AnvilLib

AnvilLib is a NeoForge mod library developed by Anvil Dev, providing Minecraft mod developers with a
series of practical tools and frameworks.

Features

AnvilLib adopts a modular design and includes the following functional modules:

Module	Description
Config	Annotation-based configuration system
Integration	Mod compatibility integration framework
Network	Networking API with automatic packet registration
Recipe	In-world recipe system
Moveable Entity Block	Support for block entities movable by pistons
Registrum	Simplified registration system
Main	Aggregated module that bundles all submodules

Module Introduction

Config Module

Provides an annotation-based configuration management system to simplify the definition and management of mod configurations.

Key Features:

• Define configuration classes using @Config annotation
• Add configuration comments with @Comment
• Define numerical ranges with @BoundedDiscrete
• Create nested configurations with @CollapsibleObject
• Automatically generate client configuration GUI

Usage Example:

@Config(name = "my_mod", type = ModConfig.Type.COMMON)
public class MyModConfig {
    @Comment("Enable debug mode")
    public boolean debugMode = false;

    @Comment("Maximum count")
    @BoundedDiscrete(min = 1, max = 100)
    public int maxCount = 10;
}

// Register configuration
MyModConfig config = ConfigManager.register("my_mod", MyModConfig::new);

Integration Module

Provides a framework for mod integrations, supporting automatic loading of integration code based on the presence of other mods.

Key Features:

• Declare integration classes with @Integration annotation
• Support for version range matching
• Support for different runtime environments (CLIENT / DEDICATED_SERVER / DATA)

Usage Example:

@Integration(value = "jei", version = "[19.0,)")
public class JEIIntegration {
    public void init() {
        // JEI integration logic
    }
}

Network Module

Provides a NeoForge networking abstraction with package-based packet auto-registration.

Key Features:

• Define packet direction using IClientboundPacket / IServerboundPacket / IInsensitiveBiPacket
• Automatically register packet classes in a package via NetworkRegistrar.register(...)
• Supports PLAY, CONFIGURATION, and COMMON protocols

Usage Example:

@SubscribeEvent
public static void onRegisterPayload(RegisterPayloadHandlersEvent event) {
    PayloadRegistrar registrar = event.registrar("1");
    NetworkRegistrar.register(registrar, "my_mod");
}

Recipe Module

Provides an in-world recipe system, allowing recipes to be executed in the world (rather than in crafting tables).

Key Features:

• Supports custom recipe triggers (Trigger)
• Supports recipe predicates (Predicate) for conditional checks
• Supports multiple recipe outcomes (Outcome)
• Built-in priority system
• Full datapack support

Recipe Components:

• Trigger: Conditions to trigger the recipe (e.g., item dropping, explosions)
• Predicate: Recipe matching conditions
• Outcome: Recipe execution results (e.g., spawning items, setting blocks)

Moveable Entity Block Module

Allows blocks with block entities to be pushed by pistons while preserving their data.

Usage Example:

public class MyBlock extends Block implements IMoveableEntityBlock {
    @Override
    public CompoundTag clearData(Level level, BlockPos pos) {
        // Return block entity data to preserve
        BlockEntity be = level.getBlockEntity(pos);
        return be != null ? be.saveWithoutMetadata(level.registryAccess()) : new CompoundTag();
    }

    @Override
    public void setData(Level level, BlockPos pos, CompoundTag nbt) {
        // Restore block entity data at new position
        BlockEntity be = level.getBlockEntity(pos);
        if (be != null) {
            be.loadAdditional(nbt, level.registryAccess());
        }
    }
}

Registrum Module

A registration system based on Registrate, simplifying the registration process for items, blocks,
entities, etc.

Key Features:

• Chain-style API design
• Automatic language file generation
• Automatic datapack generation
• Support for various builders

Usage Example:

public static final Registrum REGISTRUM = Registrum.create("my_mod");

public static final RegistryEntry<Item> MY_ITEM = REGISTRUM
    .item("my_item", Item::new)
    .properties(p -> p.stacksTo(16))
    .register();

Main Module

anvillib-neoforge-1.21.1 is the aggregate artifact. It bundles and re-exports:

• config
• integration
• network
• recipe
• moveable-entity-block
• registrum

Dependency Integration

Gradle (Groovy DSL)

repositories {
    mavenCentral() // This project is already uploaded to Maven Central
}

dependencies {
    // Full library
    implementation "dev.anvilcraft.lib:anvillib-neoforge-1.21.1:2.0.0"

    // Or import individual modules as needed
    implementation "dev.anvilcraft.lib:anvillib-config-neoforge-1.21.1:2.0.0"
    implementation "dev.anvilcraft.lib:anvillib-integration-neoforge-1.21.1:2.0.0"
    implementation "dev.anvilcraft.lib:anvillib-network-neoforge-1.21.1:2.0.0"
    implementation "dev.anvilcraft.lib:anvillib-recipe-neoforge-1.21.1:2.0.0"
    implementation "dev.anvilcraft.lib:anvillib-moveable-entity-block-neoforge-1.21.1:2.0.0"
    implementation "dev.anvilcraft.lib:anvillib-registrum-neoforge-1.21.1:2.0.0"
}

Gradle (Kotlin DSL)

repositories {
    mavenCentral() // This project is already uploaded to Maven Central
}

dependencies {
    implementation("dev.anvilcraft.lib:anvillib-neoforge-1.21.1:2.0.0")

    // Optional single-module example
    implementation("dev.anvilcraft.lib:anvillib-network-neoforge-1.21.1:2.0.0")
}

Keep the dependency version aligned with release tags (current project property is mod_version=2.0.0).

Building the Project

# Clone repository
git clone https://github.com/Anvil-Dev/AnvilLib.git
cd AnvilLib

# Build on macOS / Linux
./gradlew build

# Build on Windows (PowerShell / CMD)
gradlew.bat build

Requirements

• Java 21+
• Minecraft 1.21.1
• NeoForge 21.1.x

License

This project is licensed under the MIT License.

Part of the Registrum module code is based on Registrate and follows the Mozilla Public License
2.0.

Author

• Gugle - Main developer

Links

• GitHub Repository
• Issue Tracking