Created
March 20, 2024 19:53
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bevy WASM MVCE
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <title>BEVY</title> | |
| <link data-trunk rel="copy-dir" href="assets" /> | |
| <style> | |
| body, html { | |
| height: 100%; | |
| } | |
| body { | |
| background-color: lightgray; | |
| margin: 0; | |
| display: flex; | |
| justify-content: center; | |
| align-items: center; | |
| } | |
| canvas { | |
| width: 100%; | |
| height: 100%; | |
| } | |
| </style> | |
| </head> | |
| </html> |
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| use std::time::Duration; | |
| use bevy::diagnostic::{Diagnostic, DiagnosticsStore, FrameTimeDiagnosticsPlugin}; | |
| use bevy::prelude::*; | |
| use bevy::winit::{UpdateMode, WinitSettings}; | |
| fn main() { | |
| App::new() | |
| .insert_resource(WinitSettings { | |
| focused_mode: UpdateMode::Reactive { | |
| wait: Duration::from_secs(2), | |
| }, | |
| unfocused_mode: UpdateMode::Reactive { | |
| wait: Duration::from_secs(2), | |
| }, | |
| }) | |
| .add_plugins(DefaultPlugins) | |
| .add_plugins(FrameTimeDiagnosticsPlugin) | |
| .add_systems(Startup, setup) | |
| .add_systems(Update, update_debug_fps) | |
| .run(); | |
| } | |
| #[derive(Component)] | |
| pub struct DebugFps; | |
| fn setup(mut commands: Commands) { | |
| commands.spawn(Camera2dBundle::default()); | |
| commands.spawn(( | |
| TextBundle::from_sections([ | |
| TextSection::new( | |
| "FPS ", | |
| TextStyle { | |
| font_size: 24.0, | |
| color: Color::WHITE, | |
| ..Default::default() | |
| }, | |
| ), | |
| TextSection::new( | |
| "", | |
| TextStyle { | |
| font_size: 24.0, | |
| color: Color::WHITE, | |
| ..Default::default() | |
| }, | |
| ), | |
| ]) | |
| .with_style(Style { | |
| position_type: PositionType::Absolute, | |
| bottom: Val::Px(10.0), | |
| left: Val::Px(10.0), | |
| ..Default::default() | |
| }), | |
| DebugFps, | |
| )); | |
| } | |
| fn update_debug_fps( | |
| diagnostics: Res<DiagnosticsStore>, | |
| mut query: Query<&mut Text, With<DebugFps>>, | |
| ) { | |
| for mut text in &mut query { | |
| let fps = diagnostics | |
| .get(&FrameTimeDiagnosticsPlugin::FPS) | |
| .and_then(Diagnostic::smoothed); | |
| if let Some(fps) = fps { | |
| text.sections[1].value = format!("{fps:.2}"); | |
| } | |
| } | |
| } |
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