Struct bevy::ecs::system::ParallelCommands
pub struct ParallelCommands<'w, 's> { /* private fields */ }
Expand description
An alternative to Commands
that can be used in parallel contexts, such as those in Query::par_for_each
Note: Because command application order will depend on how many threads are ran, non-commutative commands may result in non-deterministic results.
Example:
fn parallel_command_system(
mut query: Query<(Entity, &Velocity)>,
par_commands: ParallelCommands
) {
query.par_for_each(32, |(entity, velocity)| {
if velocity.magnitude() > 10.0 {
par_commands.command_scope(|mut commands| {
commands.entity(entity).despawn();
});
}
});
}
Implementations
impl<'w, 's> ParallelCommands<'w, 's>
impl<'w, 's> ParallelCommands<'w, 's>
pub fn command_scope<R>(&self, f: impl FnOnce(Commands<'_, '_>) -> R) -> R
Trait Implementations
impl SystemParam for ParallelCommands<'_, '_>
impl SystemParam for ParallelCommands<'_, '_>
type Fetch = ParallelCommandsState
Auto Trait Implementations
impl<'w, 's> RefUnwindSafe for ParallelCommands<'w, 's>
impl<'w, 's> Send for ParallelCommands<'w, 's>
impl<'w, 's> Sync for ParallelCommands<'w, 's>
impl<'w, 's> Unpin for ParallelCommands<'w, 's>
impl<'w, 's> !UnwindSafe for ParallelCommands<'w, 's>
Blanket Implementations
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