mirror of
https://github.com/bevyengine/bevy
synced 2024-11-10 07:04:33 +00:00
dbd226dc8a
# Objective Make the naming of a parameter more consistent. ## Solution - Changing the name of a parameter. ## Testing These changes can't be tested as they are documentation based. --- I apologize if something is wrong here, this is my first PR to bevy.
93 lines
2.7 KiB
Rust
93 lines
2.7 KiB
Rust
//! This example illustrates how to resize windows, and how to respond to a window being resized.
|
|
use bevy::{prelude::*, window::WindowResized};
|
|
|
|
fn main() {
|
|
App::new()
|
|
.insert_resource(ResolutionSettings {
|
|
large: Vec2::new(1920.0, 1080.0),
|
|
medium: Vec2::new(800.0, 600.0),
|
|
small: Vec2::new(640.0, 360.0),
|
|
})
|
|
.add_plugins(DefaultPlugins)
|
|
.add_systems(Startup, (setup_camera, setup_ui))
|
|
.add_systems(Update, (on_resize_system, toggle_resolution))
|
|
.run();
|
|
}
|
|
|
|
/// Marker component for the text that displays the current resolution.
|
|
#[derive(Component)]
|
|
struct ResolutionText;
|
|
|
|
/// Stores the various window-resolutions we can select between.
|
|
#[derive(Resource)]
|
|
struct ResolutionSettings {
|
|
large: Vec2,
|
|
medium: Vec2,
|
|
small: Vec2,
|
|
}
|
|
|
|
// Spawns the camera that draws UI
|
|
fn setup_camera(mut commands: Commands) {
|
|
commands.spawn(Camera2dBundle::default());
|
|
}
|
|
|
|
// Spawns the UI
|
|
fn setup_ui(mut commands: Commands) {
|
|
// Node that fills entire background
|
|
commands
|
|
.spawn(NodeBundle {
|
|
style: Style {
|
|
width: Val::Percent(100.),
|
|
..default()
|
|
},
|
|
..default()
|
|
})
|
|
.with_children(|root| {
|
|
// Text where we display current resolution
|
|
root.spawn((
|
|
TextBundle::from_section(
|
|
"Resolution",
|
|
TextStyle {
|
|
font_size: 50.0,
|
|
..default()
|
|
},
|
|
),
|
|
ResolutionText,
|
|
));
|
|
});
|
|
}
|
|
|
|
/// This system shows how to request the window to a new resolution
|
|
fn toggle_resolution(
|
|
keys: Res<ButtonInput<KeyCode>>,
|
|
mut windows: Query<&mut Window>,
|
|
resolution: Res<ResolutionSettings>,
|
|
) {
|
|
let mut window = windows.single_mut();
|
|
|
|
if keys.just_pressed(KeyCode::Digit1) {
|
|
let res = resolution.small;
|
|
window.resolution.set(res.x, res.y);
|
|
}
|
|
if keys.just_pressed(KeyCode::Digit2) {
|
|
let res = resolution.medium;
|
|
window.resolution.set(res.x, res.y);
|
|
}
|
|
if keys.just_pressed(KeyCode::Digit3) {
|
|
let res = resolution.large;
|
|
window.resolution.set(res.x, res.y);
|
|
}
|
|
}
|
|
|
|
/// This system shows how to respond to a window being resized.
|
|
/// Whenever the window is resized, the text will update with the new resolution.
|
|
fn on_resize_system(
|
|
mut q: Query<&mut Text, With<ResolutionText>>,
|
|
mut resize_reader: EventReader<WindowResized>,
|
|
) {
|
|
let mut text = q.single_mut();
|
|
for e in resize_reader.read() {
|
|
// When resolution is being changed
|
|
text.sections[0].value = format!("{:.1} x {:.1}", e.width, e.height);
|
|
}
|
|
}
|