Google 奔跑吧小恐龙

Google 奔跑吧小恐龙

在Java中，可以使用JavaFX图形框架来实现游戏界面，使用多线程技术来实现游戏循环和动画效果。

以下是使用JavaFX和多线程实现奔跑吧小恐龙游戏的代码示例：

1.创建游戏面板并初始化游戏元素

public class GamePanel extends Pane {

    private final RectangleBounds dino = new RectangleBounds(50, 150, 50, 50, Color.GREEN);
    private final ObstacleManager obstacleManager = new ObstacleManager(this);

    public GamePanel() {
        setPrefSize(500, 300);
        getChildren().addAll(dino, obstacleManager);
    }

    public void start() {
        obstacleManager.start();
    }

    public void stop() {
        obstacleManager.stop();
    }

    public RectangleBounds getDino() {
        return dino;
    }

}

2.使用多线程实现游戏循环和动画效果

public class GameLoop extends AnimationTimer {

    private final GamePanel gamePanel;
    private final Sprite dinoSprite;
    private final ObstacleManager obstacleManager;

    public GameLoop(GamePanel gamePanel, Sprite dinoSprite, ObstacleManager obstacleManager) {
        this.gamePanel = gamePanel;
        this.dinoSprite = dinoSprite;
        this.obstacleManager = obstacleManager;
    }

    @Override
    public void handle(long now) {
        dinoSprite.update();
        obstacleManager.update();
        if (dinoSprite.intersect(obstacleManager.getObstacles())) {
            stop();
            gamePanel.stop();
        }
    }
    
}

3.创建障碍物管理器和障碍物对象

public class ObstacleManager extends Pane {

    private final List<RectangleBounds> obstacles = new ArrayList<>();
    private final Random random = new Random();
    private final GamePanel gamePanel;

    public ObstacleManager(GamePanel gamePanel) {
        this.gamePanel = gamePanel;
    }

    public void start() {
        getChildren().addAll(obstacles);
        Timeline timeline = new Timeline(
                new KeyFrame(Duration.seconds(1.5), event -> createObstacle())
        );
        timeline.setCycleCount(Animation.INDEFINITE);
        timeline.play();
    }

    public void stop() {
        obstacles.clear();
        getChildren().clear();
    }

    public List<RectangleBounds> getObstacles() {
        return obstacles;
    }

    private RectangleBounds createObstacle() {
        double size = random.nextDouble() * 40 + 30;
        double height = gamePanel.getHeight() - size - gamePanel.getDino().getHeight() + 5;
        RectangleBounds obstacle = new RectangleBounds(gamePanel.getWidth(), height, size, size, Color.BLUE);
        obstacles.add(obstacle);
        getChildren().add(obstacle);
        return obstacle;
    }

    public void update() {
        for (RectangleBounds obstacle : obstacles) {
            obstacle.setTranslateX(obstacle.getTranslateX() - 5);
        }
        obstacles.removeIf(obstacle -> obstacle.getTranslateX() + obstacle.getWidth() < 0);
    }
    
}

4.创建角色和障碍物对象，并用图形渲染显示

public class RectangleBounds extends Rectangle {

    public RectangleBounds(double x, double y, double width, double height, Paint fill) {
        super(x, y, width, height);
        setFill(fill);
    }

    public boolean intersect(List<RectangleBounds> boundsList) {
        for (RectangleBounds bounds : boundsList) {
            if (bounds.getBoundsInParent().intersects(this.getBoundsInParent())) {
                return true;
            }
        }
        return false;
    }

}

5.最后启动游戏

public class Game extends Application {
    
    @Override
    public void start(Stage primaryStage) throws Exception {
        GamePanel gamePanel = new GamePanel();
        Scene scene = new Scene(gamePanel);
        
        Sprite dinoSprite = new Sprite(gamePanel.getDino());
        GameLoop gameLoop = new GameLoop(gamePanel, dinoSprite, gamePanel.getObstacleManager());
        gameLoop.start();
        gamePanel.start();
        
        primaryStage.setScene(scene);
        primaryStage.setTitle("Run Dino Run");
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
    
}