11b41206eb
This updates the `pipelined-rendering` branch to use the latest `bevy_ecs` from `main`. This accomplishes a couple of goals: 1. prepares for upcoming `custom-shaders` branch changes, which were what drove many of the recent bevy_ecs changes on `main` 2. prepares for the soon-to-happen merge of `pipelined-rendering` into `main`. By including bevy_ecs changes now, we make that merge simpler / easier to review. I split this up into 3 commits: 1. **add upstream bevy_ecs**: please don't bother reviewing this content. it has already received thorough review on `main` and is a literal copy/paste of the relevant folders (the old folders were deleted so the directories are literally exactly the same as `main`). 2. **support manual buffer application in stages**: this is used to enable the Extract step. we've already reviewed this once on the `pipelined-rendering` branch, but its worth looking at one more time in the new context of (1). 3. **support manual archetype updates in QueryState**: same situation as (2).
50 lines
1.2 KiB
Rust
50 lines
1.2 KiB
Rust
use bevy::prelude::*;
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/// This example creates a new event, a system that triggers the event once per second,
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/// and a system that prints a message whenever the event is received.
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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.add_event::<MyEvent>()
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.init_resource::<EventTriggerState>()
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.add_system(event_trigger_system)
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.add_system(event_listener_system)
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.run();
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}
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struct MyEvent {
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pub message: String,
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}
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struct EventTriggerState {
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event_timer: Timer,
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}
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impl Default for EventTriggerState {
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fn default() -> Self {
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EventTriggerState {
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event_timer: Timer::from_seconds(1.0, true),
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}
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}
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}
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// sends MyEvent every second
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fn event_trigger_system(
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time: Res<Time>,
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mut state: ResMut<EventTriggerState>,
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mut my_events: EventWriter<MyEvent>,
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) {
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if state.event_timer.tick(time.delta()).finished() {
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my_events.send(MyEvent {
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message: "MyEvent just happened!".to_string(),
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});
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}
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}
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// prints events as they come in
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fn event_listener_system(mut events: EventReader<MyEvent>) {
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for my_event in events.iter() {
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info!("{}", my_event.message);
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}
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}
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