用什么办法可以消除“游戏结束”这几个字被覆盖的

Question

用什么办法可以消除“游戏结束”这几个字被覆盖的

Answer 1

在java中用Timer 来实现 俄罗斯方块的开始和结束,那么用什么实现暂停和继续呢

Answer 2

不管用啊，查了下API，不是暂停的功能

Answer 3

try itimport java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.util.*;
import javax.swing.*;public class DelayedPaint {    private CenterPanel center;
    private JFrame frame;
    private JPanel panel;    public static void main(String args[]) {
        EventQueue.invokeLater(new Runnable() {            @Override
            public void run() {
                new DelayedPaint().createAndShowGUI();
            }
        });
    }    void createAndShowGUI() {
        frame = new JFrame("Delayed Paint");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.setSize(400, 400);
        panel = new JPanel(new BorderLayout());
        frame.setContentPane(panel);
        NorthPanel north = new NorthPanel();
        panel.add(north, BorderLayout.NORTH);
        center = new CenterPanel();
        panel.add(center, BorderLayout.CENTER);
        frame.setVisible(true);
        north.startTimer();
    }    class NorthPanel extends JPanel {        private JLabel lb;        public NorthPanel() {
            lb = new JLabel("Good morning");
            add(lb);
        }        public void startTimer() {
            ActionListener taskPerformer = new ActionListener() {                @Override
                public void actionPerformed(ActionEvent evt) {
                    setLayout(new FlowLayout(FlowLayout.LEFT));
                    lb.setText("Left");
//    timer.stop(); // Not needed if setRepeats(false).
                    center.startTimer();
                }
            };
            javax.swing.Timer timer = new javax.swing.Timer(2000, taskPerformer);
            timer.setRepeats(false);
            timer.start();
        }
    }    class CenterPanel extends JPanel {        private int icnt;
        private Font boldFont = new Font("Dialog", Font.BOLD, 15);
        private Properties centerProps;
        private javax.swing.Timer timer;        public CenterPanel() {
            centerProps = new Properties();
            centerProps.setProperty("circle", "false");
            centerProps.setProperty("lastString", "0");
        }        @Override
        public void paintComponent(Graphics g) {
            super.paintComponent(g);
            Graphics2D g2 = (Graphics2D) g;
            if (Boolean.valueOf(centerProps.getProperty("circle"))) {
                Dimension dim = frame.getSize();
                g2.draw(new Arc2D.Double(50, 25, dim.height - 100, dim.width - 100, 0, 360, Arc2D.OPEN));
            }
            int j = Integer.parseInt(centerProps.getProperty("lastString"));
            if (j > 0) {
                g2.setFont(boldFont);
                for (int i = 1; i <= j; i++) {
                    g2.drawString("" + (char) (i + 48), i * 10, 50);
                }
            }
        }        public void startTimer() {
            ActionListener taskPerformer = new ActionListener() {                @Override
                public void actionPerformed(ActionEvent evt) {
                    repaint(); // in paintComponent(...) icnt is already icnt+1.
                    icnt++;
                    if (icnt == 1) {
                        centerProps.setProperty("circle", "true");
                        timer.setDelay(500);
                    } else if (icnt <= 10) {
                        centerProps.setProperty("lastString", String.valueOf(icnt - 1));
                        if (icnt == 10) {
                            timer.stop();
                        }
                    }
                }
            };
            timer = new javax.swing.Timer(2000, taskPerformer);
            timer.start();
        }
    }
}

Answer 4

暂停时记录时间，重新开始时new一个新timer，从该时间开始。timer本身不支持pause功能

Answer 5

点“暂停”按钮时，记录时间，保存到全局变量，然后stop()