Add Vanilla runs in NeoForge development environment

buildSrc/src/main/java/net/neoforged/neodev/NeoDevBasePlugin.java

@@ -1,9 +1,12 @@
 package net.neoforged.neodev;
 
 import net.neoforged.minecraftdependencies.MinecraftDependenciesPlugin;
+import net.neoforged.moddevgradle.internal.NeoDevFacade;
 import net.neoforged.nfrtgradle.CreateMinecraftArtifacts;
+import net.neoforged.nfrtgradle.DownloadAssets;
 import org.gradle.api.Plugin;
 import org.gradle.api.Project;
+import org.gradle.api.plugins.JavaPlugin;
 import org.gradle.api.tasks.Sync;
 
 public class NeoDevBasePlugin implements Plugin<Project> {
@@ -12,13 +15,46 @@ public void apply(Project project) {
         // These plugins allow us to declare dependencies on Minecraft libraries needed to compile the official sources
         project.getPlugins().apply(MinecraftDependenciesPlugin.class);
 
+        var dependencyFactory = project.getDependencyFactory();
+        var tasks = project.getTasks();
+        var neoDevBuildDir = project.getLayout().getBuildDirectory().dir("neodev");
+
+        var extension = project.getExtensions().create(NeoDevExtension.NAME, NeoDevExtension.class);
+
         var createSources = NeoDevPlugin.configureMinecraftDecompilation(project);
+        // Task must run on sync to have MC resources available for IDEA nondelegated builds.
+        NeoDevFacade.runTaskOnProjectSync(project, createSources);
 
-        project.getTasks().register("setup", Sync.class, task -> {
+        tasks.register("setup", Sync.class, task -> {
             task.setGroup(NeoDevPlugin.GROUP);
             task.setDescription("Replaces the contents of the base project sources with the unpatched, decompiled Minecraft source code.");
             task.from(project.zipTree(createSources.flatMap(CreateMinecraftArtifacts::getSourcesArtifact)));
             task.into(project.file("src/main/java/"));
         });
+
+        var downloadAssets = tasks.register("downloadAssets", DownloadAssets.class, task -> {
+            task.setGroup(NeoDevPlugin.INTERNAL_GROUP);
+            task.getNeoFormArtifact().set(createSources.flatMap(CreateMinecraftArtifacts::getNeoFormArtifact));
+            task.getAssetPropertiesFile().set(neoDevBuildDir.map(dir -> dir.file("minecraft_assets.properties")));
+        });
+
+        // MC looks for its resources on the classpath.
+        var runtimeClasspath = project.getConfigurations().getByName(JavaPlugin.RUNTIME_ONLY_CONFIGURATION_NAME);
+        runtimeClasspath.getDependencies().add(
+                dependencyFactory.create(
+                        project.files(createSources.flatMap(CreateMinecraftArtifacts::getResourcesArtifact))
+                )
+        );
+        NeoDevFacade.setupRuns(
+                project,
+                neoDevBuildDir,
+                extension.getRuns(),
+                // Pass an empty file collection for the userdev config.
+                // This will cause MDG to generate a dummy config suitable for vanilla.
+                project.files(),
+                modulePath -> {},
+                legacyClasspath -> {},
+                downloadAssets.flatMap(DownloadAssets::getAssetPropertiesFile)
+        );
     }
 }

projects/base/.gitignore

@@ -1,3 +1,4 @@
 src
 build
 .gradle
+run

projects/base/build.gradle

@@ -13,3 +13,19 @@ dependencies {
         endorseStrictVersions()
     }
 }
+
+neoDev {
+    runs {
+        client {
+            client()
+        }
+        server {
+            server()
+        }
+        // Generated files are in run/generated
+        data {
+            data()
+            programArgument "--all"
+        }
+    }
+}