如何讓imageView在javafx中旋轉後面向它的方向移動

Question

我使用javafx製作遊戲，小雞圖片是我的主要玩家。我使用Imageview顯示小雞圖像。我希望這個小妞不斷地發光，當我按下向上箭頭時，我希望它停止旋轉並朝着它所面對的方向移動。 我使用setRotate來旋轉我的小雞。當我執行代碼時，我的小雞旋轉得很好，但是當我按下向上箭頭鍵盤時，它朝着隨機方向移動。我該如何解決它？

package javagame; 

    import java.util.ArrayList; 
    import javafx.animation.AnimationTimer; 
    import javafx.application.Application; 
    import javafx.event.ActionEvent; 
    import javafx.event.EventHandler; 
    import javafx.geometry.NodeOrientation; 
    import javafx.geometry.Point3D; 
    import javafx.scene.Scene; 
    import javafx.scene.control.Button; 
    import javafx.scene.image.Image; 
    import javafx.scene.image.ImageView; 
    import javafx.scene.input.KeyEvent; 
    import javafx.scene.layout.StackPane; 
    import javafx.scene.transform.Rotate; 
    import javafx.stage.Stage; 


    public class JavaGame extends Application { 

     @Override 
     public void start(Stage primaryStage) { 

      Chick test = new Chick(1); 

      test.setPosition(300,200); 



      StackPane root = new StackPane(); 
      root.getChildren().addAll(test); 

      Scene scene = new Scene(root, 900, 700); 

      ArrayList<String> input = new ArrayList<String>(); 

      scene.setOnKeyPressed(
       new EventHandler<KeyEvent>() 
       { 
        public void handle(KeyEvent e) 
        { 
         String code = e.getCode().toString(); 
         if (!input.contains(code)) 
          input.add(code); 
        } 
       }); 

    scene.setOnKeyReleased(
     new EventHandler<KeyEvent>() 
     { 
      public void handle(KeyEvent e) 
      { 
       String code = e.getCode().toString(); 
       input.remove(code); 
      } 
     }); 

    new AnimationTimer(){ 
     public void handle(long now){ 

      System.out.println(test.getNodeOrientation()); 
      System.out.println("effective " +test.getEffectiveNodeOrientation()); 

      if(input.contains("UP")){ 
       test.move(); 


       System.out.println(test.getAngle()); 
       System.out.println(test.getPosition()); 
       System.out.println("getRotate " +test.getRotate()); 
       System.out.println("local" +test.getLocalToSceneTransform()); 
       System.out.println("parent" +test.getLocalToParentTransform()); 



      } 
      else{ 
       test.stop(); 

       System.out.println(test.getAngle()); 
       System.out.println(test.getPosition()); 
       System.out.println("local" +test.getLocalToSceneTransform()); 
       System.out.println("parent" +test.getLocalToParentTransform()); 

      } 
     } 
    }.start(); 

    primaryStage.setTitle("java game"); 
    primaryStage.setScene(scene); 
    primaryStage.show(); 
} 


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

    } 

這裏就是我對球員

package javagame; 

    import static java.lang.Math.cos; 
    import static java.lang.Math.sin; 
    import javafx.animation.KeyFrame; 
    import javafx.animation.Timeline; 
    import javafx.scene.image.Image; 
    import javafx.scene.image.ImageView; 

    import javafx.event.ActionEvent; 
    import javafx.event.EventHandler; 

    import javafx.scene.layout.Pane; 
    import javafx.util.Duration; 

    public class Chick extends Pane{ 

private Image [] img = {new Image("file:img/0.png"), 
         new Image("file:img/pcTop.png"), new Image("file:img/rcTop.png"), 
         new Image("file:img/ycTop.png"),new Image("file:img/gcTop.png")}; 

private ImageView imageView; 
private double x; 
private double y; 
private double vx=1; 
private double vy=1; 
private double angle=0; 
private double q; 

private double toAngle = 1; 

private Timeline rotateAnimation; 
private Timeline translateAnimation; 

public Chick(){ 

} 

public Chick(int num){ 

    imageView = new ImageView(img[num]); 
    //vx=5; vy=5; 
    getChildren().clear(); 
    getChildren().addAll(imageView); 

    rotateAnimation = new Timeline(
     new KeyFrame(Duration.millis(100), e ->{ spin();} )); 
    rotateAnimation.setCycleCount(Timeline.INDEFINITE); 
    rotateAnimation.play(); 

    translateAnimation = new Timeline(
     new KeyFrame(Duration.millis(20), e ->{ move();} )); 
    translateAnimation.setCycleCount(Timeline.INDEFINITE); 



} 

public void setPosition(double x, double y){ 
    this.x = x; 
    this.y = y; 

    imageView.setTranslateX(x); 
    imageView.setTranslateY(y); 

} 
public String getPosition(){ 
    return "(" +x+ ", " +y+ ")"; 
} 

public double getQuardant(){ 
    if(angle>0 && angle<90)q=1; 
    if(angle>90 && angle<180)q=2; 
    if(angle>180 && angle<270)q=3; 
    if(angle>270 && angle<360)q=4; 
    else q=0; 

    return q; 
} 

public void move(){ 
    translateAnimation.play(); 
    rotateAnimation.stop(); 



    x += vx*cos(angle); 
    y += vy*sin(360-angle); 


    setPosition(x,y); 



    //this.relocation(x,y); 
} 
public void stop(){ 
    rotateAnimation.play(); 
    translateAnimation.stop(); 

} 



public void spin(){ 

    if(angle < 359)angle += toAngle; 
    else angle=0; 

    imageView.setRotate(angle); 
} 

public double getAngle(){ 
    return angle; 
} 
public void setToAngle(double d){ 
    toAngle = d; 
} 


    } 

Answer 1

創建之前，你計算你的罪，因爲你要的角度轉換爲弧度的類。 （Math.toRadians（））