269 lines
8.1 KiB
Rust
269 lines
8.1 KiB
Rust
//! Illustrates different lights of various types and colors, some static, some moving over
|
|
//! a simple scene.
|
|
|
|
use std::f32::consts::PI;
|
|
|
|
use bevy::{pbr::CascadeShadowConfigBuilder, prelude::*};
|
|
|
|
fn main() {
|
|
App::new()
|
|
.add_plugins(DefaultPlugins)
|
|
.add_systems(Startup, setup)
|
|
.add_systems(Update, (movement, animate_light_direction))
|
|
.run();
|
|
}
|
|
|
|
#[derive(Component)]
|
|
struct Movable;
|
|
|
|
/// set up a simple 3D scene
|
|
fn setup(
|
|
mut commands: Commands,
|
|
mut meshes: ResMut<Assets<Mesh>>,
|
|
mut materials: ResMut<Assets<StandardMaterial>>,
|
|
asset_server: Res<AssetServer>,
|
|
) {
|
|
// ground plane
|
|
commands.spawn(PbrBundle {
|
|
mesh: meshes.add(shape::Plane::from_size(10.0).into()),
|
|
material: materials.add(StandardMaterial {
|
|
base_color: Color::WHITE,
|
|
perceptual_roughness: 1.0,
|
|
..default()
|
|
}),
|
|
..default()
|
|
});
|
|
|
|
// left wall
|
|
let mut transform = Transform::from_xyz(2.5, 2.5, 0.0);
|
|
transform.rotate_z(PI / 2.);
|
|
commands.spawn(PbrBundle {
|
|
mesh: meshes.add(Mesh::from(shape::Box::new(5.0, 0.15, 5.0))),
|
|
transform,
|
|
material: materials.add(StandardMaterial {
|
|
base_color: Color::INDIGO,
|
|
perceptual_roughness: 1.0,
|
|
..default()
|
|
}),
|
|
..default()
|
|
});
|
|
// back (right) wall
|
|
let mut transform = Transform::from_xyz(0.0, 2.5, -2.5);
|
|
transform.rotate_x(PI / 2.);
|
|
commands.spawn(PbrBundle {
|
|
mesh: meshes.add(Mesh::from(shape::Box::new(5.0, 0.15, 5.0))),
|
|
transform,
|
|
material: materials.add(StandardMaterial {
|
|
base_color: Color::INDIGO,
|
|
perceptual_roughness: 1.0,
|
|
..default()
|
|
}),
|
|
..default()
|
|
});
|
|
|
|
// Bevy logo to demonstrate alpha mask shadows
|
|
let mut transform = Transform::from_xyz(-2.2, 0.5, 1.0);
|
|
transform.rotate_y(PI / 8.);
|
|
commands.spawn((
|
|
PbrBundle {
|
|
mesh: meshes.add(Mesh::from(shape::Quad::new(Vec2::new(2.0, 0.5)))),
|
|
transform,
|
|
material: materials.add(StandardMaterial {
|
|
base_color_texture: Some(asset_server.load("branding/bevy_logo_light.png")),
|
|
perceptual_roughness: 1.0,
|
|
alpha_mode: AlphaMode::Mask(0.5),
|
|
cull_mode: None,
|
|
..default()
|
|
}),
|
|
..default()
|
|
},
|
|
Movable,
|
|
));
|
|
|
|
// cube
|
|
commands.spawn((
|
|
PbrBundle {
|
|
mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
|
|
material: materials.add(StandardMaterial {
|
|
base_color: Color::PINK,
|
|
..default()
|
|
}),
|
|
transform: Transform::from_xyz(0.0, 0.5, 0.0),
|
|
..default()
|
|
},
|
|
Movable,
|
|
));
|
|
// sphere
|
|
commands.spawn((
|
|
PbrBundle {
|
|
mesh: meshes.add(Mesh::from(shape::UVSphere {
|
|
radius: 0.5,
|
|
..default()
|
|
})),
|
|
material: materials.add(StandardMaterial {
|
|
base_color: Color::LIME_GREEN,
|
|
..default()
|
|
}),
|
|
transform: Transform::from_xyz(1.5, 1.0, 1.5),
|
|
..default()
|
|
},
|
|
Movable,
|
|
));
|
|
|
|
// ambient light
|
|
commands.insert_resource(AmbientLight {
|
|
color: Color::ORANGE_RED,
|
|
brightness: 0.02,
|
|
});
|
|
|
|
// red point light
|
|
commands
|
|
.spawn(PointLightBundle {
|
|
// transform: Transform::from_xyz(5.0, 8.0, 2.0),
|
|
transform: Transform::from_xyz(1.0, 2.0, 0.0),
|
|
point_light: PointLight {
|
|
intensity: 1600.0, // lumens - roughly a 100W non-halogen incandescent bulb
|
|
color: Color::RED,
|
|
shadows_enabled: true,
|
|
..default()
|
|
},
|
|
..default()
|
|
})
|
|
.with_children(|builder| {
|
|
builder.spawn(PbrBundle {
|
|
mesh: meshes.add(Mesh::from(shape::UVSphere {
|
|
radius: 0.1,
|
|
..default()
|
|
})),
|
|
material: materials.add(StandardMaterial {
|
|
base_color: Color::RED,
|
|
emissive: Color::rgba_linear(7.13, 0.0, 0.0, 0.0),
|
|
..default()
|
|
}),
|
|
..default()
|
|
});
|
|
});
|
|
|
|
// green spot light
|
|
commands
|
|
.spawn(SpotLightBundle {
|
|
transform: Transform::from_xyz(-1.0, 2.0, 0.0)
|
|
.looking_at(Vec3::new(-1.0, 0.0, 0.0), Vec3::Z),
|
|
spot_light: SpotLight {
|
|
intensity: 1600.0, // lumens - roughly a 100W non-halogen incandescent bulb
|
|
color: Color::GREEN,
|
|
shadows_enabled: true,
|
|
inner_angle: 0.6,
|
|
outer_angle: 0.8,
|
|
..default()
|
|
},
|
|
..default()
|
|
})
|
|
.with_children(|builder| {
|
|
builder.spawn(PbrBundle {
|
|
transform: Transform::from_rotation(Quat::from_rotation_x(PI / 2.0)),
|
|
mesh: meshes.add(Mesh::from(shape::Capsule {
|
|
depth: 0.125,
|
|
radius: 0.1,
|
|
..default()
|
|
})),
|
|
material: materials.add(StandardMaterial {
|
|
base_color: Color::GREEN,
|
|
emissive: Color::rgba_linear(0.0, 7.13, 0.0, 0.0),
|
|
..default()
|
|
}),
|
|
..default()
|
|
});
|
|
});
|
|
|
|
// blue point light
|
|
commands
|
|
.spawn(PointLightBundle {
|
|
// transform: Transform::from_xyz(5.0, 8.0, 2.0),
|
|
transform: Transform::from_xyz(0.0, 4.0, 0.0),
|
|
point_light: PointLight {
|
|
intensity: 1600.0, // lumens - roughly a 100W non-halogen incandescent bulb
|
|
color: Color::BLUE,
|
|
shadows_enabled: true,
|
|
..default()
|
|
},
|
|
..default()
|
|
})
|
|
.with_children(|builder| {
|
|
builder.spawn(PbrBundle {
|
|
mesh: meshes.add(Mesh::from(shape::UVSphere {
|
|
radius: 0.1,
|
|
..default()
|
|
})),
|
|
material: materials.add(StandardMaterial {
|
|
base_color: Color::BLUE,
|
|
emissive: Color::rgba_linear(0.0, 0.0, 7.13, 0.0),
|
|
..default()
|
|
}),
|
|
..default()
|
|
});
|
|
});
|
|
|
|
// directional 'sun' light
|
|
commands.spawn(DirectionalLightBundle {
|
|
directional_light: DirectionalLight {
|
|
shadows_enabled: true,
|
|
..default()
|
|
},
|
|
transform: Transform {
|
|
translation: Vec3::new(0.0, 2.0, 0.0),
|
|
rotation: Quat::from_rotation_x(-PI / 4.),
|
|
..default()
|
|
},
|
|
// The default cascade config is designed to handle large scenes.
|
|
// As this example has a much smaller world, we can tighten the shadow
|
|
// bounds for better visual quality.
|
|
cascade_shadow_config: CascadeShadowConfigBuilder {
|
|
first_cascade_far_bound: 4.0,
|
|
maximum_distance: 10.0,
|
|
..default()
|
|
}
|
|
.into(),
|
|
..default()
|
|
});
|
|
|
|
// camera
|
|
commands.spawn(Camera3dBundle {
|
|
transform: Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
|
|
..default()
|
|
});
|
|
}
|
|
|
|
fn animate_light_direction(
|
|
time: Res<Time>,
|
|
mut query: Query<&mut Transform, With<DirectionalLight>>,
|
|
) {
|
|
for mut transform in &mut query {
|
|
transform.rotate_y(time.delta_seconds() * 0.5);
|
|
}
|
|
}
|
|
|
|
fn movement(
|
|
input: Res<Input<KeyCode>>,
|
|
time: Res<Time>,
|
|
mut query: Query<&mut Transform, With<Movable>>,
|
|
) {
|
|
for mut transform in &mut query {
|
|
let mut direction = Vec3::ZERO;
|
|
if input.pressed(KeyCode::Up) {
|
|
direction.y += 1.0;
|
|
}
|
|
if input.pressed(KeyCode::Down) {
|
|
direction.y -= 1.0;
|
|
}
|
|
if input.pressed(KeyCode::Left) {
|
|
direction.x -= 1.0;
|
|
}
|
|
if input.pressed(KeyCode::Right) {
|
|
direction.x += 1.0;
|
|
}
|
|
|
|
transform.translation += time.delta_seconds() * 2.0 * direction;
|
|
}
|
|
}
|