// example.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
using namespace std;

void Start (); // This is the Variable for the start of the game
void Draw (); // This is the variable to the Instructions and the game board
void AI (); // This is the variable to the AI
void OnePlayer (); // This is the 2 player variable

char cPosition [9]; // This is the variable for the board positions
bool bPositionCheck [9]; // This is the variable for all the false moves
char cPlayerMove; // This is the variable for the players move
bool bPlayerTurn; // This sets whos turn it is
bool bIsThereWinner; // This is the variable for the end of game scenario
int iPlayAi = '1';
int iPlayers = '2';


int _tmain(int argc, _TCHAR* argv[])
{
        // This portion of the code starts the game, firstly going to each section to gather the information needed
        // Once it had reached the Draw section, it starts the main loop.

    Start ();

    int yes_no;

    yes_no = 0;

    system("CLS");
    cout << "Welcome to Tic Tac Toe!" << endl;
    cout << "" << endl;
    cout << "Instructions!" << endl;
    cout << "" << endl;
    cout << "Only one player can occupie a position at any time" << endl;
    cout << "" << endl;
    cout << "To win the game you must either have three squares going" << endl;
    cout << "Horizontally, Vertically or Diagonally" << endl;
    cout << "" << endl;
    cout << "When all the squares are taken and there is no winner, you have a draw" << endl;
    cout << "" << endl;
    cout << "" << endl;
    cout << "Would you like to play versus the AI or Two Player?" << endl;
    cout << "Choose 1 for versus computer and 2 for Player" << endl;

try_again:
    cin >> yes_no;
    if (yes_no == 1)
    {
        OnePlayer();
    }
    else if (yes_no == 2)
    {
    }
    else
    {
        cout << "Thats not a valid input, try again" << endl;
        goto try_again;
    }

game_start:
        Draw ();

cPlayerMoveCheck:
        cin >> cPlayerMove; // This is the players move section
        if (bPositionCheck [cPlayerMove - 48] == 1)
        {
                cout << "choose again" << endl; // If they enter an incorrect number they are asked to choose again
                goto cPlayerMoveCheck;
        };
        if (bPlayerTurn == 0)
        {
                cPosition [cPlayerMove - 48] = 88; // This displays X
                bPlayerTurn = 1;
        }
        else
        {
                cPosition [cPlayerMove - 48] = 79; // This Displays O
                bPlayerTurn = 0;
        };
        bPositionCheck [cPlayerMove - 48] = 1;

        // This section checks for win conditions for X

        if (cPosition [1] == 88 && cPosition [2] == 88 && cPosition [3] == 88)
        {
        bIsThereWinner = 1; // win conditions for spaces 1,2,3
        }
                else if (cPosition [4] == 88 && cPosition [5] == 88 && cPosition [6] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 4,5,6
        }
                else if (cPosition [7] == 88 && cPosition [8] == 88 && cPosition [9] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 7,8,9
        }
                else if (cPosition [1] == 88 && cPosition [4] == 88 && cPosition [7] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,4,7
        }
                else if (cPosition [2] == 88 && cPosition [5] == 88 && cPosition [8] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 2,5,8
        }
                else if (cPosition [3] == 88 && cPosition [6] == 88 && cPosition [9] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 3,6,9
        }
                else if (cPosition [1] == 88 && cPosition [5] == 88 && cPosition [9] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,5,7
        }
                else if (cPosition [3] == 88 && cPosition [5] == 88 && cPosition [7] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 3,5,7
        };

                // This section checks for win conditions for O

        if (cPosition [1] == 79 && cPosition [2] == 79 && cPosition [3] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,2,3
        }
                else if (cPosition [4] == 79 && cPosition [5] == 79 && cPosition [6] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 4,5,6
        }
                else if (cPosition [7] == 79 && cPosition [8] == 79 && cPosition [9] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 7,8,9
        }
                else if (cPosition [1] == 79 && cPosition [4] == 79 && cPosition [7] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,4,7
        }
                else if (cPosition [2] == 79 && cPosition [5] == 79 && cPosition [8] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 2,5,8
        }
                else if (cPosition [3] == 79 && cPosition [6] == 79 && cPosition [9] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 3,6,9
        }
                else if (cPosition [1] == 79 && cPosition [5] == 79 && cPosition [9] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,5,9
        }
                else if (cPosition [3] == 79 && cPosition [5] == 79 && cPosition [7] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 3,5,7
        };

        if (bIsThereWinner == 0) // this states if there is no winner go to start
        {
        goto game_start; // this calls to the start
        }
        else if(bIsThereWinner == 1) // If there is a winner print out YOU HAVE WON!
        {
                cout << "You Have WON!!" << endl;
        }
}

void Start ()
{
        // This section defines the position checks, and the ascii code for the places on the board, 1-9

        bPlayerTurn = 0;
        cPosition[1] = 49;
        cPosition[2] = 50;
        cPosition[3] = 51;
        cPosition[4] = 52;
        cPosition[5] = 53; // Ascii code for places on the board, 49-57 = 1-9
        cPosition[6] = 54;
        cPosition[7] = 55;
        cPosition[8] = 56;
        cPosition[9] = 57;

        bPositionCheck[1] = 0;
        bPositionCheck[2] = 0;
        bPositionCheck[3] = 0;
        bPositionCheck[4] = 0; // Checking for valid positions
        bPositionCheck[5] = 0;
        bPositionCheck[6] = 0;
        bPositionCheck[7] = 0;
        bPositionCheck[8] = 0;
        bPositionCheck[9] = 0;
        bIsThereWinner = 0;
}

void Draw ()
{
                        // This section is what is drawn at the beginning, the board and the instructions
        // Game board
        system("CLS");
        cout << cPosition[1] << " | " << cPosition[2] << " | " << cPosition[3] << endl << endl;
        cout << cPosition[4] << " | " << cPosition[5] << " | " << cPosition[6] << endl << endl;
        cout << cPosition[7] << " | " << cPosition[8] << " | " << cPosition[9] << endl << endl;

}


void OnePlayer ()

{
cPlayerMoveCheck:
        Draw ();
        cin >> cPlayerMove;
        if (bPositionCheck [cPlayerMove - 48] == 1) // Another valid move check
        {
                cout << "choose again" << endl; // cout statement asking for you to enter a valid number
                goto cPlayerMoveCheck; // Calling back to
        };
        cPosition [cPlayerMove - 48] = 88; // Referring to player X
        bPositionCheck [cPlayerMove - 48] = 1;
        AI();

                // Win COnditions for X AI

        if (cPosition [1] == 88 && cPosition [2] == 88 && cPosition [3] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,2,3
        }
                else if (cPosition [4] == 88 && cPosition [5] == 88 && cPosition [6] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 4,5,6
        }
                else if (cPosition [7] == 88 && cPosition [8] == 88 && cPosition [9] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 7,8,9
        }
                else if (cPosition [1] == 88 && cPosition [4] == 88 && cPosition [7] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,4,7
        }
                else if (cPosition [2] == 88 && cPosition [5] == 88 && cPosition [8] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 2,5,8
        }
                else if (cPosition [3] == 88 && cPosition [6] == 88 && cPosition [9] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 3,6,9
        }
                else if (cPosition [1] == 88 && cPosition [5] == 88 && cPosition [9] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,5,9
        }
                else if (cPosition [3] == 88 && cPosition [5] == 88 && cPosition [7] == 88)
        {
        bIsThereWinner = 1; //win conditions for spaces 3,5,7
        };

                // Win Conditions for O AI

        if (cPosition [1] == 79 && cPosition [2] == 79 && cPosition [3] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,2,3
        }
                else if (cPosition [4] == 79 && cPosition [5] == 79 && cPosition [6] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 4,5,6
        }
                else if (cPosition [7] == 79 && cPosition [8] == 79 && cPosition [9] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 7,8,9
        }
                else if (cPosition [1] == 79 && cPosition [4] == 79 && cPosition [7] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,4,7
        }
                else if (cPosition [2] == 79 && cPosition [5] == 79 && cPosition [8] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 2,5,8
        }
                else if (cPosition [3] == 79 && cPosition [6] == 79 && cPosition [9] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 3,6,9
        }
                else if (cPosition [1] == 79 && cPosition [5] == 79 && cPosition [9] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 1,5,9
        }
                else if (cPosition [3] == 79 && cPosition [5] == 79 && cPosition [7] == 79)
        {
        bIsThereWinner = 1; //win conditions for spaces 3,5,7
        };
        if (bIsThereWinner == 0)
        {
                goto cPlayerMoveCheck; // If Theres no winner go back to start
        }
        else if(bIsThereWinner == 1)
        {
                cout << "You Have Won!" << endl; // If there is a winner print out You Have Won!
                }

}

void AI ()
{
        bool bMove;

        bMove = 0;

        while (bMove == 0)
        {
                if (bPositionCheck[5] == 0) // for the center spot
                {
                        cPosition[5] = 79;  // This is position to mark O

                        bPositionCheck[5] = 1;  // valid move check for the space

                        bMove = 1;       // Valid Move
                }
                                // trying to block move by checking if squares on either side are taken
                else if (bPositionCheck[1] == 1 && bPositionCheck[3] == 1 && bPositionCheck[2] == 0)
                {
                        cPosition[2] = 79;  // This is position to mark O

                        bPositionCheck[2] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                                // trying to block move by checking if squares on either side are taken
                else if (bPositionCheck[4] == 1 && bPositionCheck[6] == 1 && bPositionCheck[5] == 0)
                {
                        cPosition[5] = 79; // This is position to mark O

                        bPositionCheck[5] = 1;  // valid move check for the space

                        bMove = 1; // Valid Move
                }
                                // trying to block move by checking if squares on either side are taken
                else if (bPositionCheck[7] == 1 && bPositionCheck[9] == 1 && bPositionCheck[8] == 0)
                {
                        cPosition[8] = 79; // This is position to mark O

                        bPositionCheck[8] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                                // trying to block move by checking if squares on either side are taken
                else if (bPositionCheck[1] == 1 && bPositionCheck[7] == 1 && bPositionCheck[4] == 0)
                {
                        cPosition[4] = 79; // This is position to mark O

                        bPositionCheck[4] = 1;  // valid move check for the space

                        bMove = 1; // Valid Move
                }
                                // trying to block move by checking if squares on either side are taken
                else if (bPositionCheck[2] == 1 && bPositionCheck[8] == 1 && bPositionCheck[5] == 0)
                {
                        cPosition[5] = 79; // This is position to mark O

                        bPositionCheck[5] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                                // trying to block move by checking if squares on either side are taken
                else if (bPositionCheck[3] == 1 && bPositionCheck[9] == 1 && bPositionCheck[6] == 0)
                {
                        cPosition[6] = 79; // This is position to mark O

                        bPositionCheck[6] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                                // trying to block move by checking if squares on either side are taken
                else if (bPositionCheck[1] == 1 && bPositionCheck[9] == 1 && bPositionCheck[5] == 0)
                {
                        cPosition[5] = 79; // This is position to mark O

                        bPositionCheck[5] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                                // trying to block move by checking if squares on either side are taken
                else if (bPositionCheck[3] == 1 && bPositionCheck[7] == 1 && bPositionCheck[5] == 0)
                {
                        cPosition[5] = 79; // This is position to mark O

                        bPositionCheck[5] = 1;  // valid move check for the space

                        bMove = 1; // Valid Move
                }
                else if (bPositionCheck[1] == 0) //Checking for empty space
                {
                        cPosition[1] = 79; // This is position to mark O

                        bPositionCheck[1] = 1;  // valid move check for the space

                        bMove = 1; // Valid Move
                }
                else if (bPositionCheck[3] == 0)
                {
                        cPosition[3] = 79; // This is position to mark O

                        bPositionCheck[3] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                else if (bPositionCheck[7] == 0)
                {
                        cPosition[7] = 79; // This is position to mark O

                        bPositionCheck[7] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                else if (bPositionCheck[9] == 0)
                {
                        cPosition[9] = 79; // This is position to mark O

                        bPositionCheck[9] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                else if (bPositionCheck[2] == 0)
                {
                        cPosition[2] = 79; // This is position to mark O

                        bPositionCheck[2] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                else if (bPositionCheck[8] == 0)
                {
                        cPosition[8] = 79; // This is position to mark O

                        bPositionCheck[8] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                else if (bPositionCheck[4] == 0)
                {
                        cPosition[4] = 79; // This is position to mark O

                        bPositionCheck[4] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
                }
                else if (bPositionCheck[6] == 0)
                {
                        cPosition[6] = 79; // This is position to mark O

                        bPositionCheck[6] = 1; // valid move check for the space

                        bMove = 1; // Valid Move
 }


                };
}