5f86668bbb
Fixes #17856. ## Migration Guide - `EventWriter::send` has been renamed to `EventWriter::write`. - `EventWriter::send_batch` has been renamed to `EventWriter::write_batch`. - `EventWriter::send_default` has been renamed to `EventWriter::write_default`. --------- Co-authored-by: François Mockers <mockersf@gmail.com>
50 lines
1.3 KiB
Rust
50 lines
1.3 KiB
Rust
//! This example demonstrates you can create a custom runner (to update an app manually). It reads
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//! lines from stdin and prints them from within the ecs.
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use bevy::{app::AppExit, prelude::*};
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use std::io;
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#[derive(Resource)]
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struct Input(String);
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fn my_runner(mut app: App) -> AppExit {
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// Finalize plugin building, including running any necessary clean-up.
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// This is normally completed by the default runner.
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app.finish();
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app.cleanup();
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println!("Type stuff into the console");
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for line in io::stdin().lines() {
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{
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let mut input = app.world_mut().resource_mut::<Input>();
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input.0 = line.unwrap();
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}
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app.update();
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if let Some(exit) = app.should_exit() {
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return exit;
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}
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}
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AppExit::Success
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}
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fn print_system(input: Res<Input>) {
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println!("You typed: {}", input.0);
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}
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fn exit_system(input: Res<Input>, mut exit_event: EventWriter<AppExit>) {
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if input.0 == "exit" {
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exit_event.write(AppExit::Success);
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}
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}
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// AppExit implements `Termination` so we can return it from main.
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fn main() -> AppExit {
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App::new()
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.insert_resource(Input(String::new()))
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.set_runner(my_runner)
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.add_systems(Update, (print_system, exit_system))
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.run()
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}
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