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libgdx实现淡入淡出过渡

libgdx实现淡入淡出过渡，环境jdk17+、libgdx 1.12.02023年11月1日11:02:50最新

依赖

<properties><maven.compiler.source>17</maven.compiler.source><maven.compiler.target>17</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><gdx.version>1.12.0</gdx.version></properties><dependencies><!-- https://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx --><dependency><groupId>com.badlogicgames.gdx</groupId><artifactId>gdx</artifactId><version>${gdx.version}</version></dependency><!-- https://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx-backend-lwjgl3 --><dependency><groupId>com.badlogicgames.gdx</groupId><artifactId>gdx-backend-lwjgl3</artifactId><version>${gdx.version}</version></dependency><!-- https://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx-platform --><dependency><groupId>com.badlogicgames.gdx</groupId><artifactId>gdx-platform</artifactId><version>${gdx.version}</version><classifier>natives-desktop</classifier></dependency><!-- https://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx-freetype --><dependency><groupId>com.badlogicgames.gdx</groupId><artifactId>gdx-freetype</artifactId><version>${gdx.version}</version></dependency><!-- https://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx-freetype-platform --><dependency><groupId>com.badlogicgames.gdx</groupId><artifactId>gdx-freetype-platform</artifactId><version>${gdx.version}</version><classifier>natives-desktop</classifier></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.13.2</version></dependency><!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>2.0.9</version></dependency><!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-simple --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-simple</artifactId><version>2.0.9</version></dependency><!-- https://mvnrepository.com/artifact/org.projectlombok/lombok --><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.30</version><scope>provided</scope></dependency></dependencies><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.8.1</version><configuration><source>17</source><target>17</target><!-- 编译后保持方法形参名称不变 --><!--<compilerArgs><arg>-parameters</arg></compilerArgs>--></configuration></plugin></plugins></build><repositories><repository><id>tencent</id><name>tencent</name><layout>default</layout><url>http://mirrors.cloud.tencent.com/nexus/repository/maven-public/</url><snapshots><enabled>false</enabled></snapshots><releases><enabled>true</enabled></releases></repository><repository><id>nexus</id><name>Nexus</name><layout>default</layout><url>https://s01.oss.sonatype.org/content/repositories/snapshots</url><snapshots><enabled>true</enabled></snapshots><releases><enabled>true</enabled></releases></repository><repository><id>aliyunmaven</id><url>https://maven.aliyun.com/repository/public</url><releases><enabled>true</enabled></releases><snapshots><enabled>false</enabled></snapshots></repository></repositories>

实现

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.InputListener;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.actions.Actions;
import com.badlogic.gdx.scenes.scene2d.actions.AlphaAction;
import com.badlogic.gdx.scenes.scene2d.ui.Image;
import com.badlogic.gdx.utils.ScreenUtils;
import org.junit.Test;/*** @author lingkang* created by 2023/11/1*/
public class TestFade extends ApplicationAdapter {@Testpublic void test() {Lwjgl3ApplicationConfiguration config = new Lwjgl3ApplicationConfiguration();config.setForegroundFPS(30);config.setTitle("yzcy");config.setWindowedMode(800, 600);new Lwjgl3Application(this, config);}Stage stage;Image img;Texture texture;long inTime = 0l;@Overridepublic void create() {stage = new Stage();texture = new Texture(Gdx.files.internal("badlogic.jpg"));img = new Image(texture);img.setSize(texture.getWidth(), texture.getHeight());img.setOrigin(img.getWidth() / 2, img.getHeight() / 2);stage.addActor(img);float dur = 0.7f;//  Actions.moveBy 移动   Actions.scaleBy 大小    Actions.rotate 旋转// 淡入AlphaAction fadeIn = Actions.fadeIn(dur);img.addAction(fadeIn);// 点击图片，淡出AlphaAction fadeOut = Actions.fadeOut(dur);img.addListener(new InputListener() {@Overridepublic boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {img.clearActions();img.addAction(fadeOut);return true;}});Gdx.input.setInputProcessor(stage);}@Overridepublic void render() {ScreenUtils.clear(Color.WHITE);stage.act();stage.draw();}@Overridepublic void dispose() {stage.dispose();texture.dispose();}
}

效果