Thread: 3D Tic Tac Toe Help

  1. #1
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    Join Date
    Dec 2019
    Posts
    3

    3D Tic Tac Toe Help

    So I'm trying to create a 3D Tic Tac Toe game where two AI play against each other.

    Right now I have 3 separate [3][3] board with different names, a variable that generates a random number between 1-3 (which represent the 3 boards), and a variable that generates a random number between 1-9 that represent the 9 spaces on the board.

    My first idea was to create a switch case that takes the board choice variable, so if the number generated is 2, it will go to case 2, which represents board 2. Inside the case is a bunch of if/else statements which takes the board space number variable and checks which one was generated.

    So if Case/Board 1, space 1 was generated, it will first check if that space has an X or O already there. If it does, it will say "This space is already take", else it will place the X or O in that spot.

    Except that when I run the code, it automatically runs the "This space is already take" statement even if there is nothing there.

    Right now I only have Case 1, Space 1 set in the way I described above. I also have the board and space variables set to 1 so that they automatically go to Case/board 1, Space 1, to test if it would even work.

    Can someone please help me with this?

    Code:
    #include <iostream>
    #include <string>
    #include <stdlib.h>
    
    
    using namespace std;
    
    
    //---------------------------------------------------------------BOARD DECLARATIONS------------------------------------------------------------------------------
    char board[3][3] = {{'1','2','3'},{'4','5','6'},{'7','8','9'}};
    char board2[3][3] = {{'1','2','3'},{'4','5','6'},{'7','8','9'}};
    char board3[3][3] = {{'1','2','3'},{'4','5','6'},{'7','8','9'}};
    //----------------------------------------------------------------GLOBAL VARIABLES/FUNCTIONS--------------------------------------------------------------------------------------
    int SpaceChoice = 1;
    int BoardChoice = 1;
    char AIlaura = 'O';
    //----------------------------------------------------------------RANDOM AI SELECTOR----------------------------------------------------------------------------------------
    int LauraAI()
    { 
        printf ("\nLaura-AI chose board %d to play in\n", BoardChoice);
        switch (BoardChoice){
        case 1://----------------------------------------------------BOARD ONE-------------------------
        printf("Laura Chose Space %d\n", SpaceChoice);
        if (SpaceChoice == 1)
        {
            if (board [0][0] = 'O' || 'X')
            {
                cout << "This Spot Is Already Taken" << endl;
            }
            else board [0][0] == 'O';    
        }
        else if (SpaceChoice == 2)
        {
            if(board[0][1] == 'O')
               board[0][1] = 'X';
            else
            {
                cout << "This Spot Is Already Taken" << endl;
                LauraAI();    
            }    
        }
        else if (SpaceChoice == 3)
        {
            if (board[0][2] == 'O')
                board[0][2] = 'X';
            else
            {
                cout << "This Spot Is Already Taken" << endl;
                LauraAI();    
            }    
        }
        else if (SpaceChoice == 4)
        {
            if (board[1][0] == 'O')
                board[1][0] = 'X';
            else
            {
                cout << "This Spot Is Already Taken" << endl;
                LauraAI();    
            }    
        }
        else if (SpaceChoice == 5)
        {
            if (board[1][1] == 'O')
                board[1][1] == 'X';
            else
            {
                cout << "This Spot Is Already Taken" << endl;
                LauraAI();    
            }    
        }
        else if (SpaceChoice == 6)
        {
            if (board[1][2] == 'O')
                board[1][2] == 'X';
            else
            {
                cout << "This Spot Is Already Taken" << endl;
                LauraAI();    
            }    
        }
        else if (SpaceChoice == 7)
        {
            if (board[2][0] == 'O')
                board[2][0] == 'X';
            else
            {
                cout << "This Spot Is Already Taken" << endl;
                LauraAI();    
            }    
        }
        else if (SpaceChoice == 8)
        {
            if (board[2][1] == 'O')
                board[2][1] == 'X';
            else
            {
                cout << "This Spot Is Already Taken" << endl;
                LauraAI();
            }    
        }
        else if (SpaceChoice == 9)
        {
            if (board[2][2] == 'O')
                board[2][2] == 'X';
            else
            {
                cout << "This Spot Is Already Taken" << endl;
                LauraAI();
            }
        }
        break;
        case 2://------------------------------------------------------BOARD TWO
            printf (" Hello!");
        break;
        case 3: //--------------------------------------------------- BOARD THREE
            printf ("goodbye!");
        break;
        }
    }
    
    
    int main ()
    {
        cout << "\n\tWelcome To Tic Tac Toe!\n" << endl;
        printf ("Which Board would you like to play in (1-3): \n");
        LauraAI();
        return 0;
    }
    Attached Files Attached Files

  2. #2
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    Location
    The edge of the known universe
    Posts
    37,607
    First, fix these.
    Code:
    foo.cpp: In function ‘int LauraAI()’:
    foo.cpp:20:66: error: ‘printf’ was not declared in this scope
         printf ("\nLaura-AI chose board %d to play in\n", BoardChoice);
                                                                      ^
    foo.cpp:26:38: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
             if (board [0][0] = 'O' || 'X')
                                          ^
    foo.cpp:30:27: warning: statement has no effect [-Wunused-value]
             else board [0][0] == 'O';    
                               ^
    foo.cpp:65:25: warning: statement has no effect [-Wunused-value]
                 board[1][1] == 'X';
                             ^
    foo.cpp:75:25: warning: statement has no effect [-Wunused-value]
                 board[1][2] == 'X';
                             ^
    foo.cpp:85:25: warning: statement has no effect [-Wunused-value]
                 board[2][0] == 'X';
                             ^
    foo.cpp:95:25: warning: statement has no effect [-Wunused-value]
                 board[2][1] == 'X';
                             ^
    foo.cpp:105:25: warning: statement has no effect [-Wunused-value]
                 board[2][2] == 'X';
                             ^
    foo.cpp:120:1: warning: no return statement in function returning non-void [-Wreturn-type]
     }
     ^
    foo.cpp: In function ‘int main()’:
    foo.cpp:126:62: error: ‘printf’ was not declared in this scope
         printf ("Which Board would you like to play in (1-3): \n");
                                                                  ^
    2. LauraAI();
    Calling yourself recursively just to implement a loop is very bad code.

    3. Choose C or choose C++
    #include <iostream>
    #include <string>
    #include <stdlib.h>

    The random mix of printf and cout isn't doing you any favours.

    4. Your global variables aren't doing you any favours either.

    5. Why?
    Code:
    char board[3][3] = {{'1','2','3'},{'4','5','6'},{'7','8','9'}};
    char board2[3][3] = {{'1','2','3'},{'4','5','6'},{'7','8','9'}};
    char board3[3][3] = {{'1','2','3'},{'4','5','6'},{'7','8','9'}};
    I mean, come on, it's 3D TTT
    Code:
    char board[3][3][3] = {
       {{'1','2','3'},{'4','5','6'},{'7','8','9'}},
       {{'1','2','3'},{'4','5','6'},{'7','8','9'}},
       {{'1','2','3'},{'4','5','6'},{'7','8','9'}},
    };
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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