audionimbus 0.14.0

A safe wrapper around Steam Audio that provides spatial audio capabilities with realistic occlusion, reverb, and HRTF effects, accounting for physical attributes and scene geometry.
Documentation 
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//! Direct simulation runner.

use super::super::configuration::SimulationConfiguration;
use super::super::error::{SimulationErrorEvent, SimulationErrorSender};
use super::super::simulation::{Simulation, SimulationSharedInputs, SimulationThread};
use super::super::system_set::SpatialAudioSet;
use super::{Runner, Spawn, SyncFrame, ToRunner};
use crate::sealed::Sealed;
use crate::simulation::{Direct, PathingCompatible, ReflectionsCompatible};
use crate::wiring::{DirectFrame, SimulationStepError};
use bevy::prelude::{
    App, Entity, IntoScheduleConfigs, PostUpdate, Res, Resource, World, resource_exists,
};
use std::ops::{Deref, DerefMut};

/// Runner for direct (occlusion, attenuation) simulation.
pub struct RunnerDirect;

impl Sealed for RunnerDirect {}
impl Runner for RunnerDirect {
    type SimulationType = Direct;
}

impl ToRunner for Direct {
    type Runner = RunnerDirect;
}

impl<C> Spawn<C> for RunnerDirect
where
    C: SimulationConfiguration<Direct = Direct>,
    (): ReflectionsCompatible<<C as SimulationConfiguration>::Reflections>
        + PathingCompatible<<C as SimulationConfiguration>::Pathing>,
{
    fn spawn(world: &mut World) {
        let error_sender = world.resource::<SimulationErrorSender>().0.clone();

        let runner = world.resource_mut::<Simulation<C>>().spawn_direct(
            move |error: SimulationStepError| {
                let _ = error_sender.try_send(SimulationErrorEvent {
                    thread: SimulationThread::Direct,
                    error,
                });
            },
        );

        world.insert_resource(DirectSimulation::<C>(runner));
    }
}

impl<C> SyncFrame<C> for RunnerDirect
where
    C: SimulationConfiguration<Direct = Direct>,
{
    fn add_systems(app: &mut App) {
        app.add_systems(
            PostUpdate,
            sync_direct_frame::<C>
                .run_if(resource_exists::<DirectSimulation<C>>)
                .in_set(SpatialAudioSet::SyncFrames),
        );
    }
}

/// Publishes a new frame to the direct simulation thread.
fn sync_direct_frame<C>(
    simulation: Res<Simulation<C>>,
    direct: Res<DirectSimulation<C>>,
    shared_inputs: Res<SimulationSharedInputs<C>>,
) where
    C: SimulationConfiguration<Direct = Direct>,
{
    direct.set_input(DirectFrame {
        sources: simulation.sources.clone(),
        shared_inputs: shared_inputs.0.clone(),
    });
}

/// Resource wrapping a [`wiring::DirectSimulation`](crate::wiring::DirectSimulation).
#[derive(Resource)]
pub struct DirectSimulation<C: SimulationConfiguration>(
    pub crate::wiring::DirectSimulation<Entity, C::Reflections, C::Pathing, C::ReflectionEffect>,
);

impl<C: SimulationConfiguration> Deref for DirectSimulation<C> {
    type Target =
        crate::wiring::DirectSimulation<Entity, C::Reflections, C::Pathing, C::ReflectionEffect>;
    fn deref(&self) -> &Self::Target {
        &self.0
    }
}

impl<C: SimulationConfiguration> DerefMut for DirectSimulation<C> {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.0
    }
}