Struct Scheduler 

pub struct Scheduler<W> {
    pub budget_warnings: u64,
    /* private fields */
}

The frame scheduler: runs registered systems in order, tracks frame time.

Fields

budget_warnings: u64

How many times the sustained-overrun warning has fired. Read by tests and the observability cross-cut (book T15).

Implementations

impl<W> Scheduler<W>

pub fn new() -> Self

pub fn with_budget_ns(budget_ns: u64) -> Self

Build a scheduler graded against a specific frame budget (ns).

pub fn add_system(&mut self, s: Box<dyn System<W>>)

pub fn budget_ms(&self) -> f32

The configured frame budget in ms.

pub fn system_timings(&self) -> &[(String, f32)]

Per-system wall time of the last frame, in run order: [(name, ms), ...]. Updated by every Scheduler::tick.

pub fn tick(&mut self, world: &mut W) -> f32

Run one frame. Returns the measured frame time in ms.

pub fn avg_frame_ms(&self) -> f32

Mean frame time over the last 60 frames, in ms.

Trait Implementations

impl<W> Default for Scheduler<W>

fn default() -> Self

Returns the “default value” for a type.