Struct Tick 

pub struct Tick {
    pub now: Instant,
    pub dt: Duration,
    pub frame: u64,
}

Per-tick frame clock resource.

• Self::now is captured at the start of each crate::app::App::tick before the TickStage::Input systems run.
• Self::dt is now - previous_now (zero on the first tick).
• Self::frame is a monotonic counter incremented once per tick (starts at 0; reaches 1 on the first tick).

Wave 1 migrates the animation primitives off std::time::Instant::now() to read this resource so headless tests can drive deterministic frame clocks; foundation only installs and updates the resource.

Fields

now: Instant

Wall-clock instant captured at the start of the current tick.

dt: Duration

Elapsed time since the previous tick’s Self::now. Zero on the first tick.

frame: u64

Monotonic tick counter; 0 before the first tick, 1 after, and so on.

Implementations

impl Tick

pub fn advance(&mut self)

Advances the clock by capturing a fresh Instant::now() and bumping Self::frame. Called by crate::app::App::tick at the top of each tick, before the main schedule runs.

Trait Implementations

impl Clone for Tick

fn clone(&self) -> Tick

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Component for Tick

where Self: Send + Sync + 'static,

const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::SparseSet

A constant indicating the storage type used for this component.

type Mutability = Mutable

A marker type to assist Bevy with determining if this component is mutable, or immutable. Mutable components will have Component<Mutability = Mutable>, while immutable components will instead have Component<Mutability = Immutable>.

fn register_required_components( _requiree: ComponentId, required_components: &mut RequiredComponentsRegistrator<'_, '_>, )

Registers required components.

fn clone_behavior() -> ComponentCloneBehavior

Called when registering this component, allowing to override clone function (or disable cloning altogether) for this component.

fn relationship_accessor() -> Option<ComponentRelationshipAccessor<Self>>

Returns [ComponentRelationshipAccessor] required for working with relationships in dynamic contexts.

fn on_add() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_add [ComponentHook] for this Component if one is defined.

fn on_insert() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_insert [ComponentHook] for this Component if one is defined.

fn on_discard() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_discard [ComponentHook] for this Component if one is defined.

fn on_remove() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_remove [ComponentHook] for this Component if one is defined.

fn on_despawn() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_despawn [ComponentHook] for this Component if one is defined.

fn map_entities<E>(_this: &mut Self, _mapper: &mut E)

where E: EntityMapper,

Maps the entities on this component using the given EntityMapper. This is used to remap entities in contexts like scenes and entity cloning. When deriving Component, this is populated by annotating fields containing entities with #[entities]

impl Debug for Tick

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

Formats the value using the given formatter.

impl Default for Tick

fn default() -> Self

Returns the “default value” for a type.

impl Copy for Tick

impl Resource for Tick

where Self: Send + Sync + 'static,