tic tac toe game

[poonninja]

i have started a tic tac toe game. i can move the x around with the arrow keys.i dont know how to make it stay there when enter is pressed then create a new one. im using opengl if that makes a difference. thanks for the help.

[poonninja]

i have figured out that i need x's on every one that are the same colour as the background and when the arrows are pressed it makes them white. but when the user presses enter how would it make it stay when the arrows are pressed again?

[Return 0]

Why aren't you just dynamically creating an X object at the cell on keydown and setting its coords to whatever the cell is?

[poonninja]

how would i get it to stay when the user presses enter then create a new one in a blank space.

[JCED]

Brainstorming here:

Perhaps an array like this:

char marks[3][3];

Then you can set the position of the array to 'X' or 'O', depending on where the mark is. When you draw the board, add a step that goes through the array and draws any letters it encounters.

Remember, I'm brainstorming, I haven't actually tested it and it might need to be tweaked to work.

[meepokman]

I only have experience with console applications, but recently I did a similar program with a 9x9 grid. Use <space> to place the 'X' or 'O' where you want it, and 'W', 'A','S' and 'D' to move the pointer, it is posted below, hope it helps. I have not looked at it for sometime, so you probably have to figure out the code yourself.

#include <iostream>
#include <conio.h>//get character Console
using namespace std;

//class for boxes
class box
{
    public:
     box();
     char value,disp;
};

box::box()
{
    value='.';
    disp='.';
}

//initialize boxes for TICTACTOE
    box box1[9][9];
    char user,user1,user2;

//function to check boxes
void check_box(void)
{
    if(user==user1) cout<<"Player1";
    else if(user==user2) cout<<"Player2";

    cout<<endl<<endl;

    for(int x=0;x<9;x++)
    {
       for(int y=0;y<9;y++)
          cout<<"  "<<box1[x][y].disp;
       cout<<endl;
    }
    cout<<"\n\n\n";
}

//define user symbol
void user_symbol(void)
{
    user1 = '.';
    user2 = '.';

    cout<<"Define symbol for user1 (X or O) : ";
    while (user1!='x'&&user1!='X'&&user1!='o'&&user1!='O')
    {
        cin>>user1;
        if(user1!='x'&&user1!='X'&&user1!='o'&&user1!='O') cout<<"ERROR! Define symbol for user1 (x or o) : ";
    }

    if(user1=='x'||user1=='X')
    {
        user1='x';
        user2='o';
    }
    else
    {
        user1='o';
        user2='x';
    }

    cout<<"\n\nSymbol for user1 will be "<< user1 <<endl;
    cout<<"Symbol for user2 will be "<< user2 <<endl;
}

void init_cursor(short x,short y)//short half a machine word
{
    box1[x][y].disp='W';
}

short check_game(void)
{
    short x_start,y_start;
    bool status=0;

    for(y_start=0;y_start<9;y_start++)
    {
        for(x_start=0;x_start<9;x_start++)
        {
            for(int direction=0;direction<4;direction++)
            {
                switch(direction)
                {
                    case 0://towards down
                    if(box1[x_start][y_start].value==box1[x_start+1][y_start].value&&box1[x_start][y_start].value==box1[x_start+2][y_start].value&&box1[x_start][y_start].value==box1[x_start+3][y_start].value&&box1[x_start][y_start].value==box1[x_start+4][y_start].value)
                        if(box1[x_start][y_start].value!='.') status=1;
                    break;
                    case 1://towards right
                    if(box1[x_start][y_start].value==box1[x_start][y_start+1].value&&box1[x_start][y_start].value==box1[x_start][y_start+2].value&&box1[x_start][y_start].value==box1[x_start][y_start+3].value&&box1[x_start][y_start].value==box1[x_start][y_start+4].value)
                        if(box1[x_start][y_start].value!='.') status=1;
                    break;
                    case 2://towards bot right
                    if(box1[x_start][y_start].value==box1[x_start+1][y_start+1].value&&box1[x_start][y_start].value==box1[x_start+2][y_start+2].value&&box1[x_start][y_start].value==box1[x_start+3][y_start+3].value&&box1[x_start][y_start].value==box1[x_start+4][y_start+4].value)
                        if(box1[x_start][y_start].value!='.') status=1;
                    break;
                    case 3:
                    if(box1[x_start][y_start].value==box1[x_start+1][y_start-1].value&&box1[x_start][y_start].value==box1[x_start+2][y_start-2].value&&box1[x_start][y_start].value==box1[x_start+3][y_start-3].value&&box1[x_start][y_start].value==box1[x_start+4][y_start-4].value)
                        if(box1[x_start][y_start].value!='.') status=1;
                    break;
                }
            }
        }
    }


    return status;
}

//main function
int main()
{
    bool game_end;
    short x,y;
    char key;

    x=4;y=4;

//    key=getch();
//    cout<<key;

    user_symbol();
    user=user1;
    init_cursor(x,y);
    check_box();

    while(!game_end)
    {
        key=getch();
        if((key=='w'||key=='W')&&(x>0))
        {
            box1[x][y].disp=box1[x][y].value;
            x--;
        }
        else if((key=='s'||key=='S')&&(x<8))
        {
            box1[x][y].disp=box1[x][y].value;
            x++;
        }
        else if((key=='a'||key=='A')&&(y>0))
        {
            box1[x][y].disp=box1[x][y].value;
            y--;
        }
        else if((key=='d'||key=='D')&&(y<8))
        {
            box1[x][y].disp=box1[x][y].value;
            y++;
        }
        else if(key==' '&&box1[x][y].value=='.')
        {
            box1[x][y].value=user;
            if(user==user1) user=user2;
            else user=user1;
        }
        else if(key==27)//27 the "ESC"
        {
            game_end=1;
        }

        init_cursor(x,y);
        check_box();

        if(check_game()==1)
        {
            game_end=1;
            if(user==user1) user=user2;
            else user=user1;
            cout << user << " WINS THE GAME!! Congratulations!!\nThank you for playing this game." << endl;
        }
    }

    return 0;
}

Hope it helps.

P.S. I'm not sure why my post box is stretched so far right, sorry about that.