9274bfed27
# Objective Fixes #16064 ## Solution - Add TextureAtlas to `UiImage::texture_atlas` - Add `TextureAtlas::from_atlas_image` for parity with `Sprite` - Rename `UiImage::texture` to `UiImage::image` for parity with `Sprite` - Port relevant implementations and uses - Remove `derive(Component)` for `TextureAtlas` --- ## Migration Guide Before: ```rust commands.spawn(( UiImage::new(image), TextureAtlas { index, layout }, )); ``` After: ```rust commands.spawn(UiImage::from_atlas_image(image, TextureAtlas { index, layout })); ``` Before: ```rust commands.spawn(UiImage { texture: some_image, ..default() }) ``` After: ```rust commands.spawn(UiImage { image: some_image, ..default() }) ```
76 lines
2.7 KiB
Rust
76 lines
2.7 KiB
Rust
//! This example illustrates how to use `TextureAtlases` within ui
|
|
|
|
use bevy::{color::palettes::css::*, prelude::*, winit::WinitSettings};
|
|
|
|
fn main() {
|
|
App::new()
|
|
.add_plugins(DefaultPlugins.set(
|
|
// This sets image filtering to nearest
|
|
// This is done to prevent textures with low resolution (e.g. pixel art) from being blurred
|
|
// by linear filtering.
|
|
ImagePlugin::default_nearest(),
|
|
))
|
|
// Only run the app when there is user input. This will significantly reduce CPU/GPU use.
|
|
.insert_resource(WinitSettings::desktop_app())
|
|
.add_systems(Startup, setup)
|
|
.add_systems(Update, increment_atlas_index)
|
|
.run();
|
|
}
|
|
|
|
fn setup(
|
|
mut commands: Commands,
|
|
asset_server: Res<AssetServer>,
|
|
mut texture_atlases: ResMut<Assets<TextureAtlasLayout>>,
|
|
) {
|
|
// Camera
|
|
commands.spawn(Camera2d);
|
|
|
|
let text_font = TextFont::default();
|
|
|
|
let texture_handle = asset_server.load("textures/rpg/chars/gabe/gabe-idle-run.png");
|
|
let texture_atlas = TextureAtlasLayout::from_grid(UVec2::splat(24), 7, 1, None, None);
|
|
let texture_atlas_handle = texture_atlases.add(texture_atlas);
|
|
|
|
// root node
|
|
commands
|
|
.spawn(Node {
|
|
width: Val::Percent(100.0),
|
|
height: Val::Percent(100.0),
|
|
flex_direction: FlexDirection::Column,
|
|
justify_content: JustifyContent::Center,
|
|
align_items: AlignItems::Center,
|
|
row_gap: Val::Px(text_font.font_size * 2.),
|
|
..default()
|
|
})
|
|
.with_children(|parent| {
|
|
parent.spawn((
|
|
UiImage::from_atlas_image(texture_handle, TextureAtlas::from(texture_atlas_handle)),
|
|
Node {
|
|
width: Val::Px(256.),
|
|
height: Val::Px(256.),
|
|
..default()
|
|
},
|
|
BackgroundColor(ANTIQUE_WHITE.into()),
|
|
Outline::new(Val::Px(8.0), Val::ZERO, CRIMSON.into()),
|
|
));
|
|
parent
|
|
.spawn((Text::new("press "), text_font.clone()))
|
|
.with_child((
|
|
TextSpan::new("space"),
|
|
TextColor(YELLOW.into()),
|
|
text_font.clone(),
|
|
))
|
|
.with_child((TextSpan::new(" to advance frames"), text_font));
|
|
});
|
|
}
|
|
|
|
fn increment_atlas_index(mut ui_images: Query<&mut UiImage>, keyboard: Res<ButtonInput<KeyCode>>) {
|
|
if keyboard.just_pressed(KeyCode::Space) {
|
|
for mut ui_image in &mut ui_images {
|
|
if let Some(atlas) = &mut ui_image.texture_atlas {
|
|
atlas.index = (atlas.index + 1) % 6;
|
|
}
|
|
}
|
|
}
|
|
}
|