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Fix example send_and_receive_events (#11615)

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# Objective

- Example `send_and_receive_events` added in #11574 panics
```
thread 'Compute Task Pool (3)' panicked at bevy/crates/bevy_ecs/src/system/system_param.rs:570:17:
Resource requested by send_and_receive_events::read_and_write_different_event_types does not exist: bevy_ecs::event::Events<send_and_receive_events::A>
Encountered a panic in system `send_and_receive_events::read_and_write_different_event_types`!
Encountered a panic in system `bevy_app::main_schedule::Main::run_main`!
```

## Solution

- Register the events used in the system
- Don't use logger as it's not setup with `MinimalPlugins`, just print

---------

Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Kanabenki <lucien.menassol@gmail.com>
This commit is contained in:
François 2024-01-30 15:49:40 +01:00 committed by GitHub
parent df761af49b
commit 3049d8f0da
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GPG key ID: B5690EEEBB952194
1 changed files with 5 additions and 3 deletions
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8
examples/ecs/send_and_receive_events.rs
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@ -27,6 +27,8 @@ fn main() {
let mut app = App::new();
app.add_plugins(MinimalPlugins)
.add_event::<DebugEvent>()
.add_event::<A>()
.add_event::<B>()
.add_systems(Update, read_and_write_different_event_types)
.add_systems(
Update,
@ -71,7 +73,7 @@ struct DebugEvent {
/// A system that sends all combinations of events.
fn send_events(mut events: EventWriter<DebugEvent>, frame_count: Res<FrameCount>) {
info!("Sending events for frame {:?}", *frame_count);
println!("Sending events for frame {:?}", frame_count.0);
events.send(DebugEvent {
resend_from_param_set: false,
@ -109,7 +111,7 @@ fn send_and_receive_param_set(
mut param_set: ParamSet<(EventReader<DebugEvent>, EventWriter<DebugEvent>)>,
frame_count: Res<FrameCount>,
) {
info!(
println!(
"Sending and receiving events for frame {} with a `ParamSet`",
frame_count.0
);
@ -140,7 +142,7 @@ fn send_and_receive_manual_event_reader(
mut events: ResMut<Events<DebugEvent>>,
frame_count: Res<FrameCount>,
) {
info!(
println!(
"Sending and receiving events for frame {} with a `Local<ManualEventReader>",
frame_count.0
);