Game Challenge 2: Tic Tac Toe - Board.cpp

// MakingGamesWithBen Game Challenge 2: Tic Tac Toe!
// https://www.youtube.com/watch?v=gm2yPC65X78&list=PLSPw4ASQYyynKPY0I-QFHK0iJTjnvNUys&index=21
// main.cpp - https://pastebin.com/M292p0K6
// Board.h - https://pastebin.com/aHtLP1S9

#include "Board.h"

Board::Board(){
    initBoard();
}

void Board::initBoard(){
    for(int y = 0; y < 3; y++){
        for(int x = 0; x < 3; x++){
            _board[y][x] = ' ';
        }
    }
}

void Board::printBoard(){
    cout << "\n\n\n | 1 | 2 | 3 | \n";
    cout << "-+---+---+---+-\n";
    for(int y = 0; y < 3; y++){
        cout << y+1 << "| ";
        for(int x = 0; x < 3; x++){
            cout << _board[y][x] << " | ";
        }
        cout << "\n-+---+---+---+-\n";
    }
}

int Board::getResult(){
    bool rows[2][3] = {
        {
            _board[0][0] == 'x' && _board[0][1] == 'x' && _board[0][2] == 'x',
            _board[1][0] == 'x' && _board[1][1] == 'x' && _board[1][2] == 'x',
            _board[2][0] == 'x' && _board[2][1] == 'x' && _board[2][2] == 'x'
        },
        {
            _board[0][0] == 'o' && _board[0][1] == 'o' && _board[0][2] == 'o',
            _board[1][0] == 'o' && _board[1][1] == 'o' && _board[1][2] == 'o',
            _board[2][0] == 'o' && _board[2][1] == 'o' && _board[2][2] == 'o'
        }
    };
    bool cols[2][3] = {
        {
            _board[0][0] == 'x' && _board[1][0] == 'x' && _board[2][0] == 'x',
            _board[0][1] == 'x' && _board[1][1] == 'x' && _board[2][1] == 'x',
            _board[0][2] == 'x' && _board[1][2] == 'x' && _board[2][2] == 'x'
        },
        {
            _board[0][0] == 'o' && _board[1][0] == 'o' && _board[2][0] == 'o',
            _board[0][1] == 'o' && _board[1][1] == 'o' && _board[2][1] == 'o',
            _board[0][2] == 'o' && _board[1][2] == 'o' && _board[2][2] == 'o'
        }
    };
    bool diag[2][2] = {
        {
            _board[0][0] == 'x' && _board[1][1] == 'x' && _board[2][2] == 'x',
            _board[2][0] == 'x' && _board[1][1] == 'x' && _board[0][2] == 'x'
        },
        {
            _board[0][0] == 'o' && _board[1][1] == 'o' && _board[2][2] == 'o',
            _board[2][0] == 'o' && _board[1][1] == 'o' && _board[0][2] == 'o'
        }
    };
    bool winner[2] = {
        rows[0][0] || rows[0][1] || rows[0][2] || cols[0][0] || cols[0][1] || cols[0][2] || diag[0][0] || diag[0][1],
        rows[1][0] || rows[1][1] || rows[1][2] || cols[1][0] || cols[1][1] || cols[1][2] || diag[1][0] || diag[1][1]
    };
    bool boardFilled = true;
    for(int y = 0; y < 3; y++){
        for(int x = 0; x < 3; x++){
            if(_board[y][x] == ' '){
                boardFilled = false;
            }
        }
    }

    if(winner[0]){ return 1; }
    else if(winner[1]){ return 2; }
    else if(boardFilled){ return 3; }
    else{ return 0; }
}

void Board::playGame(){
    string player1;
    string player2;
    bool playing = true;
    bool gameOver = false;
    bool validTurn;
    int turn = 1;
    int row;
    int col;
    int winner;
    char playAgain;

    while(playing){
        cout << "Player x: What is your name? ";
        cin >> player1;
        cout << "Player o: What is your name? ";
        cin >> player2;

        while(!gameOver){
            validTurn = true;
            printBoard();

            if(turn == 1){ cout << player1 << "'s turn. (x)\n"; }
            else{ cout << player2 << "'s turn. (o)\n"; }

            while(validTurn){
                cout << "Enter row number (1-3): ";
                cin >> row;
                cout << "Enter column number (1-3): ";
                cin >> col;
                row--;
                col--;
                if(!(row > -1 && row < 3 && col > -1 && col < 3) ||_board[row][col] == 'o' || _board[row][col] == 'x'){
                    cout << "Invalid input, try again.\n";
                }else{ validTurn = false; }
            }

            if(turn == 1){
                _board[row][col] = 'x';
                turn = 2;
            }else{
                _board[row][col] = 'o';
                turn = 1;
            }

            winner = getResult();
            if(winner > 0){ gameOver = true; }
        }

        printBoard();
        if(winner == 1){ cout << player1 << " is the winner!\n"; }
        else if(winner == 2){ cout << player2 << " is the winner!\n"; }
        else{ cout << "It was a draw!\n"; }

        validTurn = true;
        while(validTurn){
            cout << "Would you like to play again? (y/n) ";
            cin >> playAgain;
            if(playAgain == 'y'){
                gameOver = false;
                validTurn = false;
                initBoard();
            }else if(playAgain == 'n'){
                playing = false;
                validTurn = false;
            }
        }
    }
}