Struct SystemConfig 

pub struct SystemConfig<S, Params> { /* private fields */ }

A system bundled with .after(...)/.before(...) ordering constraints and a .priority(...), produced by IntoSystemConfig and consumed by Schedule::add_system.

Implementations

impl<S, Params> SystemConfig<S, Params>

where S: IntoSystem<Params> + 'static,

pub fn after<S2, P2>(self, _other: S2) -> Self

where S2: IntoSystem<P2> + 'static,

Adds a constraint that this system must run after other. other need not be added to the schedule yet — only its type is used, to look it up when the schedule’s order is next computed.

pub fn before<S2, P2>(self, _other: S2) -> Self

where S2: IntoSystem<P2> + 'static,

Adds a constraint that this system must run before other. other need not be added to the schedule yet — only its type is used, to look it up when the schedule’s order is next computed.

pub fn priority(self, priority: i32) -> Self

Sets this system’s priority, used to break ties between systems that have no after/before relationship to each other — higher runs first. Defaults to 0. An explicit after/before constraint always takes precedence over priority: priority only decides ordering between systems the schedule would otherwise be free to run in any order.

Trait Implementations

impl<S, Params> From<S> for SystemConfig<S, Params>

where S: IntoSystem<Params> + 'static,

A bare system is trivially “configured” with no ordering constraints and priority 0 — this is what lets Schedule::add_system accept either a plain system or one built via .after(...)/.before(...)/.priority(...).

fn from(system: S) -> Self

Converts to this type from the input type.