7482a0d26d
Fixes #15834 ## Migration Guide The APIs of `Time`, `Timer` and `Stopwatch` have been cleaned up for consistency with each other and the standard library's `Duration` type. The following methods have been renamed: - `Stowatch::paused` -> `Stopwatch::is_paused` - `Time::elapsed_seconds` -> `Time::elasped_secs` (including `_f64` and `_wrapped` variants)
60 lines
1.7 KiB
Rust
60 lines
1.7 KiB
Rust
//! Shows how to animate material properties
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use bevy::prelude::*;
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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.add_systems(Startup, setup)
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.add_systems(Update, animate_materials)
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.run();
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}
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fn setup(
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mut commands: Commands,
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asset_server: Res<AssetServer>,
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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.spawn((
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Camera3d::default(),
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Transform::from_xyz(3.0, 1.0, 3.0).looking_at(Vec3::new(0.0, -0.5, 0.0), Vec3::Y),
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EnvironmentMapLight {
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diffuse_map: asset_server.load("environment_maps/pisa_diffuse_rgb9e5_zstd.ktx2"),
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specular_map: asset_server.load("environment_maps/pisa_specular_rgb9e5_zstd.ktx2"),
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intensity: 2_000.0,
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..default()
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},
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));
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let cube = meshes.add(Cuboid::new(0.5, 0.5, 0.5));
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const GOLDEN_ANGLE: f32 = 137.507_77;
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let mut hsla = Hsla::hsl(0.0, 1.0, 0.5);
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for x in -1..2 {
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for z in -1..2 {
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commands.spawn((
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Mesh3d(cube.clone()),
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MeshMaterial3d(materials.add(Color::from(hsla))),
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Transform::from_translation(Vec3::new(x as f32, 0.0, z as f32)),
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));
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hsla = hsla.rotate_hue(GOLDEN_ANGLE);
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}
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}
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}
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fn animate_materials(
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material_handles: Query<&MeshMaterial3d<StandardMaterial>>,
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time: Res<Time>,
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mut materials: ResMut<Assets<StandardMaterial>>,
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) {
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for material_handle in material_handles.iter() {
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if let Some(material) = materials.get_mut(material_handle) {
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if let Color::Hsla(ref mut hsla) = material.base_color {
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*hsla = hsla.rotate_hue(time.delta_secs() * 100.0);
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}
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}
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}
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}
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