Struct bevy::time::prelude::Timer

source ·
pub struct Timer { /* private fields */ }
Expand description

Tracks elapsed time. Enters the finished state once duration is reached.

Non repeating timers will stop tracking and stay in the finished state until reset. Repeating timers will only be in the finished state on each tick duration is reached or exceeded, and can still be reset at any given point.

Paused timers will not have elapsed time increased.

Implementations§

source§

impl Timer

source

pub fn new(duration: Duration, mode: TimerMode) -> Timer

Creates a new timer with a given duration.

See also Timer::from_seconds.

source

pub fn from_seconds(duration: f32, mode: TimerMode) -> Timer

Creates a new timer with a given duration in seconds.

Example
let mut timer = Timer::from_seconds(1.0, TimerMode::Once);
source

pub fn finished(&self) -> bool

Returns true if the timer has reached its duration.

For repeating timers, this method behaves identically to Timer::just_finished.

Examples
use std::time::Duration;

let mut timer_once = Timer::from_seconds(1.0, TimerMode::Once);
timer_once.tick(Duration::from_secs_f32(1.5));
assert!(timer_once.finished());
timer_once.tick(Duration::from_secs_f32(0.5));
assert!(timer_once.finished());

let mut timer_repeating = Timer::from_seconds(1.0, TimerMode::Repeating);
timer_repeating.tick(Duration::from_secs_f32(1.1));
assert!(timer_repeating.finished());
timer_repeating.tick(Duration::from_secs_f32(0.8));
assert!(!timer_repeating.finished());
timer_repeating.tick(Duration::from_secs_f32(0.6));
assert!(timer_repeating.finished());
source

pub fn just_finished(&self) -> bool

Returns true only on the tick the timer reached its duration.

Examples
use std::time::Duration;
let mut timer = Timer::from_seconds(1.0, TimerMode::Once);
timer.tick(Duration::from_secs_f32(1.5));
assert!(timer.just_finished());
timer.tick(Duration::from_secs_f32(0.5));
assert!(!timer.just_finished());
source

pub fn elapsed(&self) -> Duration

Returns the time elapsed on the timer. Guaranteed to be between 0.0 and duration. Will only equal duration when the timer is finished and non repeating.

See also Stopwatch::elapsed.

Examples
use std::time::Duration;
let mut timer = Timer::from_seconds(1.0, TimerMode::Once);
timer.tick(Duration::from_secs_f32(0.5));
assert_eq!(timer.elapsed(), Duration::from_secs_f32(0.5));
source

pub fn elapsed_secs(&self) -> f32

Returns the time elapsed on the timer as an f32. See also Timer::elapsed.

source

pub fn set_elapsed(&mut self, time: Duration)

Sets the elapsed time of the timer without any other considerations.

See also Stopwatch::set.

use std::time::Duration;
let mut timer = Timer::from_seconds(1.0, TimerMode::Once);
timer.set_elapsed(Duration::from_secs(2));
assert_eq!(timer.elapsed(), Duration::from_secs(2));
// the timer is not finished even if the elapsed time is greater than the duration.
assert!(!timer.finished());
source

pub fn duration(&self) -> Duration

Returns the duration of the timer.

Examples
use std::time::Duration;
let timer = Timer::new(Duration::from_secs(1), TimerMode::Once);
assert_eq!(timer.duration(), Duration::from_secs(1));
source

pub fn set_duration(&mut self, duration: Duration)

Sets the duration of the timer.

Examples
use std::time::Duration;
let mut timer = Timer::from_seconds(1.5, TimerMode::Once);
timer.set_duration(Duration::from_secs(1));
assert_eq!(timer.duration(), Duration::from_secs(1));
source

pub fn mode(&self) -> TimerMode

Returns the mode of the timer.

Examples
let mut timer = Timer::from_seconds(1.0, TimerMode::Repeating);
assert_eq!(timer.mode(), TimerMode::Repeating);
source

pub fn set_mode(&mut self, mode: TimerMode)

Sets the mode of the timer.

Examples
let mut timer = Timer::from_seconds(1.0, TimerMode::Repeating);
timer.set_mode(TimerMode::Once);
assert_eq!(timer.mode(), TimerMode::Once);
source

pub fn tick(&mut self, delta: Duration) -> &Timer

Advance the timer by delta seconds. Non repeating timer will clamp at duration. Repeating timer will wrap around. Will not affect paused timers.

See also Stopwatch::tick.

Examples
use std::time::Duration;
let mut timer = Timer::from_seconds(1.0, TimerMode::Once);
let mut repeating = Timer::from_seconds(1.0, TimerMode::Repeating);
timer.tick(Duration::from_secs_f32(1.5));
repeating.tick(Duration::from_secs_f32(1.5));
assert_eq!(timer.elapsed_secs(), 1.0);
assert_eq!(repeating.elapsed_secs(), 0.5);
source

pub fn pause(&mut self)

Pauses the Timer. Disables the ticking of the timer.

See also Stopwatch::pause.

Examples
use std::time::Duration;
let mut timer = Timer::from_seconds(1.0, TimerMode::Once);
timer.pause();
timer.tick(Duration::from_secs_f32(0.5));
assert_eq!(timer.elapsed_secs(), 0.0);
source

pub fn unpause(&mut self)

Unpauses the Timer. Resumes the ticking of the timer.

See also Stopwatch::unpause().

Examples
use std::time::Duration;
let mut timer = Timer::from_seconds(1.0, TimerMode::Once);
timer.pause();
timer.tick(Duration::from_secs_f32(0.5));
timer.unpause();
timer.tick(Duration::from_secs_f32(0.5));
assert_eq!(timer.elapsed_secs(), 0.5);
source

pub fn paused(&self) -> bool

Returns true if the timer is paused.

See also Stopwatch::paused.

Examples
let mut timer = Timer::from_seconds(1.0, TimerMode::Once);
assert!(!timer.paused());
timer.pause();
assert!(timer.paused());
timer.unpause();
assert!(!timer.paused());
source

pub fn reset(&mut self)

Resets the timer. The reset doesn’t affect the paused state of the timer.

See also Stopwatch::reset.

Examples

use std::time::Duration;
let mut timer = Timer::from_seconds(1.0, TimerMode::Once);
timer.tick(Duration::from_secs_f32(1.5));
timer.reset();
assert!(!timer.finished());
assert!(!timer.just_finished());
assert_eq!(timer.elapsed_secs(), 0.0);
source

pub fn fraction(&self) -> f32

Returns the fraction of the timer elapsed time (goes from 0.0 to 1.0).

Examples
use std::time::Duration;
let mut timer = Timer::from_seconds(2.0, TimerMode::Once);
timer.tick(Duration::from_secs_f32(0.5));
assert_eq!(timer.fraction(), 0.25);
source

pub fn fraction_remaining(&self) -> f32

Returns the fraction of the timer remaining time (goes from 1.0 to 0.0).

Examples
use std::time::Duration;
let mut timer = Timer::from_seconds(2.0, TimerMode::Once);
timer.tick(Duration::from_secs_f32(0.5));
assert_eq!(timer.fraction_remaining(), 0.75);
source

pub fn remaining_secs(&self) -> f32

Returns the remaining time in seconds

Examples
use std::cmp::Ordering;
use std::time::Duration;
let mut timer = Timer::from_seconds(2.0, TimerMode::Once);
timer.tick(Duration::from_secs_f32(0.5));
let result = timer.remaining_secs().total_cmp(&1.5);
assert_eq!(Ordering::Equal, result);
source

pub fn remaining(&self) -> Duration

Returns the remaining time using Duration

Examples
use std::time::Duration;
let mut timer = Timer::from_seconds(2.0, TimerMode::Once);
timer.tick(Duration::from_secs_f32(0.5));
assert_eq!(timer.remaining(), Duration::from_secs_f32(1.5));
source

pub fn times_finished_this_tick(&self) -> u32

Returns the number of times a repeating timer finished during the last tick call.

For non repeating-timers, this method will only ever return 0 or 1.

Examples
use std::time::Duration;
let mut timer = Timer::from_seconds(1.0, TimerMode::Repeating);
timer.tick(Duration::from_secs_f32(6.0));
assert_eq!(timer.times_finished_this_tick(), 6);
timer.tick(Duration::from_secs_f32(2.0));
assert_eq!(timer.times_finished_this_tick(), 2);
timer.tick(Duration::from_secs_f32(0.5));
assert_eq!(timer.times_finished_this_tick(), 0);

Trait Implementations§

source§

impl Clone for Timer

source§

fn clone(&self) -> Timer

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl Debug for Timer

source§

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

Formats the value using the given formatter. Read more
source§

impl Default for Timer

source§

fn default() -> Timer

Returns the “default value” for a type. Read more
source§

impl FromReflect for Timer

source§

fn from_reflect(reflect: &(dyn Reflect + 'static)) -> Option<Timer>

Constructs a concrete instance of Self from a reflected value.
source§

fn take_from_reflect( reflect: Box<dyn Reflect> ) -> Result<Self, Box<dyn Reflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails. Read more
source§

impl GetTypeRegistration for Timer

source§

impl PartialEq for Timer

source§

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

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl Reflect for Timer

source§

fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value. Read more
source§

fn into_any(self: Box<Timer>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.
source§

fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.
source§

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.
source§

fn into_reflect(self: Box<Timer>) -> Box<dyn Reflect>

Casts this type to a boxed reflected value.
source§

fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a reflected value.
source§

fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable reflected value.
source§

fn clone_value(&self) -> Box<dyn Reflect>

Clones the value as a Reflect trait object. Read more
source§

fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value. Read more
source§

fn apply(&mut self, value: &(dyn Reflect + 'static))

Applies a reflected value to this value. Read more
source§

fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type. Read more
source§

fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type. Read more
source§

fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type. Read more
source§

fn reflect_owned(self: Box<Timer>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type. Read more
source§

fn reflect_partial_eq(&self, value: &(dyn Reflect + 'static)) -> Option<bool>

Returns a “partial equality” comparison result. Read more
source§

fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type). Read more
source§

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

Debug formatter for the value. Read more
source§

fn serializable(&self) -> Option<Serializable<'_>>

Returns a serializable version of the value. Read more
source§

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type. Read more
source§

impl Struct for Timer

source§

fn field(&self, name: &str) -> Option<&(dyn Reflect + 'static)>

Returns a reference to the value of the field named name as a &dyn Reflect.
source§

fn field_mut(&mut self, name: &str) -> Option<&mut (dyn Reflect + 'static)>

Returns a mutable reference to the value of the field named name as a &mut dyn Reflect.
source§

fn field_at(&self, index: usize) -> Option<&(dyn Reflect + 'static)>

Returns a reference to the value of the field with index index as a &dyn Reflect.
source§

fn field_at_mut(&mut self, index: usize) -> Option<&mut (dyn Reflect + 'static)>

Returns a mutable reference to the value of the field with index index as a &mut dyn Reflect.
source§

fn name_at(&self, index: usize) -> Option<&str>

Returns the name of the field with index index.
source§

fn field_len(&self) -> usize

Returns the number of fields in the struct.
source§

fn iter_fields(&self) -> FieldIter<'_>

Returns an iterator over the values of the reflectable fields for this struct.
source§

fn clone_dynamic(&self) -> DynamicStruct

Clones the struct into a DynamicStruct.
source§

impl TypePath for Timer
where Timer: Any + Send + Sync,

source§

fn type_path() -> &'static str

Returns the fully qualified path of the underlying type. Read more
source§

fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type. Read more
source§

fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous. Read more
source§

fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous. Read more
source§

fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous. Read more
source§

impl Typed for Timer

source§

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.
source§

impl Eq for Timer

source§

impl StructuralEq for Timer

source§

impl StructuralPartialEq for Timer

Auto Trait Implementations§

§

impl RefUnwindSafe for Timer

§

impl Send for Timer

§

impl Sync for Timer

§

impl Unpin for Timer

§

impl UnwindSafe for Timer

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T, U> AsBindGroupShaderType<U> for T
where U: ShaderType, &'a T: for<'a> Into<U>,

source§

fn as_bind_group_shader_type(&self, _images: &RenderAssets<Image>) -> U

Return the T ShaderType for self. When used in AsBindGroup derives, it is safe to assume that all images in self exist.
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> Downcast<T> for T

source§

fn downcast(&self) -> &T

source§

impl<T> Downcast for T
where T: Any,

source§

fn into_any(self: Box<T>) -> Box<dyn Any>

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.
source§

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
source§

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.
source§

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.
source§

impl<T> DowncastSync for T
where T: Any + Send + Sync,

source§

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
source§

impl<T> DynEq for T
where T: Any + Eq,

source§

fn as_any(&self) -> &(dyn Any + 'static)

Casts the type to dyn Any.
source§

fn dyn_eq(&self, other: &(dyn DynEq + 'static)) -> bool

This method tests for self and other values to be equal. Read more
source§

impl<T> DynamicTypePath for T
where T: TypePath,

source§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

source§

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
source§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

source§

fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<S> FromSample<S> for S

source§

fn from_sample_(s: S) -> S

source§

impl<T> FromWorld for T
where T: Default,

source§

fn from_world(_world: &mut World) -> T

Creates Self using data from the given World.
source§

impl<S> GetField for S
where S: Struct,

source§

fn get_field<T>(&self, name: &str) -> Option<&T>
where T: Reflect,

Returns a reference to the value of the field named name, downcast to T.
source§

fn get_field_mut<T>(&mut self, name: &str) -> Option<&mut T>
where T: Reflect,

Returns a mutable reference to the value of the field named name, downcast to T.
source§

impl<T> GetPath for T
where T: Reflect + ?Sized,

source§

fn reflect_path<'p>( &self, path: impl ReflectPath<'p> ) -> Result<&(dyn Reflect + 'static), ReflectPathError<'p>>

Returns a reference to the value specified by path. Read more
source§

fn reflect_path_mut<'p>( &mut self, path: impl ReflectPath<'p> ) -> Result<&mut (dyn Reflect + 'static), ReflectPathError<'p>>

Returns a mutable reference to the value specified by path. Read more
source§

fn path<'p, T>( &self, path: impl ReflectPath<'p> ) -> Result<&T, ReflectPathError<'p>>
where T: Reflect,

Returns a statically typed reference to the value specified by path. Read more
source§

fn path_mut<'p, T>( &mut self, path: impl ReflectPath<'p> ) -> Result<&mut T, ReflectPathError<'p>>
where T: Reflect,

Returns a statically typed mutable reference to the value specified by path. Read more
source§

impl<T> Instrument for T

source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> ToOwned for T
where T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> ToSample<U> for T
where U: FromSample<T>,

source§

fn to_sample_(self) -> U

source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<T> TypeData for T
where T: 'static + Send + Sync + Clone,

source§

impl<T> Upcast<T> for T

source§

fn upcast(&self) -> Option<&T>

source§

impl<T> WithSubscriber for T

source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

impl<S, T> Duplex<S> for T
where T: FromSample<S> + ToSample<S>,

source§

impl<T> Settings for T
where T: 'static + Send + Sync,

source§

impl<T> WasmNotSend for T
where T: Send,

source§

impl<T> WasmNotSendSync for T

source§

impl<T> WasmNotSync for T
where T: Sync,