D&D骰子机

Question

所以我正在尝试编写一个D&D掷骰子的代码，它会弹出一个有5个按钮的GUI，当按下时，会拉出一个带有掷骰子的消息。当我单击D4按钮时，它会拉出消息，并且每次我单击它时都只滚动1，以此类推。我对此感到非常困惑，我已经三年没有编码了，我试图重新开始，我觉得这是很容易的事情，但我不知道。我不知道为什么，但当它掷骰子时，它掷的是1。如果我能得到任何帮助，那就太好了，我不着急，我只是为了好玩

  import javax.swing.*;
     import java.awt.*;
     import java.awt.event.ActionEvent;
     import java.awt.event.ActionListener;
     import java.util.Random;

        public class GUIRNG implements ActionListener {

            int d4 = rand.nextInt(4) + 1;
            int d6 = rand.nextInt(6) + 1;
            int d8 = rand.nextInt(8) + 1;
            int d10 = rand.nextInt(10) + 1;
            int d20 = rand.nextInt(20) + 1;

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new GUIRNG().createGui();

                    }
                });
            }
            private enum Actions {
                D4,
                D6,
                D8,
                D10,
                D20,
        }
            public void createGui() {
                JFrame frame = new JFrame("D&D Dice Roller");
                frame.setSize(700, 700);
                frame.setVisible(true);
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                JPanel panel = new JPanel(new GridBagLayout());
                panel.setBackground(Color.black);
                frame.add(panel);
                frame.getContentPane().add(panel, BorderLayout.WEST);
                GridBagConstraints c = new GridBagConstraints();

        JButton button1 = new JButton("D4");
                button1.setActionCommand(Actions.D4.name());
                button1.addActionListener(this);
                d4 = rand.nextInt(4) + 1;
                c.gridx = 0;
                c.gridy = 0;
                c.insets = new Insets(40, 40, 40, 40);
                panel.add(button1, c); 

        JButton button2 = new JButton("D6");
                button2.setActionCommand(Actions.D6.name());
                button2.addActionListener(this);
                d6 = rand1.nextInt(6) + 1;
                c.gridx = 0;
                c.gridy = 1;
                panel.add(button2, c);

        JButton button3 = new JButton("D8");
                button3.setActionCommand(Actions.D8.name());
                button3.addActionListener(this);
                d8 = rand.nextInt(8) + 1;
                c.gridx = 0;
                c.gridy = 2;
                panel.add(button3, c);
                button3.addActionListener(this);

        JButton button4 = new JButton("D10");
                button4.setActionCommand(Actions.D10.name());
                button4.addActionListener(this);
                d10 = rand.nextInt(10) + 1;
                c.gridx = 0;
                c.gridy = 3;
                panel.add(button4, c);
                button4.addActionListener(this);

        JButton button5 = new JButton("D20");
                button5.setActionCommand(Actions.D20.name());
                button5.addActionListener(this);
                d20 = rand.nextInt(20) + 1;
                c.gridx = 0;
                c.gridy = 4;
                panel.add(button5, c);
                button5.addActionListener(this);
            }




            public void actionPerformed(ActionEvent e) {
                if (e.getActionCommand() == Actions.D4.name()) {
                    JOptionPane.showMessageDialog(null, "You rolled: "+d4);
                }
                if (e.getActionCommand() == Actions.D6.name()) {
                    JOptionPane.showMessageDialog(null, "You rolled: "+d6);
                }
                if (e.getActionCommand() == Actions.D8.name()) {
                    JOptionPane.showMessageDialog(null, "You rolled: "+d8);
                }
                if (e.getActionCommand() == Actions.D10.name()) {
                    JOptionPane.showMessageDialog(null, "You rolled: "+d10);
                }
                if (e.getActionCommand() == Actions.D20.name()) {
                    JOptionPane.showMessageDialog(null, "You rolled: "+d20);
                }
            }
        }


'

Answer 1

当你按下按钮的时候，你永远不会重新掷骰子。您在createGui中设置了骰子的值一次，并且再也不设置一次。如果要在单击按钮时更改骰子的值，则应在每次按下按钮时重新生成它们的值(即在actionPerformed中)。