Add support for dynamic registry creation across platforms

Introduced a mechanism to register new registries dynamically for both NeoForge and Fabric platforms. This includes implementing `registerNewRegistry` in `RegistrationHelper` and integrating registry registration logic in `common` and platform-specific code. Also added a Fabric test mod module and updated the existing configurations for consistency.

Author: ThePandaOliver

common-testmod/src/main/java/me/pandamods/test/TestMod.java

@@ -12,11 +12,19 @@
 
 package me.pandamods.test;
 
+import com.mojang.serialization.Lifecycle;
+import dev.architectury.event.events.client.ClientLifecycleEvent;
 import me.pandamods.pandalib.config.PandaLibConfig;
 import me.pandamods.pandalib.config.holders.ClientConfigHolder;
 import me.pandamods.pandalib.config.holders.CommonConfigHolder;
+import me.pandamods.pandalib.registry.DeferredObject;
+import me.pandamods.pandalib.registry.DeferredRegister;
+import me.pandamods.pandalib.registry.RegistryRegister;
 import me.pandamods.test.config.ClientTestConfig;
 import me.pandamods.test.config.CommonTestConfig;
+import net.minecraft.core.MappedRegistry;
+import net.minecraft.core.Registry;
+import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.ResourceLocation;
 
 public class TestMod {
@@ -26,8 +34,16 @@ public class TestMod {
 	private static final CommonConfigHolder<CommonTestConfig> COMMON_TEST_CONFIG = PandaLibConfig.registerCommon(CommonTestConfig.class);
 	private static final ClientConfigHolder<ClientTestConfig> CLIENT_TEST_CONFIG = PandaLibConfig.registerClient(ClientTestConfig.class);
 
+	public static final ResourceKey<Registry<TestRegistry>> TEST_REGISTRY_KEY = ResourceKey.createRegistryKey(TestMod.resourceLocation("test_registry"));
+	public static final Registry<TestRegistry> TEST_REGISTRY = RegistryRegister.register(new MappedRegistry<>(TEST_REGISTRY_KEY, Lifecycle.stable()));
+	
+	public static final DeferredRegister<TestRegistry> TEST_REGISTER = DeferredRegister.create(MOD_ID, TEST_REGISTRY);
+	public static final DeferredObject<TestRegistry> TEST1 = TEST_REGISTER.register("test1", TestRegistry::new);
+	public static final DeferredObject<TestRegistry> TEST2 = TEST_REGISTER.register("test2", TestRegistry::new);
+
 	public TestMod() {
 		instance = this;
+		TEST_REGISTER.register();
 	}
 
 	public static ResourceLocation resourceLocation(String path) {
@@ -37,4 +53,6 @@ public static ResourceLocation resourceLocation(String path) {
 	public static TestMod getInstance() {
 		return instance;
 	}
+
+	public static class TestRegistry { }
 }

common/src/main/java/me/pandamods/pandalib/platform/services/RegistrationHelper.java

@@ -13,9 +13,12 @@
 package me.pandamods.pandalib.platform.services;
 
 import me.pandamods.pandalib.registry.DeferredObject;
+import net.minecraft.core.Registry;
 
 import java.util.function.Supplier;
 
 public interface RegistrationHelper {
 	<T> void register(DeferredObject<? extends T> deferredObject, Supplier<? extends T> supplier);
+	
+	<T> void registerNewRegistry(Registry<T> registry);
 }

common/src/main/java/me/pandamods/pandalib/registry/DeferredRegister.java

@@ -22,6 +22,7 @@
 import java.util.function.Function;
 import java.util.function.Supplier;
 
+@SuppressWarnings("unused")
 public class DeferredRegister<T> {
 	private final String namespace;
 	private final ResourceKey<? extends Registry<T>> registryKey;

common/src/main/java/me/pandamods/pandalib/registry/RegistryRegister.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2024 Oliver Froberg (The Panda Oliver)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ *  along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package me.pandamods.pandalib.registry;
+
+import me.pandamods.pandalib.platform.Services;
+import net.minecraft.core.Registry;
+
+@SuppressWarnings("unused")
+public class RegistryRegister<T> {
+	@SuppressWarnings({ "unchecked", "rawtypes" })
+	public static <T> Registry<T> register(Registry<T> registry) {
+		Services.REGISTRATION.registerNewRegistry(registry);
+		return registry;
+	}
+}

fabric-testmod/build.gradle.kts

@@ -0,0 +1,61 @@
+import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
+import net.fabricmc.loom.task.RemapJarTask
+
+architectury {
+	platformSetupLoomIde()
+	fabric()
+}
+
+//loom.accessWidenerPath.set(project(":common").loom.accessWidenerPath)
+
+configurations {
+	getByName("developmentFabric").extendsFrom(configurations["common"])
+}
+
+repositories {
+	maven("https://maven.terraformersmc.com/releases/")
+}
+
+dependencies {
+	modImplementation("net.fabricmc:fabric-loader:${properties["fabric_version"]}")
+	modApi("net.fabricmc.fabric-api:fabric-api:${properties["fabric_api_version"]}")
+
+	modApi("dev.architectury:architectury-fabric:${properties["deps_architectury_version"]}")
+	modApi("com.terraformersmc:modmenu:${properties["deps_modmenu_version"]}")
+	
+	implementation(project(":fabric", "namedElements")) { isTransitive = false }
+	common(project(":common", "namedElements")) { isTransitive = false }
+	common(project(":common-testmod", "namedElements")) { isTransitive = false }
+}
+
+tasks.remapJar {
+	injectAccessWidener.set(true)
+}
+
+tasks.withType<RemapJarTask> {
+	val shadowJar = tasks.getByName<ShadowJar>("shadowJar")
+	inputFile.set(shadowJar.archiveFile)
+}
+
+publishing {
+	publications {
+		register("mavenJava", MavenPublication::class) {
+			groupId = properties["maven_group"] as String
+			artifactId = "${properties["mod_id"]}-${project.name}"
+			version = "${project.version}-build.${project.findProperty("buildNumber") ?: "-1"}"
+
+			from(components["java"])
+		}
+	}
+
+	repositories {
+		maven {
+			name = "GitHubPackages"
+			url = uri("https://maven.pkg.github.com/PandaMods-Dev/PandaLib")
+			credentials {
+				username = project.findProperty("gpr.user") as String? ?: System.getenv("USERNAME")
+				password = project.findProperty("gpr.key") as String? ?: System.getenv("TOKEN")
+			}
+		}
+	}
+}

fabric-testmod/src/main/java/me/pandamods/testmod/fabric/TestModFabric.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2024 Oliver Froberg (The Panda Oliver)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ * You should have received a copy of the GNU General Public License
+ *  along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package me.pandamods.testmod.fabric;
+
+import me.pandamods.test.TestMod;
+import net.fabricmc.api.ModInitializer;
+
+public class TestModFabric implements ModInitializer {
+	@Override
+	public void onInitialize() {
+		new TestMod();
+	}
+}

fabric-testmod/src/main/java/me/pandamods/testmod/fabric/client/TestModClientFabric.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2024 Oliver Froberg (The Panda Oliver)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ * You should have received a copy of the GNU General Public License
+ *  along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package me.pandamods.testmod.fabric.client;
+
+import me.pandamods.test.client.TestModClient;
+import net.fabricmc.api.ClientModInitializer;
+
+public class TestModClientFabric implements ClientModInitializer {
+	@Override
+	public void onInitializeClient() {
+		new TestModClient();
+	}
+}

fabric-testmod/src/main/resources/fabric.mod.json

@@ -0,0 +1,27 @@
+{
+  "schemaVersion": 1,
+	"id": "testmod",
+	"version": "${mod_version}",
+	"name": "Test Mod",
+	"description": "Testing environment for mod development and testing purposes",
+	"authors": [
+		"${mod_author}"
+	],
+	"contact": {},
+  "license": "${mod_license}",
+	"icon": "assets/${mod_id}/icon.png",
+  "environment": "*",
+  "entrypoints": {
+    "main": [
+			"me.pandamods.testmod.fabric.TestModFabric"
+    ],
+		"client": [
+			"me.pandamods.testmod.fabric.client.TestModClientFabric"
+		]
+  },
+	"mixins": [],
+  "depends": {
+    "fabric": "*",
+    "minecraft": "${fabric_version_range}"
+  }
+}

fabric/src/main/java/me/pandamods/pandalib/fabric/platform/RegistrationHelperImpl.java

@@ -14,7 +14,11 @@
 
 import me.pandamods.pandalib.platform.services.RegistrationHelper;
 import me.pandamods.pandalib.registry.DeferredObject;
+import net.minecraft.core.RegistrationInfo;
 import net.minecraft.core.Registry;
+import net.minecraft.core.WritableRegistry;
+import net.minecraft.core.registries.BuiltInRegistries;
+import net.minecraft.resources.ResourceLocation;
 
 import java.util.function.Supplier;
 
@@ -24,4 +28,13 @@ public class RegistrationHelperImpl implements RegistrationHelper {
 	public <T> void register(DeferredObject<? extends T> deferredObject, Supplier<? extends T> supplier) {
 		Registry.register((Registry<T>) deferredObject.getRegistry(), deferredObject.getId(), supplier.get());
 	}
+
+	@Override
+	public <T> void registerNewRegistry(Registry<T> registry) {
+		ResourceLocation registryName = registry.key().location();
+		if (BuiltInRegistries.REGISTRY.containsKey(registryName))
+			throw new IllegalStateException("Attempted duplicate registration of registry " + registryName);
+		
+		((WritableRegistry) BuiltInRegistries.REGISTRY).register(registry.key(), registry, RegistrationInfo.BUILT_IN);
+	}
 }

neoforge-testmod/src/main/java/me/pandamods/testmod/neoforge/TestModNeoForge.java

@@ -12,7 +12,6 @@
 
 package me.pandamods.testmod.neoforge;
 
-import me.pandamods.pandalib.PandaLib;
 import me.pandamods.test.TestMod;
 import net.neoforged.bus.api.IEventBus;
 import net.neoforged.fml.common.Mod;

neoforge-testmod/src/main/java/me/pandamods/testmod/neoforge/client/TestModClientNeoForge.java

@@ -12,7 +12,6 @@
 
 package me.pandamods.testmod.neoforge.client;
 
-import me.pandamods.pandalib.PandaLib;
 import me.pandamods.test.TestMod;
 import me.pandamods.test.client.TestModClient;
 import net.neoforged.api.distmarker.Dist;

neoforge/src/main/java/me/pandamods/pandalib/neoforge/PandaLibNeoForge.java

@@ -25,7 +25,9 @@ public PandaLibNeoForge(IEventBus eventBus) {
 		new PandaLib();
 
 		eventBus.addListener(NetworkHelperImpl::registerPackets);
-		if (Services.REGISTRATION instanceof RegistrationHelperImpl helper)
+		if (Services.REGISTRATION instanceof RegistrationHelperImpl helper) {
 			eventBus.addListener(helper::registerEvent);
+			eventBus.addListener(helper::registerNewRegistryEvent);
+		}
     }
 }

neoforge/src/main/java/me/pandamods/pandalib/neoforge/platform/RegistrationHelperImpl.java

@@ -16,14 +16,18 @@
 import me.pandamods.pandalib.registry.DeferredObject;
 import net.minecraft.core.Registry;
 import net.minecraft.resources.ResourceKey;
+import net.neoforged.neoforge.registries.NewRegistryEvent;
 import net.neoforged.neoforge.registries.RegisterEvent;
 
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.function.Supplier;
 
 public class RegistrationHelperImpl implements RegistrationHelper {
 	private final Map<ResourceKey<? extends Registry<?>>, PendingRegistries<?>> pendingRegistries = new HashMap<>();
+	private final List<Registry<?>> pendingRegistryTypes = new ArrayList<>();
 
 	@Override
 	@SuppressWarnings("unchecked")
@@ -34,9 +38,18 @@ public <T> void register(DeferredObject<? extends T> deferredObject, Supplier<?
 		pending.add(deferredObject, supplier);
 	}
 
+	@Override
+	public <T> void registerNewRegistry(Registry<T> registry) {
+		pendingRegistryTypes.add(registry);
+	}
+
 	public void registerEvent(RegisterEvent event) {
 		pendingRegistries.values().forEach(pending -> pending.register(event));
 	}
+	
+	public void registerNewRegistryEvent(NewRegistryEvent event) {
+		pendingRegistryTypes.forEach(event::register);
+	}
 
 	private static class PendingRegistries<T> {
 		private final ResourceKey<? extends Registry<T>> registryKey;

settings.gradle.kts

@@ -19,5 +19,5 @@ pluginManagement.repositories {
 }
 
 include("common", "common-testmod")
-include("fabric")
+include("fabric", "fabric-testmod")
 include("neoforge", "neoforge-testmod")