Update to Bevy 0.7.0

[thmsgntz]

Hi all!
I followed the tutorial to learn both Rust and Bevy. I did in Bevy 0.7.0 and bevy_mod_picking 0.6.1 (here is my repo, I did the migration from Bevy 0.4.0 from the tutorial page to 0.7.0. Was harder for me than doing it from 0.5.0!).
After I posted it on reddit, we advised me to do a Pull Request in your repo. So here it is!

Minor updates

Added component attributes

Since Bevy 0.6.0, all components structs require #[derive(Component)].

Remove the call of system() in the App setup

Since Bevy 0.7.0, .system is depreciated.

main.rs

Camera

• From PerspectiveCameraBundle
• To OrthographicCameraBundle (used this example)

Update: no modification on Camera.

Lights

• From LightBundle
• To PointLightBundle

PointLightBundle {
    transform: Transform::from_translation(Vec3::new(4.0, 8.0, 4.0)),
    ..Default::default()
}

ui.rs

Use TextBundle instead of NodeBundle with child:

.commands()
    .spawn_bundle(TextBundle {
            style: Style {
                position_type: PositionType::Absolute,
                position: Rect {
                    left: Val::Px(10.),
                    top: Val::Px(10.),
                    ..Default::default()
                },
                ..Default::default()
                },
            text: Text::with_section(
                String::from("Next move: White"),
                TextStyle {
                        font: font.clone(),
                        font_size: 40.0,
                        color: Color::rgb(0.8, 0.8, 0.8),
                        },
            TextAlignment {
                        horizontal: HorizontalAlign::Center,
                        ..default()
                    }),
            ..Default::default()
            })
            .insert(NextMoveText);

[alice-i-cecile]

Nice! Only change that I'm questioning is the swap to an orthographic camera. This will look different than the original camera, although I think both choices are defensible for chess.

[thmsgntz]

Now that you mention it, I don't know! The camera was the first component that I added in my learning process in Bevy, so I think what happened is that I didn't manage to make PerspectiveCameraBundle work. Then I ran in this example and thought "oh this is how we do now in 0.7.0".

But now that I see that PerspectiveCameraBundle perfectly exists in 0.7.0.. I think I can switch back to PerspectiveCameraBundle so we keep the changes minimal.