how can I draw a board in 2d array?

hi
i'm trying to create a game called "Gomuku", but I don't know how to start this is my first game ever.. I need to create 10x10 board, JPanel, JButton to start the game "New Game" and a class called Square.java that holds int x,y,accupied;

this is Square.java class

Code:

---

public class Square {
    private final int row ;
    private final int col ;
    private int accupied=0;


    public Square(int r, int c) {
      row = r;
      col = c;
       
    }

  public void setAccupied(int ac) {
                accupied = ac;
  }
 
public int getAccupied()
  {
          return accupied;
  }
 
        }//end square class

---

Code:

---

class Board extends JPanel
{
        private Square sq[][] ;
       
        public void paintComponent(Graphics g)
        {  sq[10][10] = new Square(10,10);
                for (int row = 0;  row < 10;  row++) {
            for (int column = 0;  column < 10;  column++) {
                Square[row][column] = 0;
            }
          }
g.drawRect();
        }
}//end class board

---

I want to draw the squares now with this method g.drawRect(); but it takes four parameters :confused: do you know where to get examples like that maybe I will get benefit of them?
I'm just beginning to learn how to create games like these using Square.java class and a JPanel.

Thanks

you would need to use a thread if you wanted it to update constantly. I would recommend using images and just using a Gridlayout. Then just updating the images everytime someone makes a move. your way works, but it over complicates the problem. Also if you us buttons or images you can just add a mouse listener to it.

Code:

---

import java.awt.*;
import java.awt.geom.Line2D;
import javax.swing.*;

public class MakingAGrid extends JPanel {
    SquareRx[][] squares;
    final int PAD = 20;

    public MakingAGrid() {
        int ROWS = 10;
        int COLS = 10;
        squares = new SquareRx[ROWS][COLS];
        for(int i = 0; i < ROWS; i++) {
            for(int j = 0; j < COLS; j++) {
                squares[i][j] = new SquareRx(i, j);
            }
        }
    }

    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        int w = getWidth();
        int h = getHeight();
        double xInc = (double)(w - 2*PAD)/squares[0].length;
        double yInc = (double)(h - 2*PAD)/squares.length;
        // Draw vertical grid lines.
        g2.setPaint(Color.blue);
        for(int i = 0; i <= squares[0].length; i++) {
            double x = PAD + i*xInc;
            g2.draw(new Line2D.Double(x, PAD, x, h-PAD));
        }
        // Draw horizontal grid lines.
        for(int i = 0; i <= squares.length; i++) {
            double y = PAD + i*yInc;
            g2.draw(new Line2D.Double(PAD, y, w-PAD, y));
        }
    }

    public static void main(String[] args) {
        MakingAGrid test = new MakingAGrid();
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(test);
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
    }
}

class SquareRx {
    private final int row;
    private final int col;
    private boolean occupied = false;

    public SquareRx(int r, int c) {
        row = r;
        col = c;
    }

    public void setOccupied(boolean occupied) {
        this.occupied = occupied;
    }

    public boolean isOccupied() {
        return occupied;
    }
}

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cool :) Thank you very much!

How would you fill in those squares with the code posted above?

Code:

---

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;

public class SquareGrid extends JPanel {
    SquareRx[][] squares;
    final int PAD = 20;
    final int ROWS = 10;
    final int COLS = 10;

    public SquareGrid() {
        addMouseListener(ml);
    }

    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        if(squares == null) {
            initSquares();
        }
        // Draw squares.
        g2.setPaint(Color.blue);
        for(int i = 0; i < ROWS; i++) {
            for(int j = 0; j < COLS; j++) {
                squares[i][j].draw(g2);
            }
        }
    }

    private void initSquares() {
        squares = new SquareRx[ROWS][COLS];
        int w = getWidth();
        int h = getHeight();
        double xInc = (double)(w - 2*PAD)/COLS;
        double yInc = (double)(h - 2*PAD)/ROWS;
        for(int i = 0; i < ROWS; i++) {
            double y = PAD + i*yInc;
            for(int j = 0; j < COLS; j++) {
                double x = PAD + j*xInc;
                Rectangle2D.Double r =
                    new Rectangle2D.Double(x, y, xInc, yInc);
                squares[i][j] = new SquareRx(i, j, r);
            }
        }
    }

    private MouseListener ml = new MouseAdapter() {
        public void mousePressed(MouseEvent e) {
            Point p = e.getPoint();
            if(!isInGrid(p)) return;
            double xInc = (double)(getWidth() - 2*PAD)/COLS;
            double yInc = (double)(getHeight() - 2*PAD)/ROWS;
            int row = (int)((p.y-PAD)/yInc);
            int col = (int)((p.x-PAD)/xInc);
            System.out.println(squares[row][col]);
            boolean isSelected = squares[row][col].isSelected();
            squares[row][col].setSelected(!isSelected);
            repaint();
        }
    };

    private boolean isInGrid(Point p) {
        Rectangle r = getBounds();
        r.grow(-PAD, -PAD);
        return r.contains(p);
    }

    public static void main(String[] args) {
        SquareGrid test = new SquareGrid();
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(test);
        f.setSize(400,400);
        f.setLocation(100,100);
        f.setVisible(true);
        test.addComponentListener(test.cl);
    }

    private ComponentListener cl = new ComponentAdapter() {
        public void componentResized(ComponentEvent e) {
            squares = null;
            repaint();
        }
    };
}

class SquareRx {
    private final int row;
    private final int col;
    Rectangle2D.Double rect;
    Color color = new Color(140,200,160);
    Color bgColor = Color.orange;
    Color selColor = Color.red;
    private boolean selected = false;

    public SquareRx(int r, int c, Rectangle2D.Double rect) {
        row = r;
        col = c;
        this.rect = rect;
    }

    public void draw(Graphics2D g2) {
        g2.setPaint(selected ? selColor : bgColor);
        g2.fill(rect);
        g2.setPaint(color);
        g2.draw(rect);
    }

    public void setSelected(boolean selected) {
        this.selected = selected;
    }

    public boolean isSelected() { return selected; }

    public String toString() {
        return "SQUARE[row:" + row + ", col:" + col +
                    ", selected:" + selected + "]";
    }
}

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i tested the code. it's really cool. What if when it a box is clicked, an image should how should i do that? I was also doing a game but aan image should appear when a box is clicked... thank you...

That's cool... but i'm going to do Battlefield game. i need only draw mapping part... so how to put images in each selected cells?? i mean Obstacle images and target image? please help me...

It's been well over a year since the last post in this thread. If you have a question, please open a new thread. Closing this.