温馨提示:本文翻译自stackoverflow.com,查看原文请点击:java - Slot machine TimeLine animation not working

java - 老虎机时间线动画不起作用

发布于 2020-04-03 23:27:01

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,可垂直添加子项。单击旋转按钮时,子项必须移动,而最后一个子项到达边界时,子项必须将其位置移动到第一个子项上方。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>

控制者

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);
    }
}

但是单击按钮时孩子们没有动。有人可以告诉我出了什么问题吗?

查看更多

提问者
Joseph Jose
被浏览
47
c0der 2020-02-04 02:41

用于所需动画的更简单的工具是PauseTransition
如果您不想在fxml中指定布局,则可以像以前那样覆盖layoutChildren(),但是您需要禁用自动布局(layoutChildren()),以便动画可以更改位置:

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);
        });
    }
}

为了使代码MRE这里是slot.fxml使用公开可用的资源:

<?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>

一个测试应用程序:

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);
    }
}

在此处输入图片说明

发布
问题

分享
好友

手机
浏览

扫码手机浏览