b6a647cc01
Adds a `default()` shorthand for `Default::default()` ... because life is too short to constantly type `Default::default()`.
```rust
use bevy::prelude::*;
#[derive(Default)]
struct Foo {
bar: usize,
baz: usize,
}
// Normally you would do this:
let foo = Foo {
bar: 10,
..Default::default()
};
// But now you can do this:
let foo = Foo {
bar: 10,
..default()
};
```
The examples have been adapted to use `..default()`. I've left internal crates as-is for now because they don't pull in the bevy prelude, and the ergonomics of each case should be considered individually.
82 lines
2.9 KiB
Rust
82 lines
2.9 KiB
Rust
use bevy::prelude::*;
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/// This example illustrates how to customize the default window settings
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fn main() {
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App::new()
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.insert_resource(WindowDescriptor {
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width: 500.,
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height: 300.,
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..default()
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})
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.add_plugins(DefaultPlugins)
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.add_startup_system(setup)
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.add_system(toggle_override)
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.add_system(change_scale_factor)
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.run();
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}
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fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
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// ui camera
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commands.spawn_bundle(UiCameraBundle::default());
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// root node
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commands
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.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
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justify_content: JustifyContent::SpaceBetween,
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..default()
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},
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color: Color::NONE.into(),
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..default()
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})
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.with_children(|parent| {
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// left vertical fill (border)
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parent
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.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Px(200.0), Val::Percent(100.0)),
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border: Rect::all(Val::Px(2.0)),
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..default()
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},
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color: Color::rgb(0.65, 0.65, 0.65).into(),
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..default()
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})
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.with_children(|parent| {
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parent.spawn_bundle(TextBundle {
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style: Style {
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align_self: AlignSelf::FlexEnd,
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..default()
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},
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text: Text::with_section(
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"Example text",
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TextStyle {
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font: asset_server.load("fonts/FiraSans-Bold.ttf"),
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font_size: 30.0,
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color: Color::WHITE,
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},
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Default::default(),
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),
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..default()
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});
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});
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});
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}
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/// This system toggles scale factor overrides when enter is pressed
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fn toggle_override(input: Res<Input<KeyCode>>, mut windows: ResMut<Windows>) {
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let window = windows.get_primary_mut().unwrap();
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if input.just_pressed(KeyCode::Return) {
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window.set_scale_factor_override(window.scale_factor_override().xor(Some(1.)));
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}
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}
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/// This system changes the scale factor override when up or down is pressed
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fn change_scale_factor(input: Res<Input<KeyCode>>, mut windows: ResMut<Windows>) {
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let window = windows.get_primary_mut().unwrap();
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if input.just_pressed(KeyCode::Up) {
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window.set_scale_factor_override(window.scale_factor_override().map(|n| n + 1.));
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} else if input.just_pressed(KeyCode::Down) {
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window.set_scale_factor_override(window.scale_factor_override().map(|n| (n - 1.).max(1.)));
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}
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}
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