public static string ValidatePostion(PlayerInfoModel player, string position)
{
string output = position;
// Validate string
string pattern = @"(^[A-Ea-e][1-5]$)";
Regex reg = new Regex(pattern);
// Validate if spot is free
bool isFreeSpot = false;
bool checkSpot = false;
do
{
if (reg.IsMatch(output) == false)
{
Console.Write(" Invalid position. Please try again: ");
output = Console.ReadLine();
}
else if (reg.IsMatch(output) == true && checkSpot == false)
{
isFreeSpot = GameLogic.ValidateShipSpot(player, output);
checkSpot = true;
}
else if (isFreeSpot == false)
{
Console.Write(" There is already a ship in that position. Please try again: ");
output = Console.ReadLine();
checkSpot = false;
}
else if (reg.IsMatch(output) == true && checkSpot == true)
{
isFreeSpot = true;
}
} while (reg.IsMatch(output) == false || isFreeSpot == false);
return(output);
}
