Macro bevy_defer::async_system

macro_rules! async_system {
    (|$($field: ident : $ty: ty),* $(,)?| $body: expr) => { ... };
}

Construct an async system via the AsyncEntityParam abstraction.

Syntax

• Expects an async closure with AsyncEntityParams as parameters and returns ().
• ? can be used to propagate AccessErrors.
• Most of this crate’s AsyncEntityParams, like Sender, Receiver and AsyncComponent are automatically imported and may shadow external names.

Example

// Set scale based on received position
let system = async_system!(|recv: Receiver<PositionChanged>, transform: AsyncComponent<Transform>|{
    let pos: Vec3 = recv.recv().await;
    transform.set(|transform| transform.scale = pos).await?;
})