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#include <iostream>
#include <time.h>
#include <stdlib.h> /* srand, rand */
using namespace std;
void showboard(int takenplace[], char board[]); // to show the board and taken places to the player
int checkend(char board[]); // to check whether anybody has won
int checkdanger(char board[]); // for the AI to know when there is a potentially dangerous moment( ex. the opponent having two-in-a-row
// plz input 1 for the first player move to see the problem with this code
int main()
{
char board[10] = " O X "; // The board is made this way because this is the board that causes problems
int takenplace[9] = {1,2,3,4,0,6,7,0,9}; // Same here
int whowon = 0; // variable to show who won(1 = player, 2 = AI, 0 = draw)
int turns = 0; // Turns remembered in case of draw
cout << "Welcome to a game of TIC TAC TOE" << endl;
cout << "make a line of three 0s to win!" << endl;
cout << "Only type in numbers if you do not want the game to crash!" << endl;
int playermove = 0; // variable to store player's move
int compmove = 0; // variable to store AI's move
showboard(takenplace, board);
while(1)
{
//First player move
cout << "please pick a vacancy(number) to circle other than zero" << endl;
retryone: // where the code goes back to if player picks a wrong choice
cin >> playermove; // input player's move
if(takenplace[playermove-1] == 0)
{
cout << "please pick a place other than 0" << endl;;
goto retryone; // repick
}
else
{
cout << "please pick a number between 1 and 9 that is not zero";
goto retryone;
}
//Filling out the board
takenplace[playermove-1] = 0; // the taken place is replaced with a 0
board[playermove-1] = 'O'; // the board now has a 'O' circled
turns++;
showboard(takenplace, board);
if(checkend(board)) // checking to see if there is a 3-in-a-row
{
whowon = 1;
break;
}
else if(turns == 9) // checking to see if it is a draw
{
break;
}
//computer player move
compmove = checkdanger(board); // AI checking for imminent danger
// debugging
cout << board[0] << board[4] << board[8] << endl; // This is the part I don't understand
if(board[0] == board[4] && board[8] != ' ' && board[0] != ' ') // This is the code checking for a right-diagonal 'imminent danger' btw it's inside the checkdanger function
compmove = 9;
cout << compmove << endl; // Yet the AI move is still 0 instead of 9
system("pause"); // I have absolutely no clue why this happens... the others seem to work fine
//debugging
if(compmove == 0)
{
retrytwo:
srand (time(NULL)); // random seed initialize
compmove = rand() % 9 + 1; // pick a random number between 1 and 9
if(takenplace[compmove-1] == 0)
{
goto retrytwo; // retry if the move is taken
}
}
//Filling out the board
takenplace[compmove-1] = 0; // same as player
board[compmove-1] = 'X';
showboard(takenplace, board);
turns++;
if(checkend(board))
{
whowon = 2;
break;
}
}
if(whowon == 0)
{
cout << "It's a draw!" << endl;
}
else
{
cout << "Player " << whowon << " Has won!" << endl;
}
cin >> whowon;
}
void showboard(int takenplace[], char board[])
{
//drawing the board
cout << "This is the current tictactoe board" << endl << endl;
cout << "-------------" << endl;
cout << "| " << board[0] << " | " << board[1] << " | " << board[2] << " |" << endl;
cout << "-------------" << endl;
cout << "| " << board[3] << " | " << board[4] << " | " << board[5] << " |" << endl;
cout << "-------------" << endl;
cout << "| " << board[6] << " | " << board[7] << " | " << board[8] << " |" << endl;
cout << "-------------" << endl << endl;
cout << takenplace[0] << " " << takenplace[1] << " " << takenplace[2] << endl;
cout << takenplace[3] << " " << takenplace[4] << " " << takenplace[5] << endl;
cout << takenplace[6] << " " << takenplace[7] << " " << takenplace[8] << endl;
}
/*
0 1 2
3 4 5
6 7 8
*/
int checkend(char board[])
{
//horizontal
if(board[0] == board[1] && board[0] == board[2] && board[0] != ' ')
return 1;
else if(board[3] == board[4] && board[3] == board[5] && board[3] != ' ')
return 1;
else if(board[6] == board[7] && board[6] == board[8] && board[6] != ' ')
return 1;
//diagonal
else if(board[0] == board[4] && board[0] == board[8] && board[0] != ' ')
return 1;
else if(board[6] == board[4] && board[6] == board[2] && board[6] != ' ')
return 1;
//vertical
else if(board[0] == board[3] && board[0] == board[6] && board[0] != ' ')
return 1;
else if(board[1] == board[4] && board[1] == board[7] && board[1] != ' ')
return 1;
else if(board[2] == board[5] && board[2] == board[8] && board[2] != ' ')
return 1;
else
return 0;
}
int checkdanger(char board[])
{
//horizontal
if(board[0] == board[1] && board[2] == ' ' && board[0] != ' ')
return 3;
else if(board[0] == board[2] && board[1] == ' ' && board[0] != ' ')
return 2;
else if(board[1] == board[2] && board[0] == ' ' && board[1] != ' ')
return 1;
else if(board[3] == board[4] && board[5] == ' ' && board[3] != ' ')
return 6;
else if(board[3] == board[5] && board[4] == ' ' && board[3] != ' ')
return 5;
else if(board[4] == board[5] && board[3] == ' ' && board[4] != ' ')
return 4;
else if(board[6] == board[7] && board[8] == ' ' && board[6] != ' ')
return 9;
else if(board[6] == board[8] && board[7] == ' ' && board[6] != ' ')
return 8;
else if(board[7] == board[8] && board[6] == ' ' && board[7] != ' ')
return 7;
//diagonal
else if(board[0] == board[4] && board[8] != ' ' && board[0] != ' ') // WHY U NO WORK?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
return 9;
else if(board[0] == board[8] && board[4] != ' ' && board[0] != ' ')
return 5;
else if(board[8] == board[4] && board[0] != ' ' && board[8] != ' ')
return 1;
else if(board[6] == board[4] && board[2] == ' ' && board[6] != ' ')
return 3;
else if(board[2] == board[4] && board[6] == ' ' && board[2] != ' ')
return 7;
else if(board[6] == board[2] && board[4] == ' ' && board[6] != ' ')
return 5;
//vertical
else if(board[0] == board[3] && board[6] == ' ' && board[0] != ' ')
return 7;
else if(board[6] == board[3] && board[0] == ' ' && board[6] != ' ')
return 1;
else if(board[0] == board[6] && board[3] == ' ' && board[0] != ' ')
return 4;
else if(board[1] == board[4] && board[7] == ' ' && board[1] != ' ')
return 8;
else if(board[7] == board[4] && board[1] == ' ' && board[7] != ' ')
return 2;
else if(board[1] == board[7] && board[4] == ' ' && board[1] != ' ')
return 5;
else if(board[2] == board[5] && board[8] == ' ' && board[2] != ' ')
return 9;
else if(board[2] == board[8] && board[5] == ' ' && board[2] != ' ')
return 6;
else if(board[8] == board[5] && board[2] == ' ' && board[8] != ' ')
return 3;
else
return 0;
}
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