Struct PreUpdate

pub struct PreUpdate;

The schedule that contains logic that must run before Update. For example, a system that reads raw keyboard input OS events into an Events resource. This enables systems in Update to consume the events from the Events resource without actually knowing about (or taking a direct scheduler dependency on) the “os-level keyboard event system”.

PreUpdate exists to do “engine/plugin preparation work” that ensures the APIs consumed in Update are “ready”. PreUpdate abstracts out “pre work implementation details”.

See the Main schedule for some details about how schedules are run.

Trait Implementations

impl Clone for PreUpdate

fn clone(&self) -> PreUpdate

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PreUpdate

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

Formats the value using the given formatter.

impl Hash for PreUpdate

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for PreUpdate

fn eq(&self, other: &PreUpdate) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ScheduleLabel for PreUpdate

where Self: 'static + Send + Sync + Clone + Eq + Debug + Hash,

fn dyn_clone(&self) -> Box<dyn ScheduleLabel>

Clones this ScheduleLabel.

fn as_dyn_eq(&self) -> &dyn DynEq

Casts this value to a form where it can be compared with other type-erased values.

fn dyn_hash(&self, state: &mut dyn Hasher)

Feeds this value into the given Hasher.

fn intern(&self) -> Interned<dyn ScheduleLabel>

where Self: Sized,

Returns an Interned value corresponding to self.

impl Eq for PreUpdate

impl StructuralPartialEq for PreUpdate