7d40e3ec87
# Objective Continue migration of bevy APIs to required components, following guidance of https://hackmd.io/@bevy/required_components/ ## Solution - Make `Sprite` require `Transform` and `Visibility` and `SyncToRenderWorld` - move image and texture atlas handles into `Sprite` - deprecate `SpriteBundle` - remove engine uses of `SpriteBundle` ## Testing ran cargo tests on bevy_sprite and tested several sprite examples. --- ## Migration Guide Replace all uses of `SpriteBundle` with `Sprite`. There are several new convenience constructors: `Sprite::from_image`, `Sprite::from_atlas_image`, `Sprite::from_color`. WARNING: use of `Handle<Image>` and `TextureAtlas` as components on sprite entities will NO LONGER WORK. Use the fields on `Sprite` instead. I would have removed the `Component` impls from `TextureAtlas` and `Handle<Image>` except it is still used within ui. We should fix this moving forward with the migration.
37 lines
1012 B
Rust
37 lines
1012 B
Rust
//! Demonstrates how to use transparency in 2D.
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//! Shows 3 bevy logos on top of each other, each with a different amount of transparency.
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use bevy::prelude::*;
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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.add_systems(Startup, setup)
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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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commands.spawn(Camera2d);
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let sprite_handle = asset_server.load("branding/icon.png");
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commands.spawn(Sprite::from_image(sprite_handle.clone()));
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commands.spawn((
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Sprite {
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image: sprite_handle.clone(),
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// Alpha channel of the color controls transparency.
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color: Color::srgba(0.0, 0.0, 1.0, 0.7),
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..default()
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},
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Transform::from_xyz(100.0, 0.0, 0.0),
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));
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commands.spawn((
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Sprite {
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image: sprite_handle,
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color: Color::srgba(0.0, 1.0, 0.0, 0.3),
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..default()
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},
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Transform::from_xyz(200.0, 0.0, 0.0),
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));
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}
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