//**************************************
//     
// Name: TicTacToe(single)
// Description:Just another simple Tic T
//     ac Toe Game
// By: Gummi
//
// Inputs:Input keys (1-9)
//
// Returns:display board to screen
//
// Assumes:Need to know basic I/O statem
//     ents and arrays
//
// Side Effects:This program was compile
//     d using the free version Dev-C++ v4.0, t
//     ested on Win98, untested on other compil
//     ers and platform
//
//This code is copyrighted and has// limited warranties.Please see http://
//     www.Planet-Source-Code.com/vb/scripts/Sh
//     owCode.asp?txtCodeId=7136&lngWId;=3//for details.//**************************************
//     

#include <iostream.h>
#include <stdlib.h> //needed for rand
#include <windows.h>
void draw_board();
void player_movement();
void computer_movement();
bool check_for_winner(char player);
char board_info[9] = {'1','2','3',
'4','5','6',
'7','8','9'};
int main()
    {
    int counter = 0;
    bool winner = false;
    srand(GetTickCount()); //sets randomizer as time *unique*
    draw_board();
    for (int i = 0; i < 9 ; i++)
        {
        board_info[i] = ' ';
    }

    draw_board();
    //game loop
    while (true)
        {
        player_movement();
        draw_board();
        winner = check_for_winner('X');
        counter++;
        if (winner)
            {
            cout << "\nYou Win" << endl;
            break;
        }

        
        if (counter >= 9)
            {
            cout << "\nDraw Game" << endl;
            break;
        }

        computer_movement();
        draw_board();
        winner = check_for_winner('O');
        counter++;
        if (winner)
            {
            cout << "\nComputer Win" <<endl;
            break;
        }

        
    }

    
    system("PAUSE");
    return 0;
}

void draw_board()
    {
    cout << endl;
    for (int i = 0; i < 9; i++)
        {
        cout << " | " << board_info[i];
        if ((i+1) % 3 == 0) cout << endl << " -------------" <<endl;
    }

}

void player_movement()
    {
    int choice;
    cout << "\nPlease select a number from 1 - 9: ";
    cin >> choice;
    //Error Checking
    
    if (cin.fail())
        {
        cout << "Error!";
        exit(1);
    }

    
    while (choice >= 10 || choice <=0)
        {
        cout << "\nPlease select again: ";
        cin >> choice;
    }

    
    while (board_info[(choice-1)] != ' ')
        {
        cout << "\nPlease select again: ";
        cin >> choice;
    };

    
    board_info[choice-1] = 'X';
}

void computer_movement()
    {
    if ((int(board_info[0]) + int(board_info[1]) + int(board_info[2])) == (2*int(char('X')))+int(char(' ')))
        {
        if (board_info[0] == ' ') board_info[0] = 'O';
        else if (board_info[1] == ' ') board_info[1] = 'O';
        else if (board_info[2] == ' ') board_info[2] = 'O';
    }

    else if ((int(board_info[3]) + int(board_info[4]) + int(board_info[5])) == (2*int(char('X')))+int(char(' ')))
        {
        if (board_info[3] == ' ') board_info[3] = 'O';
        else if (board_info[4] == ' ') board_info[4] = 'O';
        else if (board_info[5] == ' ') board_info[5] = 'O';
    }

    else if ((int(board_info[6]) + int(board_info[7]) + int(board_info[8])) == (2*int(char('X')))+int(char(' ')))
        {
        if (board_info[6] == ' ') board_info[6] = 'O';
        else if (board_info[7] == ' ') board_info[7] = 'O';
        else if (board_info[8] == ' ') board_info[8] = 'O';
    }

    else if ((int(board_info[0]) + int(board_info[3]) + int(board_info[6])) == (2*int(char('X')))+int(char(' ')))
        {
        if (board_info[0] == ' ') board_info[0] = 'O';
        else if (board_info[3] == ' ') board_info[3] = 'O';
        else if (board_info[6] == ' ') board_info[6] = 'O';
    }

    else if ((int(board_info[1]) + int(board_info[4]) + int(board_info[7])) == (2*int(char('X')))+int(char(' ')))
        {
        if (board_info[1] == ' ') board_info[1] = 'O';
        else if (board_info[4] == ' ') board_info[4] = 'O';
        else if (board_info[7] == ' ') board_info[7] = 'O';
    }

    else if ((int(board_info[2]) + int(board_info[5]) + int(board_info[8])) == (2*int(char('X')))+int(char(' ')))
        {
        if (board_info[2] == ' ') board_info[2] = 'O';
        else if (board_info[5] == ' ') board_info[5] = 'O';
        else if (board_info[8] == ' ') board_info[8] = 'O';
    }

    else if ((int(board_info[0]) + int(board_info[4]) + int(board_info[8])) == (2*int(char('X')))+int(char(' ')))
        {
        if (board_info[0] == ' ') board_info[0] = 'O';
        else if (board_info[4] == ' ') board_info[4] = 'O';
        else if (board_info[8] == ' ') board_info[8] = 'O';
    }

    else if ((int(board_info[2]) + int(board_info[4]) + int(board_info[6])) == (2*int(char('X')))+int(char(' ')))
        {
        if (board_info[2] == ' ') board_info[2] = 'O';
        else if (board_info[4] == ' ') board_info[4] = 'O';
        else if (board_info[6] == ' ') board_info[6] = 'O';
    }

    else
        {
        int number = rand()%9; 
        while (board_info[number] != ' ') number = rand()%9;
        board_info[number] = 'O';
    }

}

bool check_for_winner(char player)
    {
    if ((board_info[0] == player && board_info[1] == player) && (board_info[2] == player))
    return true;
    if ((board_info[3] == player && board_info[4] == player) && (board_info[5] == player))
    return true;
    if ((board_info[6] == player && board_info[7] == player) && (board_info[8] == player))
    return true;
    if ((board_info[0] == player && board_info[3] == player) && (board_info[6] == player))
    return true;
    if ((board_info[1] == player && board_info[4] == player) && (board_info[7] == player))
    return true;
    if ((board_info[2] == player && board_info[5] == player) && (board_info[8] == player))
    return true;
    if ((board_info[0] == player && board_info[4] == player) && (board_info[8] == player))
    return true;
    if ((board_info[2] == player && board_info[4] == player) && (board_info[6] == player))
    return true; 
    else return false;
}