Update to Gradle 8.10, really emphasize USE 17.

Guide.md

@@ -86,8 +86,8 @@ used to avoid vulnerable log4j versions, now that Gradle has updated and conside
               libGDX 1.10.0 to improve behavior on iOS, and gdx-liftoff may need to apply some changes to template code
               for iOS projects to work more cleanly with libGDX 1.10.0.
         - Android should only be checked if you've set up your computer for Android development. Since gdx-liftoff uses
-          Gradle 8.5, having an Android project present shouldn't interfere with other platforms or IDE integration, as
-          long as your IDE supports Gradle 8.5 (current Android Studio and IDEA both support it).
+          Gradle 8.10, having an Android project present shouldn't interfere with other platforms or IDE integration, as
+          long as your IDE supports Gradle 8.10 (current Android Studio and IDEA both support it).
             - **You must set your project's JDK to a version 17 or higher** to use Android, due to a new requirement of the
               Android Gradle Plugin used by Android Studio and IDEA. JDK 17 is the most versatile option right now, because
               it can be used with gdx-setup projects and Android projects. JDK 17 or 18 will work. You could have to

README.md

@@ -19,10 +19,11 @@ To generate a project, [download](https://github.com/libgdx/gdx-liftoff/releases
 java -jar gdx-liftoff-VERSION.jar
 ```
 
-**You must build with Java 17 or newer!** Android tools now require your installed JDK to be version 17 or higher.
-Even if you target only desktop, the included [Construo](https://github.com/fourlastor-alexandria/construo) plugin needs 
+**You must build with Java 17 or newer!** Gradle's current version, as well as current Android tools, now require your
+installed JDK to be version 17 or higher. Regardless of what platforms you target, Gradle 8.10 needs 
 a JDK with a version at least 17! You can still target other releases, as low as 8 typically, while building with any of
-the JDK versions 17 and up. All stable target releases of Java from 8 to 22 work here now.
+the JDK versions 17 and up. All stable target releases of Java from 8 to 23 work here now. We use Gradle 8.10 because it
+will work out-of-the-box with Java 23 even before it has a final release (which will be soon, if not already complete).
 
 If you have any trouble, you can try our [🐛Troubleshooting Guide🐛](Troubleshooting.md).
 
@@ -75,10 +76,13 @@ Gdx-Liftoff is a relatively straightforward GUI application.
  - Click Generate, and let the magic happen.
 
 After that you can open the project in the path you specified, or open it more quickly in IDEA if it's installed how
-Liftoff can see it (using [JetBrains Toolbox](https://www.jetbrains.com/toolbox-app/), most likely).
+Liftoff can see it (using [JetBrains Toolbox](https://www.jetbrains.com/toolbox-app/), most likely, though a manually installed IDEA can also be used).
 
-If you want to use Kotlin, a Kotlin template is recommended (such as `Kotlin Logo`). The KTX libraries are all available
-as third-party extensions; these aren't required for Kotlin projects, but they can be helpful.
+If you want to use Kotlin, a Kotlin template is recommended (such as `Kotlin Logo`); these mention that they use "Kotlin
+launchers" in their descriptions. The KTX libraries are all available as third-party extensions; these aren't required
+for Kotlin projects, but they can be helpful. KTX and other Kotlin-based libraries need Kotlin enabled. Currently,
+projects generated here default to using Kotlin 1.9.25, and not the newer, incompatible 2.x line. When more libraries
+have had time to update to 2.x compatibility, Liftoff will update as well.
 
 Some things are structured differently in Liftoff projects, compared to gdx-setup projects. Where gdx-setup puts almost
 all configuration in `/build.gradle` (in the project root), including for subprojects like `android` or `html`, Liftoff

Troubleshooting.md

@@ -5,6 +5,15 @@ followed by any ways that help resolve those problems.
 
 This guide is brand new, and will be added to as new solutions are found for problems.
 
+### First things first, make sure you're using Java 17 or newer.
+
+Seriously. Do this first. Many parts of a Gradle project will fail now if you are using too old of a JDK.
+You can check this version in IntelliJ IDEA under File -> Project Structure. If you don't have any
+JDKs that are version 17 or newer, go into SDKs in the sidebar, and click the `+` at the very top of the window. You can
+then download a JDK, such as `Version: 17`, `Vendor: Eclipse Temurin`, which is a solid choice. You can also download a
+GraalVM JDK if you want in this way, which enables using LWJGL3's native-image configuration much later on. You can have
+many JDKs installed if you want, of various versions.
+
 ### Some older docs mention Gradle tasks using a "desktop" module.
 
 This would include docs telling you to run a Gradle task like `desktop:run` or `desktop:dist`.
@@ -59,6 +68,8 @@ Well, install Java 17 or higher and try again. You may need to set your JDK in y
 and then `Download JDK`. Android Studio doesn't provide as many ways to configure the JDK because it should include one
 that works with the latest Android tools already.
 
+I feel like I covered this one already...
+
 ### A Kotlin project that contains an Android module gives the message `jvm target compatibility should be set to the same Java version.`
 
 This should be fixed in 1.12.0.1 by using toolchains, or in 1.12.1.7 using Kotlin's `jvmTarget` option; if that doesn't
@@ -149,7 +160,9 @@ likely grow.
 
 Liftoff 1.12.1.6 is the first to use GWT 2.11.0, which is almost entirely backwards-compatible... at an API level,
 at least. It has different dependencies for `gwt-user`, both because the version is newer, and that JAR is provided in
-a different "group" -- `org.gwtproject:gwt-user:2.11.0` instead of the older `com.google.gwt:gwt-user:2.8.2`.
+a different "group" -- `org.gwtproject:gwt-user:2.11.0` instead of the older `com.google.gwt:gwt-user:2.8.2`. This
+shouldn't be a problem in the libGDX release after 1.12.1, since it should use GWT 2.11.0, but the fixes here won't
+cause problems if they remain in a project updated to a newer libGDX version.
 
 Before I start with the general solution, there's often a much easier one: for libraries that Liftoff has in its
 third-party extensions, any that need special treatment for GWT should already have that taken care of. The rest of this
@@ -221,7 +234,7 @@ The iOS backend using Multi-OS Engine (MOE) seems to have some incompatibility w
 goes back almost to 8.3. I'm not exactly clear on the nature of the incompatibility, other than it's supposed to be
 fixed in the next major Gradle release (8.8 or 9.0). Because that won't release for some time, MOE has been temporarily
 removed from Liftoff 1.12.1.7; it won't work in earlier versions unless you go back to 1.12.0.4 or downgrade Gradle
-yourself to 8.3. This isn't an outcome I'm happy with, but it should get resolved eventually. 
+yourself to 8.3. This isn't an outcome I'm happy with, but it should get resolved eventually.
 
 ### In 1.12.1.8 and later, the default icons for Android projects look terrible!
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

src/main/java/gdx/liftoff/Listing.java

@@ -30,7 +30,7 @@ private Listing() {
         new GWT(),
         new Headless(),
         new IOS(),
-        new IOSMOE(),
+//        new IOSMOE(),
         new Lwjgl2(),
         new Lwjgl3(),
         new Server(),

src/main/java/gdx/liftoff/ui/dialogs/PlatformsDialog.java

@@ -108,7 +108,7 @@ private void populate(Table contentTable) {
         table.defaults().left().spaceLeft(SPACE_LARGE);
         addPlatform(table, ("headless"), prop.getProperty("headlessTip"));
         addPlatform(table, ("teavm"), prop.getProperty("teavmTip"));
-        addPlatform(table, ("ios-moe"), prop.getProperty("ios-moeTip"));
+//        addPlatform(table, ("ios-moe"), prop.getProperty("ios-moeTip"));
         addPlatform(table, ("lwjgl2"), prop.getProperty("lwjgl2Tip"));
         addPlatform(table, ("server"), prop.getProperty("serverTip"));
         addPlatform(table, ("shared"), prop.getProperty("sharedTip"));

src/main/kotlin/gdx/liftoff/data/languages/Kotlin.kt

@@ -14,7 +14,7 @@ import gdx.liftoff.views.JvmLanguage
 @Suppress("unused") // Class accessed via reflection.
 class Kotlin : Language {
   override val id = "kotlin"
-  override val version = "1.9.22"
+  override val version = "1.9.25"
 
   override fun initiate(project: Project) {
     project.rootGradle.buildDependencies.add("\"org.jetbrains.kotlin:kotlin-gradle-plugin:\$kotlinVersion\"")

src/main/resources/generator/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

src/main/resources/ui-data/defaults.properties

@@ -10,7 +10,7 @@ extensionsDefaultNames=
 thirdPartyDefaultNames=
 templateDefaultName=classic
 groovyDefaultVersion=4.0.22
-kotlinDefaultVersion=1.9.22
+kotlinDefaultVersion=1.9.25
 scalaDefaultVersion=2.13.8
 libgdxDefaultVersion=1.12.1
 javaDefaultVersion=11