public static MarsRoverInputModel ExecuteCommand(MarsRoverInputModel inputLocation, string moveDirection, int gridTopX, int gridTopY)
{
var commands = moveDirection.ToCharArray();
foreach (char command in commands)
{
switch (command)
{
case 'L':
switch (inputLocation.Position.Heading)
{
case "E":
inputLocation.Position.Heading = "N";
break;
case "N":
inputLocation.Position.Heading = "W";
break;
case "W":
inputLocation.Position.Heading = "S";
break;
case "S":
inputLocation.Position.Heading = "E";
break;
}
break;
case 'R':
switch (inputLocation.Position.Heading)
{
case "E":
inputLocation.Position.Heading = "S";
break;
case "N":
inputLocation.Position.Heading = "E";
break;
case "W":
inputLocation.Position.Heading = "N";
break;
case "S":
inputLocation.Position.Heading = "W";
break;
}
break;
case 'M':
inputLocation = Move(inputLocation, gridTopX, gridTopY);
break;
}
//Console.WriteLine("OutPut : " + inputLocation.Position.PositionX + " " + inputLocation.Position.PositionY + " " + inputLocation.Position.Heading);
}
return(inputLocation);
}
//static int GridTopX = 5;
//static int GridTopY = 5;
static void Main(string[] args)
{
int GridTopX = 5;
int GridTopY = 5;
Console.WriteLine("Enter the upper right co-ordinates with a space between X and Y co-ordinates eg. 5 5");
string TopXY = Console.ReadLine();
var gridCoordinates = TopXY.Split(' ');
GridTopX = Convert.ToInt32(gridCoordinates[0]);
GridTopY = Convert.ToInt32(gridCoordinates[1]);
MarsRoverInputModel inputLocation = new MarsRoverInputModel();
Console.WriteLine("Enter the rover starting position with a space between X and Y co-ordinates and directon eg. 1 2 N");
string roverStartingPosition = Console.ReadLine();
var strartPosition = roverStartingPosition.Split(' ');
inputLocation.Position.PositionX = Convert.ToInt32(strartPosition[0]);
inputLocation.Position.PositionY = Convert.ToInt32(strartPosition[1]);
inputLocation.Position.Heading = strartPosition[2];
Console.WriteLine("Enter the move direction command");
string moveDirection = Console.ReadLine();
//inputLocation.Position.PositionX = 1;
//inputLocation.Position.PositionY = 2;
//inputLocation.Position.Heading = "N";
//string moveDirection = "LMLMLMLMM";
//inputLocation.Position.PositionX = 3;
//inputLocation.Position.PositionY = 3;
//inputLocation.Position.Heading = "E";
//string moveDirection = "MMRMMRMRRM";
var output = ExecuteCommand(inputLocation, moveDirection, GridTopX, GridTopY);
Console.WriteLine("OutPut : " + inputLocation.Position.PositionX + " " + inputLocation.Position.PositionY + " " + inputLocation.Position.Heading);
Console.Read();
}
public static MarsRoverInputModel Move(MarsRoverInputModel inputLocation, int gridTopX, int gridTopY)
{
string direction = inputLocation.Position.Heading;
string move_direction = "";
bool can_move = true;
var currentPositionX = inputLocation.Position.PositionX;
var currentPositionY = inputLocation.Position.PositionY;
if (direction == "E" || direction == "W")
{
move_direction = "X";
}
else if (direction == "S" || direction == "N")
{
move_direction = "Y";
}
if (direction == "E" || direction == "N")
{
if (direction == "E")
{
if ((currentPositionX < 0 || (currentPositionX) > gridTopX))
{
can_move = false;
}
}
if (direction == "N")
{
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 == "W" || direction == "S")
{
if (move_direction == "X" && currentPositionX > 0)
{
inputLocation.Position.PositionX -= 1;
}
else if (move_direction == "Y" && currentPositionY > 0)
{
inputLocation.Position.PositionY -= 1;
}
}
return(inputLocation);
}
