49 lines
1.7 KiB
Rust
49 lines
1.7 KiB
Rust
use crate::{Diagnostic, DiagnosticId, Diagnostics};
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use bevy_app::prelude::*;
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use bevy_core::FrameCount;
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use bevy_ecs::prelude::*;
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use bevy_time::Time;
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/// Adds "frame time" diagnostic to an App, specifically "frame time", "fps" and "frame count"
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#[derive(Default)]
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pub struct FrameTimeDiagnosticsPlugin;
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impl Plugin for FrameTimeDiagnosticsPlugin {
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fn build(&self, app: &mut bevy_app::App) {
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app.add_systems(Startup, Self::setup_system)
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.add_systems(Update, Self::diagnostic_system);
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}
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}
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impl FrameTimeDiagnosticsPlugin {
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pub const FPS: DiagnosticId = DiagnosticId::from_u128(288146834822086093791974408528866909483);
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pub const FRAME_COUNT: DiagnosticId =
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DiagnosticId::from_u128(54021991829115352065418785002088010277);
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pub const FRAME_TIME: DiagnosticId =
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DiagnosticId::from_u128(73441630925388532774622109383099159699);
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pub fn setup_system(mut diagnostics: ResMut<Diagnostics>) {
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diagnostics.add(Diagnostic::new(Self::FRAME_TIME, "frame_time", 20).with_suffix("ms"));
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diagnostics.add(Diagnostic::new(Self::FPS, "fps", 20));
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diagnostics
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.add(Diagnostic::new(Self::FRAME_COUNT, "frame_count", 1).with_smoothing_factor(0.0));
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}
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pub fn diagnostic_system(
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mut diagnostics: ResMut<Diagnostics>,
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time: Res<Time>,
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frame_count: Res<FrameCount>,
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) {
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diagnostics.add_measurement(Self::FRAME_COUNT, || frame_count.0 as f64);
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let delta_seconds = time.raw_delta_seconds_f64();
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if delta_seconds == 0.0 {
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return;
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}
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diagnostics.add_measurement(Self::FRAME_TIME, || delta_seconds * 1000.0);
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diagnostics.add_measurement(Self::FPS, || 1.0 / delta_seconds);
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}
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}
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