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use crate::app_builder::AppBuilder;
use bevy_ecs::{ParallelExecutor, Resources, Schedule, World};
#[allow(clippy::needless_doctest_main)]
pub struct App {
pub world: World,
pub resources: Resources,
pub runner: Box<dyn Fn(App)>,
pub schedule: Schedule,
pub executor: ParallelExecutor,
pub startup_schedule: Schedule,
pub startup_executor: ParallelExecutor,
}
impl Default for App {
fn default() -> Self {
Self {
world: Default::default(),
resources: Default::default(),
schedule: Default::default(),
executor: Default::default(),
startup_schedule: Default::default(),
startup_executor: ParallelExecutor::without_tracker_clears(),
runner: Box::new(run_once),
}
}
}
fn run_once(mut app: App) {
app.initialize();
app.update();
}
impl App {
pub fn build() -> AppBuilder {
AppBuilder::default()
}
pub fn update(&mut self) {
self.schedule
.initialize(&mut self.world, &mut self.resources);
self.executor
.run(&mut self.schedule, &mut self.world, &mut self.resources);
}
pub fn initialize(&mut self) {
self.startup_schedule
.initialize(&mut self.world, &mut self.resources);
self.startup_executor.initialize(&mut self.resources);
self.startup_executor.run(
&mut self.startup_schedule,
&mut self.world,
&mut self.resources,
);
}
pub fn run(mut self) {
self.executor.initialize(&mut self.resources);
let runner = std::mem::replace(&mut self.runner, Box::new(run_once));
(runner)(self);
}
}
#[derive(Debug, Clone)]
pub struct AppExit;