Trait Storage 

pub trait Storage: Sized {
    // Required methods
    fn len(&self) -> usize;
    fn len_mut(&mut self) -> &mut usize;
    fn id(&self) -> StorageId;
    fn empty(id: StorageId) -> EmptyStorage<Self>;
    unsafe fn component<C: Component>(&self) -> &[C];
    unsafe fn component_mut<C: Component>(&self) -> &mut [C];
    fn push_components<C, I>(&mut self, components: I)
       where C: Component,
             I: IntoIterator<Item = C>;
    fn push_component<C: Component>(&mut self, component: C);
    fn contains<C: Component>(&self) -> bool;
    fn types(&self) -> &HashSet<TypeId>;
    fn remove(&mut self, id: ComponentId) -> usize;
}

Storage allows to abstract over different types of storages. The most common storage that implements this trait is SoaStorage.

Required Methods

fn len(&self) -> usize

fn len_mut(&mut self) -> &mut usize

fn id(&self) -> StorageId

fn empty(id: StorageId) -> EmptyStorage<Self>

Creates an EmptyStorage. This storage will not have any registered components when it is created. See RegisterComponent.

unsafe fn component<C: Component>(&self) -> &[C]

Retrieves the component array and panics if C is not inside this storage.

unsafe fn component_mut<C: Component>(&self) -> &mut [C]

Same as Storage::component but mutable.

fn push_components<C, I>(&mut self, components: I)

where C: Component, I: IntoIterator<Item = C>,

Appends components to one array. See AppendComponents that uses this method.

fn push_component<C: Component>(&mut self, component: C)

fn contains<C: Component>(&self) -> bool

Returns true if the Storage has an array of type C.

fn types(&self) -> &HashSet<TypeId>

fn remove(&mut self, id: ComponentId) -> usize

Removes all the components at the specified index.

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

impl Storage for SoaStorage