In my game, I want the player to be able to press ESC and activate a menu. In this menu, they would be able to return to the home screen. I have tried to use .addKeyListener() as you will see below. I have tried using event.getKeyCode() == 27 and event.getKeyCode() == KeyEvent.VK_ESCAPE, but it doesn't seem to change the outcome(JFrame not registering "ESC" being pressed.
Is there a bug in my code? Or am I just missing something blatant..
Code(refer to this if you have an answer):
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.border.*;
public class Main {
static JFrame jframe = new JFrame();
static JLabel startingTitle = new JLabel("Welcome!");
static JPanel aiPanel = new JPanel();
static Font buttonFont = new Font("MineCrafter", Font.BOLD, 20);
static JFrame gameScreen = new JFrame();
static JFrame onevoneScreen = new JFrame();
static JFrame escScreen = new JFrame();
static JPanel onevonePanel = new JPanel();
static JFrame aiScreen = new JFrame();
static JPanel title = new JPanel();
static JButton onevone = new JButton("Multiplayer");
static JButton aifight = new JButton("Singleplayer");
static JButton BackToStart = new JButton("Back");
public Main(){
Font myFont = new Font("Serif", Font.BOLD, 30);
startingTitle.setFont(myFont);
startingTitle.setAlignmentX(Component.CENTER_ALIGNMENT);
onevone.setAlignmentX(Component.CENTER_ALIGNMENT);
aifight.setAlignmentX(Component.CENTER_ALIGNMENT);
title.setLayout(new BoxLayout(title, BoxLayout.Y_AXIS));
title.add(Box.createRigidArea(new Dimension(0, 50)));
title.add(startingTitle);
title.add(Box.createRigidArea(new Dimension(0, 50)));
title.add(aifight);
title.add(Box.createRigidArea(new Dimension(0, 25)));
title.addKeyListener(new MKeyListener());
title.add(onevone);
gameScreen.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
gameScreen.setLocationRelativeTo(null);
gameScreen.setExtendedState(JFrame.MAXIMIZED_BOTH);
gameScreen.add(title);
gameScreen.pack();
}
static void setEscScreen(boolean on){
escScreen.setVisible(on);
}
public static void main(String[] argv) throws Exception {
SwingUtilities.invokeLater(Main::new);
BackToStart.setFont(buttonFont);
BackToStart.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
aiPanel.setVisible(false);
onevonePanel.setVisible(false);
title.setVisible(true);
gameScreen.add(title);
}
});
JButton startGame = new JButton("Launch");
startGame.setFont(buttonFont);
startGame.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Started");
jframe.setVisible(false);
gameScreen.setVisible(true);
title.setVisible(true);
}
});
// Creates starting screen
onevone.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Activate 1v1");
title.setVisible(false);
onevonePanel.setVisible(true);
gameScreen.add(onevonePanel);
}
});
aifight.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Activate AI");
title.setVisible(false);
aiPanel.setVisible(true);
gameScreen.add(aiPanel);
}
});
// Creates onevoneScreen
JLabel onevoneTitle = new JLabel("1v1[In Progress]");
onevonePanel.add(onevoneTitle);
onevonePanel.addKeyListener(new MKeyListener());
// Creates aiScreen
JLabel aiTitle = new JLabel("ai[In Progress]");
aiPanel.add(aiTitle);
aiPanel.addKeyListener(new MKeyListener());
//Creates escScreen
escScreen.setLayout(new GridBagLayout());
escScreen.add(BackToStart, new GridBagConstraints());
escScreen.getContentPane().setBackground(new Color(211, 211, 211));
escScreen.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
escScreen.setLocationRelativeTo(null);
escScreen.setExtendedState(JFrame.MAXIMIZED_BOTH);
// Creates launch screen
jframe.setLayout( new GridBagLayout() );
jframe.add(startGame, new GridBagConstraints());
jframe.setSize(400, 350);
jframe.setVisible(true);
}
}
class MKeyListener extends KeyAdapter {
static boolean escapedOn = false;
public void keyPressed(KeyEvent event) {
char ch = event.getKeyChar();
int e = event.getKeyCode();
if (e == KeyEvent.VK_ESCAPE){
if (escapedOn == true){
System.out.println("escaped off");
Main.setEscScreen(false);
escapedOn = false;
} else if (escapedOn == false){
System.out.println("escaped on");
Main.setEscScreen(true);
escapedOn = true;
}
}
}
}
Another question that I would like to be answered(but doesn't have to be answered): Can I make the menu JFrame slightly transparent(so that you can see the game in the background)? If I can, can you implement it in the answer too?
