mirror of
https://github.com/bevyengine/bevy
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25bfa80e60
# Objective Yet another PR for migrating stuff to required components. This time, cameras! ## Solution As per the [selected proposal](https://hackmd.io/tsYID4CGRiWxzsgawzxG_g#Combined-Proposal-1-Selected), deprecate `Camera2dBundle` and `Camera3dBundle` in favor of `Camera2d` and `Camera3d`. Adding a `Camera` without `Camera2d` or `Camera3d` now logs a warning, as suggested by Cart [on Discord](https://discord.com/channels/691052431525675048/1264881140007702558/1291506402832945273). I would personally like cameras to work a bit differently and be split into a few more components, to avoid some footguns and confusing semantics, but that is more controversial, and shouldn't block this core migration. ## Testing I ran a few 2D and 3D examples, and tried cameras with and without render graphs. --- ## Migration Guide `Camera2dBundle` and `Camera3dBundle` have been deprecated in favor of `Camera2d` and `Camera3d`. Inserting them will now also insert the other components required by them automatically.
72 lines
2.3 KiB
Rust
72 lines
2.3 KiB
Rust
//! A simple scene to demonstrate picking events
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use bevy::{color::palettes::css::*, prelude::*};
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fn main() {
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let mut app = App::new();
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app.add_plugins(DefaultPlugins);
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app.add_systems(Startup, setup);
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app.run();
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}
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/// set up a simple 3D scene
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fn setup(
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mut commands: Commands,
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mut meshes: ResMut<Assets<Mesh>>,
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mut materials: ResMut<Assets<StandardMaterial>>,
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) {
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commands
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.spawn(TextBundle {
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text: Text::from_section("Click Me to get a box", TextStyle::default()),
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style: Style {
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position_type: PositionType::Absolute,
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top: Val::Percent(12.0),
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left: Val::Percent(12.0),
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..default()
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},
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..Default::default()
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})
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.observe(
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|_click: Trigger<Pointer<Click>>,
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mut commands: Commands,
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mut meshes: ResMut<Assets<Mesh>>,
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mut materials: ResMut<Assets<StandardMaterial>>,
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mut num: Local<usize>| {
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commands.spawn((
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Mesh3d(meshes.add(Cuboid::new(1.0, 1.0, 1.0))),
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MeshMaterial3d(materials.add(Color::srgb_u8(124, 144, 255))),
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Transform::from_xyz(0.0, 0.5 + 1.1 * *num as f32, 0.0),
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));
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*num += 1;
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},
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)
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.observe(|evt: Trigger<Pointer<Out>>, mut texts: Query<&mut Text>| {
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let mut text = texts.get_mut(evt.entity()).unwrap();
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text.sections[0].style.color = WHITE.into();
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})
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.observe(|evt: Trigger<Pointer<Over>>, mut texts: Query<&mut Text>| {
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let mut text = texts.get_mut(evt.entity()).unwrap();
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text.sections[0].style.color = BLUE.into();
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});
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// circular base
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commands.spawn((
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Mesh3d(meshes.add(Circle::new(4.0))),
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MeshMaterial3d(materials.add(Color::WHITE)),
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Transform::from_rotation(Quat::from_rotation_x(-std::f32::consts::FRAC_PI_2)),
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));
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// light
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commands.spawn((
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PointLight {
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shadows_enabled: true,
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..default()
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},
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Transform::from_xyz(4.0, 8.0, 4.0),
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));
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// camera
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commands.spawn((
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Camera3d::default(),
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Transform::from_xyz(-2.5, 4.5, 9.0).looking_at(Vec3::ZERO, Vec3::Y),
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));
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}
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