我正在尝试使用Swing制作乒乓球游戏。我有一个菜单屏幕，您可以在其中更改您的偏好，例如音乐、游戏速度，并且您可以选择多人游戏选项等。但是当我做出选择时，它们的值不会改变。我有主菜单课和计算机课。
例如:我想改变难度，这意味着改变人工智能的速度，但我无法做到。我期待着答案，也许这很简单，但我看不到。
这是我的代码:
public class MenuPanel
{
ScoreBoard sc = new ScoreBoard();
private JFrame mainFrame;
private JFrame optionsFrame;
private JPanel menuPanel;
private JPanel optionsPanel;
private JFrame gameEndFrame;
private JPanel gameEndPanel;
JCheckBox twoPlayer;
// creating the swing components and containers,
// there are two frames to swap between them,
// we tried to use cardLayout but it didn't work for us.
public MenuPanel() {
mainFrame = new JFrame("Welcome To Pong Game");
mainFrame.setSize(700,700);
mainFrame.setLayout(new CardLayout());
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
menuPanel = new JPanel(null);
menuPanel.setSize(700,700);
menuPanel.setVisible(true);
mainFrame.add(menuPanel);
optionsFrame = new JFrame("Settings");
optionsFrame.setSize(700, 700);
optionsFrame.setLayout(new CardLayout());
optionsFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel optionsPanel = new JPanel(null) ;
optionsPanel.setSize(700,700);
optionsPanel.setVisible(true);
optionsFrame.add(optionsPanel);
// mainPanel components
ImageIcon ic1 = new ImageIcon("C:\\Users\\Onur17\\Downloads\\Actions-player-play-icon.png");
ImageIcon ic2 = new ImageIcon("C:\\Users\\Onur17\\Downloads\\Settings-L-icon.png");
ImageIcon ic3 = new ImageIcon("C:\\Users\\Onur17\\Downloads\\cup-icon.png");
ImageIcon ic4 = new ImageIcon("C:\\Users\\Onur17\\Downloads\\Button-Close-icon.png");
ImageIcon ic5 = new ImageIcon("C:\\Users\\Onur17\\Downloads\\ice-2025937_960_720.jpg");
ImageIcon ic6 = new ImageIcon("C:\\Users\\Onur17\\Downloads\\tenis1.png");
JLabel mainLabel = new JLabel();
Font font = new Font("Papyrus", Font.BOLD,26);
mainLabel.setFont(font);
mainLabel.setForeground(Color.RED);
mainLabel.setText("PONG GAME");
JButton startButton = new JButton("Start Game");
JButton optionsButton = new JButton("Options");
JButton leaderButton = new JButton("Leaderboard");
JButton exitButton = new JButton("Exit");
JButton icb1 = new JButton(ic1);
JButton icb2 = new JButton(ic2);
JButton icb3 = new JButton(ic3);
JButton icb4 = new JButton(ic4);
JButton icb6 = new JButton(ic6);
// at first, we tried to keep our buttons and labels in panels
// but then we didn't add an image to label as the background
// so we created a JLabel to set its image as the background, we may remove it later.
JLabel mn = new JLabel(ic5);
mn.setBackground(Color.BLUE);
mn.setBounds(1, 1, 700, 700);
Font font3 = new Font("Calibri", Font.PLAIN, 20);
twoPlayer = new JCheckBox();
twoPlayer.setFont(font3);
twoPlayer.setForeground(Color.DARK_GRAY);
twoPlayer.setText(" MultiPlayer");
twoPlayer.setBounds(200, 350, 220, 40);
menuPanel.add(mn);
mn.add(mainLabel);
mn.add(startButton);
mn.add(optionsButton);
mn.add(leaderButton);
mn.add(exitButton);
mn.add(icb1);
mn.add(icb2);
mn.add(icb3);
mn.add(icb4);
mn.add(icb6);
mn.add(twoPlayer);
mainFrame.setVisible(true);
// the components added by their coordinates to make them look formal
mainLabel.setBounds(210, 100, 220, 40);
startButton.setBounds(200, 150, 220, 40);
optionsButton.setBounds(200, 200, 220, 40);
leaderButton.setBounds(200, 250, 220, 40);
exitButton.setBounds(200, 300, 220, 40);
icb1.setBounds(150, 150, 40, 40);
icb2.setBounds(150, 200, 40, 40);
icb3.setBounds(150, 250, 40, 40);
icb4.setBounds(150, 300, 40, 40);
icb6.setBounds(150,350,40,40);
startButton.setBorder(BorderFactory.createRaisedBevelBorder());
optionsButton.setBorder(BorderFactory.createRaisedBevelBorder());
leaderButton.setBorder(BorderFactory.createRaisedBevelBorder());
exitButton.setBorder(BorderFactory.createRaisedBevelBorder());
// optionsPanel components
JButton doneButton = new JButton("Done");
doneButton.setBounds(150,330,220,40);
doneButton.setBorder(BorderFactory.createRaisedBevelBorder());
Font font1 = new Font("Calibri", Font.PLAIN,24);
Font font2 = new Font("Calibri", Font.BOLD,19);
JLabel st = new JLabel();
st.setFont(font1);
st.setForeground(Color.DARK_GRAY);
st.setText("-OPTIONS-");
JLabel difficulty = new JLabel("Difficulty: ");
difficulty.setFont(font2);
difficulty.setForeground(Color.DARK_GRAY);
JLabel music = new JLabel("Sound: ");
music.setFont(font2);
music.setForeground(Color.DARK_GRAY);
JLabel gSpeed = new JLabel("Game Speed: ");
gSpeed.setFont(font2);
gSpeed.setForeground(Color.DARK_GRAY);
JLabel screen = new JLabel(ic5);
screen.setBackground(Color.BLUE);
screen.setBounds(1, 1, 700, 700);
JRadioButton rb1 = new JRadioButton("Easy");
JRadioButton rb2 = new JRadioButton("Normal");
JRadioButton rb3 = new JRadioButton("Hard");
JRadioButton rb4 = new JRadioButton("On");
JRadioButton rb5 = new JRadioButton("Off");
JRadioButton rb6 = new JRadioButton("x");
JRadioButton rb7 = new JRadioButton("2x");
JRadioButton rb8 = new JRadioButton("3x");
ButtonGroup bg1 = new ButtonGroup();
ButtonGroup bg2 = new ButtonGroup();
ButtonGroup bg3 = new ButtonGroup();
bg1.add(rb1);
bg1.add(rb2);
bg1.add(rb3);
bg2.add(rb4);
bg2.add(rb5);
bg3.add(rb6);
bg3.add(rb7);
bg3.add(rb8);
optionsPanel.add(screen);
screen.add(difficulty);
screen.add(st);
screen.add(gSpeed);
screen.add(rb1);
screen.add(rb2);
screen.add(rb3);
screen.add(rb4);
screen.add(rb5);
screen.add(rb6);
screen.add(rb7);
screen.add(rb8);
screen.add(music);
screen.add(doneButton);
st.setBounds(200,100,220,40);
difficulty.setBounds(100,150,90,40);
music.setBounds(100,200,90,40);
gSpeed.setBounds(100, 250, 120, 40);
rb1.setBounds(200,150,60,40);
rb2.setBounds(260,150,80,40);
rb3.setBounds(340, 150, 60, 40);
rb4.setBounds(200, 200, 50, 40);
rb5.setBounds(250,200,50,40);
rb6.setBounds(220, 250, 50, 40);
rb7.setBounds(270, 250, 50, 40);
rb8.setBounds(320, 250, 50, 40);
startButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Pong pong = new Pong();
sound("Marimba-music");
mainFrame.dispose();
if(twoPlayer.isSelected()) {
pong.c.isTwoPlayer = true;
}
else {
pong.c.isTwoPlayer = false;
}
}
});
optionsButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
mainFrame.setVisible(false);
optionsFrame.setVisible(true);
}
});
doneButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
optionsFrame.dispose();
Pong pong = new Pong();
if(rb1.isSelected())
{
pong.c.setUp(-10);;
pong.c.setDown(10);
}
else if(rb2.isSelected())
{
pong.c.setUp(-11);
pong.c.setDown(11);
}
else if(rb3.isSelected())
{
pong.c.setUp(-30);
pong.c.setDown(30);
}
if(rb4.isSelected())
{
sound("Marimba-music");
}
else if(rb5.isSelected())
{
soundStop("Marimba-music");
}
if(rb6.isSelected())
{
GamePanel g = new GamePanel();
g.x = 50;
}
else if(rb7.isSelected())
{
GamePanel g = new GamePanel();
g.x = 75;
}
else if(rb8.isSelected())
{
GamePanel g = new GamePanel();
g.x = 100;
System.out.println(g.x);
}
}
});
exitButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
mainFrame.dispose();
}
});
}
public void sound(String nm)
{
AudioStream BGM;
try {
InputStream test = new FileInputStream("./" +nm+".wav");
BGM = new AudioStream(test);
AudioPlayer.player.start(BGM);
}
catch(IOException error) {
JOptionPane.showMessageDialog(null, error.getMessage());
}
}
public void soundStop(String nm)
{
AudioStream BGM;
try {
InputStream test = new FileInputStream("./" +nm+".wav");
BGM = new AudioStream(test);
AudioPlayer.player.stop(BGM);
}
catch(IOException error) {
JOptionPane.showMessageDialog(null, error.getMessage());
}
}
}
我的Computer.class:
public class Computer
{
private GamePanel field;
private int y = Pong.WINDOW_HEIGHT / 2;
private int yCh = 0;
private int up = -10;
private int down = 10;
private int width = 20;
private int height = 90;
boolean isTwoPlayer = false;
public Computer() {
}
public void update(Ball b) {
if(y + height > Pong.WINDOW_HEIGHT)
{
y = Pong.WINDOW_HEIGHT - height;
}
else if(y < 0)
{
y = 0;
}
if(!isTwoPlayer) {
if(b.getY() < y+height && y >= 0)
{
yCh = up;
}
else if(b.getY() > y && y + height <= Pong.WINDOW_HEIGHT)
{
yCh = down;
}
y = y + yCh;
}
else {
y = y + yCh;
}
}
public void setYPosition(int speed) {
yCh = speed;
}
public void paint(Graphics g) {
g.setColor(Color.BLACK);
g.fillRoundRect(450, y, width, height, 10, 10);
}
public int getX() {
return 450;
}
public int getY() {
return y;
}
public int getWidth() {
return width;
}
public int getHeight() {
return height;
}
public int getUp() {
return up;
}
public int getDown() {
return down;
}
public void setUp(int up) {
this.up = up;
}
public void setDown(int down) {
this.down = down;
}
最佳答案
我不知道你的整个程序是如何构建的。但在这段代码中:
doneButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
optionsFrame.dispose();
Pong pong = new Pong();
您创建 Pong 类的新实例并设置新创建的实例的值。
此实例未在其他任何地方使用。您可能需要使用已在使用的 Pong 实例，或者让其他类使用新创建的实例。
关于java - 选定的变量在乒乓球游戏中不会改变 - Swing，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43292543/