6mo ago

Remote triggers

Implement remote triggers by Shatur · Pull Request #398 · projectharmonia/bevy_replicon

Spend last week working on remote triggers for bevy_replicon.

Tried many approaches and finally satisfied with the implementation and public API.

Client triggers example:

 rust

    
app.add_client_trigger::<DummyEvent>(ChannelKind::Ordered)
    .add_observer(receive_events)
    .add_systems(Update, send_events.run_if(client_connected));

fn send_events(mut commands: Commands) {
    commands.client_trigger(DummyEvent);
}

fn receive_events(trigger: Trigger<FromClient<DummyEvent>>) {
    let FromClient { client_id, event } = trigger.event();
    info!("received event {event:?} from {client_id:?}");
}

Server triggers example:

 rust

    
app.add_server_trigger::<DummyEvent>(ChannelKind::Ordered)
    .add_observer(receive_events)
    .add_systems(Update, send_events.run_if(server_running));

fn send_events(mut commands: Commands) {
    commands.server_trigger(ToClients {
        mode: SendMode::Broadcast,
        event: DummyEvent,
    });
}

fn receive_events(trigger: Trigger<DummyEvent>) {
    info!("received event {:?} from server", trigger.event());
}

Observers are so nice, I use them in my game a lot and not having them networked was quite limiting.