Package net.minecraftforge.registries

Class DeferredRegister<T>

java.lang.Object

net.minecraftforge.registries.DeferredRegister<T>

Type Parameters:

T - The base registry type

public class DeferredRegister<T>
extends Object

Utility class to help with managing registry entries. Maintains a list of all suppliers for entries and registers them during the proper Register event. Suppliers should return NEW instances every time. Example Usage:

   private static final DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS, MODID);
   private static final DeferredRegister<Block> BLOCKS = DeferredRegister.create(ForgeRegistries.BLOCKS, MODID);

   public static final RegistryObject<Block> ROCK_BLOCK = BLOCKS.register("rock", () -> new Block(Block.Properties.create(Material.ROCK)));
   public static final RegistryObject<Item> ROCK_ITEM = ITEMS.register("rock", () -> new BlockItem(ROCK_BLOCK.get(), new Item.Properties().group(ItemGroup.MISC)));

   public ExampleMod() {
       ITEMS.register(FMLJavaModLoadingContext.get().getModEventBus());
       BLOCKS.register(FMLJavaModLoadingContext.get().getModEventBus());
   }

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DeferredRegister.EventDispatcher
private static class	DeferredRegister.RegistryHolder<V>

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<RegistryObject<T>,Supplier<? extends T>>	entries
private final Set<RegistryObject<T>>	entriesView
private final String	modid
private final boolean	optionalRegistry
private @Nullable com.google.common.collect.SetMultimap<TagKey<T>,Supplier<T>>	optionalTags
private @Nullable Supplier<RegistryBuilder<?>>	registryFactory
private final ResourceKey<? extends Registry<T>>	registryKey
private boolean	seenRegisterEvent

Constructor Summary

Constructors

Modifier	Constructor	Description
private	DeferredRegister(ResourceKey<? extends Registry<T>> registryKey, String modid, boolean optionalRegistry)
private	DeferredRegister(IForgeRegistry<T> reg, String modid)

Method Summary

Modifier and Type	Method	Description
private void	addEntries(RegisterEvent event)
void	addOptionalTagDefaults(@NotNull TagKey<T> name, @NotNull Set<? extends Supplier<T>> defaults)	Adds defaults to an existing tag key.
static <B> DeferredRegister<B>	create(ResourceKey<? extends Registry<B>> key, String modid)	DeferredRegister factory for custom forge registries or vanilla registries to lookup based on the provided registry key.
static <B> DeferredRegister<B>	create(ResourceLocation registryName, String modid)	DeferredRegister factory for custom forge registries or vanilla registries to lookup based on the provided registry name.
static <B> DeferredRegister<B>	create(IForgeRegistry<B> reg, String modid)	DeferredRegister factory for forge registries that exist before this DeferredRegister is created.
static <B> DeferredRegister<B>	createOptional(ResourceKey<? extends Registry<B>> key, String modid)	DeferredRegister factory for the optional existence of custom forge registries or vanilla registries to lookup based on the provided registry key.
static <B> DeferredRegister<B>	createOptional(ResourceLocation registryName, String modid)	DeferredRegister factory for the optional existence of custom forge registries or vanilla registries to lookup based on the provided registry name.
@NotNull TagKey<T>	createOptionalTagKey(@NotNull String path, @NotNull Set<? extends Supplier<T>> defaults)	Creates a tag key with the current modid and provided path that will use the set of defaults if the tag is not loaded from any datapacks.
@NotNull TagKey<T>	createOptionalTagKey(@NotNull ResourceLocation location, @NotNull Set<? extends Supplier<T>> defaults)	Creates a tag key with the provided location that will use the set of defaults if the tag is not loaded from any datapacks.
private void	createRegistry(NewRegistryEvent event)
@NotNull TagKey<T>	createTagKey(@NotNull String path)	Creates a tag key based on the current modid and provided path as the location and the registry name linked to this DeferredRegister.
@NotNull TagKey<T>	createTagKey(@NotNull ResourceLocation location)	Creates a tag key based on the provided resource location and the registry name linked to this DeferredRegister.
Collection<RegistryObject<T>>	getEntries()
ResourceKey<? extends Registry<T>>	getRegistryKey()
@NotNull ResourceLocation	getRegistryName()
Supplier<IForgeRegistry<T>>	makeRegistry(Supplier<RegistryBuilder<T>> sup)	Only used for custom registries to fill the forge registry held in this DeferredRegister.
private Supplier<IForgeRegistry<T>>	makeRegistry(ResourceLocation registryName, Supplier<RegistryBuilder<T>> sup)
private void	onFill(IForgeRegistry<?> registry)
<I extends T> RegistryObject<I>	register(String name, Supplier<? extends I> sup)	Adds a new supplier to the list of entries to be registered, and returns a RegistryObject that will be populated with the created entry automatically.
void	register(net.minecraftforge.eventbus.api.IEventBus bus)	Adds our event handler to the specified event bus, this MUST be called in order for this class to function.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

registryKey

private final ResourceKey<? extends Registry<T>> registryKey

modid

private final String modid

optionalRegistry

private final boolean optionalRegistry

entries

private final Map<RegistryObject<T>,Supplier<? extends T>> entries

entriesView

private final Set<RegistryObject<T>> entriesView

registryFactory

@Nullable
private @Nullable Supplier<RegistryBuilder<?>> registryFactory

optionalTags

@Nullable
private @Nullable com.google.common.collect.SetMultimap<TagKey<T>,Supplier<T>> optionalTags

seenRegisterEvent

private boolean seenRegisterEvent

Constructor Details

DeferredRegister

private DeferredRegister(ResourceKey<? extends Registry<T>> registryKey,
 String modid,
 boolean optionalRegistry)

DeferredRegister

private DeferredRegister(IForgeRegistry<T> reg,
 String modid)

Method Details

create

public static <B> DeferredRegister<B> create(IForgeRegistry<B> reg,
 String modid)

DeferredRegister factory for forge registries that exist before this DeferredRegister is created.

If you have a supplier, do not use this method. Instead, use one of the other factories that takes in a registry key or registry name.

Parameters:

reg - the forge registry to wrap

modid - the namespace for all objects registered to this DeferredRegister

See Also:

• create(ResourceKey, String)
• create(ResourceLocation, String)

create

public static <B> DeferredRegister<B> create(ResourceKey<? extends Registry<B>> key,
 String modid)

DeferredRegister factory for custom forge registries or vanilla registries to lookup based on the provided registry key. Supports both registries that already exist or do not exist yet.

If the registry is never created, any RegistryObjects made from this DeferredRegister will throw an exception. To allow the optional existence of a registry without error, use createOptional(ResourceKey, String).

Parameters:

key - the key of the registry to reference. May come from another DeferredRegister through getRegistryKey().

modid - the namespace for all objects registered to this DeferredRegister

See Also:

• createOptional(ResourceKey, String)
• create(IForgeRegistry, String)
• create(ResourceLocation, String)

createOptional

public static <B> DeferredRegister<B> createOptional(ResourceKey<? extends Registry<B>> key,
 String modid)

DeferredRegister factory for the optional existence of custom forge registries or vanilla registries to lookup based on the provided registry key. Supports both registries that already exist or do not exist yet.

If the registry is never created, any RegistryObjects made from this DeferredRegister will never be filled but will not throw an exception.

Parameters:

key - the key of the registry to reference

modid - the namespace for all objects registered to this DeferredRegister

See Also:

• create(ResourceKey, String)
• create(IForgeRegistry, String)
• create(ResourceLocation, String)

create

public static <B> DeferredRegister<B> create(ResourceLocation registryName,
 String modid)

DeferredRegister factory for custom forge registries or vanilla registries to lookup based on the provided registry name. Supports both registries that already exist or do not exist yet.

If the registry is never created, any RegistryObjects made from this DeferredRegister will throw an exception. To allow the optional existence of a registry without error, use createOptional(ResourceLocation, String).

Parameters:

registryName - The name of the registry, should include namespace. May come from another DeferredRegister through getRegistryName().

modid - The namespace for all objects registered to this DeferredRegister

See Also:

• createOptional(ResourceLocation, String)
• create(IForgeRegistry, String)
• create(ResourceKey, String)

createOptional

public static <B> DeferredRegister<B> createOptional(ResourceLocation registryName,
 String modid)

DeferredRegister factory for the optional existence of custom forge registries or vanilla registries to lookup based on the provided registry name. Supports both registries that already exist or do not exist yet.

If the registry is never created, any RegistryObjects made from this DeferredRegister will never be filled but will not throw an exception.

Parameters:

registryName - The name of the registry, should include namespace. May come from another DeferredRegister through getRegistryName().

modid - The namespace for all objects registered to this DeferredRegister

See Also:

• create(ResourceLocation, String)
• create(IForgeRegistry, String)
• create(ResourceKey, String)

register

public <I extends T> RegistryObject<I> register(String name,
 Supplier<? extends I> sup)

Adds a new supplier to the list of entries to be registered, and returns a RegistryObject that will be populated with the created entry automatically.

Parameters:

name - The new entry's name, it will automatically have the modid prefixed.

sup - A factory for the new entry, it should return a new instance every time it is called.

Returns:

A RegistryObject that will be updated with when the entries in the registry change.

makeRegistry

public Supplier<IForgeRegistry<T>> makeRegistry(Supplier<RegistryBuilder<T>> sup)

Only used for custom registries to fill the forge registry held in this DeferredRegister. Calls RegistryBuilder.setName(net.minecraft.resources.ResourceLocation) automatically.

Parameters:

sup - Supplier of a RegistryBuilder that initializes a IForgeRegistry during the NewRegistryEvent event

Returns:

A supplier of the IForgeRegistry created by the builder. Will always return null until after the NewRegistryEvent event fires.

createTagKey

@NotNull
public @NotNull TagKey<T> createTagKey(@NotNull
 @NotNull String path)

Creates a tag key based on the current modid and provided path as the location and the registry name linked to this DeferredRegister. To control the namespace, use createTagKey(ResourceLocation).

Throws:

IllegalStateException - If the registry name was not set. Use the factories that take a registry name or forge registry.

See Also:

• createTagKey(ResourceLocation)
• createOptionalTagKey(String, Set)

createTagKey

@NotNull
public @NotNull TagKey<T> createTagKey(@NotNull
 @NotNull ResourceLocation location)

Creates a tag key based on the provided resource location and the registry name linked to this DeferredRegister. To use the current modid as the namespace, use createTagKey(String).

Throws:

IllegalStateException - If the registry name was not set. Use the factories that take a registry name or forge registry.

See Also:

• createTagKey(String)
• createOptionalTagKey(ResourceLocation, Set)

createOptionalTagKey

@NotNull
public @NotNull TagKey<T> createOptionalTagKey(@NotNull
 @NotNull String path,
 @NotNull
 @NotNull Set<? extends Supplier<T>> defaults)

Creates a tag key with the current modid and provided path that will use the set of defaults if the tag is not loaded from any datapacks. Useful on the client side when a server may not provide a specific tag. To control the namespace, use createOptionalTagKey(ResourceLocation, Set).

Throws:

IllegalStateException - If the registry name was not set. Use the factories that take a registry name or forge registry.

See Also:

• createTagKey(String)
• createTagKey(ResourceLocation)
• createOptionalTagKey(ResourceLocation, Set)
• addOptionalTagDefaults(TagKey, Set)

createOptionalTagKey

@NotNull
public @NotNull TagKey<T> createOptionalTagKey(@NotNull
 @NotNull ResourceLocation location,
 @NotNull
 @NotNull Set<? extends Supplier<T>> defaults)

Creates a tag key with the provided location that will use the set of defaults if the tag is not loaded from any datapacks. Useful on the client side when a server may not provide a specific tag. To use the current modid as the namespace, use createOptionalTagKey(String, Set).

Throws:

IllegalStateException - If the registry name was not set. Use the factories that take a registry name or forge registry.

See Also:

• createTagKey(String)
• createTagKey(ResourceLocation)
• createOptionalTagKey(String, Set)
• addOptionalTagDefaults(TagKey, Set)

addOptionalTagDefaults

public void addOptionalTagDefaults(@NotNull
 @NotNull TagKey<T> name,
 @NotNull
 @NotNull Set<? extends Supplier<T>> defaults)

Adds defaults to an existing tag key. The set of defaults will be bound to the tag if the tag is not loaded from any datapacks. Useful on the client side when a server may not provide a specific tag.

Throws:

IllegalStateException - If the registry name was not set. Use the factories that take a registry name or forge registry.

See Also:

• createOptionalTagKey(String, Set)
• createOptionalTagKey(ResourceLocation, Set)

register

public void register(net.minecraftforge.eventbus.api.IEventBus bus)

Adds our event handler to the specified event bus, this MUST be called in order for this class to function. See the example usage.

Parameters:

bus - The Mod Specific event bus.

getEntries

public Collection<RegistryObject<T>> getEntries()

Returns:

The unmodifiable view of registered entries. Useful for bulk operations on all values.

getRegistryKey

public ResourceKey<? extends Registry<T>> getRegistryKey()

Returns:

The registry key stored in this deferred register. Useful for creating new deferred registers based on an existing one.

getRegistryName

@NotNull
public @NotNull ResourceLocation getRegistryName()

Returns:

The registry name stored in this deferred register. Useful for creating new deferred registers based on an existing one.

makeRegistry

private Supplier<IForgeRegistry<T>> makeRegistry(ResourceLocation registryName,
 Supplier<RegistryBuilder<T>> sup)

onFill

private void onFill(IForgeRegistry<?> registry)

addEntries

private void addEntries(RegisterEvent event)

createRegistry

private void createRegistry(NewRegistryEvent event)