[][src]Struct specs::changeset::ChangeSet

pub struct ChangeSet<T> { /* fields omitted */ }

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;
}

Methods

impl<T> ChangeSet<T>[src]

pub fn new() -> Self[src]

Create a new change set

pub fn add(&mut self, entity: Entity, value: T) where
    T: AddAssign
[src]

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)[src]

Clear the changeset

Trait Implementations

impl<T> Default for ChangeSet<T>[src]

impl<T> Extend<(Entity, T)> for ChangeSet<T> where
    T: AddAssign
[src]

impl<T> FromIterator<(Entity, T)> for ChangeSet<T> where
    T: AddAssign
[src]

impl<'a, T> Join for &'a mut ChangeSet<T>[src]

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.

impl<'a, T> Join for &'a ChangeSet<T>[src]

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.

impl<T> Join for ChangeSet<T>[src]

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.

Auto Trait Implementations

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

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

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

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

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

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Any for T where
    T: Any
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> Event for T where
    T: Send + Sync + 'static, 
[src]

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

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

impl<T> Resource for T where
    T: Any + Send + Sync
[src]

impl<T> TryDefault for T where
    T: Default
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

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>, 
[src]