fn extract_render_asset<A: RenderAsset>(
    mut commands: Commands,
    mut events: EventReader<AssetEvent<A>>,
    assets: Res<Assets<A>>,
) {
    let mut changed_assets = HashSet::default();
    let mut removed = Vec::new();
    for event in events.iter() {
        match event {
            AssetEvent::Created { handle } => {
                changed_assets.insert(handle);
            }
            AssetEvent::Modified { handle } => {
                changed_assets.insert(handle);
            }
            AssetEvent::Removed { handle } => {
                changed_assets.remove(handle);
                removed.push(handle.clone_weak());
            }
        }
    }

    let mut extracted_assets = Vec::new();
    for handle in changed_assets.drain() {
        if let Some(asset) = assets.get(handle) {
            extracted_assets.push((handle.clone_weak(), asset.extract_asset()));
        }
    }

    commands.insert_resource(ExtractedAssets {
        extracted: extracted_assets,
        removed,
    })
}
/// This system extracts all crated or modified assets of the corresponding [`RenderAsset`] type
/// into the "render world".
This system extracts all crated or modified assets of the corresponding [`RenderAsset`] type
into the "render world".
This system extracts all crated or modified assets of the corresponding [ ` RenderAsset ` ] type into the " render world " .
fn extract_render_asset<A: RenderAsset>(
    mut commands: Commands,
    mut events: EventReader<AssetEvent<A>>,
    assets: Res<Assets<A>>,
) {
    let mut changed_assets = HashSet::default();
    let mut removed = Vec::new();
    for event in events.iter() {
        match event {
            AssetEvent::Created { handle } => {
                changed_assets.insert(handle);
            }
            AssetEvent::Modified { handle } => {
                changed_assets.insert(handle);
            }
            AssetEvent::Removed { handle } => {
                changed_assets.remove(handle);
                removed.push(handle.clone_weak());
            }
        }
    }
    let mut extracted_assets = Vec::new();
    for handle in changed_assets.drain() {
        if let Some(asset) = assets.get(handle) {
            extracted_assets.push((handle.clone_weak(), asset.extract_asset()));
        }
    }
    commands.insert_resource(ExtractedAssets {
        extracted: extracted_assets,
        removed,
    })
}
fn extract_render_asset < A : RenderAsset > ( mut commands : Commands , mut events : EventReader < AssetEvent < A > > , assets : Res < Assets < A > > , ) { let mut changed_assets = HashSet :: default ( ) ; let mut removed = Vec :: new ( ) ; for event in events . iter ( ) { match event { AssetEvent :: Created { handle } => { changed_assets . insert ( handle ) ; } AssetEvent :: Modified { handle } => { changed_assets . insert ( handle ) ; } AssetEvent :: Removed { handle } => { changed_assets . remove ( handle ) ; removed . push ( handle . clone_weak ( ) ) ; } } } let mut extracted_assets = Vec :: new ( ) ; for handle in changed_assets . drain ( ) { if let Some ( asset ) = assets . get ( handle ) { extracted_assets . push ( ( handle . clone_weak ( ) , asset . extract_asset ( ) ) ) ; } } commands . insert_resource ( ExtractedAssets { extracted : extracted_assets , removed , } ) }
This system extracts all crated or modified assets of the corresponding [`RenderAsset`] type
into the "render world".
This system extracts all crated or modified assets of the corresponding [ ` RenderAsset ` ] type into the " render world " .
commands
Commands
events
EventReader<AssetEvent<A>>
assets
Res<Assets<A>>
commands
Commands
events
EventReader<AssetEvent<A>>
assets
Res<Assets<A>>