public void OnGameStarted(object sender, GameStartedEventArgs e)
{
Console.WriteLine("Welcome to BATTLESHIP!");
Console.WriteLine("Are you ready to begin? Press any key to start.");
Console.ReadKey();
Console.Clear();
e.Board.Print(printer);
while (true)
{
Console.WriteLine("\nEnter position of a shot, eg. B3.");
WritePrompt();
var positionString = Console.ReadLine();
if (!UiPosition.TryParse(positionString, out var uiPosition))
{
HandleInvalidInput(e.Board);
continue;
}
e.Board.Shot(uiPosition.Position);
}
}
public static bool TryParse(string input, out UiPosition uiPosition)
{
input = input.Trim();
if (input.Length != 2 && input.Length != 3)
{
uiPosition = null;
return(false);
}
var letter = char.ToUpper(input[0]);
var stringNumber = input.Substring(1, input.Length - 1);
if ('A' <= letter && letter <= 'J' && uint.TryParse(stringNumber, out var number) && 1 <= number && number <= 10)
{
var letterValue = (uint)(letter - 'A');
var position = new Position(number - 1, letterValue);
uiPosition = new UiPosition(position);
return(true);
}
uiPosition = null;
return(false);
}