first commit

.editorconfig

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+# https://editorconfig.org
+root = true
+
+[*]
+indent_style = space
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{java,scala,groovy,kt,kts}]
+indent_size = 4
+
+[*.gradle]
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false

.gitattributes

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+* text=auto eol=lf
+*.bat text=auto eol=crlf

.gitignore

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+## Gradle:
+.gradle/
+gradle-app.setting
+/build/
+/android/build/
+/core/build/
+/lwjgl2/build/
+/lwjgl3/build/
+/html/build/
+/teavm/build/
+/ios/build/
+/ios-moe/build/
+/headless/build/
+/server/build/
+/shared/build/
+
+## Java:
+*.class
+*.war
+*.ear
+hs_err_pid*
+.attach_pid*
+
+## Android:
+/android/libs/armeabi-v7a/
+/android/libs/arm64-v8a/
+/android/libs/x86/
+/android/libs/x86_64/
+/android/gen/
+/android/out/
+local.properties
+com_crashlytics_export_strings.xml
+
+## Robovm:
+/ios/robovm-build/
+
+## iOS:
+/ios/xcode/*.xcodeproj/*
+!/ios/xcode/*.xcodeproj/xcshareddata
+!/ios/xcode/*.xcodeproj/project.pbxproj
+/ios/xcode/native/
+/ios/IOSLauncher.app
+/ios/IOSLauncher.app.dSYM
+
+## GWT:
+/html/war/
+/html/gwt-unitCache/
+.apt_generated/
+/html/war/WEB-INF/deploy/
+/html/war/WEB-INF/classes/
+.gwt/
+gwt-unitCache/
+www-test/
+.gwt-tmp/
+
+## TeaVM:
+# Not sure yet...
+
+## IntelliJ, Android Studio:
+.idea/
+*.ipr
+*.iws
+*.iml
+
+## Eclipse:
+.classpath
+.project
+.metadata/
+/android/bin/
+/core/bin/
+/lwjgl2/bin/
+/lwjgl3/bin/
+/html/bin/
+/teavm/bin/
+/ios/bin/
+/ios-moe/bin/
+/headless/bin/
+/server/bin/
+/shared/bin/
+*.tmp
+*.bak
+*.swp
+*~.nib
+.settings/
+.loadpath
+.externalToolBuilders/
+*.launch
+
+
+## NetBeans:
+
+/nbproject/private/
+/android/nbproject/private/
+/core/nbproject/private/
+/lwjgl2/nbproject/private/
+/lwjgl3/nbproject/private/
+/html/nbproject/private/
+/teavm/nbproject/private/
+/ios/nbproject/private/
+/ios-moe/nbproject/private/
+/headless/nbproject/private/
+/server/nbproject/private/
+/shared/nbproject/private/
+
+/nbbuild/
+/android/nbbuild/
+/core/nbbuild/
+/lwjgl2/nbbuild/
+/lwjgl3/nbbuild/
+/html/nbbuild/
+/teavm/nbbuild/
+/ios/nbbuild/
+/ios-moe/nbbuild/
+/headless/nbbuild/
+/server/nbbuild/
+/shared/nbbuild/
+
+/dist/
+/android/dist/
+/core/dist/
+/lwjgl2/dist/
+/lwjgl3/dist/
+/html/dist/
+/teavm/dist/
+/ios/dist/
+/ios-moe/dist/
+/headless/dist/
+/server/dist/
+/shared/dist/
+
+/nbdist/
+/android/nbdist/
+/core/nbdist/
+/lwjgl2/nbdist/
+/lwjgl3/nbdist/
+/html/nbdist/
+/teavm/nbdist/
+/ios/nbdist/
+/ios-moe/nbdist/
+/headless/nbdist/
+/server/nbdist/
+/shared/nbdist/
+
+nbactions.xml
+nb-configuration.xml
+
+## OS-Specific:
+.DS_Store
+Thumbs.db
+
+## Miscellaneous:
+*~
+*.*#
+*#*#
+/.kotlin/
+/assets/assets.txt
+
+## Special cases:
+
+## There is a resource-config.json file generated by nativeimage.gradle if you use Graal Native Image.
+## Some usage may need extra resource configuration in a different file with the same name.
+## You could also add that configuration to the text in nativeimage.gradle .
+## You should delete or comment out the next line if you have configuration in a different resource-config.json .
+**/resource-config.json

README.md

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+# OwnPlanetsWallpaper in libgdx
+
+
+orignal wallpaper is at 
+https://github.com/ELY3M/OwnPlanetsWallpaper
+
+
+Here is video of the wallpaper in action   
+https://www.youtube.com/watch?v=-fdXivt3J_k
+
+
+==================================================================
+
+
+A [libGDX](https://libgdx.com/) project generated with [gdx-liftoff](https://github.com/libgdx/gdx-liftoff).
+
+This project was generated with a template that includes Kotlin application launchers and an empty `ApplicationAdapter` implemented in Kotlin.
+
+## Platforms
+
+- `core`: Main module with the application logic shared by all platforms.
+- `lwjgl3`: Primary desktop platform using LWJGL3; was called 'desktop' in older docs.
+- `android`: Android mobile platform. Needs Android SDK.
+- `teavm`: Web backend that supports most JVM languages.
+- `ios-moe`: iOS mobile backend using Multi-OS Engine.
+
+## Gradle
+
+This project uses [Gradle](https://gradle.org/) to manage dependencies.
+The Gradle wrapper was included, so you can run Gradle tasks using `gradlew.bat` or `./gradlew` commands.
+Useful Gradle tasks and flags:
+
+- `--continue`: when using this flag, errors will not stop the tasks from running.
+- `--daemon`: thanks to this flag, Gradle daemon will be used to run chosen tasks.
+- `--offline`: when using this flag, cached dependency archives will be used.
+- `--refresh-dependencies`: this flag forces validation of all dependencies. Useful for snapshot versions.
+- `android:lint`: performs Android project validation.
+- `build`: builds sources and archives of every project.
+- `cleanEclipse`: removes Eclipse project data.
+- `cleanIdea`: removes IntelliJ project data.
+- `clean`: removes `build` folders, which store compiled classes and built archives.
+- `eclipse`: generates Eclipse project data.
+- `idea`: generates IntelliJ project data.
+- `lwjgl3:jar`: builds application's runnable jar, which can be found at `lwjgl3/build/libs`.
+- `lwjgl3:run`: starts the application.
+- `teavm:build`: builds the JavaScript application into the build/dist/webapp folder.
+- `teavm:run`: serves the JavaScript application at http://localhost:8080 via a local Jetty server.
+- `test`: runs unit tests (if any).
+
+Note that most tasks that are not specific to a single project can be run with `name:` prefix, where the `name` should be replaced with the ID of a specific project.
+For example, `core:clean` removes `build` folder only from the `core` project.

android/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+  <uses-feature android:glEsVersion="0x00020000" android:required="true"/>
+  <uses-feature android:name="android.hardware.type.pc" android:required="false" />
+  <application
+      android:allowBackup="true"
+      android:fullBackupContent="true"
+      android:icon="@drawable/element2"
+      android:isGame="true"
+      android:appCategory="game"
+      android:label="@string/app_name"
+      tools:ignore="UnusedAttribute">
+
+      <service
+          android:label="@string/app_name"
+          android:name=".WallpaperService"
+          android:enabled="true"
+          android:permission="android.permission.BIND_WALLPAPER"
+          android:exported="true">
+
+          <intent-filter>
+              <action android:name="android.service.wallpaper.WallpaperService"/>
+          </intent-filter>
+
+          <meta-data android:name="android.service.wallpaper" android:resource="@xml/wallpaper"/>
+      </service>
+
+      <service android:name="own.planetslivewallpaper.Screensaver"
+               android:label="@string/app_name"
+               android:icon="@drawable/element2"
+               android:exported="true"
+               android:permission="android.permission.BIND_DREAM_SERVICE">
+          <intent-filter>
+              <action android:name="android.service.dreams.DreamService" />
+              <category android:name="android.intent.category.DEFAULT" />
+          </intent-filter>
+          <meta-data android:name="android.service.dream"
+                     android:resource="@xml/screensaver" />
+      </service>
+
+      <activity
+        android:name="own.planetslivewallpaper.AndroidLauncher"
+        android:screenOrientation="fullSensor"
+        android:configChanges="keyboard|keyboardHidden|navigation|orientation|screenSize|screenLayout"
+        android:exported="true">
+        <intent-filter>
+        <action android:name="android.intent.action.MAIN"/>
+        <category android:name="android.intent.category.LAUNCHER"/>
+      </intent-filter>
+    </activity>
+  </application>
+
+</manifest>

android/build.gradle

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+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+buildscript {
+  repositories {
+    mavenCentral()
+    google()
+  }
+}
+apply plugin: 'com.android.application'
+
+android {
+  namespace = "own.planetslivewallpaper"
+  compileSdk 37
+  sourceSets {
+    main {
+      manifest.srcFile 'AndroidManifest.xml'
+      java.setSrcDirs(['src/main/java', 'src/main/kotlin'])
+      aidl.setSrcDirs(['src/main/java', 'src/main/kotlin'])
+      renderscript.setSrcDirs(['src/main/java', 'src/main/kotlin'])
+      res.setSrcDirs(['res'])
+      assets.setSrcDirs(['../assets'])
+      jniLibs.setSrcDirs(['libs'])
+    }
+  }
+  packagingOptions {
+		resources {
+			excludes += ['META-INF/robovm/ios/robovm.xml', 'META-INF/DEPENDENCIES.txt', 'META-INF/DEPENDENCIES',
+                   'META-INF/dependencies.txt', '**/*.gwt.xml']
+			pickFirsts += ['META-INF/LICENSE.txt', 'META-INF/LICENSE', 'META-INF/license.txt', 'META-INF/LGPL2.1',
+                     'META-INF/NOTICE.txt', 'META-INF/NOTICE', 'META-INF/notice.txt']
+		}
+  }
+  defaultConfig {
+    applicationId 'own.planetslivewallpaper'
+    minSdkVersion 21
+    targetSdkVersion 37
+    versionCode 1
+    versionName "1.0"
+  }
+  compileOptions {
+    sourceCompatibility "21"
+    targetCompatibility "21"
+    coreLibraryDesugaringEnabled = true
+  }
+  buildTypes {
+    release {
+      minifyEnabled true
+      proguardFiles getDefaultProguardFile("proguard-android-optimize.txt"), 'proguard-rules.pro'
+    }
+  }
+
+  kotlin.compilerOptions.jvmTarget.set(JvmTarget.JVM_21)
+
+}
+
+repositories {
+  // needed for AAPT2, may be needed for other tools
+  google()
+}
+
+configurations { natives }
+
+dependencies {
+  coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.1.5'
+  implementation "com.badlogicgames.gdx:gdx-backend-android:$gdxVersion"
+  implementation project(':core')
+
+  natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-arm64-v8a"
+  natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi-v7a"
+  natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86"
+  natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86_64"
+
+}
+
+// Called every time gradle gets executed, takes the native dependencies of
+// the natives configuration, and extracts them to the proper libs/ folders
+// so they get packed with the APK.
+tasks.register('copyAndroidNatives') {
+  doFirst {
+    file("libs/armeabi-v7a/").mkdirs()
+    file("libs/arm64-v8a/").mkdirs()
+    file("libs/x86_64/").mkdirs()
+    file("libs/x86/").mkdirs()
+
+    configurations.natives.copy().files.each { jar ->
+      def outputDir = null
+      if(jar.name.endsWith("natives-armeabi-v7a.jar")) outputDir = file("libs/armeabi-v7a")
+      if(jar.name.endsWith("natives-arm64-v8a.jar")) outputDir = file("libs/arm64-v8a")
+      if(jar.name.endsWith("natives-x86_64.jar")) outputDir = file("libs/x86_64")
+      if(jar.name.endsWith("natives-x86.jar")) outputDir = file("libs/x86")
+      if(outputDir != null) {
+        copy {
+          from zipTree(jar)
+          into outputDir
+          include "*.so"
+        }
+      }
+    }
+  }
+}
+
+tasks.matching { it.name.contains("merge") && it.name.contains("JniLibFolders") }.configureEach { packageTask ->
+  packageTask.dependsOn 'copyAndroidNatives'
+}
+
+tasks.register('run', Exec) {
+  def path
+  def localProperties = project.file("../local.properties")
+  if (localProperties.exists()) {
+    Properties properties = new Properties()
+    localProperties.withInputStream { instr ->
+      properties.load(instr)
+    }
+    def sdkDir = properties.getProperty('sdk.dir')
+    if (sdkDir) {
+      path = sdkDir
+    } else {
+      path = "$System.env.ANDROID_SDK_ROOT"
+    }
+  } else {
+    path = "$System.env.ANDROID_SDK_ROOT"
+  }
+
+  def adb = path + "/platform-tools/adb"
+  commandLine "$adb", 'shell', 'am', 'start', '-n', 'own.planetslivewallpaper/own.planetslivewallpaper.android.AndroidLauncher'
+}
+
+eclipse.project.name = appName + "-android"

android/proguard-rules.pro

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+# To enable ProGuard in your project, edit project.properties
+# to define the proguard.config property as described in that file.
+#
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in ${sdk.dir}/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the ProGuard
+# include property in project.properties.
+#
+# For more details, see
+#   https://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+-verbose
+
+-dontwarn android.support.**
+-dontwarn com.badlogic.gdx.backends.android.AndroidFragmentApplication
+
+# Needed by the gdx-controllers official extension.
+-keep class com.badlogic.gdx.controllers.android.AndroidControllers
+
+# Needed by the Box2D official extension.
+-keepclassmembers class com.badlogic.gdx.physics.box2d.World {
+   boolean contactFilter(long, long);
+   boolean getUseDefaultContactFilter();
+   void    beginContact(long);
+   void    endContact(long);
+   void    preSolve(long, long);
+   void    postSolve(long, long);
+   boolean reportFixture(long);
+   float   reportRayFixture(long, float, float, float, float, float);
+}
+
+# You will need the next three lines if you use scene2d for UI or gameplay.
+# If you don't use scene2d at all, you can remove or comment out the next line:
+-keep public class com.badlogic.gdx.scenes.scene2d.** { *; }
+# You will need the next two lines if you use BitmapFont or any scene2d.ui text:
+-keep public class com.badlogic.gdx.graphics.g2d.BitmapFont { *; }
+# You will probably need this line in most cases:
+-keep public class com.badlogic.gdx.graphics.Color { *; }
+
+# These two lines are used with mapping files; see https://developer.android.com/build/shrink-code#retracing
+-keepattributes LineNumberTable,SourceFile
+-renamesourcefileattribute SourceFile

android/project.properties

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+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system edit
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+#
+# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
+#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-rules.pro
+
+# Project target.
+target=android-21

android/res/values/strings.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <string name="app_name">Own Planets Wallpaper - libgdx</string>
+  <string name="description">My own aliens and planets live wallpaper :) this wallpaper uses  libgdx</string>
+</resources>

android/res/xml/screensaver.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<dream xmlns:android="http://schemas.android.com/apk/res/android" />

android/res/xml/wallpaper.xml

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+<wallpaper
+    xmlns:android="http://schemas.android.com/apk/res/android"
+
+    android:thumbnail="@drawable/element2"
+    android:description="@string/description"
+/>

android/src/main/kotlin/own/planetslivewallpaper/AndroidLauncher.kt

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+package own.planetslivewallpaper
+
+import android.os.Bundle
+import com.badlogic.gdx.backends.android.AndroidApplication
+import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration
+
+/** Launches the Android application. */
+class AndroidLauncher : AndroidApplication() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        initialize(Main(), AndroidApplicationConfiguration().apply {
+            // Configure your application here.
+            useImmersiveMode = true // Recommended, but not required.
+        })
+    }
+}

android/src/main/kotlin/own/planetslivewallpaper/ScreenSaver.kt

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+package own.planetslivewallpaper
+
+/*
+import com.badlogic.gdx.backends.android.AndroidApplicationBase
+import com.badlogic.gdx.backends.android.AndroidApplication
+import android.service.dreams.DreamService
+import com.badlogic.gdx.ApplicationListener
+import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration
+import com.badlogic.gdx.backends.android.AndroidGraphics
+import own.planetslivewallpaper.Main
+
+
+class Screensaver : DreamService(), ApplicationListener {
+
+    private lateinit var graphics: AndroidGraphics
+    private lateinit var listener: ApplicationListener
+    private val config = AndroidApplicationConfiguration()
+
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+
+        // Enable user interaction if your screensaver is interactive
+        isInteractive = false
+        // Request fullscreen window layout
+        isFullscreen = true
+
+        // Initialize libGDX configuration
+        config.useGL30 = false
+
+        // Initialize the graphics surface manually
+       ///graphics = AndroidGraphics(, config, config.resolutionStrategy)
+
+        // Bind the service life cycle into the view hierarchy
+        //setContentView(graphics.view)
+
+        //initialize(Main(), config)
+        val config = AndroidApplicationConfiguration()
+        listener = Main()
+
+        // Manually initialize the view instead of calling initialize()
+        val view = initializeForView(listener, config)
+        setContentView(view)
+
+    }
+
+    override fun onDreamingStarted() {
+        super.onDreamingStarted()
+        // Resume game loops or engines here if needed
+    }
+
+    override fun onDreamingStopped() {
+        super.onDreamingStopped()
+        // Pause resource allocations safely
+    }
+
+    override fun onDetachedFromWindow() {
+        super.onDetachedFromWindow()
+        // Clear GL references and contexts safely
+    }
+
+
+    // --- libGDX ApplicationListener Lifecycle Methods ---
+    override fun create() {
+        //val config = AndroidApplicationConfiguration()
+        //initialize(Main(), config)
+        // Initialize shaders, textures, or cameras here
+    }
+
+    override fun resize(width: Int, height: Int) {}
+
+    override fun render() {
+        // Clear screen and draw your canvas
+        // Example: Gdx.gl.glClearColor(0f, 0f, 0f, 1f)
+    }
+
+    override fun pause() {}
+
+    override fun resume() {}
+
+    override fun dispose() {}
+
+}
+*/
+
+
+import android.service.dreams.DreamService
+import android.view.View
+import com.badlogic.gdx.ApplicationListener
+import com.badlogic.gdx.backends.android.AndroidApplication
+import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration
+import own.planetslivewallpaper.Main
+
+class Screensaver : DreamService() {
+
+    private lateinit var Listener: ApplicationListener
+
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+
+        isInteractive = false
+        isFullscreen = true
+
+        val config = AndroidApplicationConfiguration()
+        Listener = Main() // Replace with your main game class
+
+        // Create an anonymous AndroidApplication delegate to call initializeForView
+        val appDelegate = object : AndroidApplication() {
+            fun createGdxView(): View {
+                // Now initializeForView can be successfully called here
+                return initializeForView(Listener, config)
+            }
+        }
+
+        // Fetch the generated surface view and apply it to the DreamService
+        val gdxView = appDelegate.createGdxView()
+        setContentView(gdxView)
+    }
+}
+

android/src/main/kotlin/own/planetslivewallpaper/WallpaperService.kt

@@ -0,0 +1,88 @@
+package own.planetslivewallpaper
+
+import android.util.Log
+import com.badlogic.gdx.ApplicationListener
+import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration
+import com.badlogic.gdx.backends.android.AndroidLiveWallpaperService
+
+class WallpaperService : AndroidLiveWallpaperService() {
+
+   companion object {
+      private const val TAG = "WallpaperService"
+   }
+
+   override fun onCreateApplication() {
+      super.onCreateApplication()
+
+      Log.i( TAG, "onCreateApplication()" )
+
+      val config = AndroidApplicationConfiguration()
+      val listener: ApplicationListener = Main()
+
+      initialize(listener, config)
+
+   }
+
+
+/*
+   class MyLiveWallpaperListener : AndroidWallpaperListener, ApplicationListener {
+      private var batch: SpriteBatch? = null
+      private var img: Texture? = null
+
+      override fun offsetChange(
+         xOffset: Float,
+         yOffset: Float,
+         xOffsetStep: Float,
+         yOffsetStep: Float,
+         xPixelOffset: Int,
+         yPixelOffset: Int
+      ) {
+         Log.i(TAG,"AndroidWallpaperListener: offsetChange(xOffset:$xOffset yOffset:$yOffset xOffsetSteep:$xOffsetStep yOffsetStep:$yOffsetStep xPixelOffset:$xPixelOffset yPixelOffset:$yPixelOffset)")
+      }
+
+      override fun previewStateChange(isPreview: Boolean) {
+         Log.i(TAG, "AndroidWallpaperListener: previewStateChange(isPreview:$isPreview)")
+      }
+
+      override fun iconDropped(x: Int, y: Int) {
+         Log.i(TAG, "AndroidWallpaperListener:  iconDropped ($x, $y)")
+      }
+
+      override fun create() {
+         Log.i(TAG, "ApplicationListener: create")
+
+         batch = SpriteBatch()
+         img = Texture("background.png")
+      }
+
+      override fun resize(width: Int, height: Int) {
+         Log.i(TAG, "ApplicationListener: resize")
+      }
+
+      override fun render() {
+         Log.i(TAG, "ApplicationListener: render")
+
+         ScreenUtils.clear(0f, 0f, 1f, 1f)
+         batch!!.begin()
+         batch!!.draw(img, 0f, 0f)
+         batch!!.end()
+
+
+
+      }
+
+      override fun pause() {
+         Log.i(TAG, "ApplicationListener: pause")
+      }
+
+      override fun resume() {
+         Log.i(TAG, "ApplicationListener: resume")
+      }
+
+      override fun dispose() {
+         Log.i(TAG, "ApplicationListener: dispose")
+      }
+   }
+*/
+
+}

build.gradle

@@ -0,0 +1,78 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+buildscript {
+  repositories {
+    mavenCentral()
+    gradlePluginPortal()
+    mavenLocal()
+    google()
+    maven { url = 'https://central.sonatype.com/repository/maven-snapshots/' }
+  }
+  dependencies {
+    classpath "com.android.tools.build:gradle:9.3.2"
+    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
+
+  }
+}
+
+allprojects {
+  apply plugin: 'eclipse'
+  apply plugin: 'idea'
+
+  // This allows you to "Build and run using IntelliJ IDEA", an option in IDEA's Settings.
+  idea {
+    module {
+      outputDir = file('build/classes/java/main')
+      testOutputDir = file('build/classes/java/test')
+    }
+  }
+}
+
+configure(subprojects - project(':android')) {
+  apply plugin: 'java-library'
+  apply plugin: 'kotlin'
+  java.sourceCompatibility = 21
+  java.targetCompatibility = 21
+
+  // From https://lyze.dev/2021/04/29/libGDX-Internal-Assets-List/
+  // The article can be helpful when using assets.txt in your project.
+  tasks.register('generateAssetList') {
+    inputs.dir("${project.rootDir}/assets/")
+    // projectFolder/assets
+    File assetsFolder = new File("${project.rootDir}/assets/")
+    // projectFolder/assets/assets.txt
+    File assetsFile = new File(assetsFolder, "assets.txt")
+    // delete that file in case we've already created it
+    assetsFile.delete()
+
+    // iterate through all files inside that folder
+    // convert it to a relative path
+    // and append it to the file assets.txt
+    fileTree(assetsFolder).collect { assetsFolder.relativePath(it) }.sort().each {
+      assetsFile.append(it + "\n")
+    }
+  }
+  processResources.dependsOn 'generateAssetList'
+
+  compileJava {
+    options.incremental = true
+  }
+  compileKotlin.compilerOptions.jvmTarget.set(JvmTarget.JVM_21)
+  compileTestKotlin.compilerOptions.jvmTarget.set(JvmTarget.JVM_21)
+
+}
+
+subprojects {
+  version = "$projectVersion"
+  ext.appName = 'OwnPlanetsLiveWallpaper'
+  repositories {
+    mavenCentral()
+    // You may want to remove the following line if you have errors downloading dependencies.
+    mavenLocal()
+    maven { url = 'https://central.sonatype.com/repository/maven-snapshots/' }
+    maven { url = 'https://jitpack.io' }
+    maven { url = 'https://teavm.org/maven/repository/' }
+  }
+}
+
+eclipse.project.name = 'OwnPlanetsLiveWallpaper' + '-parent'

core/build.gradle

@@ -0,0 +1,15 @@
+[compileJava, compileTestJava]*.options*.encoding = 'UTF-8'
+eclipse.project.name = appName + '-core'
+
+dependencies {
+  api "com.badlogicgames.gdx:gdx:$gdxVersion"
+  api "org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion"
+
+  if(enableGraalNative == 'true') {
+    implementation "io.github.berstanio:gdx-svmhelper-annotations:$graalHelperVersion"
+  }
+}
+
+jar {
+  duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+}