public static ToyRobotInputModel ExecuteCommand(ToyRobotInputModel inputLocation, string[] moveDirection)
{
foreach (string command in moveDirection)
{
switch (command)
{
case "LEFT":
switch (inputLocation.Position.Heading)
{
case "EAST":
inputLocation.Position.Heading = "NORTH";
break;
case "NORTH":
inputLocation.Position.Heading = "WEST";
break;
case "WEST":
inputLocation.Position.Heading = "SOUTH";
break;
case "SOUTH":
inputLocation.Position.Heading = "EAST";
break;
}
break;
case "RIGHT":
switch (inputLocation.Position.Heading)
{
case "EAST":
inputLocation.Position.Heading = "SOUTH";
break;
case "NORTH":
inputLocation.Position.Heading = "EAST";
break;
case "WEST":
inputLocation.Position.Heading = "NORTH";
break;
case "SOUTH":
inputLocation.Position.Heading = "WEST";
break;
}
break;
case "MOVE":
inputLocation = Move(inputLocation);
break;
}
Console.WriteLine("OutPut : " + inputLocation.Position.PositionX + " " + inputLocation.Position.PositionY + " " + inputLocation.Position.Heading);
}
return(inputLocation);
}
public string ValidateInput(string inputCommands)
{
ToyRobotOutputViewModel outputModel = new ToyRobotOutputViewModel();
List <ToyRobotOutputModel> finalCoordinates = new List <ToyRobotOutputModel>();
ToyRobotControlModel controlModel = new ToyRobotControlModel();
string validationError = string.Empty;
string[] commandSeparator = new string[] { "PLACE" };
string[] inputs = inputCommands.Split(commandSeparator, StringSplitOptions.None);
string[] stringSeparators = new string[] { "\r\n" };
foreach (string commands in inputs)
{
ToyRobotInputModel inputModel = new ToyRobotInputModel();
if (!string.IsNullOrEmpty(commands))
{
var command = commands.Split(stringSeparators, StringSplitOptions.None);
if (command.Length > 1)
{
string[] startingCoordinate = command[0].Split(',');
if (startingCoordinate.Length > 2)
{
inputModel.Position.PositionX = Convert.ToInt32(startingCoordinate[0]);
inputModel.Position.PositionY = Convert.ToInt32(startingCoordinate[1]);
inputModel.Position.Heading = startingCoordinate[2];
}
for (int i = 1; i < command.Length; i++)
{
if (!string.IsNullOrEmpty(command[i]))
{
inputModel.InstructionSet.Add(command[i]);
}
}
}
else
{
validationError = "First ";
}
controlModel.RobotInputs.Add(inputModel);
}
}
if (!inputCommands.Contains("PLACE"))
{
validationError = "At least one PLACE command should be present";
}
if (!inputCommands.Contains("REPORT"))
{
validationError += Environment.NewLine + "At least one REPORT command should be present";
}
return(validationError);
}
public ActionResult Index(string robotInputModel)
{
ToyRobotOutputViewModel outputModel = new ToyRobotOutputViewModel();
List <ToyRobotOutputModel> finalCoordinates = new List <ToyRobotOutputModel>();
ToyRobotControlModel controlModel = new ToyRobotControlModel();
string[] commandSeparator = new string[] { "PLACE" };
string[] inputs = robotInputModel.Split(commandSeparator, StringSplitOptions.None);
string[] stringSeparators = new string[] { "\r\n" };
//Validates the inputs
outputModel.ErrorMessage = ValidateInput(robotInputModel);
if (string.IsNullOrEmpty(outputModel.ErrorMessage))
{
foreach (string commands in inputs)
{
ToyRobotInputModel inputModel = new ToyRobotInputModel();
if (!string.IsNullOrEmpty(commands))
{
var command = commands.Split(stringSeparators, StringSplitOptions.None);
if (command.Length > 1)
{
string[] startingCoordinate = command[0].Split(',');
if (startingCoordinate.Length > 2)
{
inputModel.Position.PositionX = Convert.ToInt32(startingCoordinate[0]);
inputModel.Position.PositionY = Convert.ToInt32(startingCoordinate[1]);
inputModel.Position.Heading = startingCoordinate[2];
}
for (int i = 1; i < command.Length; i++)
{
if (!string.IsNullOrEmpty(command[i]))
{
inputModel.InstructionSet.Add(command[i]);
}
}
}
controlModel.RobotInputs.Add(inputModel);
}
}
}
finalCoordinates = robotMovementServices.ExecuteRobotNavigation(controlModel);
outputModel.ToyRobotOutputs = finalCoordinates;
//outputModel.ErrorMessage = robotInputModel;
return(View(outputModel));
}
static void Main(string[] args)
{
ToyRobotInputModel inputLocation = new ToyRobotInputModel();
inputLocation.Position.PositionX = 1;
inputLocation.Position.PositionY = 2;
inputLocation.Position.Heading = "EAST";
//inputLocation.Position.PositionX = 0;
//inputLocation.Position.PositionY = 0;
//inputLocation.Position.Heading = "NORTH";
//string[] instructionSet = { "MOVE", "REPORT" };
string[] instructionSet = { "MOVE", "MOVE", "LEFT", "MOVE", "REPORT" };
var output = ExecuteCommand(inputLocation, instructionSet);
Console.Read();
}
public static ToyRobotInputModel Move(ToyRobotInputModel inputLocation)
{
string direction = inputLocation.Position.Heading;
string move_direction = "";
bool can_move = true;
var currentPositionX = inputLocation.Position.PositionX;
var currentPositionY = inputLocation.Position.PositionY;
if (direction == "EAST" || direction == "WEST")
{
move_direction = "X";
}
else if (direction == "SOUTH" || direction == "NORTH")
{
move_direction = "Y";
}
if (direction == "EAST" || direction == "NORTH")
{
if (direction == "EAST")
{
if ((currentPositionX < 0 || (currentPositionX) > GridTopX))
{
can_move = false;
}
}
if (direction == "NORTH")
{
if (currentPositionY < 0 || (currentPositionY) > GridTopY)
{
can_move = false;
}
}
if (can_move)
{
if (move_direction == "X")
{
inputLocation.Position.PositionX += 1;
}
else
{
inputLocation.Position.PositionY += 1;
}
}
}
else if (direction == "WEST" || direction == "SOUTH")
{
if (move_direction == "X" && currentPositionX > 0)
{
inputLocation.Position.PositionX -= 1;
}
else if (move_direction == "Y" && currentPositionY > 0)
{
inputLocation.Position.PositionY -= 1;
}
}
return(inputLocation);
}
private ToyRobotOutputModel ExecuteCommand(ToyRobotInputModel robotInputModel)
{
ToyRobotOutputModel finalCoordinates = new ToyRobotOutputModel();
foreach (string command in robotInputModel.InstructionSet)
{
switch (command)
{
case "LEFT":
switch (robotInputModel.Position.Heading)
{
case "EAST":
robotInputModel.Position.Heading = "NORTH";
break;
case "NORTH":
robotInputModel.Position.Heading = "WEST";
break;
case "WEST":
robotInputModel.Position.Heading = "SOUTH";
break;
case "SOUTH":
robotInputModel.Position.Heading = "EAST";
break;
}
break;
case "RIGHT":
switch (robotInputModel.Position.Heading)
{
case "EAST":
robotInputModel.Position.Heading = "SOUTH";
break;
case "NORTH":
robotInputModel.Position.Heading = "EAST";
break;
case "WEST":
robotInputModel.Position.Heading = "NORTH";
break;
case "SOUTH":
robotInputModel.Position.Heading = "WEST";
break;
}
break;
case "MOVE":
robotInputModel = Move(robotInputModel);
break;
case "REPORT":
finalCoordinates.PositionX = robotInputModel.Position.PositionX;
finalCoordinates.PositionY = robotInputModel.Position.PositionY;
finalCoordinates.Heading = robotInputModel.Position.Heading;
break;
}
// Console.WriteLine("OutPut : " + robotInputModel.Position.PositionX + " " + robotInputModel.Position.PositionY + " " + robotInputModel.Position.Heading);
}
return(finalCoordinates);
}