6d6bc2a8b4
This is extracted out of eb8f973646476b4a4926ba644a77e2b3a5772159 and includes some additional changes to remove all references to AppBuilder and fix examples that still used App::build() instead of App::new(). In addition I didn't extract the sub app feature as it isn't ready yet. You can use `git diff --diff-filter=M eb8f973646476b4a4926ba644a77e2b3a5772159` to find all differences in this PR. The `--diff-filtered=M` filters all files added in the original commit but not in this commit away. Co-Authored-By: Carter Anderson <mcanders1@gmail.com>
83 lines
2.6 KiB
Rust
83 lines
2.6 KiB
Rust
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_startup_system(setup)
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.add_system(animate_translation)
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.add_system(animate_rotation)
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.add_system(animate_scale)
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.run();
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}
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struct AnimateTranslation;
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struct AnimateRotation;
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struct AnimateScale;
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fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
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let font = asset_server.load("fonts/FiraSans-Bold.ttf");
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let text_style = TextStyle {
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font,
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font_size: 60.0,
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color: Color::WHITE,
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};
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let text_alignment = TextAlignment {
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vertical: VerticalAlign::Center,
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horizontal: HorizontalAlign::Center,
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};
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// 2d camera
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commands.spawn_bundle(OrthographicCameraBundle::new_2d());
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// Demonstrate changing translation
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commands
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.spawn_bundle(Text2dBundle {
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text: Text::with_section("translation", text_style.clone(), text_alignment),
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..Default::default()
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})
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.insert(AnimateTranslation);
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// Demonstrate changing rotation
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commands
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.spawn_bundle(Text2dBundle {
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text: Text::with_section("rotation", text_style.clone(), text_alignment),
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..Default::default()
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})
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.insert(AnimateRotation);
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// Demonstrate changing scale
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commands
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.spawn_bundle(Text2dBundle {
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text: Text::with_section("scale", text_style, text_alignment),
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..Default::default()
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})
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.insert(AnimateScale);
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}
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fn animate_translation(
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time: Res<Time>,
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mut query: Query<&mut Transform, (With<Text>, With<AnimateTranslation>)>,
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) {
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for mut transform in query.iter_mut() {
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transform.translation.x = 100.0 * time.seconds_since_startup().sin() as f32 - 400.0;
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transform.translation.y = 100.0 * time.seconds_since_startup().cos() as f32;
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}
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}
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fn animate_rotation(
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time: Res<Time>,
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mut query: Query<&mut Transform, (With<Text>, With<AnimateRotation>)>,
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) {
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for mut transform in query.iter_mut() {
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transform.rotation = Quat::from_rotation_z(time.seconds_since_startup().cos() as f32);
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}
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}
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fn animate_scale(
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time: Res<Time>,
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mut query: Query<&mut Transform, (With<Text>, With<AnimateScale>)>,
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) {
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// Consider changing font-size instead of scaling the transform. Scaling a Text2D will scale the
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// rendered quad, resulting in a pixellated look.
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for mut transform in query.iter_mut() {
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transform.translation = Vec3::new(400.0, 0.0, 0.0);
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transform.scale = Vec3::splat((time.seconds_since_startup().sin() as f32 + 1.1) * 2.0);
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}
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}
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