public Robot(Wall wall, string startPosition)
{
// Wall must be valid for us to set the robot
if (wall != null && wall.Valid && startPosition != null)
{
var startValues = startPosition.Split(' ');
// Ensure we have 3 values
if (startValues.Count() == 3)
{
int x;
int y;
// Ensure both are positive integers
if (int.TryParse(startValues[0], out x) && int.TryParse(startValues[1], out y))
{
// Check co-ordinates are valid and orientataion is valid
if (x >= 0 && y >= 0
&& wall.WithinWalls(x, y)
&& IsDirectionValid(startValues[2]))
{
X = x;
Y = y;
Orientation = startValues[2];
Wall = wall;
Valid = true;
}
}
}
}
}
public ActionResult Index(Form form)
{
// Output the error messages if input invalid
var wall = new Wall(form.WallSize);
if (!wall.Valid)
{
ModelState.AddModelError("WallSize", "Value must be two numbers separated by space (i.e. '5 8')");
}
var robot = new Robot(wall, form.RobotStart);
if (!robot.Valid)
{
ModelState.AddModelError("RobotStart", "Value must be two numbers within set wall size and either Left, Right, Up or Down, separated by space (i.e. '2 3 Up')");
}
if (ModelState.IsValid)
{
// Everything valid so run instructions
form.Output = robot.Run(form.Instructions);
}
return View(form);
}
private string TestForm(string wallSize, string robotStart, string instructions)
{
var wall = new Wall(wallSize);
var robot = new Robot(wall, robotStart);
var output = robot.Run(instructions);
return output;
}