Trait Entity 

pub trait Entity: Any + Default {
    // Required methods
    fn id() -> usize;
    fn as_any(&self) -> &dyn Any;
    fn as_any_mut(&mut self) -> &mut dyn Any;

    // Provided methods
    fn name() -> &'static str { ... }
    fn type_id() -> TypeId { ... }
    fn property_ids() -> &'static [TypeId] { ... }
    fn required_property_ids() -> &'static [TypeId] { ... }
    fn new_boxed() -> Box<Self> { ... }
}

All entities must implement this trait using the define_entity! macro.

Required Methods

fn id() -> usize

The index of this item in the owner, which is initialized globally per type upon first access. We explicitly initialize this in a ctor in order to know how many Entity types exist globally when we construct any EntityStore.

fn as_any(&self) -> &dyn Any

Standard pattern for downcasting to concrete types.

fn as_any_mut(&mut self) -> &mut dyn Any

Provided Methods

fn name() -> &'static str

fn type_id() -> TypeId

fn property_ids() -> &'static [TypeId]

Get a list of all properties this Entity has. This list is static, computed in with ctor magic.

fn required_property_ids() -> &'static [TypeId]

Get a list of all properties of this Entity that must be supplied when a new entity is created.

fn new_boxed() -> Box<Self>

Creates a new boxed instance of the item.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors