Trait specs::System[−][src]

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) { ... }
}

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.

Required Methods

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

Executes the system with the required system data.

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.

Implementors

impl<'a, T, F> System<'a> for Merge<F> where
    T: Component + Send + Sync + 'static,
    F: Future<Item = T, Error = BoxedErr> + Component + Send + Sync,   type SystemData = (Entities<'a>, Read<'a, Errors>, WriteStorage<'a, F>, WriteStorage<'a, T>);

[src]