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many-buttons commandline options for text and layout recomputation (#8418)

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# Objective

Add commandline options that force the recomputation of text and layout
to happen every frame.
This commit is contained in:
ickshonpe 2023-04-17 18:49:11 +01:00 committed by GitHub
parent fe0ad10b0c
commit 8ed7723823
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 34 additions and 14 deletions
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48
examples/stress_tests/many_buttons.rs
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@ -2,6 +2,12 @@
//!
//! To start the demo without text run
//! `cargo run --example many_buttons --release no-text`
//!
//| To do a full layout update each frame run
//! `cargo run --example many_buttons --release recompute-layout`
//!
//! To recompute all text each frame run
//! `cargo run --example many_buttons --release recompute-text`
use bevy::{
diagnostic::{FrameTimeDiagnosticsPlugin, LogDiagnosticsPlugin},
@ -15,20 +21,34 @@ const FONT_SIZE: f32 = 7.0;
/// This example shows what happens when there is a lot of buttons on screen.
fn main() {
App::new()
.add_plugins(DefaultPlugins.set(WindowPlugin {
primary_window: Some(Window {
present_mode: PresentMode::Immediate,
..default()
}),
let mut app = App::new();
app.add_plugins(DefaultPlugins.set(WindowPlugin {
primary_window: Some(Window {
present_mode: PresentMode::Immediate,
..default()
}))
.add_plugin(FrameTimeDiagnosticsPlugin::default())
.add_plugin(LogDiagnosticsPlugin::default())
.init_resource::<UiFont>()
.add_systems(Startup, setup)
.add_systems(Update, button_system)
.run();
}),
..default()
}))
.add_plugin(FrameTimeDiagnosticsPlugin::default())
.add_plugin(LogDiagnosticsPlugin::default())
.init_resource::<UiFont>()
.add_systems(Startup, setup)
.add_systems(Update, button_system);
if std::env::args().any(|arg| arg == "recompute-layout") {
app.add_systems(Update, |mut ui_scale: ResMut<UiScale>| {
ui_scale.set_changed();
});
}
if std::env::args().any(|arg| arg == "recompute-text") {
app.add_systems(Update, |mut text_query: Query<&mut Text>| {
text_query.for_each_mut(|mut text| text.set_changed());
});
}
app.run();
}
#[derive(Component)]
@ -73,7 +93,7 @@ fn setup(mut commands: Commands, font: Res<UiFont>) {
..default()
})
.with_children(|commands| {
let spawn_text = std::env::args().nth(1).as_deref() != Some("no-text");
let spawn_text = std::env::args().all(|arg| arg != "no-text");
for i in 0..count {
for j in 0..count {
let color = as_rainbow(j % i.max(1)).into();