43 lines
1.1 KiB
Rust
43 lines
1.1 KiB
Rust
use bevy::prelude::*;
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struct MyEvent {
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pub message: String,
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}
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fn main() {
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App::build()
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.add_defaults()
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.add_event::<MyEvent>()
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.add_system(event_trigger_system())
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.build_system(event_listener_system)
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.run();
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}
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fn event_trigger_system() -> Box<dyn Schedulable> {
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let mut elapsed = 0.0;
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SystemBuilder::new("event_trigger")
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.read_resource::<Time>()
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.write_resource::<Event<MyEvent>>()
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.build(move |_, _, (time, my_event), _| {
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elapsed += time.delta_seconds;
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if elapsed > 1.0 {
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my_event.send(MyEvent {
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message: "Hello World".to_string(),
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});
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elapsed = 0.0;
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}
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})
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}
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fn event_listener_system(resources: &mut Resources) -> Box<dyn Schedulable> {
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let mut my_event_handle = resources.get_event_handle::<MyEvent>();
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SystemBuilder::new("event_listener")
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.read_resource::<Event<MyEvent>>()
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.build(move |_, _, my_events, _| {
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for my_event in my_events.iter(&mut my_event_handle) {
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println!("{}", my_event.message);
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}
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})
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}
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