45 lines
1.3 KiB
Rust
45 lines
1.3 KiB
Rust
use bevy::{
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diagnostic::{Diagnostics, FrameTimeDiagnosticsPlugin},
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prelude::*,
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};
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fn main() {
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App::build()
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.add_default_plugins()
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.add_plugin(FrameTimeDiagnosticsPlugin::default())
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.add_startup_system(setup.system())
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.add_system(text_update_system.system())
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.run();
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}
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fn text_update_system(diagnostics: Res<Diagnostics>, mut query: Query<&mut Label>) {
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for mut label in &mut query.iter() {
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if let Some(fps) = diagnostics.get(FrameTimeDiagnosticsPlugin::FPS) {
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if let Some(average) = fps.average() {
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label.text = format!("FPS: {:.2}", average);
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}
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}
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}
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}
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fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
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let font_handle = asset_server.load("assets/fonts/FiraSans-Bold.ttf").unwrap();
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commands
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// 2d camera
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.spawn(Camera2dComponents::default())
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// texture
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.spawn(LabelComponents {
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node: Node::new(Anchors::TOP_LEFT, Margins::new(0.0, 250.0, 0.0, 60.0)),
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label: Label {
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text: "FPS:".to_string(),
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font: font_handle,
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style: TextStyle {
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font_size: 60.0,
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color: Color::WHITE,
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align: TextAlign::Left,
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},
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},
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..Default::default()
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});
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}
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