mirror of
https://github.com/bevyengine/bevy
synced 2024-11-10 15:14:50 +00:00
81b53d15d4
Resolves #1253 #1562 This makes the Commands apis consistent with World apis. This moves to a "type state" pattern (like World) where the "current entity" is stored in an `EntityCommands` builder. In general this tends to cuts down on indentation and line count. It comes at the cost of needing to type `commands` more and adding more semicolons to terminate expressions. I also added `spawn_bundle` to Commands because this is a common enough operation that I think its worth providing a shorthand.
39 lines
1.3 KiB
Rust
39 lines
1.3 KiB
Rust
use bevy::prelude::*;
|
|
|
|
fn main() {
|
|
App::build()
|
|
.add_plugins(DefaultPlugins)
|
|
.add_startup_system(setup.system())
|
|
.add_system(animate.system())
|
|
.run();
|
|
}
|
|
|
|
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
|
|
// 2d camera
|
|
commands.spawn_bundle(OrthographicCameraBundle::new_2d());
|
|
commands.spawn_bundle(Text2dBundle {
|
|
text: Text::with_section(
|
|
"This text is in the 2D scene.",
|
|
TextStyle {
|
|
font: asset_server.load("fonts/FiraSans-Bold.ttf"),
|
|
font_size: 60.0,
|
|
color: Color::WHITE,
|
|
},
|
|
TextAlignment {
|
|
vertical: VerticalAlign::Center,
|
|
horizontal: HorizontalAlign::Center,
|
|
},
|
|
),
|
|
..Default::default()
|
|
});
|
|
}
|
|
|
|
fn animate(time: Res<Time>, mut query: Query<&mut Transform, With<Text>>) {
|
|
// `Transform.translation` will determine the location of the text.
|
|
// `Transform.scale` and `Transform.rotation` do not yet affect text (though you can set the
|
|
// size of the text via `Text.style.font_size`)
|
|
for mut transform in query.iter_mut() {
|
|
transform.translation.x = 100.0 * time.seconds_since_startup().sin() as f32;
|
|
transform.translation.y = 100.0 * time.seconds_since_startup().cos() as f32;
|
|
}
|
|
}
|