fps_minimalist.rs

//! This example shows how to make a very minimalistic FPS counter.
//!
//! Shows only current and worst FPS values, horizontally with no labels.

use bevy::prelude::*;
use iyes_perf_ui::prelude::*;

fn main() {
    App::new()
        .add_plugins(DefaultPlugins)

        // we want Bevy to measure these values for us:
        .add_plugins(bevy::diagnostic::FrameTimeDiagnosticsPlugin)

        .add_plugins(PerfUiPlugin)
        .add_systems(Startup, setup)

        .run();
}

fn setup(mut commands: Commands) {
    // spawn a camera to be able to see anything
    commands.spawn(Camera2dBundle::default());

    commands.spawn((
        PerfUiRoot {
            display_labels: false,
            layout_horizontal: true,
            ..default()
        },
        PerfUiEntryFPSWorst::default(),
        PerfUiEntryFPS::default(),
    ));
}