Help ....!!!

please i need help with the part of computer , means , i wanna make this game now , computer vs player....
this is simple code , player vs player , which is also restarting the game , after the one player wins , or gets tie , need help with computer one
package TicTacToe;
import javax.swing.Timer;
import java.awt.*;
import java.awt.event.*;

import javax.swing.Timer;

just the starting

public class TicTacToe extends Frame
{
static Frame myFrame;
static int[] gridMark = new int[9];
static boolean xTurn = true;
static int numberClicks = 0;

static Timer timerGame;
public static void main(String[] args)
{

// create frame
myFrame = new Frame();
myFrame.setSize(300, 350);
myFrame.setTitle("Tic-Tac-Toe - X's Turn");
myFrame.setVisible(true);


// Grid selected

// draw and initialize grid
for (int i = 0; i < 9; i++)
{
gridMark[i] = 0;
}

myFrame.requestFocus();
// add listener for closing frame
myFrame.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
the timer method to get the lines

timerGame = new Timer(25, new ActionListener ()
{
public void actionPerformed(ActionEvent e)
{
Graphics g = myFrame.getGraphics();

g.clearRect(0,0,myFrame.getWidth(), myFrame.getHeight());
page1(g);

timerGame.stop();
}});

timerGame.start();




// add listener for mouse press
myFrame.addMouseListener(new MouseAdapter()
{
public void mousePressed(MouseEvent e)
{
int gridSelected;
int x = e.getX();
int y = e.getY();
// if we haven't clicked 9 times, can still click
if (numberClicks < 9 && x > 30 && x < 270 && y > 40 && y < 280)
{
/* determine which grid location was clicked
* each square is 80 pixels x 80 pixels
* offset by 30 on right and 40 on top
* number system:
* 0 | 1 | 2
* -----------
* 3 | 4 | 5
* -----------
* 6 | 7 | 8
*/

if (y > 200)
{
// one of three bottom grids
gridSelected = 6 + (x - 30) / 80;
y = 210;
}
else if (y > 120)
{
// one of three middle grids
gridSelected = 3 + (x - 30) / 80;
y = 130;
}
else
{
// one of three top grids
gridSelected = (x - 30) / 80;
y = 50;
}
// again if else statement starts..
// if nothing there, can draw new mark
if (gridMark[gridSelected] == 0)
{
numberClicks = numberClicks + 1;
Graphics myGraphics = myFrame.getGraphics();

// decide where to draw mark
x = 40 + (gridSelected % 3) * 80;
if (xTurn)
{

// draw X
gridMark[gridSelected] = 3;
myGraphics.setColor(Color.blue);
myGraphics.drawLine(x, y, x + 60, y + 60);
myGraphics.drawLine(x, y + 60, x + 60, y);
// check winner()
if(!checkWinner())
{
xTurn = false;
myFrame.setTitle("TicTacTOE - o's turn");
}}
else
{
// draw O
gridMark[gridSelected] = 5;
myGraphics.setColor(Color.red);
myGraphics.drawOval(x, y, 60, 60);
if(!checkWinner())
{
xTurn = true;
myFrame.setTitle("TicTacTOE - x's turn");
}



}
if (numberClicks == 9 )
{
myFrame.setTitle("Tic-Tac-Toe - its a tie");

Graphics g = myFrame.getGraphics();
Restart();
} }// for the second one
}
//Method to reset

if(numberClicks == 9 || numberClicks== 10)
{
if(x> myFrame.getWidth()/ 2 - 50 &&
x < myFrame.getWidth()/2 + 50 &&
y > 300 && y < 340)
{
reset();
}
}}
});
}
drawing lines method
public static void page1(Graphics g)

{
g.setColor(Color.black);
g.drawLine(110, 40, 110, 280);
g.drawLine(190, 40, 190, 280);
g.drawLine(30, 120, 270, 120);
g.drawLine(30, 200, 270, 200);
}// end of main

method just to show the restart button on the screen
public static void Restart()
{
Graphics g = myFrame.getGraphics();
g.setColor(Color.red);
g.fillRect((myFrame.getWidth()/ 2 - 50), 300 ,100, 40);
g.setColor(Color.black);
g.drawRect((myFrame.getWidth()/ 2 - 50) ,300,100,40);
g.setColor(Color.white);
g.setFont(new Font ("Arial", Font.BOLD,16));
g.drawString("Restart",myFrame.getWidth()/2 - 37,327);
}
method to reset , after pressing restart game will start again
public static void reset()
{
timerGame.start();
for (int i = 0; i < 9; i++)
{
gridMark[i] = 0;
}
xTurn = true;
numberClicks = 0;
myFrame.setTitle("Tic Tac Toe - x 's turn");
}

//method to check winner for x and o
public static boolean checkWinner()
{
if((gridMark[0] + gridMark[1] + gridMark[2] == 9 )||
(gridMark[3] + gridMark[4] + gridMark[5] == 9) ||
( gridMark[6] + gridMark[7] + gridMark[8] == 9)||
(gridMark[0] + gridMark[3] + gridMark[6] == 9 )||
(gridMark[1] + gridMark[4] + gridMark[7] == 9 )||
(gridMark[2] + gridMark[5] + gridMark[8] == 9) ||
(gridMark[0] + gridMark[4] + gridMark[8] == 9) ||
(gridMark[2] + gridMark[4] + gridMark[6] == 9))
{
// x, turn
numberClicks = 10;
myFrame.setTitle("X WINS!!!");

Restart();
return true;
}
if(((gridMark[0] + gridMark[1] + gridMark[2] == 15 )||(gridMark[3] + gridMark[4] + gridMark[5] == 15) ||
( gridMark[6] + gridMark[7] + gridMark[8] == 15) || (gridMark[0] + gridMark[3] + gridMark[6] == 15 )||
(gridMark[1] + gridMark[4] + gridMark[7] == 15 )|| (gridMark[2] + gridMark[5] + gridMark[8] == 15)||
(gridMark[0] + gridMark[4] + gridMark[8] == 15) || (gridMark[2] + gridMark[4] + gridMark[6] == 15)))
{
//o's turn
numberClicks = 10;
myFrame.setTitle("O WINS!!!");

Restart();
return true;
}
return false;

}



}

This reminds me of a chess program that I made one time and I wanted to be able to play against the computer.

What I did is I made three additional classes:

1. Player which was an abstract class which had a method called getMove().
2. HumanPlayer which was a concrete method that implemented getMove() by waiting until the user indicated his or her move in the GUI.

and

3. ComputerPlayer which was a concrete method that implementned getMove by calling findBestMove() which was a recursive method that would search ahead and find the best move.

findBestMove() would use and algorithm called mini-max. findBestMove would evaluate each possible move in turn trying to find the best move. At each level, the player would be switched and findBestMove() would be called again finding the best move for the other player.

With Tic-Tac-Toe, you can search all the way to the end of every possibility, always finding the best move.

akshaygoel96, you were told about the code tags in your previous thread. Does this advice have to be repeated every time you post code?

Also go through the Forum Rules, particularly the third paragraph. Then edit your post accordingly. To change the subject line, click 'Edit Post' and then 'Go Advanced'

db