/media/OneTouch 4/Documents/CAO/SourceCode/TicTacToe v2.0/tictactoe.cpp

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#include "tictactoe.h"
#include <iostream>



// TicTacToe
TicTacToe::TicTacToe(void)
{
    Reset();                                                // Reset the game
}

// Reset
void TicTacToe::Reset(void)
{
    for (int i=0;i<9;i++)                                   // For each cell
        Grid[i]=EMPTY;                                      // put the empty symbol inside
    NumMoves=0;                                             // Set the number of moves at zero
}



// DrawGame
void TicTacToe::DrawGame(void)
{
    char GridScreen[9];                                     // Create a copy of the game
    for (int i=0;i<9;i++)                                   // For each cell...
    {
        switch (Grid[i])                                    // ...analyze the cell
        {
        case 1 :    {GridScreen[i]='X'; break;}             // Cross
        case 2 :    {GridScreen[i]='O'; break;}             // Circle
        default :   {GridScreen[i]=1+i+'0'; break;}         // Empty cell (replace by the number of the cell
    }
    }
                                                            // Show the current game in text mode
    cout <<" "<<GridScreen[0]<< " | "<< GridScreen[1]<< " | "<< GridScreen[2]<<"\n";
    cout <<" "<<GridScreen[3]<< " | "<< GridScreen[4]<< " | "<< GridScreen[5]<<"\n";
    cout <<" "<<GridScreen[6]<< " | "<< GridScreen[7]<< " | "<< GridScreen[8]<<"\n";
}

// CurrentPlayer
char    TicTacToe::CurrentPlayer(void)
{
    return NumMoves%2+1;
}


// Play
char TicTacToe::Play(int NumCell)
{
    if (NumCell<1 || NumCell>9)                             // Check if it is a cell of the grid
        return 0;
    if (Grid[NumCell-1]!=EMPTY)                             // Check if th cell is empty
        return 0;

    Grid[NumCell-1]=NumMoves%2+1;                           // Place the mark in the grid
    History[NumMoves]=NumCell-1;                            // Memorize for history
    NumMoves++;                                             // Increase the number of moves
    return 1;                                               // Success
}

// Undo
int TicTacToe::Undo(void)
{
    if (NumMoves>=0)
    {
        NumMoves--;
        Grid[History[NumMoves]]=0;
    }
    return NumMoves;
}

// GameOver
char TicTacToe::GameOver(void)
{
    if (Grid[0]==Grid[1] && Grid[1]==Grid[2] && Grid[0]!=EMPTY) return Grid[0];
    if (Grid[3]==Grid[4] && Grid[4]==Grid[5] && Grid[3]!=EMPTY) return Grid[3];
    if (Grid[6]==Grid[7] && Grid[7]==Grid[8] && Grid[6]!=EMPTY) return Grid[6];
    if (Grid[0]==Grid[3] && Grid[3]==Grid[6] && Grid[0]!=EMPTY) return Grid[0];
    if (Grid[1]==Grid[4] && Grid[4]==Grid[7] && Grid[1]!=EMPTY) return Grid[1];
    if (Grid[2]==Grid[5] && Grid[5]==Grid[8] && Grid[2]!=EMPTY) return Grid[2];
    if (Grid[0]==Grid[4] && Grid[4]==Grid[8] && Grid[0]!=EMPTY) return Grid[0];
    if (Grid[2]==Grid[4] && Grid[4]==Grid[6] && Grid[6]!=EMPTY) return Grid[6];
    if (NumMoves==9) return DRAW;
    return 0;
}