Struct SystemDeltaTimer 

pub struct SystemDeltaTimer<'w, 's> { /* private fields */ }

👎Deprecated:

Use PhysicsDelta instead

SystemParam to keep track of an independent delta time

Not every system runs on a Bevy update and Bevy can be updated multiple during a “frame”.

Implementations

impl<'w, 's> SystemDeltaTimer<'w, 's>

pub fn delta(&mut self) -> Duration

Returns the time passed since the last invocation

pub fn delta_seconds(&mut self) -> f32

pub fn delta_seconds_f64(&mut self) -> f64

Trait Implementations

impl<'w, 's> ReadOnlySystemParam for SystemDeltaTimer<'w, 's>

where Local<'s, Option<Instant>>: ReadOnlySystemParam, PhantomData<&'w ()>: ReadOnlySystemParam,

impl SystemParam for SystemDeltaTimer<'_, '_>

type State = FetchState

Used to store data which persists across invocations of a system.

type Item<'w, 's> = SystemDeltaTimer<'w, 's>

The item type returned when constructing this system param. The value of this associated type should be Self, instantiated with new lifetimes.

fn init_state(world: &mut World) -> Self::State

Creates a new instance of this param’s State.

fn init_access( state: &Self::State, system_meta: &mut SystemMeta, component_access_set: &mut FilteredAccessSet, world: &mut World, )

Registers any World access used by this SystemParam

fn apply(state: &mut Self::State, system_meta: &SystemMeta, world: &mut World)

Applies any deferred mutations stored in this SystemParam’s state. This is used to apply Commands during ApplyDeferred.

fn queue( state: &mut Self::State, system_meta: &SystemMeta, world: DeferredWorld<'_>, )

Queues any deferred mutations to be applied at the next ApplyDeferred.

unsafe fn validate_param<'w, 's>( state: &'s mut Self::State, _system_meta: &SystemMeta, _world: UnsafeWorldCell<'w>, ) -> Result<(), SystemParamValidationError>

Validates that the param can be acquired by the get_param.

unsafe fn get_param<'w, 's>( state: &'s mut Self::State, system_meta: &SystemMeta, world: UnsafeWorldCell<'w>, change_tick: Tick, ) -> Self::Item<'w, 's>

Creates a parameter to be passed into a SystemParamFunction.