[−][src]Struct oxygengine_core::ecs::changeset::ChangeSet
Change set that can be collected from an iterator, and joined on for easy application to components.
Example
pub struct Health(i32); impl Component for Health { type Storage = DenseVecStorage<Self>; } let a = world.create_entity().with(Health(100)).build(); let b = world.create_entity().with(Health(200)).build(); let changeset = [(a, 32), (b, 12), (b, 13)] .iter() .cloned() .collect::<ChangeSet<i32>>(); for (health, modifier) in (&mut world.write_storage::<Health>(), &changeset).join() { health.0 -= modifier; }
Implementations
impl<T> ChangeSet<T>
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pub fn new() -> ChangeSet<T>
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Create a new change set
pub fn add(&mut self, entity: Entity, value: T) where
T: AddAssign<T>,
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T: AddAssign<T>,
Add a value to the change set. If the entity already have a value in the change set, the incoming value will be added to that.
pub fn clear(&mut self)
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Clear the changeset
Trait Implementations
impl<T> Default for ChangeSet<T>
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impl<T> Extend<(Entity, T)> for ChangeSet<T> where
T: AddAssign<T>,
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T: AddAssign<T>,
fn extend<I>(&mut self, iter: I) where
I: IntoIterator<Item = (Entity, T)>,
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I: IntoIterator<Item = (Entity, T)>,
fn extend_one(&mut self, item: A)
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fn extend_reserve(&mut self, additional: usize)
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impl<T> FromIterator<(Entity, T)> for ChangeSet<T> where
T: AddAssign<T>,
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T: AddAssign<T>,
impl<T> Join for ChangeSet<T>
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A Join
implementation for ChangeSet
that simply removes all the entries
on a call to get
.
type Mask = BitSet
Type of joined bit mask.
type Type = T
Type of joined components.
type Value = DenseVecStorage<T>
Type of joined storages.
unsafe fn open(
self
) -> (<ChangeSet<T> as Join>::Mask, <ChangeSet<T> as Join>::Value)
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self
) -> (<ChangeSet<T> as Join>::Mask, <ChangeSet<T> as Join>::Value)
unsafe fn get(
value: &mut <ChangeSet<T> as Join>::Value,
id: u32
) -> <ChangeSet<T> as Join>::Type
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value: &mut <ChangeSet<T> as Join>::Value,
id: u32
) -> <ChangeSet<T> as Join>::Type
fn join(self) -> JoinIter<Self>ⓘ
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fn maybe(self) -> MaybeJoin<Self>
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fn is_unconstrained() -> bool
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impl<'a, T> Join for &'a mut ChangeSet<T>
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type Mask = &'a BitSet
Type of joined bit mask.
type Type = &'a mut T
Type of joined components.
type Value = &'a mut DenseVecStorage<T>
Type of joined storages.
unsafe fn open(
self
) -> (<&'a mut ChangeSet<T> as Join>::Mask, <&'a mut ChangeSet<T> as Join>::Value)
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self
) -> (<&'a mut ChangeSet<T> as Join>::Mask, <&'a mut ChangeSet<T> as Join>::Value)
unsafe fn get(
v: &mut <&'a mut ChangeSet<T> as Join>::Value,
id: u32
) -> <&'a mut ChangeSet<T> as Join>::Type
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v: &mut <&'a mut ChangeSet<T> as Join>::Value,
id: u32
) -> <&'a mut ChangeSet<T> as Join>::Type
fn join(self) -> JoinIter<Self>ⓘ
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fn maybe(self) -> MaybeJoin<Self>
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fn is_unconstrained() -> bool
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impl<'a, T> Join for &'a ChangeSet<T>
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type Mask = &'a BitSet
Type of joined bit mask.
type Type = &'a T
Type of joined components.
type Value = &'a DenseVecStorage<T>
Type of joined storages.
unsafe fn open(
self
) -> (<&'a ChangeSet<T> as Join>::Mask, <&'a ChangeSet<T> as Join>::Value)
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self
) -> (<&'a ChangeSet<T> as Join>::Mask, <&'a ChangeSet<T> as Join>::Value)
unsafe fn get(
value: &mut <&'a ChangeSet<T> as Join>::Value,
id: u32
) -> <&'a ChangeSet<T> as Join>::Type
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value: &mut <&'a ChangeSet<T> as Join>::Value,
id: u32
) -> <&'a ChangeSet<T> as Join>::Type
fn join(self) -> JoinIter<Self>ⓘ
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fn maybe(self) -> MaybeJoin<Self>
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fn is_unconstrained() -> bool
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Auto Trait Implementations
impl<T> RefUnwindSafe for ChangeSet<T> where
T: RefUnwindSafe,
T: RefUnwindSafe,
impl<T> Send for ChangeSet<T> where
T: Send,
T: Send,
impl<T> Sync for ChangeSet<T> where
T: Sync,
T: Sync,
impl<T> Unpin for ChangeSet<T> where
T: Unpin,
T: Unpin,
impl<T> UnwindSafe for ChangeSet<T> where
T: UnwindSafe,
T: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Any for T where
T: Any,
T: Any,
fn get_type_id(&self) -> TypeId
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Event for T where
T: Send + Sync + 'static,
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T: Send + Sync + 'static,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Resource for T where
T: Any,
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T: Any,
impl<T> TryDefault for T where
T: Default,
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T: Default,
fn try_default() -> Result<T, String>
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fn unwrap_default() -> Self
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,