Struct flax::fetch::Mutable

pub struct Mutable<T: ComponentValue>(_);

Mutable component fetch See crate::Component::as_mut

Trait Implementations

impl<T: Clone + ComponentValue> Clone for Mutable<T>

fn clone(&self) -> Mutable<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug + ComponentValue> Debug for Mutable<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'w, T> Fetch<'w> for Mutable<T>where
    T: ComponentValue,

const MUTABLE: bool = true

true if the fetch mutates any component and thus needs a change event

type Filter = Nothing

The filter associated to the fetch, if applicable. If the fetch does not use a filter, use the crate::All filter

type Prepared = PreparedComponentMut<'w, T>

The prepared version of the fetch

fn prepare(&self, data: FetchPrepareData<'w>) -> Option<Self::Prepared>

Prepare the query against an archetype. Returns None if doesn’t match. If Self::matches true, this needs to return Some

fn matches(&self, data: FetchPrepareData<'_>) -> bool

Returns true if the fetch matches the archetype

fn describe(&self, f: &mut dyn Write) -> Result

Describes the fetch in a human-readable fashion

fn difference(&self, data: FetchPrepareData<'_>) -> Vec<String>

Returns the required elements in self which are not in archetype

fn access(&self, data: FetchPrepareData<'_>) -> Vec<Access>

Returns which components and how will be accessed for an archetype.

fn filter(&self) -> Self::Filter

Returns the filter if any

const HAS_FILTER: bool = false

true if the fetch has a filter

impl<'q, T: ComponentValue> FetchItem<'q> for Mutable<T>

type Item = &'q mut T

The item yielded by the prepared fetch