Hey
I'm trying to write a program to make a simple Tic-Tac-Toe Program. I just started coding it, so this is my rough draft version, i haven't worked on lots of checks i know i need to do later. However I have a big problem I cant seem to figure out how to solve.

I have three types of classes but 11 in total (The actual Frame class which makes the panels, 9 panel classes which are each just a box in the TicTacToe, and a PanelObject class which has all the methods to do stuff)
--All the code for these will be provided below--

In each Panel class (ex panel0.java) i instanciate a new PanelObject so I can use the PanelObject's methods. For example: PanelObject xyz = new PanelObject(); (Then in the panel0.java class I can do: xyz.getPlayerTurn(); ) The problem with this is that everytime the program uses a different panel it makes a different PanelObject. I need to keep track of what player went so I need a way for just one PanelObject to be instanciated for all 9 panel classes. For example, when user1 clicks panel 1, i track that user1 picked, but then when user2 clicks panel2, panel2 makes a new object(doesn't use the same) so it displays the user1 stuff instead of user2.
Hope that makes sense..

Heres the code..
Frame class:

import javax.swing.*;
import BreezySwing.*;
import java.awt.*;


public class TicTacToeFrame extends GBFrame
{
	
	private JLabel header;
	private GBPanel box0,box1,box2,box3,box4,box5,box6,box7,box8;
	private Panel0 panel0;
	private Panel1 panel1;
	private Panel2 panel2;
	private Panel3 panel3;
	private Panel4 panel4;
	private Panel5 panel5;
	private Panel6 panel6;
	private Panel7 panel7;
	private Panel8 panel8;

	
	public TicTacToeFrame()
	{
		header = addLabel("TicTacToe", 1,1,1,1);
		panel0 = new Panel0();
		panel1 = new Panel1();
		panel2 = new Panel2();
		panel3 = new Panel3();
		panel4 = new Panel4();
		panel5 = new Panel5();
		panel6 = new Panel6();
		panel7 = new Panel7();
		panel8 = new Panel8();
		
			
		box0 = addPanel(panel0, 2,1,1,1);
		box1 = addPanel(panel1, 2,2,1,1);
		box2 = addPanel(panel2, 2,3,1,1);
		box3 = addPanel(panel3, 3,1,1,1);
		box4 = addPanel(panel4, 3,2,1,1);
		box5 = addPanel(panel5, 3,3,1,1);
		box6 = addPanel(panel6, 4,1,1,1);
		box7 = addPanel(panel7, 4,2,1,1);
		box8 = addPanel(panel8, 4,3,1,1);
		
		box0.setBackground(Color.gray);
		box1.setBackground(Color.lightGray);
		box2.setBackground(Color.gray);
		box3.setBackground(Color.lightGray);
		box4.setBackground(Color.gray);
		box5.setBackground(Color.lightGray);
		box6.setBackground(Color.gray);
		box7.setBackground(Color.lightGray);
		box8.setBackground(Color.gray);
public static void main(String [] args)
	{
		TicTacToeFrame GUI = new TicTacToeFrame();
		GUI.setSize(500,500);
		GUI.setVisible(true);
		
	}

Heres code for ONE of the 9 panel classes I made:

import BreezySwing.*;
import java.awt.*;

public class Panel3 extends GBPanel
{
	PanelObject xyz = new PanelObject();
	public void mousePressed(int x, int y)
	{
		Graphics g = getGraphics();
		xyz.addPick("3");
		if(xyz.getPlayerTurn() == 1)
		{
			g.drawOval(10,10,10,10);
		}
		else
		{
			g.drawRect(10,10,10,10);
		}
		if (xyz.checkIfWon() == true)
		{
			g.drawString("Congratulations Player " + xyz.getPlayerTurn() + " Won", 10 , 10);
		}
		xyz.changePlayer();
	}
}

Heres code for PanelObject

import javax.swing.*;
import BreezySwing.*;
import java.awt.*;
import java.util.ArrayList;

public class PanelObject
{
	
	private int player1=1, player2;
	ArrayList player1Picks = new ArrayList();
	ArrayList player2Picks = new ArrayList();
	
	
	//return 1 if player 1 turn, else return 2 if player 2 turn
	public int getPlayerTurn()
	{
		if(player1 == 1 )
		   return 1;
		else
		   return 2;
	}
	
	//If player 1 turn over , change to player 2 turn
	public void changePlayer()
	{
		if(getPlayerTurn() == 1)
		{
			this.player1= 0;
			this.player2= 1;
		}
		else
		{
			this.player1=1;
			this.player2=0;
		}
		
	}
	public void addPick(String pick)
	{
		if(getPlayerTurn() == 1)
		{
			player1Picks.add(pick);
			
		}
		else
		{
			player2Picks.add(pick);
		}
	}
	
	public boolean checkIfWon()
	{
		
		String[] picks = new String[9];
		picks[0]="0";
		picks[1]="1";
		picks[2]="2";
		picks[3]="3";
		picks[4]="4";
		picks[5]="5";
		picks[6]="6";
		picks[7]="7";
		picks[8]="8";
		
		int[] check = new int[9];
		check[0]=0;
		check[1]=0;
		check[2]=0;
		check[3]=0;
		check[4]=0;
		check[5]=0;
		check[6]=0;
		check[7]=0;
		check[8]=0;
	
		if(getPlayerTurn() == 1)
		{
			for(int i = 0; i < player1Picks.size()  ; i ++)
			{
				for(int k=0; k< picks.length  ; k++)
				{
					if(player1Picks.get(i).equals(picks[k]))
					{
						check[k]=1; // sort in order
					}
				}
			}
			if(check[0]==1 && check[1]==1 && check[2]==1 || check[0]==1 && check[4]==1 && check[8]==1 ||
			check[0]==1 && check[3]==1 && check[6]==1 || check[1]==1 && check[4]==1 && check[7]==1 ||
			check[2]==1 && check[5]==1 && check[8]==1 || check[2]==1 && check[4]==1 && check[6]==1 ||
			check[3]==1 && check[4]==1 && check[5]==1 || check[6]==1 && check[7]==1 && check[8]==1)
			{
				return true;
			}
			else
				return false;
		}
		else
		{
			for(int b = 0; b < player1Picks.size()  ; b ++)
			{
				for(int c=0; c< picks.length  ; c++)
				{
					if(player1Picks.get(b).equals(picks[c]))
					{
						check[c]=1;
					}
				}
			}
			if(check[0]==1 && check[1]==1 && check[2]==1 || check[0]==1 && check[4]==1 && check[8]==1 ||
			check[0]==1 && check[3]==1 && check[6]==1 || check[1]==1 && check[4]==1 && check[7]==1 ||
			check[2]==1 && check[5]==1 && check[8]==1 || check[2]==1 && check[4]==1 && check[6]==1 ||
			check[3]==1 && check[4]==1 && check[5]==1 || check[6]==1 && check[7]==1 && check[8]==1)
			{
				return true;
			}
			else
				return false;
			
		}
		
	}
}

Note that I use this BreezySwing thing which is similar to Swing so just ignore the different syntax between them.

Also note: You ignore 90% of the code I just need to figure out how make the panel classes work with the panelObject class without making a new object every time. I just showed all the code to help understand.

Personally, I would'nt use all those classes. You could use one class and it still be just as efficent. Plus, I would use buttons and set the label of the button to either x or o, which will make it much easier to tell wether someone has won or not.

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