bubblet.java

Java 开发的弹跳球小游戏代码. 便于理解OO的概念.

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

/**
 * Representation of the game interface for Bubblet.
 */
public class Bubblet extends JFrame 
{
    // Interface variables
    private static final int NROWS = 10;     
    private static final int NCOLS = 7;
    private static final int NCOLORS = 5;
    
    private static final int VOFFSET = 30;
    private static final int VOFFSET2 = 10;
    private static final int HOFFSET  = 10;
        
    private static final int WSIZE = 20, HSIZE = 20;
    
    private final JButton newGame;
    private final JLabel score1;
    private final JLabel score2;
    private final JLabel group1;
    private final JLabel group2;
    
    private int scoreVal;
    private int groupVal;
    
    private Container pane;
    private Surface surface;
        
    /** Construct the frame */
    public Bubblet () 
    {
        super("Bubblet 0.7");
        
        pane = this.getContentPane();
        pane.setLayout(new BorderLayout());
        
        JPanel controls = new JPanel();
        
        newGame = new JButton("New Game");
        controls.add(newGame);
        
        scoreVal = 0;
        score1 = new JLabel("Score: ");
        controls.add(score1);
        
        score2 = new JLabel("0     ");
        // score2.setFont(new Font("SansSerif", Font.BOLD, 10));
        controls.add(score2);
        
        groupVal = 0;
        group1 = new JLabel("Group: ");
        controls.add(group1);
        
        group2 = new JLabel("0     ");
        // group2.setFont(new Font("SansSerif", Font.BOLD, 10));
        controls.add(group2);
        
        newGame.addActionListener(new ActionListener () {
            public void actionPerformed (ActionEvent e) {
                restart();
            }});
        
        pane.add(controls, "North");
                
        surface = new Surface(NROWS, NCOLS, NCOLORS, this);
        surface.setPreferredSize(new Dimension(NROWS*WSIZE+2*HOFFSET, VOFFSET+NCOLS*HSIZE+VOFFSET2));
        // surface.setPreferredSize(new Dimension(NROWS*WSIZE, NCOLS*HSIZE));
        JPanel tmpPanel = new JPanel(new FlowLayout());
        tmpPanel.add(surface);
        pane.add(tmpPanel, "Center");
        
        this.setSize(NROWS*WSIZE+2*HOFFSET, NCOLS*HSIZE+VOFFSET2);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.pack();
        this.setVisible(true);
    }
    
    public void setGroup (int n) 
    {
        group2.setText(n + "");
    }
    
    public void setScore (int n) 
    {
        score2.setText(n + "");
    }
        
    public void restart () 
    {
        scoreVal = 0;
        setScore(scoreVal);
        groupVal = 0;
        setGroup(groupVal);
        
        remove(surface);
        surface = new Surface(NROWS, NCOLS, NCOLORS, this);
        surface.setPreferredSize(new Dimension(NROWS*WSIZE+2*HOFFSET, VOFFSET+NCOLS*HSIZE+VOFFSET2));
        JPanel tmpPanel = new JPanel(new FlowLayout());
        tmpPanel.add(surface);
        pane.add(tmpPanel, "Center");
        
        validate();
        repaint();
    }
    
    /* Test class methods */
    public static void main (String[] args) 
    {
        Bubblet game = new Bubblet(); 
    }
}