bevy_flurx

Tip

Supports no_std

This library provides functionality similar to coroutines, allowing you to write sequential processing for delays, user input, animations, and more.

Reactor can be used incrementally, meaning there’s no need to rewrite existing applications to incorporate it.

//! Here are some basic [once], [wait], [delay], [then], [pipe] and [through] actions.
//!
//! For details on all actions, please check [here](https://docs.rs/bevy_flurx/latest/bevy_flurx/action/index.html).
//!
//! [once]: https://docs.rs/bevy_flurx/latest/bevy_flurx/action/once/index.html
//! [wait]: https://docs.rs/bevy_flurx/latest/bevy_flurx/action/wait/index.html
//! [delay]: https://docs.rs/bevy_flurx/latest/bevy_flurx/action/delay/index.html
//! [then]: https://docs.rs/bevy_flurx/latest/bevy_flurx/action/sequence/trait.Then.html#tymethod.then
//! [pipe]: https://docs.rs/bevy_flurx/latest/bevy_flurx/action/pipe/trait.Pipe.html#tymethod.pipe
//! [through]: https://docs.rs/bevy_flurx/latest/bevy_flurx/action/through/fn.through.html

use bevy::prelude::*;
use bevy_flurx::prelude::*;
use core::time::Duration;

fn main() {
    App::new()
        .insert_resource(Count(0))
        .add_plugins((
            DefaultPlugins,
            FlurxPlugin,
        ))
        .add_systems(Startup, spawn_reactor)
        .run();
}

#[derive(Resource)]
struct Count(usize);

fn spawn_reactor(mut commands: Commands) {
    commands.spawn(Reactor::schedule(|task| async move {
        // `once` module defines the actions that runs only once.
        // For example, once::run once executes any system.
        // other once actions: https://docs.rs/bevy_flurx/latest/bevy_flurx/action/once/index.html
        let current_count: usize = task.will(Update, once::run(|mut count: ResMut<Count>| {
            count.0 += 1;
            count.0
        })).await;
        assert_eq!(current_count, 1);

        // ActionSeed and Action have input and output the generic types.
        // You can call `ActionSeed::with(<input>)` to pass the input to action seed.
        let result: usize = task.will(Update, once::run(|In(num): In<usize>| {
            num + 3
        }).with(3)).await;
        assert_eq!(result, 6);

        // The wait module defines actions that continue to execute every frame according to specified conditions.
        // For example, wait::until takes a system that returns a bool value and continues to execute it until it returns true.
        // other wait actions: https://docs.rs/bevy_flurx/latest/bevy_flurx/action/wait/index.html
        task.will(Update, wait::until(|mut count: ResMut<Count>| {
            count.0 += 1;
            info!("current count: {}", count.0);
            count.0 == 4
        })).await;

        // delay module defines the actions that perform delay processing.
        task.will(Update, delay::time().with(core::time::Duration::from_secs(1))).await;

        // `then`, `pipe` and through`  are also actions that continues to execute another action.
        let message = task.will(Update, {
            delay::frames().with(30)
                .then(once::run(|count: Res<Count>| {
                    count.0
                }))
                // Pipes the output of an action to the input of the next action.
                .pipe(once::run(|In(count): In<usize>| {
                    format!("count is {count}")
                }))
                // Executes the next while keeping the output of the previous action.
                .through(delay::time().with(Duration::from_secs(1)))
        }).await;
        assert_eq!(message, "count is 4");

        info!("Done!");
        task.will(Update, once::message::app_exit_success()).await;
    }));
}

Documents

• book

Example

All examples are here.

Feature flags

flag name	short description	default
audio	audio actions	false
record	undo/redo actions and events	false
side-effect	thread/async side effects	false
state	state actions	false
tokio	allows to use write asynchronous functions depend on tokio directly in the reactor	false
std	enable features that depend on the standard library	false
serialize	derives ReflectSerialize and ReflectDeserialize for some structs	false

audio

Provides the actions that perform simple audio playback and waiting using bevy's default audio functionality.

• once::audio
• wait::audio

record

doc.rs

Provides Record to manage operation history.

side-effect

doc.rs

Allows to convert the operations with side effects such as asynchronous runtime or thread into the referential-transparent actions.

tokio

You will be able to write processes that depend on tokio's runtime in the reactor.

std

Both side-effect and std flags must be enabled to use side_effect::thread.

ChangeLog

Please see here.

Compatible Bevy versions

bevy_flurx	bevy
0.15.0 ~	0.19
0.14.0 ~	0.18
0.13.0 ~	0.17
0.11 ~	0.16
0.7.0 ~	0.15
0.6.0 ~	0.14
0.3.0 ~	0.13

Credits

Using bevy_game_template to CI.

License

This crate is licensed under the MIT License or the Apache License 2.0.