mirror of
https://github.com/bevyengine/bevy
synced 2024-11-10 07:04:33 +00:00
b6a647cc01
Adds a `default()` shorthand for `Default::default()` ... because life is too short to constantly type `Default::default()`.
```rust
use bevy::prelude::*;
#[derive(Default)]
struct Foo {
bar: usize,
baz: usize,
}
// Normally you would do this:
let foo = Foo {
bar: 10,
..Default::default()
};
// But now you can do this:
let foo = Foo {
bar: 10,
..default()
};
```
The examples have been adapted to use `..default()`. I've left internal crates as-is for now because they don't pull in the bevy prelude, and the ergonomics of each case should be considered individually.
73 lines
2.2 KiB
Rust
73 lines
2.2 KiB
Rust
use bevy::prelude::*;
|
|
|
|
fn main() {
|
|
App::new()
|
|
.insert_resource(ClearColor(Color::BLACK))
|
|
.add_plugins(DefaultPlugins)
|
|
.add_startup_system(setup)
|
|
.run();
|
|
}
|
|
|
|
fn setup(
|
|
mut commands: Commands,
|
|
mut meshes: ResMut<Assets<Mesh>>,
|
|
mut materials: ResMut<Assets<StandardMaterial>>,
|
|
) {
|
|
// camera
|
|
commands.spawn_bundle(PerspectiveCameraBundle {
|
|
transform: Transform::from_xyz(1.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
|
|
..default()
|
|
});
|
|
|
|
// plane
|
|
commands.spawn_bundle(PbrBundle {
|
|
mesh: meshes.add(Mesh::from(shape::Plane { size: 100.0 })),
|
|
material: materials.add(StandardMaterial {
|
|
base_color: Color::rgb(0.2, 0.2, 0.2),
|
|
perceptual_roughness: 0.08,
|
|
..default()
|
|
}),
|
|
..default()
|
|
});
|
|
|
|
const COUNT: usize = 6;
|
|
let position_range = -4.0..4.0;
|
|
let radius_range = 0.0..0.8;
|
|
let pos_len = position_range.end - position_range.start;
|
|
let radius_len = radius_range.end - radius_range.start;
|
|
let mesh = meshes.add(Mesh::from(shape::UVSphere {
|
|
sectors: 128,
|
|
stacks: 64,
|
|
..default()
|
|
}));
|
|
|
|
for i in 0..COUNT {
|
|
let percent = i as f32 / COUNT as f32;
|
|
let radius = radius_range.start + percent * radius_len;
|
|
|
|
// sphere light
|
|
commands
|
|
.spawn_bundle(PbrBundle {
|
|
mesh: mesh.clone(),
|
|
material: materials.add(StandardMaterial {
|
|
base_color: Color::rgb(0.5, 0.5, 1.0),
|
|
unlit: true,
|
|
..default()
|
|
}),
|
|
transform: Transform::from_xyz(position_range.start + percent * pos_len, 0.6, 0.0)
|
|
.with_scale(Vec3::splat(radius)),
|
|
..default()
|
|
})
|
|
.with_children(|children| {
|
|
children.spawn_bundle(PointLightBundle {
|
|
point_light: PointLight {
|
|
intensity: 1500.0,
|
|
radius,
|
|
color: Color::rgb(0.2, 0.2, 1.0),
|
|
..default()
|
|
},
|
|
..default()
|
|
});
|
|
});
|
|
}
|
|
}
|