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[java] Chess Board

Started by CodeTitan Dec 18, 2004 at 9:43 AM 1 replies 1.5k views

Original Post

Dec 18, 2004 at 9:43 AM

I am trying to model a chessboard in a Swing application. This board will eventually have chesspieces on it. I tried making the application have a GridLayout, and then I put JLabels into the different sections of the grid. That doesn't work, because I need an 8 by 8 coordinate system. I want to be able to say: Move piece on (2, 2) to (2, 3) etc. This doesn't work with a GridLayout. How, then, would I model the chessboard with Swing? I can't seem to find any sort of Swing coordinate system-friendly Layout.

garazdawi

Dec 18, 2004 at 3:57 PM

just create a overload the paint method in a JPanel object and use that new object to draw the chess board. Like so:

public class MyChessBoard extends JPanel {

public void paint(Graphics g){
// do graphics stuff with g
}
}

This class can be used just like any normal JPanel as it inherits all properties of it.

Nomad010

Dec 22, 2004 at 12:04 PM

I am making a chess game as well. You could just use a null layout.

Example:

import javax.swing.*;import java.awt.*;class Chessboard extends JFrame{ int screenWidth = 0; int screenHeight = 0; Color black = Color.black; Color white = Color.white;  Container field;  public Chessboard() {  super("Chessboard");    screenWidth = getToolkit().getScreenSize().width;  screenHeight = getToolkit().getScreenSize().height;  setJMenuBar(new ChessMenu());  field = getContentPane(); //What we draw to  setSize(600,600);  setLocation((screenWidth - 600)/2, (screenHeight - 600)/2);  setVisible(true); }  public static void main(String args[]) {  new Chessboard(); }

and

import javax.swing.*;import java.awt.*;import java.awt.event.*;class ChessMenu extends JMenuBar{ JMenu fileMenu; JMenu newGame;  JMenu gameMenu; JMenu difficulty; JMenu help;   JMenuItem openGame; JMenuItem openReplay; JMenuItem saveGame;  JMenuItem exit;  JMenuItem PvP;  JMenuItem PvC; JMenuItem CvC;  JMenuItem undoMove; JMenuItem redoMove; JMenuItem resign;  JMenuItem easyMode; JMenuItem moderateMode; JMenuItem hardMode; JMenuItem about;    public ChessMenu() {  fileMenu = new JMenu("File");  newGame = new JMenu("New Game");  gameMenu = new JMenu("Game");  difficulty = new JMenu("Difficulty");  help = new JMenu("Help");    PvP = new JMenuItem("Player vs. Player");  PvP.addActionListener(new ActionListener()  {   public void actionPerformed(ActionEvent e)   {    //Start a new game with two human players   }  });    PvC = new JMenuItem("Player vs. Computer");  PvC.addActionListener(new ActionListener()  {   public void actionPer  }  CvC = new JMenuItem("Computer vs. Computer");  openGame = new JMenuItem("Open Game...");  saveGame = new JMenuItem("Save Game");  openReplay = new JMenuItem("Open Replay...");  exit = new JMenuItem("Exit");  undoMove = new JMenuItem("Undo Move");  redoMove = new JMenuItem("Redo Move");  easyMode = new JMenuItem("Easy Mode");  moderateMode = new JMenuItem("Moderate Mode");  hardMode = new JMenuItem("Hard Mode");  resign = new JMenuItem("Resign");  about = new JMenuItem("About");     fileMenu.add(newGame);  fileMenu.add(openGame);  fileMenu.addSeparator();  fileMenu.add(saveGame);  fileMenu.addSeparator();  fileMenu.add(openReplay);  fileMenu.addSeparator();  fileMenu.add(exit);    newGame.add(PvP);  newGame.add(PvC);  newGame.add(CvC);  gameMenu.add(undoMove);  gameMenu.add(redoMove);  gameMenu.addSeparator();  gameMenu.add(difficulty);  gameMenu.addSeparator();  gameMenu.add(resign);    difficulty.add(easyMode);  difficulty.add(moderateMode);  difficulty.add(hardMode);    help.add(about);    add(fileMenu);  add(gameMenu);  add(help); } }

That's just a snippet of what I have done. The null parameter allows you enter in coord-based positions and have them work. However there are a couple of other problems that must be worked around.(Like having to set the container invisible and visible again just to refresh it.)

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