Modify build files for Gradle 8, Java 17

build.gradle

@@ -1,66 +1,62 @@
 buildscript {
-    repositories {
-        mavenLocal()
-        mavenCentral()
-        gradlePluginPortal()
-        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
-        google()
-    }
-    dependencies {
-    }
+  repositories {
+    mavenCentral()
+    maven { url 'https://s01.oss.sonatype.org' }
+    gradlePluginPortal()
+    mavenLocal()
+    google()
+    maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
+    maven { url 'https://s01.oss.sonatype.org/content/repositories/snapshots/' }
+  }
+  dependencies {
+  }
 }
 
 allprojects {
-    apply plugin: "eclipse"
-    apply plugin: "idea"
-
-    version = '1.0'
-    ext {
-        appName = "darkly"
-        gdxVersion = '1.12.1'
-        roboVMVersion = '2.3.12'
-        box2DLightsVersion = '1.5'
-        ashleyVersion = '1.7.3'
-        aiVersion = '1.8.2'
-        gdxControllersVersion = '2.1.0'
-        jUnitVersion = '4.13'
-    }
+  apply plugin: 'idea'
 
-    repositories {
-        mavenLocal()
-        mavenCentral()
-        google()
-        gradlePluginPortal()
-        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
-        maven { url "https://oss.sonatype.org/content/repositories/releases/" }
+  // 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')
     }
+  }
+
+  repositories {
+    mavenLocal()
+    mavenCentral()
+    google()
+    gradlePluginPortal()
+    maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
+    maven { url "https://oss.sonatype.org/content/repositories/releases/" }
+  }
 }
 
-project(":desktop") {
-    apply plugin: "java-library"
-
+configure(subprojects) {
+  apply plugin: 'java-library'
 
-    dependencies {
-        implementation project(":core")
-        api "com.badlogicgames.gdx:gdx-backend-lwjgl3:$gdxVersion"
-        api "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
-
+  java {
+    toolchain {
+      languageVersion = JavaLanguageVersion.of(17)
     }
-}
+  }
 
-project(":core") {
-    apply plugin: "java-library"
-
-    test {
-        useJUnit()
-    }
-
-    dependencies {
-        api "com.badlogicgames.gdx:gdx:$gdxVersion"
-        testImplementation "junit:junit:$jUnitVersion"
-    }
+  compileJava {
+    options.incremental = true
+  }
 }
 
-tasks.eclipse.doLast {
-    delete ".project"
-}
+subprojects {
+  version = '$projectVersion'
+  ext.appName = 'darkly'
+  repositories {
+    mavenCentral()
+    maven { url 'https://s01.oss.sonatype.org' }
+    // You may want to remove the following line if you have errors downloading dependencies.
+    mavenLocal()
+    maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
+    maven { url 'https://s01.oss.sonatype.org/content/repositories/snapshots/' }
+    maven { url 'https://jitpack.io' }
+  }
+}

core/build.gradle

@@ -1,10 +1,12 @@
-sourceCompatibility = 1.8
 [compileJava, compileTestJava]*.options*.encoding = 'UTF-8'
 
-sourceSets.main.java.srcDirs = ["src/main/java"]
-sourceSets.test.java.srcDirs = ["src/test/java"]
+test {
+  useJUnit()
+}
 
+dependencies {
+  api "com.badlogicgames.ashley:ashley:$ashleyVersion"
+  api "com.badlogicgames.gdx:gdx:$gdxVersion"
 
-eclipse.project {
-    name = appName + "-core"
+  testImplementation "junit:junit:$jUnitVersion"
 }

desktop/build.gradle

@@ -1,39 +1,48 @@
-sourceCompatibility = 1.8
-sourceSets.main.java.srcDirs = [ "src/" ]
+buildscript {
+  repositories {
+    gradlePluginPortal()
+  }
+}
+
+dependencies {
+  implementation "com.badlogicgames.gdx:gdx-backend-lwjgl3:$gdxVersion"
+  implementation "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
+  implementation project(':core')
+}
+
+sourceSets.main.java.srcDirs = ["src/"]
 sourceSets.main.resources.srcDirs = ["../core/assets"]
 
 project.ext.mainClassName = "net.gpdev.darkly.desktop.DesktopLauncher"
 project.ext.assetsDir = new File("../core/assets")
 
 task run(dependsOn: classes, type: JavaExec) {
-    mainClass = project.mainClassName
-    classpath = sourceSets.main.runtimeClasspath
-    standardInput = System.in
-    workingDir = project.assetsDir
-    ignoreExitValue = true
+  mainClass = project.mainClassName
+  classpath = sourceSets.main.runtimeClasspath
+  standardInput = System.in
+  workingDir = project.assetsDir
+  ignoreExitValue = true
 }
 
 task debug(dependsOn: classes, type: JavaExec) {
-    mainClass = project.mainClassName
-    classpath = sourceSets.main.runtimeClasspath
-    standardInput = System.in
-    workingDir = project.assetsDir
-    ignoreExitValue = true
-    debug = true
+  mainClass = project.mainClassName
+  classpath = sourceSets.main.runtimeClasspath
+  standardInput = System.in
+  workingDir = project.assetsDir
+  ignoreExitValue = true
+  debug = true
 }
 
 task dist(type: Jar) {
-    manifest {
-        attributes 'Main-Class': project.mainClassName
-    }
-    dependsOn configurations.runtimeClasspath
-    from {
-        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
-    }
-    with jar
+  manifest {
+    attributes 'Main-Class': project.mainClassName
+  }
+  dependsOn configurations.runtimeClasspath
+  from {
+    configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
+  }
+  with jar
 }
 
 
 dist.dependsOn classes
-
-eclipse.project.name = appName + "-desktop"

gradle.properties

@@ -1,3 +1,7 @@
 org.gradle.daemon=true
-org.gradle.jvmargs=-Xms128m -Xmx1500m
+org.gradle.jvmargs=-Xms512M -Xmx1G -Dfile.encoding=UTF-8 -Dconsole.encoding=UTF-8
 org.gradle.configureondemand=false
+ashleyVersion=1.7.4
+gdxVersion=1.12.1
+jUnitVersion=4.13
+projectVersion=1.0.0