Struct oxygengine::prelude::Satisfies

pub struct Satisfies<Q>(/* private fields */);

A query that matches all entities, yielding bools indicating whether each satisfies query Q

Does not borrow any components, making it faster and more concurrency-friendly than Option<Q>.

Example

let mut world = World::new();
let a = world.spawn((123, true, "abc"));
let b = world.spawn((456, false));
let c = world.spawn((42, "def"));
let entities = world.query::<Satisfies<&bool>>()
    .iter()
    .map(|(e, x)| (e, x))
    .collect::<Vec<_>>();
assert_eq!(entities.len(), 3);
assert!(entities.contains(&(a, true)));
assert!(entities.contains(&(b, true)));
assert!(entities.contains(&(c, false)));

Trait Implementations

impl<Q> Query for Satisfies<Q>where Q: Query,

type Item<'q> = bool

Type of results yielded by the query

impl<Q> QueryShared for Satisfies<Q>