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java - 与初始 UI 起始帧结合时游戏类帧事件处理丢失

转载 作者：行者123 更新时间：2023-12-02 07:29:41 26 4
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我正在为我的大学项目开发​​一个 Java 游戏。游戏由 UI(用于选择“玩”/“操作方法”/“高分”等)和游戏本身组成。用户界面和游戏可以完美地分开运行，但我在将它们组合起来时遇到了麻烦。尽管如此，我已经能够将两者结合起来。但是当通过 UI 访问游戏时，游戏将丢失所有事件处理(因此卡在“按空格键继续”)

检查以下代码并请帮忙:

这是 Game 类(绘制并显示游戏)

package AllPanels;

import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.Window;
import java.awt.event.*;
import javax.swing.ImageIcon;

public class BailoutGame extends Core implements MouseListener, MouseMotionListener, KeyListener {

    public static void main(String args[]) {
        System.out.println("inside main");
        new BailoutGame().run();
        System.out.println("outside main");
    }
    private Image map,t1,t2,t3,t4,t5,scope,background,stopwatch,hitmarker,shot;
    int x=329,y=30,escapePressCount, xShot,yShot,xMarker,yMarker,xBullet,yBullet,xTargetMedian,yTargetMedian,xMarkerMedian,yMarkerMedian;
    int totalBullets=15,bulletsCounter,bulletsLeft,killCounter=1,targetShotCounter=3;
    private boolean spaceBar,escapePressed,t1Shot;
    String msg="",space="Press Space-Bar To Start";

    @Override
    public void init(){
        System.out.println("inside game init");
        super.init();
        Window w = s.getFullScreenWindow();
        w.addKeyListener(this);
        w.addMouseListener(this);
        w.addMouseMotionListener(this);
        System.out.println("outside game init");
    }

    @Override
    public synchronized void draw(Graphics2D g) {
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);     
        Window w = s.getFullScreenWindow();
        map = new ImageIcon("/home/vivek/Projects/Java/GameRenderingTest/src/ImagesFolder/Map.png").getImage();
        scope = new ImageIcon("/home/vivek/Projects/Java/GameRenderingTest/src/ImagesFolder/Sniper Scope.png").getImage();
        t1 = new ImageIcon("/home/vivek/Projects/Java/GameRenderingTest/src/ImagesFolder/Target 1.png").getImage();
        t2 = new ImageIcon("/home/vivek/Projects/Java/GameRenderingTest/src/ImagesFolder/t2.png").getImage();
        background = new ImageIcon("/home/vivek/Projects/Java/GameRenderingTest/src/ImagesFolder/background.png").getImage();
        stopwatch = new ImageIcon("/home/vivek/Projects/Java/GameRenderingTest/src/ImagesFolder/Stopwatch.png").getImage();
        hitmarker = new ImageIcon("/home/vivek/Projects/Java/GameRenderingTest/src/ImagesFolder/HitMarker.png").getImage();
        shot = new ImageIcon("/home/vivek/Projects/Java/GameRenderingTest/src/ImagesFolder/Shot.png").getImage();

        g.drawImage(map, 0, 0, null);
        if(t1Shot == false){
            g.drawImage(t1,247,255,null);
        }
        g.drawImage(scope, x-1366,y-768,null);
        g.drawImage(stopwatch,1366-200,25,null);
        g.drawImage(hitmarker,-7,409,null);
        g.setColor(w.getForeground());
        g.drawString(PointSystem.displayPoints,50,50);
        if(spaceBar){
            g.drawString(GameTimer.time, 1250, 125);
        }
        if(t1Shot){
            if(PointSystem.headshot){
                xMarkerMedian = (62 + 124) / 2;
                yMarkerMedian = (426 + 530) / 2;
            }
            if(PointSystem.bodyshot){
                xMarkerMedian = (2 + 184) / 2;
                yMarkerMedian = (530 + 766) / 2;
            }
            g.drawImage(shot,xMarkerMedian+xMarker,yMarkerMedian+yMarker,null);
        }
        if(spaceBar == false ){
            g.setColor(w.getBackground());
            g.fillRect(0, 0, 1366, 768);
            g.setColor(w.getForeground());
            g.drawString(space, 550, 500);
        }
    }

    @Override
    public void mouseReleased(MouseEvent e) { }

    @Override
    public void mouseClicked(MouseEvent e) { }

    @Override
    public void mouseEntered(MouseEvent e) { }

    @Override
    public void mouseExited(MouseEvent e) { }

    @Override
    public void mouseDragged(MouseEvent e) { }

    @Override
    public void keyTyped(KeyEvent e) { }

    @Override
    public void keyReleased(KeyEvent e) { }

    @Override
    public void mousePressed(MouseEvent e) { 
        PointSystem.headshot = false;
        PointSystem.bodyshot = false;
        xShot = e.getX();
        yShot = e.getY();
        bulletsCounter++;
        bulletsManager(bulletsCounter);
        if((xShot >= 237) && (yShot >=247) && (xShot <= 282) && (yShot <= 298)){
            target1(xShot,yShot);
        }
    }

    @Override
    public void mouseMoved(MouseEvent e) {
        x = e.getX();
        y = e.getY();
    }

    @Override
    public void keyPressed(KeyEvent e) {
        if(e.getKeyCode() == KeyEvent.VK_ESCAPE){
            stop();
            if((escapePressCount % 2) != 0 && escapePressCount != 0 )
                escapePressed = true;
            else
                escapePressed = false;

            escapePressCount++;
        }
        if(e.getKeyCode() == KeyEvent.VK_SPACE){
            GameTimer.watchStart = System.currentTimeMillis();
            GameTimer.chronometer.start();
            spaceBar = true;
        }
    }

    public void target1(int xShot, int yShot) {

            }
        }
        PointSystem.TotalPoint(targetShotCounter);
    }

    public void bulletsManager(int bulletsCounter) {
        bulletsLeft = totalBullets - bulletsCounter;
        if(bulletsLeft==0){
            //GameOver Dialog.
        }
    }
}

核心类(完成所有后端工作)。

package AllPanels;

import java.awt.*;

public class Core {

    private static final DisplayMode modes[] = {
        new DisplayMode(800,600,32,0),
        new DisplayMode(800,600,24,0),
        new DisplayMode(800,600,16,0),
        new DisplayMode(1366,768,32,0),
        new DisplayMode(1366,768,24,0),
        new DisplayMode(1366,768,16,0),
    };
    private boolean running;
    protected ScreenManager s;

    public void stop(){
        running = false;
    }


    public void run(){
        System.out.println("inside run");
        try{
            init();
            gameLoop();
        }finally{
            s.restoreScreen();
        }
        System.out.println("outside run");
    }

    public void init(){
        System.out.println("inside Core init");
        s = new ScreenManager();
        DisplayMode dm = s.findFirstCompatibleMode(modes);
        s.setFullScreen(dm);               
        Window w = s.getFullScreenWindow();
        w.setFont(new Font("ubuntu",Font.PLAIN,20));
        w.setBackground(Color.BLACK);
        w.setForeground(Color.WHITE);
        running = true;       

        Toolkit toolkit = Toolkit.getDefaultToolkit();
        Image cursorImage = toolkit.getImage("Scope.png");
        Point cursorHotSpot = new Point(0,0);
        Cursor customCursor = toolkit.createCustomCursor(cursorImage, cursorHotSpot, "Cursor");
        w.setCursor(customCursor);

        GameTimer.watchStart = System.currentTimeMillis();
        System.out.println("outside Core init");
    }

    public void gameLoop(){
        System.out.println("inside gameLoop");
        long startingTime = System.currentTimeMillis();
        long cumTime = startingTime;
        while(running){
            long timePassed = System.currentTimeMillis() - cumTime;
            cumTime += timePassed;
            update(timePassed);
            Graphics2D g = s.getGraphics();
            draw(g);
            g.dispose();
            s.update();
            try{
                Thread.sleep(20);
            }
            catch(Exception ex){}
        }
        System.out.println("outside gameLoop");
    }

    public void update(long timePassed) {}

    public void draw(Graphics2D g) {};
}

最后一段代码:这是 UI 框架中的面板，我需要从中访问游戏

package AllPanels;

import java.awt.Cursor;
import java.awt.Graphics2D;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.Random;
import javax.swing.SwingWorker;

public class LoadingPanel extends javax.swing.JPanel implements PropertyChangeListener  {
     public static Task task;

    @Override
    public void propertyChange(PropertyChangeEvent evt) {
         if ("progress".equals(evt.getPropertyName())) {
            int progress = (Integer) evt.getNewValue();
            loadingBar.setValue(progress);
        } 
    } 
     public class Task extends SwingWorker<Void, Void> {
        @Override
        public Void doInBackground() {
            Random random = new Random();
            setProgress(0);
            for(int progress=0;progress<=100;progress++) {
                if(progress==2){
                    loadingLabel.setEnabled(true);
                }
                else if(progress==4){
                    detailsLabel.setEnabled(true);
                }
                else if(progress==7){
                    nameLabel.setText(""+MainFrame.playerName.toUpperCase());
                    nameLabel.setEnabled(true);
                }
                else if(progress==10){
                    if(AllPanels.MapPanel.mapNumber==1){
                        aoLabel.setText("BAILOUT");
                    }
                    aoLabel.setEnabled(true);
                }
                else if(progress==13){
                    missionLabel.setText("Find and Eliminate the 5 targets silently");
                    missionLabel.setEnabled(true);                           
                }
                else if(progress==16){
                    etaLabel.setText("03:00 Minutes");
                    etaLabel.setEnabled(true);   
                    loadingLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Loading Objects.png")));
                }
                else if(progress==31){
                    loadingLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Loading Shadows.png")));
                }
                else if(progress==46){
                    loadingLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Loading Sounds.png")));
                }
                else if(progress==61){
                    loadingLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Loading Targets.png")));
                }
                else if(progress==71){
                    loadingLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Loading AI.png")));
                }
                else if(progress==91){
                    loadingLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Loading Weapons.png")));
                }
                else if(progress==100){
                    loadingLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Done.png")));
                }
                try {
                    Thread.sleep(random.nextInt(500));
                } catch (InterruptedException e) {}
                setProgress(Math.min(progress, 100));
            }
            return null;
        }
        public void done(){
            setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
            startGameButton.setEnabled(true);
        }
    }

    public LoadingPanel() {
        initComponents();      
    }

    private void initComponents() {

        loadingBarCoverLabel = new javax.swing.JLabel();
        loadingBar = new javax.swing.JProgressBar();
        loadingStartButton = new javax.swing.JButton();
        detailsLabel = new javax.swing.JLabel();
        detailsCoverLabel = new javax.swing.JLabel();
        nameLabel = new javax.swing.JLabel();
        aoLabel = new javax.swing.JLabel();
        missionLabel = new javax.swing.JLabel();
        etaLabel = new javax.swing.JLabel();
        loadingLabel = new javax.swing.JLabel();
        startGameButton = new javax.swing.JButton();
        bgLabel = new javax.swing.JLabel();

        setOpaque(false);
        setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());

        loadingBarCoverLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Progress Bar Cover.png"))); 
        add(loadingBarCoverLabel, new org.netbeans.lib.awtextra.AbsoluteConstraints(25, 300, 820, 30));

        loadingBar.setBackground(new java.awt.Color(255, 255, 255));
        loadingBar.setFont(new java.awt.Font("BankGothic Md BT", 0, 24)); // NOI18N
        loadingBar.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(51, 153, 255), 2));
        loadingBar.setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
        loadingBar.setStringPainted(true);
        add(loadingBar, new org.netbeans.lib.awtextra.AbsoluteConstraints(25, 300, 820, 30));

        loadingStartButton.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Start Off.png"))); 
        loadingStartButton.setBorder(null);
        loadingStartButton.setDisabledIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Start Disabled.png"))); 
        loadingStartButton.setPressedIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Start Pressed.png"))); 
        loadingStartButton.setRolloverIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Start On.png")));
        loadingStartButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                loadingStartButtonActionPerformed(evt);
            }
        });
        add(loadingStartButton, new org.netbeans.lib.awtextra.AbsoluteConstraints(475, 20, 125, 40));

        detailsLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Details.png"))); 
        detailsLabel.setDisabledIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Details disabled.png"))); 
        detailsLabel.setEnabled(false);
        add(detailsLabel, new org.netbeans.lib.awtextra.AbsoluteConstraints(15, 90, 185, 170));
        detailsLabel.getAccessibleContext().setAccessibleDescription("");

        detailsCoverLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Text Cover.png"))); 
        add(detailsCoverLabel, new org.netbeans.lib.awtextra.AbsoluteConstraints(200, 90, 800, 170));

        nameLabel.setFont(new java.awt.Font("BankGothic Md BT", 0, 30));
        nameLabel.setForeground(new java.awt.Color(153, 191, 211));
        nameLabel.setEnabled(false);
        nameLabel.setVerticalTextPosition(javax.swing.SwingConstants.TOP);
        add(nameLabel, new org.netbeans.lib.awtextra.AbsoluteConstraints(200, 85, 800, 40));

        aoLabel.setFont(new java.awt.Font("BankGothic Md BT", 0, 30)); 
        aoLabel.setForeground(new java.awt.Color(153, 191, 211));
        aoLabel.setToolTipText("");
        aoLabel.setEnabled(false);
        add(aoLabel, new org.netbeans.lib.awtextra.AbsoluteConstraints(200, 130, 800, 40));

        missionLabel.setFont(new java.awt.Font("BankGothic Md BT", 0, 30)); 
        missionLabel.setForeground(new java.awt.Color(153, 191, 211));
        missionLabel.setEnabled(false);
        add(missionLabel, new org.netbeans.lib.awtextra.AbsoluteConstraints(200, 175, 800, 40));

        etaLabel.setFont(new java.awt.Font("BankGothic Md BT", 0, 30)); 
        etaLabel.setForeground(new java.awt.Color(153, 191, 211));
        add(etaLabel, new org.netbeans.lib.awtextra.AbsoluteConstraints(200, 220, 800, 40));

        loadingLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Loading Buildings.png"))); 
        loadingLabel.setDisabledIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Loading Disabled.png")));
        loadingLabel.setEnabled(false);
        add(loadingLabel, new org.netbeans.lib.awtextra.AbsoluteConstraints(475, 260, 385, 40));

        startGameButton.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/StartGame Off.png"))); 
        startGameButton.setDisabledIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/StartGame Disabled.png"))); 
        startGameButton.setEnabled(false);
        startGameButton.setOpaque(false);
        startGameButton.setPressedIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/StartGame Pressed.png"))); 
        startGameButton.setRolloverIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/StartGame On.png"))); 
        startGameButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                startGameButtonActionPerformed(evt);
            }
        });
        add(startGameButton, new org.netbeans.lib.awtextra.AbsoluteConstraints(860, 20, 140, 70));

        bgLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/UserInterface/Loading Panel/Loading Page.png")));
        add(bgLabel, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, -1, -1));
    }                       

    private void loadingStartButtonActionPerformed(java.awt.event.ActionEvent evt) {                                                   
        this.remove(loadingBarCoverLabel);
        MainFrame.backButton.setEnabled(false);
        loadingStartButton.setEnabled(false);
        setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        task = new Task();
        task.addPropertyChangeListener(this);
        task.execute();
    }                                                  

    private void startGameButtonActionPerformed(java.awt.event.ActionEvent evt) {                                                
        if(MapPanel.mapNumber==1){
            new BailoutGame().run();
        }
    }                                                          
    public static javax.swing.JLabel aoLabel;
    private javax.swing.JLabel bgLabel;
    private javax.swing.JLabel detailsCoverLabel;
    public static javax.swing.JLabel detailsLabel;
    public static javax.swing.JLabel etaLabel;
    public static javax.swing.JProgressBar loadingBar;
    public static javax.swing.JLabel loadingBarCoverLabel;
    public static javax.swing.JLabel loadingLabel;
    private javax.swing.JButton loadingStartButton;
    public static javax.swing.JLabel missionLabel;
    public static javax.swing.JLabel nameLabel;
    public static javax.swing.JButton startGameButton;               
}

最佳答案

扫描源代码，我一直在寻找有多个线程的地方，但没有看到它，尽管我可能错过了那部分。然而，您描述的症状是一种经典行为，其中需要多个线程的应用程序是单线程的，因此线程执行因某些操作而停止，例如轮询设备或从某些源读取输入时。

在我看来，Core 确实应该扩展 Thread。看看这个article on concurrency and multi-threading .

关于java - 与初始 UI 起始帧结合时游戏类帧事件处理丢失，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13087721/

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