Struct DataComponentRegistry 

pub struct DataComponentRegistry {
    entries: Vec<ComponentEntryRef>,
    by_key: FxHashMap<Identifier, usize>,
    allows_registering: bool,
}

Registry of all data component types.

Stores metadata about each component type including how to serialize/deserialize them for network and persistent storage.

Fields

entries: Vec<ComponentEntryRef>

Component entries indexed by network ID

by_key: FxHashMap<Identifier, usize>

Map from component key to network ID

allows_registering: bool

Whether registration is still allowed

Implementations

impl DataComponentRegistry

pub fn new() -> Self

pub fn register<T>( &mut self, component: DataComponentType<T>, expected_discriminant: ComponentDataDiscriminant, )

where T: 'static + Component + WriteTo + ReadFrom + ToNbtTag + FromNbtTag,

Registers a vanilla component type.

The component type T must implement the necessary serialization traits. This creates the appropriate reader/writer functions automatically.

pub fn register_custom_network<T>( &mut self, component: DataComponentType<T>, expected_discriminant: ComponentDataDiscriminant, network_reader: NetworkReader, network_writer: NetworkWriter, )

where T: 'static + Component + ToNbtTag + FromNbtTag,

Registers a component with custom network reader/writer functions.

Use this when the default WriteTo/ReadFrom implementations don’t match the network encoding (e.g., VarInt-encoded i32 components). NBT serialization still uses the type’s ToNbtTag/FromNbtTag impls.

pub fn register_dynamic( &mut self, key: Identifier, expected_discriminant: ComponentDataDiscriminant, network_reader: NetworkReader, network_writer: NetworkWriter, nbt_reader: NbtReader, nbt_writer: NbtWriter, ) -> usize

Registers a dynamic/plugin component type.

Plugin components use the ComponentData::Other variant and handle their own serialization. The provided functions read/write raw bytes.

pub fn get_id<T>(&self, component: DataComponentType<T>) -> Option<usize>

Gets the network ID for a component type.

pub fn get_key_by_id(&self, id: usize) -> Option<&Identifier>

Gets the component key by network ID.

Trait Implementations

impl Default for DataComponentRegistry

fn default() -> Self

Returns the “default value” for a type.

impl RegistryExt for DataComponentRegistry

type Entry = ComponentEntry

fn freeze(&mut self)

fn by_id(&self, id: usize) -> Option<&'static ComponentEntry>

fn by_key(&self, key: &Identifier) -> Option<&'static ComponentEntry>

fn id_from_key(&self, key: &Identifier) -> Option<usize>

fn len(&self) -> usize

fn is_empty(&self) -> bool