老虎机 TimeLine 动画不工作

Question

我正在尝试开发老虎机卷轴应用程序。我有一个自定义卷轴窗格，它垂直添加 children。单击旋转按钮时，child 人必须移动，当最后一个 child 到达边界时，它必须将其位置移到第一个 child 上方。我所做的如下所示。

public class ReelPane extends Pane {

    Timeline timeline = new Timeline();


    @Override
    protected void layoutChildren() {

        List<Node> managed = getChildren();
        double y = 0;
        for (Node node : managed) {
            node.setLayoutX(0);
            node.setLayoutY(y);
            y += node.getBoundsInLocal().getHeight();
        }
    }

    public void spin() {
        List<Node> managed = getChildren();
        double dy = 4;
        for (Node node : managed) {
            timeline.getKeyFrames().addAll(new KeyFrame(Duration.millis(2000),new KeyValue(node.layoutYProperty(),node.getLayoutY()+dy)));

            if(node.getLayoutY()>=600){
                node.setLayoutY(-50);
            }

        }
        timeline.setCycleCount(Timeline.INDEFINITE);
        timeline.play();
    }
}

fxml 文件

<?import javafx.scene.control.Button?>
<?import javafx.scene.image.*?>
<?import javafx.scene.layout.Pane?>
<?import sample.ReelPane?>
<Pane stylesheets="@css/slot.css"
      xmlns:fx="http://javafx.com/fxml/1"
      xmlns="http://javafx.com/javafx"
      fx:controller="sample.Controller">
    <ReelPane fx:id="reel" styleClass="container">

        <ImageView fitHeight="100" fitWidth="100">
            <Image url="/sample/resources/apple.png"/>
        </ImageView>

        <ImageView fitHeight="100" fitWidth="100">
            <Image url="/sample/resources/diamond.png"/>
        </ImageView>

        <ImageView fitHeight="100" fitWidth="100">
            <Image url="/sample/resources/glass.png"/>
        </ImageView>

        <ImageView fitHeight="100" fitWidth="100">
            <Image url="/sample/resources/grape.png"/>
        </ImageView>

        <ImageView fitHeight="100" fitWidth="100">
            <Image url="/sample/resources/star.png"/>
        </ImageView>
    </ReelPane>

    <Button fx:id="spin" text="SPIN"/>
</Pane>

控制器

package sample;

import javafx.fxml.FXML;
import javafx.scene.control.Button;

public class Controller {

    @FXML
    ReelPane reel;
    @FXML
    Button spin;

    public void initialize() {
        spin.setOnAction(event -> reel.spin());
    }
}

主要

package sample;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Main extends Application  {

    @Override
    public void start(Stage primaryStage) throws Exception {
         Parent root = 
       FXMLLoader.load(getClass().getResource("resources/fxml/slot.fxml"));
        primaryStage.setScene(new Scene(root, 400, 900));
        primaryStage.show();

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

但是 children 在按钮按下时没有移动 clicked.Can 有人告诉我哪里出了问题吗？

Answer 1

您 Timeline 的所有 KeyFrame 都同时安排。此外，if 语句甚至在您开始动画之前就已执行。

恕我直言，将所有元素放在 VBox 中并简单地反复将 translateY 从等于元素高度的负值更改为 0 并将最后一个元素移到前面循环结束。您可能希望将 clip 应用于 VBox 的父级，但要隐藏任何超出单个元素边界的内容。

@Override
public void start(Stage primaryStage) throws Exception {
    VBox pane = new VBox();
    Pane parent = new Pane(pane);
    parent.setPrefSize(50, 50);
    parent.setMinSize(Region.USE_PREF_SIZE, Region.USE_PREF_SIZE);
    parent.setMaxSize(Region.USE_PREF_SIZE, Region.USE_PREF_SIZE);
    Timeline timeline = new Timeline(new KeyFrame(Duration.ZERO, new KeyValue(pane.translateYProperty(), -50d)),
            new KeyFrame(Duration.seconds(2), evt -> {
                pane.getChildren().get(pane.getChildren().size() - 1).toBack();
            }, new KeyValue(pane.translateYProperty(), 0d)));
    timeline.setCycleCount(Animation.INDEFINITE);
    for (int i = 0; i < 6; i++) {
        Rectangle rect = new Rectangle(50, 50, Color.RED.interpolate(Color.BLACK, i / 6d));
        pane.getChildren().add(rect);
    }
    parent.setClip(new Rectangle(50, 50));
    timeline.play();
    Scene scene = new Scene(new StackPane(parent), 200, 200);
    primaryStage.setScene(scene);
    primaryStage.show();
}

Answer 2

制作所需动画的更简单的工具是 PauseTransition。
如果你不想在 fxml 中指定布局，你可以像你所做的那样覆盖 layoutChildren() 但是你需要禁用自动布局 (layoutChildren()) 以便动画可以改变职位：

import java.util.List;
import javafx.animation.PauseTransition;
import javafx.scene.Node;
import javafx.scene.layout.Pane;
import javafx.util.Duration;

public class ReelPane extends Pane {

    private List<Node> managed;
    private double dy, numberOfCchildren;
    private boolean isAnimating = false;
    private static final double PAUSE = 1;

    @Override
    protected void layoutChildren() {

        if(isAnimating) return;
        managed = getChildren();
        numberOfCchildren = managed.size();
        double y = 0;
        for (Node node : managed) {
            node.setLayoutX(0);
            node.setLayoutY(y);
            dy = Math.max(dy, node.getBoundsInLocal().getHeight()); //dy stores the highest
            y += dy;
        }
    }
    public void spin() {

        isAnimating = true;
        PauseTransition pause = new PauseTransition(Duration.seconds(PAUSE));
        pause.setOnFinished(event ->{
            for (Node node : managed) {

                if(node.getLayoutY()>= (numberOfCchildren -1) * dy){
                    node.setLayoutY(-dy);
                }
                node.setLayoutY(node.getLayoutY() +dy);
            }
            pause.play();
        });

        pause.play();
    }
}

考虑在旋转时禁用按钮：

import javafx.fxml.FXML;
import javafx.scene.control.Button;

public class Controller {

    @FXML
    ReelPane reel;
    @FXML
    Button spin;

    public void initialize() {

        spin.setOnAction(event -> {
            reel.spin();
            spin.setDisable(true);
        });
    }
}

要使代码 mre 这里是 slot.fxml 使用公开资源：

<?import javafx.scene.control.Button?>
<?import javafx.scene.image.*?>
<?import javafx.scene.layout.Pane?>
<?import fx_tests.ReelPane?>

<Pane 
      xmlns:fx="http://javafx.com/fxml/1"
      xmlns="http://javafx.com/javafx"
      fx:controller="fx_tests.sample.Controller">

    <ReelPane fx:id="reel">

        <ImageView fitHeight="100" fitWidth="100">
            <Image url="https://cdn3.iconfinder.com/data/icons/softwaredemo/PNG/128x128/Box_Green.png"/>
        </ImageView>

       <ImageView fitHeight="100" fitWidth="100" >
            <Image url="https://cdn3.iconfinder.com/data/icons/softwaredemo/PNG/128x128/Box_Red.png"/>
        </ImageView>

        <ImageView fitHeight="100" fitWidth="100">
            <Image url="https://cdn3.iconfinder.com/data/icons/softwaredemo/PNG/128x128/Box_Yellow.png"/>
        </ImageView>

        <ImageView fitHeight="100" fitWidth="100" >
           <Image url="https://cdn3.iconfinder.com/data/icons/softwaredemo/PNG/128x128/Box_Blue.png"/>
        </ImageView>

        <ImageView fitHeight="100" fitWidth="100">
            <Image url="https://cdn3.iconfinder.com/data/icons/softwaredemo/PNG/128x128/Box_Orange.png"/>
        </ImageView>

    </ReelPane>

    <Button fx:id="spin" text="SPIN" layoutX="20." layoutY="550.0" />

</Pane>

测试应用程序：

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Main extends Application  {

    @Override
    public void start(Stage primaryStage) throws Exception {
        Parent root =
        FXMLLoader.load(getClass().getResource("slot.fxml"));
        primaryStage.setScene(new Scene(root, 200, 600));
        primaryStage.show();

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

老虎机 TimeLine 动画不工作

Slot machine TimeLine animation not working

java

animation

timeline

javafx