Struct bevy::core::FixedTimestep
[−]pub struct FixedTimestep { /* private fields */ }
Expand description
A system run criteria that enables systems or stages to run at a fixed timestep between executions.
This does not guarentee that the time elapsed between executions is exactly the provided fixed timestep, but will guarentee that the execution will run multiple times per game tick until the number of repetitions is as expected.
For example, a system with a fixed timestep run criteria of 120 times per second will run two times during a ~16.667ms frame, once during a ~8.333ms frame, and once every two frames with ~4.167ms frames. However, the same criteria may not result in exactly 8.333ms passing between each execution.
When using this run criteria, it is advised not to rely on Time::delta
or any of it’s
variants for game simulation, but rather use the constant time delta used to initialize the
FixedTimestep
instead.
For more fine tuned information about the execution status of a given fixed timestep,
use the FixedTimesteps
resource.
Implementations
impl FixedTimestep
impl FixedTimestep
pub fn step(step: f64) -> FixedTimestep
pub fn step(step: f64) -> FixedTimestep
Creates a FixedTimestep
that ticks once every step
seconds.
pub fn steps_per_second(rate: f64) -> FixedTimestep
pub fn steps_per_second(rate: f64) -> FixedTimestep
Creates a FixedTimestep
that ticks once every rate
times per second.
pub fn with_label(self, label: &str) -> FixedTimestep
pub fn with_label(self, label: &str) -> FixedTimestep
Sets the label for the timestep. Setting a label allows a timestep
to be observed by the global FixedTimesteps
resource.
Trait Implementations
impl Default for FixedTimestep
impl Default for FixedTimestep
pub fn default() -> FixedTimestep
pub fn default() -> FixedTimestep
Returns the “default value” for a type. Read more
impl System for FixedTimestep
impl System for FixedTimestep
type In = ()
type In = ()
The system’s input. See In
for
FunctionSystem
s. Read more
pub fn new_archetype(&mut self, archetype: &Archetype)
pub fn new_archetype(&mut self, archetype: &Archetype)
Register a new archetype for this system.
pub fn archetype_component_access(&self) -> &Access<ArchetypeComponentId>
pub fn archetype_component_access(&self) -> &Access<ArchetypeComponentId>
Returns the system’s archetype component Access
.
pub fn component_access(&self) -> &Access<ComponentId>
pub fn component_access(&self) -> &Access<ComponentId>
Returns the system’s component Access
.
pub unsafe fn run_unsafe(&mut self, _input: (), world: &World) -> ShouldRun
pub unsafe fn run_unsafe(&mut self, _input: (), world: &World) -> ShouldRun
Runs the system with the given input in the world. Unlike System::run
, this function
takes a shared reference to World
and may therefore break Rust’s aliasing rules, making
it unsafe to call. Read more
pub fn apply_buffers(&mut self, world: &mut World)
pub fn initialize(&mut self, world: &mut World)
pub fn initialize(&mut self, world: &mut World)
Initialize the system.
pub fn check_change_tick(&mut self, change_tick: u32)
Auto Trait Implementations
impl !RefUnwindSafe for FixedTimestep
impl Send for FixedTimestep
impl Sync for FixedTimestep
impl Unpin for FixedTimestep
impl !UnwindSafe for FixedTimestep
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Downcast for T where
T: Any,
impl<T> Downcast for T where
T: Any,
pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘNotable traits for Box<I, A>impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;
pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘNotable traits for Box<I, A>impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;
Convert Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
. Read more
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read more
pub fn as_any(&self) -> &(dyn Any + 'static)
pub fn as_any(&self) -> &(dyn Any + 'static)
Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read more
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert &mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s. Read more
impl<T> FromWorld for T where
T: Default,
impl<T> FromWorld for T where
T: Default,
pub fn from_world(_world: &mut World) -> T
pub fn from_world(_world: &mut World) -> T
Creates Self
using data from the given World
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
sourcefn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
impl<SystemA, ParamA, Payload, SystemB, ParamB, Out> IntoChainSystem<ParamA, Payload, SystemB, ParamB, Out> for SystemA where
SystemA: IntoSystem<(), Payload, ParamA>,
SystemB: IntoSystem<Payload, Out, ParamB>,
impl<SystemA, ParamA, Payload, SystemB, ParamB, Out> IntoChainSystem<ParamA, Payload, SystemB, ParamB, Out> for SystemA where
SystemA: IntoSystem<(), Payload, ParamA>,
SystemB: IntoSystem<Payload, Out, ParamB>,
pub fn chain(
self,
system: SystemB
) -> ChainSystem<<SystemA as IntoSystem<(), Payload, ParamA>>::System, <SystemB as IntoSystem<Payload, Out, ParamB>>::System>
pub fn chain(
self,
system: SystemB
) -> ChainSystem<<SystemA as IntoSystem<(), Payload, ParamA>>::System, <SystemB as IntoSystem<Payload, Out, ParamB>>::System>
Chain this system A
with another system B
creating a new system that feeds system A’s
output into system B
, returning the output of system B
. Read more
impl<S, Param> IntoRunCriteria<(Box<dyn System<Out = ShouldRun, In = ()> + 'static, Global>, Param)> for S where
S: IntoSystem<(), ShouldRun, Param>,
impl<S, Param> IntoRunCriteria<(Box<dyn System<Out = ShouldRun, In = ()> + 'static, Global>, Param)> for S where
S: IntoSystem<(), ShouldRun, Param>,
pub fn into(self) -> RunCriteriaDescriptorOrLabel
impl<In, Out, Sys> IntoSystem<In, Out, AlreadyWasSystem> for Sys where
Sys: System<In = In, Out = Out>,
impl<In, Out, Sys> IntoSystem<In, Out, AlreadyWasSystem> for Sys where
Sys: System<In = In, Out = Out>,
impl<S, Param> RunCriteriaDescriptorCoercion<Param> for S where
S: IntoSystem<(), ShouldRun, Param>,
impl<S, Param> RunCriteriaDescriptorCoercion<Param> for S where
S: IntoSystem<(), ShouldRun, Param>,
pub fn label(self, label: impl RunCriteriaLabel) -> RunCriteriaDescriptor
pub fn label(self, label: impl RunCriteriaLabel) -> RunCriteriaDescriptor
Assigns a label to the criteria. Must be unique.
pub fn label_discard_if_duplicate(
self,
label: impl RunCriteriaLabel
) -> RunCriteriaDescriptor
pub fn label_discard_if_duplicate(
self,
label: impl RunCriteriaLabel
) -> RunCriteriaDescriptor
Assigns a label to the criteria. If the given label is already in use, this criteria will be discarded before initialization. Read more
pub fn before(self, label: impl RunCriteriaLabel) -> RunCriteriaDescriptor
pub fn before(self, label: impl RunCriteriaLabel) -> RunCriteriaDescriptor
Specifies that this criteria must be evaluated before a criteria with the given label.
pub fn after(self, label: impl RunCriteriaLabel) -> RunCriteriaDescriptor
pub fn after(self, label: impl RunCriteriaLabel) -> RunCriteriaDescriptor
Specifies that this criteria must be evaluated after a criteria with the given label.
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
pub fn vzip(self) -> V
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
where
S: Into<Dispatch>,
T: Future, type Output = <T as Future>::Output;
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more