Struct rin::ecs::operators::HasOption[][src]

pub struct HasOption<T> where
    T: 'static, 
{ /* fields omitted */ }

Operator that matches every entity no matter if it has the component or not but doesn’t give access to the component, only returns a boolean specifying if the component is present or not.

This doesn’t lock the accessed component so it can be used in parallel even with write access operators

for (has_pos, vel) in entities.iter_for::<(HasOption<Position>, Read<Velocity>)>(){
    if has_pos {
        // ...
    }
}

Will select all entities that optionally have Position and have a Velocity component pos will be false for those that don’t have Position

Methods from Deref<Target = bool>

Trait Implementations

impl<T> DataAccesses for HasOption<T> where
    T: 'static, 
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impl<T> Deref for HasOption<T> where
    T: 'static, 
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type Target = bool

The resulting type after dereferencing.

impl<'a, T> FromComponent<'a, bool> for HasOption<T> where
    T: 'static, 
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impl<'a, T> UnorderedData<'a> for HasOption<T> where
    T: 'static, 
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type Iter = IterHasOption<'a, T>

type IterMut = IterHasOption<'a, T>

type Components = T

type ComponentsRef = bool

type Storage = StorageHasOption<'a, T>

impl<'_, T> SafeIter<'_> for HasOption<T>[src]

Auto Trait Implementations

impl<T> RefUnwindSafe for HasOption<T> where
    T: RefUnwindSafe

impl<T> Send for HasOption<T> where
    T: Send

impl<T> Sync for HasOption<T> where
    T: Sync

impl<T> Unpin for HasOption<T> where
    T: Unpin

impl<T> UnwindSafe for HasOption<T> where
    T: UnwindSafe

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Any for T where
    T: Any
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> Downcast for T where
    T: Any
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impl<T> DowncastSync for T where
    T: Any + Send + Sync
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impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<V> IntoPnt<V> for V[src]

impl<V> IntoVec<V> for V[src]

impl<T> Pointable for T[src]

type Init = T

The type for initializers.

impl<T> Same<T> for T[src]

type Output = T

Should always be Self

impl<SS, SP> SupersetOf<SS> for SP where
    SS: SubsetOf<SP>, 
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impl<SS, SP> SupersetOf<SS> for SP where
    SS: SubsetOf<SP>, 
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impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<V, T> VZip<V> for T where
    V: MultiLane<T>, 
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