Struct SystemFn 

pub struct SystemFn<F, Params: Param> { /* private fields */ }

Concrete system wrapper produced by IntoSystem.

Stores the function, pre-resolved parameter state, and a diagnostic name. Users rarely name this type directly — use Box<dyn System> for type-erased storage, or let inference handle the concrete type.

Trait Implementations

impl<F: FnMut() -> bool + Send + 'static> System for SystemFn<F, ()>

fn run(&mut self, _world: &mut World) -> bool

Run this system. Returns true if downstream systems should run.

fn name(&self) -> &'static str

Returns the system’s name for diagnostics.

impl<F: Send + 'static, P0: Param + 'static> System for SystemFn<F, (P0,)>

where for<'a> &'a mut F: FnMut(P0) -> bool + FnMut(P0::Item<'a>) -> bool,

fn run(&mut self, world: &mut World) -> bool

Run this system. Returns true if downstream systems should run.

fn name(&self) -> &'static str

Returns the system’s name for diagnostics.

impl<F: Send + 'static, P0: Param + 'static, P1: Param + 'static> System for SystemFn<F, (P0, P1)>

where for<'a> &'a mut F: FnMut(P0, P1) -> bool + FnMut(P0::Item<'a>, P1::Item<'a>) -> bool,

fn run(&mut self, world: &mut World) -> bool

Run this system. Returns true if downstream systems should run.

fn name(&self) -> &'static str

Returns the system’s name for diagnostics.

impl<F: Send + 'static, P0: Param + 'static, P1: Param + 'static, P2: Param + 'static> System for SystemFn<F, (P0, P1, P2)>

where for<'a> &'a mut F: FnMut(P0, P1, P2) -> bool + FnMut(P0::Item<'a>, P1::Item<'a>, P2::Item<'a>) -> bool,

fn run(&mut self, world: &mut World) -> bool

Run this system. Returns true if downstream systems should run.

fn name(&self) -> &'static str

Returns the system’s name for diagnostics.

impl<F: Send + 'static, P0: Param + 'static, P1: Param + 'static, P2: Param + 'static, P3: Param + 'static> System for SystemFn<F, (P0, P1, P2, P3)>

where for<'a> &'a mut F: FnMut(P0, P1, P2, P3) -> bool + FnMut(P0::Item<'a>, P1::Item<'a>, P2::Item<'a>, P3::Item<'a>) -> bool,

fn run(&mut self, world: &mut World) -> bool

Run this system. Returns true if downstream systems should run.

fn name(&self) -> &'static str

Returns the system’s name for diagnostics.

impl<F: Send + 'static, P0: Param + 'static, P1: Param + 'static, P2: Param + 'static, P3: Param + 'static, P4: Param + 'static> System for SystemFn<F, (P0, P1, P2, P3, P4)>

where for<'a> &'a mut F: FnMut(P0, P1, P2, P3, P4) -> bool + FnMut(P0::Item<'a>, P1::Item<'a>, P2::Item<'a>, P3::Item<'a>, P4::Item<'a>) -> bool,

fn run(&mut self, world: &mut World) -> bool

Run this system. Returns true if downstream systems should run.

fn name(&self) -> &'static str

Returns the system’s name for diagnostics.

impl<F: Send + 'static, P0: Param + 'static, P1: Param + 'static, P2: Param + 'static, P3: Param + 'static, P4: Param + 'static, P5: Param + 'static> System for SystemFn<F, (P0, P1, P2, P3, P4, P5)>

where for<'a> &'a mut F: FnMut(P0, P1, P2, P3, P4, P5) -> bool + FnMut(P0::Item<'a>, P1::Item<'a>, P2::Item<'a>, P3::Item<'a>, P4::Item<'a>, P5::Item<'a>) -> bool,

fn run(&mut self, world: &mut World) -> bool

Run this system. Returns true if downstream systems should run.

fn name(&self) -> &'static str

Returns the system’s name for diagnostics.

impl<F: Send + 'static, P0: Param + 'static, P1: Param + 'static, P2: Param + 'static, P3: Param + 'static, P4: Param + 'static, P5: Param + 'static, P6: Param + 'static> System for SystemFn<F, (P0, P1, P2, P3, P4, P5, P6)>

where for<'a> &'a mut F: FnMut(P0, P1, P2, P3, P4, P5, P6) -> bool + FnMut(P0::Item<'a>, P1::Item<'a>, P2::Item<'a>, P3::Item<'a>, P4::Item<'a>, P5::Item<'a>, P6::Item<'a>) -> bool,

fn run(&mut self, world: &mut World) -> bool

Run this system. Returns true if downstream systems should run.

fn name(&self) -> &'static str

Returns the system’s name for diagnostics.

impl<F: Send + 'static, P0: Param + 'static, P1: Param + 'static, P2: Param + 'static, P3: Param + 'static, P4: Param + 'static, P5: Param + 'static, P6: Param + 'static, P7: Param + 'static> System for SystemFn<F, (P0, P1, P2, P3, P4, P5, P6, P7)>

where for<'a> &'a mut F: FnMut(P0, P1, P2, P3, P4, P5, P6, P7) -> bool + FnMut(P0::Item<'a>, P1::Item<'a>, P2::Item<'a>, P3::Item<'a>, P4::Item<'a>, P5::Item<'a>, P6::Item<'a>, P7::Item<'a>) -> bool,

fn run(&mut self, world: &mut World) -> bool

Run this system. Returns true if downstream systems should run.

fn name(&self) -> &'static str

Returns the system’s name for diagnostics.