I am trying to write a program that creates a wild tic tac toe game from an extensible framework. I made a base of the program with some glitches for what I can not get the expected output.

I need to

i$.$ cater the game for another mode$-$human vs human as my current code is only about human vs computer mode.

ii$.$ Games can be played from start to finish, and should be able to be saved and restored from any state of play $($i$.$e$.$ save file$).$ A game should be replayable from any position after being loaded from a save file.

iii. During a game, all moves made by both players should be undoable and redoable $($i$.$e$.$ the full history of moves are tracked$).$ But the history of the moves does not have to be saved into a save file. That is$,$ immediately after loading the saved state from a file, undo and redo operations are not available until new moves have been made.

iv$.$ I tried to include a primitive help system which id accessible within the running game, rather than a separate offline help document to assist users with the available commands. I do not know to actually use it$.$

Please suggest how to apply the above $4$ specific criteria in my following code including some help to erase my bug which is$-$ sometimes the console takes the random number very well, other time it becomes an indefinite loop. Please suggest.

using System;

using System.IO;

using System.Runtime.Serialization.Formatters.Binary;

namespace TwoPlayerBoardGames

$\{$

public class TicTacToe : IBoardGame

$\{$

private int$[]$ board $=$ new int$[9]$;

private Random rand $=$ new Random$()$;

public void Initialize$()$

$\{$

for $($int i $=0$; i $<9$; i$++)$

$\{$

board$[$i$]=0$;

$\}$

$\}$

public void DisplayBoard$()$

$\{$

for $($int i $=0$; i $<9$; i$++)$

$\{$

if $($board$[$i$]==0)$

$\{$

Console.Write$(".")$;

$\}$

else if $($board$[$i$]==1)$

$\{$

Console.Write$("$X$")$;

$\}$

else if $($board$[$i$]==2)$

$\{$

Console.Write$("$O$")$;

$\}$

if $($i $==2||$ i $==5||$ i $==8)$

$\{$

Console.WriteLine$()$;

$\}$

$\}$

$\}$

public void Play$()$

$\{$

int userTurn $=-1$;

int computerTurn $=-1$;

$//$ Human player's turn

while $($userTurn $==-1||$ board$[$userTurn$]!=0)$

$\{$

Console.WriteLine$("$Please enter a number from $0$ to $8")$;

userTurn $=$ int.Parse$($Console$.$ReadLine$())$;

Console.WriteLine$("$You typed: $"+$ userTurn$)$;

$\}$

board$[$userTurn$]=1$;

$//$ Computer player's turn

while $($computerTurn $==-1||$ board$[$computerTurn$]!=0)$

$\{$

computerTurn $=$ rand.Next$(8)$;

Console.WriteLine$("$Computer chooses: $"+$ computerTurn$)$;

$\}$

board$[$computerTurn$]=2$;

$\}$

public bool IsGameOver$()$

$\{$

$//$ Implement game over logic

$//$ Return true if the game is over, false otherwise

$//$ Example: check for a winner or if the board is full

return false;

$\}$

public void SaveGame$($string filename$)$

$\{$

using $($FileStream fileStream $=$ new FileStream$($filename$,$ FileMode.Create$))$

$\{$

BinaryFormatter formatter $=$ new BinaryFormatter$()$;

formatter.Serialize$($fileStream$,$ board$)$;

$\}$

Console.WriteLine$("$Game saved successfully"$)$;

$\}$

public void LoadGame$($string filename$)$

$\{$

try

$\{$

using $($FileStream fileStream $=$ new FileStream$($filename$,$ FileMode.Open$))$

$\{$

BinaryFormatter formatter $=$ new BinaryFormatter$()$;

int$[]$ loadedBoard $=($int$[])$formatter$.$Deserialize$($fileStream$)$;

Array.Copy$($loadedBoard$,$ board, $9)$;

$\}$

Console.WriteLine$("$Game loaded successfully"$)$;

$\}$

catch $($Exception ex$)$

$\{$

Console.WriteLine$($$"Error loading game: $\{$ex$.$Message$\}")$;

$\}$

$\}$

public void DisplayHelp$()$

$\{$

Console.WriteLine$("$Available commands:"$)$;

Console.WriteLine$("$undo: Undo the last move"$)$;

Console.WriteLine$("$save$[$file$\_$name$]$: Save the current game state to a file"$)$;

Console.WriteLine$("$load$[$file$\_$name$]$: Load a saved game state from a file"$)$;

Console.WriteLine$("$help: Display this help message"$)$;

Console.WriteLine$("$exit: Quit the game."$)$;

$\}$

public void DisplayResult$()$

$\{$

$//$ Implement displaying result

$\}$

public void SwitchPlayer$()$

$\{$

$//$ Implement switching player logic if needed