segment = line.Split(" ");
var x = Int32.Parse(segment[0]);
var y = Int32.Parse(segment[1]);
mars = new Plateue(new Point(x, y), new Point(0, 0));
continue;
}
if (roverInit.Match(line).Success)
{
// 1 2 N
var segment = line.Split(" ");
var x = Int32.Parse(segment[0]);
var y = Int32.Parse(segment[1]);
var d = segment[2];
if (mars != null)
{
var rover = new Rover(new Point(x, y), Compass.FromChar(d));
rovers.Add(mars.AddRover(rover));
}
continue;
}
if (commands.Match(line).Success)
{
if (rovers.Count == 0)
{
throw new Exception("There is not rover which landed on mars!");
}
mars.Move(rovers[0], line);
Out.WriteLine(rovers[0].GetPosition());
mars.CallStation(rovers[0]);
rovers.Remove(rovers[0]);
}
}
Out.Close();
}
/// Peek a characted from the input stream, or return -1 for EOF
public int Peek()
{
return(In.Peek());
}