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.
219 lines
10 KiB
Rust
219 lines
10 KiB
Rust
use bevy::prelude::*;
|
|
|
|
/// This example illustrates the various features of Bevy UI.
|
|
fn main() {
|
|
App::build()
|
|
.add_plugins(DefaultPlugins)
|
|
.add_startup_system(setup.system())
|
|
.run();
|
|
}
|
|
|
|
fn setup(
|
|
mut commands: Commands,
|
|
asset_server: Res<AssetServer>,
|
|
mut materials: ResMut<Assets<ColorMaterial>>,
|
|
) {
|
|
// ui camera
|
|
commands.spawn_bundle(UiCameraBundle::default());
|
|
// root node
|
|
commands
|
|
.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
|
|
justify_content: JustifyContent::SpaceBetween,
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::NONE.into()),
|
|
..Default::default()
|
|
})
|
|
.with_children(|parent| {
|
|
// left vertical fill (border)
|
|
parent
|
|
.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Px(200.0), Val::Percent(100.0)),
|
|
border: Rect::all(Val::Px(2.0)),
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::rgb(0.65, 0.65, 0.65).into()),
|
|
..Default::default()
|
|
})
|
|
.with_children(|parent| {
|
|
// left vertical fill (content)
|
|
parent
|
|
.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
|
|
align_items: AlignItems::FlexEnd,
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::rgb(0.15, 0.15, 0.15).into()),
|
|
..Default::default()
|
|
})
|
|
.with_children(|parent| {
|
|
// text
|
|
parent.spawn_bundle(TextBundle {
|
|
style: Style {
|
|
margin: Rect::all(Val::Px(5.0)),
|
|
..Default::default()
|
|
},
|
|
text: Text::with_section(
|
|
"Text Example",
|
|
TextStyle {
|
|
font: asset_server.load("fonts/FiraSans-Bold.ttf"),
|
|
font_size: 30.0,
|
|
color: Color::WHITE,
|
|
},
|
|
Default::default(),
|
|
),
|
|
..Default::default()
|
|
});
|
|
});
|
|
});
|
|
// right vertical fill
|
|
parent.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Px(200.0), Val::Percent(100.0)),
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::rgb(0.15, 0.15, 0.15).into()),
|
|
..Default::default()
|
|
});
|
|
// absolute positioning
|
|
parent
|
|
.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Px(200.0), Val::Px(200.0)),
|
|
position_type: PositionType::Absolute,
|
|
position: Rect {
|
|
left: Val::Px(210.0),
|
|
bottom: Val::Px(10.0),
|
|
..Default::default()
|
|
},
|
|
border: Rect::all(Val::Px(20.0)),
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::rgb(0.4, 0.4, 1.0).into()),
|
|
..Default::default()
|
|
})
|
|
.with_children(|parent| {
|
|
parent.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::rgb(0.8, 0.8, 1.0).into()),
|
|
..Default::default()
|
|
});
|
|
});
|
|
// render order test: reddest in the back, whitest in the front (flex center)
|
|
parent
|
|
.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
|
|
position_type: PositionType::Absolute,
|
|
align_items: AlignItems::Center,
|
|
justify_content: JustifyContent::Center,
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::NONE.into()),
|
|
..Default::default()
|
|
})
|
|
.with_children(|parent| {
|
|
parent
|
|
.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Px(100.0), Val::Px(100.0)),
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::rgb(1.0, 0.0, 0.0).into()),
|
|
..Default::default()
|
|
})
|
|
.with_children(|parent| {
|
|
parent.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Px(100.0), Val::Px(100.0)),
|
|
position_type: PositionType::Absolute,
|
|
position: Rect {
|
|
left: Val::Px(20.0),
|
|
bottom: Val::Px(20.0),
|
|
..Default::default()
|
|
},
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::rgb(1.0, 0.3, 0.3).into()),
|
|
..Default::default()
|
|
});
|
|
parent.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Px(100.0), Val::Px(100.0)),
|
|
position_type: PositionType::Absolute,
|
|
position: Rect {
|
|
left: Val::Px(40.0),
|
|
bottom: Val::Px(40.0),
|
|
..Default::default()
|
|
},
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::rgb(1.0, 0.5, 0.5).into()),
|
|
..Default::default()
|
|
});
|
|
parent.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Px(100.0), Val::Px(100.0)),
|
|
position_type: PositionType::Absolute,
|
|
position: Rect {
|
|
left: Val::Px(60.0),
|
|
bottom: Val::Px(60.0),
|
|
..Default::default()
|
|
},
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::rgb(1.0, 0.7, 0.7).into()),
|
|
..Default::default()
|
|
});
|
|
// alpha test
|
|
parent.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Px(100.0), Val::Px(100.0)),
|
|
position_type: PositionType::Absolute,
|
|
position: Rect {
|
|
left: Val::Px(80.0),
|
|
bottom: Val::Px(80.0),
|
|
..Default::default()
|
|
},
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::rgba(1.0, 0.9, 0.9, 0.4).into()),
|
|
..Default::default()
|
|
});
|
|
});
|
|
});
|
|
// bevy logo (flex center)
|
|
parent
|
|
.spawn_bundle(NodeBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
|
|
position_type: PositionType::Absolute,
|
|
justify_content: JustifyContent::Center,
|
|
align_items: AlignItems::FlexEnd,
|
|
..Default::default()
|
|
},
|
|
material: materials.add(Color::NONE.into()),
|
|
..Default::default()
|
|
})
|
|
.with_children(|parent| {
|
|
// bevy logo (image)
|
|
parent.spawn_bundle(ImageBundle {
|
|
style: Style {
|
|
size: Size::new(Val::Px(500.0), Val::Auto),
|
|
..Default::default()
|
|
},
|
|
material: materials
|
|
.add(asset_server.load("branding/bevy_logo_dark_big.png").into()),
|
|
..Default::default()
|
|
});
|
|
});
|
|
});
|
|
}
|