Vendor dependencies for 0.3.0 release

vendor/bevy/examples/2d/move_sprite.rs

@@ -0,0 +1,44 @@
+//! Renders a 2D scene containing a single, moving sprite.
+
+use bevy::prelude::*;
+
+fn main() {
+    App::new()
+        .add_plugins(DefaultPlugins)
+        .add_systems(Startup, setup)
+        .add_systems(Update, sprite_movement)
+        .run();
+}
+
+#[derive(Component)]
+enum Direction {
+    Left,
+    Right,
+}
+
+fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
+    commands.spawn(Camera2d);
+
+    commands.spawn((
+        Sprite::from_image(asset_server.load("branding/icon.png")),
+        Transform::from_xyz(0., 0., 0.),
+        Direction::Right,
+    ));
+}
+
+/// The sprite is animated by changing its translation depending on the time that has passed since
+/// the last frame.
+fn sprite_movement(time: Res<Time>, mut sprite_position: Query<(&mut Direction, &mut Transform)>) {
+    for (mut logo, mut transform) in &mut sprite_position {
+        match *logo {
+            Direction::Right => transform.translation.x += 150. * time.delta_secs(),
+            Direction::Left => transform.translation.x -= 150. * time.delta_secs(),
+        }
+
+        if transform.translation.x > 200. {
+            *logo = Direction::Left;
+        } else if transform.translation.x < -200. {
+            *logo = Direction::Right;
+        }
+    }
+}