package GridBasics;

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

public class GraphicsPanel extends JPanel{
    private GridData data;

    public GraphicsPanel(GridData d){
        setPreferredSize(Utilities.PANEL_SIZE);
        data=d;
    }

    @Override
    public void paintComponent(Graphics g){
        for(int i=0; i<data.getGrid().length; i++){
            for(int j=0; j<data.getGrid()[i].length; j++){
                if(data.getGrid()[i][j]) {
                    g.fillRect(j * Utilities.CELL_SIZE, i*Utilities.CELL_SIZE, Utilities.CELL_SIZE, Utilities.CELL_SIZE);
                }
            }
        }

    }

}


package GridBasics;

import javax.swing.*;

public class GameFrame extends JFrame {
    GridData data;
    public GameFrame(GridData d){
        data=d;
        GraphicsPanel panel=new GraphicsPanel(data);
        add(panel);





        pack();
        setVisible(true);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

    }
}


package GridBasics;

public class MainClass {

    public static void main(String[]args){
        GridData data=new GridData();
        GameFrame frame=new GameFrame(data);
    }
}


package GridBasics;

public class GridData {
    private boolean[][] grid;

    public GridData(){
        grid=new boolean[Utilities.NUM_ROWS][Utilities.NUM_COLS];
        loadGrid();
        printGrid();
    }

    public void loadGrid(){

        for(int i=0; i<grid.length; i++){
            boolean cellValue=false;
            if(i%2==0) {
                cellValue = true;
            }
            for(int j=0; j<grid[i].length; j++){
                grid[i][j]=cellValue;
                cellValue=!cellValue;
            }
        }
    }

    public boolean[][] getGrid() {
        return grid;
    }

    public void setGrid(boolean[][] grid) {
        this.grid = grid;
    }

    public void printGrid(){
        for(boolean b[]:grid){
            for(boolean bool: b){
                System.out.print(bool);
            }
            System.out.println();
        }
    }
}


package GridBasics;

import java.awt.*;

public class Utilities {
    public static final int PANEL_HEIGHT=600, PANEL_WIDTH=600;
    public static final int CELL_SIZE=50;
    public static final int NUM_ROWS=PANEL_HEIGHT/CELL_SIZE;
    public static final int NUM_COLS=PANEL_WIDTH/CELL_SIZE;
    public static final Dimension PANEL_SIZE=new Dimension(PANEL_WIDTH, PANEL_HEIGHT);
}