Struct bevy_app::App

pub struct App {
    pub world: World,
    pub runner: Box<dyn Fn(App)>,
    pub schedule: Schedule,
}

Containers of app logic and data

App store the ECS World, Resources, Schedule, and Executor. They also store the “run” function of the App, which by default executes the App schedule once. Apps are constructed using the builder pattern.

Example

Here is a simple “Hello World” Bevy app:

fn main() {
   App::build()
       .add_system(hello_world_system.system())
       .run();
}

fn hello_world_system() {
   println!("hello world");
}

Fields

world: World

runner: Box<dyn Fn(App)>

schedule: Schedule

Implementations

impl App

pub fn build() -> AppBuilder

pub fn update(&mut self)

pub fn run(self)

Trait Implementations

impl Default for App

fn default() -> Self

Returns the “default value” for a type.