[−]Trait oxygengine_core::ecs::prelude::System

pub trait System<'a> {
type SystemData: DynamicSystemData<'a>;
    fn run(&mut self, data: Self::SystemData);

    fn running_time(&self) -> RunningTime { ... }

    fn accessor(&'b self) -> AccessorCow<'a, 'b, Self> { ... }

    fn setup(&mut self, res: &mut Resources) { ... }

    fn dispose(self, res: &mut Resources) { ... }
}

A System, executed with a set of required Resources.

Associated Types

type SystemData: DynamicSystemData<'a>

The resource bundle required to execute this system.

You will mostly use a tuple of system data (which also implements SystemData). You can also create such a resource bundle by simply deriving SystemData for a struct.

Every SystemData is also a DynamicSystemData.

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Required methods

fn run(&mut self, data: Self::SystemData)

Executes the system with the required system data.

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Provided methods

fn running_time(&self) -> RunningTime

Returns a hint how long the system needs for running. This is used to optimize the way they're executed (might allow more parallelization).

Defaults to RunningTime::Average.

fn accessor(&'b self) -> AccessorCow<'a, 'b, Self>

Return the accessor from the SystemData.

fn setup(&mut self, res: &mut Resources)

Sets up the Resources using Self::SystemData::setup.

fn dispose(self, res: &mut Resources)

Performs clean up that requires resources from the Resources.

This commonly removes components from Resources which depend on external resources.

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Implementations on Foreign Types

impl<'a, P> System<'a> for HierarchySystem<P> where
    P: Component + Parent + Send + Sync + 'static,
    <P as Component>::Storage: Tracked, [src]

type SystemData = (ParentData<'a, P>, Write<'a, Hierarchy<P>, HierarchySetupHandler<P>>)

fn running_time(&self) -> RunningTime

fn accessor(&'b self) -> AccessorCow<'a, 'b, Self>

fn setup(&mut self, res: &mut Resources)

fn dispose(self, res: &mut Resources)

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Implementors

impl<'s> System<'s> for AssetsSystem[src]

type SystemData = Option<Write<'s, AssetsDatabase>>

fn running_time(&self) -> RunningTime

fn accessor(&'b self) -> AccessorCow<'a, 'b, Self>

fn setup(&mut self, res: &mut Resources)

fn dispose(self, res: &mut Resources)

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