bevy/crates/bevy_diagnostic/src/lib.rs

mod diagnostic;
mod frame_time_diagnostics_plugin;
mod print_diagnostics_plugin;
#[cfg(feature = "profiler")]
mod system_profiler;
pub use diagnostic::*;
pub use frame_time_diagnostics_plugin::FrameTimeDiagnosticsPlugin;
pub use print_diagnostics_plugin::PrintDiagnosticsPlugin;

use bevy_app::prelude::*;

pub struct PrintDiagnostics {}

#[derive(Default)]
pub struct DiagnosticsPlugin;

impl Plugin for DiagnosticsPlugin {
    fn build(&self, app: &mut AppBuilder) {
        app.init_resource::<Diagnostics>();
        #[cfg(feature = "profiler")]
        {
            use bevy_ecs::IntoQuerySystem;
            app.add_resource::<Box<dyn bevy_ecs::profiler::Profiler>>(Box::new(
                system_profiler::SystemProfiler::default(),
            ))
            .add_system_to_stage(
                bevy_app::stage::LAST,
                system_profiler::profiler_diagnostic_system.system(),
            );
        }
    }
}