static void Main(string[] args)
{
// holds all updated positions of each rover after all are completed
string positionResults = "";
// establish results-output filepath and clear it
string resultsPath = "results.txt";
File.WriteAllText(resultsPath, String.Empty);
// holds input file as array of text-lines (handleInput handles invalid args)
string[] input = (MainUtil.handleInput(args)) ? System.IO.File.ReadAllLines(args[0]) : new string[1];
// if true, stdout is more detailed during program execution
bool verbose = MainUtil.handleVerbose(args);
// parsing input file for relevant data
if (verbose)
{
Console.WriteLine("Parsing Input from {0}\n", args[0]);
}
// initialize our grid
string[] gridSize = input[0].Split(' ');
Grid plateau = new Grid(Int32.Parse(gridSize[0]), Int32.Parse(gridSize[1]));
// initalizing all rovers, adding them to grid, and executing their instructions
for (int line = 1; line < input.Length - 1; line += 2)
{
// rover ID
int roverID = plateau.rovers.Count + 1;
// deploying rover
if (verbose)
{
Console.WriteLine("Deploying Rover [{0}]", roverID);
}
// parse lines
string[] roverPosition = input[line].Split(' ');
List <char> roverInstructions = new List <Char>();
roverInstructions.AddRange(input[line + 1].ToUpper());
roverInstructions.Remove(' ');
// extract rover constructor params
int xPos = Int32.Parse(roverPosition[0]);
int yPos = Int32.Parse(roverPosition[1]);
// get current facing direction
Directions direction = Directions.NORTH;
switch (roverPosition[2])
{
case "N":
direction = Directions.NORTH;
break;
case "S":
direction = Directions.SOUTH;
break;
case "E":
direction = Directions.EAST;
break;
case "W":
direction = Directions.WEST;
break;
default:
MainUtil.argError(
String.Format(
"\nInvalid Direction provided: {0}.", Int32.Parse(roverPosition[2])
)
);
break;
}
// init rover
Rover rover = new Rover(roverID, xPos, yPos, direction, roverInstructions);
// add rover to grid
plateau.addRover(rover);
// execute each of the rover's instructions and move accordingly
rover.move();
// write results to output
using (StreamWriter sw = File.AppendText(resultsPath)) {
sw.WriteLine(String.Format("{0} {1} {2}",
rover.xPos,
rover.yPos,
(char)rover.direction));
}
// add result string for stdout later (if verbose flag is true)
positionResults += String.Format("Rover [{0}]'s Completed Position: {1} {2} {3}\n",
rover.id,
rover.xPos,
rover.yPos,
(char)rover.direction);
}
// print some cool info about each rover and their position
if (verbose)
{
Console.WriteLine("\n" + positionResults);
plateau.printGrid();
}
// where you can find results
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("You can find the results in: " + resultsPath);
}