Struct AnimationPlayer 

pub struct AnimationPlayer { /* private fields */ }

Animation controls.

Automatically added to any root animations of a scene when it is spawned.

Implementations

impl AnimationPlayer

pub fn start(&mut self, animation: NodeIndex) -> &mut ActiveAnimation

Start playing an animation, restarting it if necessary.

pub fn play(&mut self, animation: NodeIndex) -> &mut ActiveAnimation

Start playing an animation, unless the requested animation is already playing.

Examples found in repository

examples/animation/animated_transform.rs (line 140)

fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<StandardMaterial>>,
    mut animations: ResMut<Assets<AnimationClip>>,
    mut graphs: ResMut<Assets<AnimationGraph>>,
) {
    // Camera
    commands.spawn((
        Camera3d::default(),
        Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
    ));

    // Light
    commands.spawn((
        PointLight {
            intensity: 500_000.0,
            ..default()
        },
        Transform::from_xyz(0.0, 2.5, 0.0),
    ));

    // Let's use the `Name` component to target entities. We can use anything we
    // like, but names are convenient.
    let planet = Name::new("planet");
    let orbit_controller = Name::new("orbit_controller");
    let satellite = Name::new("satellite");

    // Creating the animation
    let mut animation = AnimationClip::default();
    // A curve can modify a single part of a transform: here, the translation.
    let planet_animation_target_id = AnimationTargetId::from_name(&planet);
    animation.add_curve_to_target(
        planet_animation_target_id,
        AnimatableCurve::new(
            animated_field!(Transform::translation),
            UnevenSampleAutoCurve::new([0.0, 1.0, 2.0, 3.0, 4.0].into_iter().zip([
                Vec3::new(1.0, 0.0, 1.0),
                Vec3::new(-1.0, 0.0, 1.0),
                Vec3::new(-1.0, 0.0, -1.0),
                Vec3::new(1.0, 0.0, -1.0),
                // in case seamless looping is wanted, the last keyframe should
                // be the same as the first one
                Vec3::new(1.0, 0.0, 1.0),
            ]))
            .expect("should be able to build translation curve because we pass in valid samples"),
        ),
    );
    // Or it can modify the rotation of the transform.
    // To find the entity to modify, the hierarchy will be traversed looking for
    // an entity with the right name at each level.
    let orbit_controller_animation_target_id =
        AnimationTargetId::from_names([planet.clone(), orbit_controller.clone()].iter());
    animation.add_curve_to_target(
        orbit_controller_animation_target_id,
        AnimatableCurve::new(
            animated_field!(Transform::rotation),
            UnevenSampleAutoCurve::new([0.0, 1.0, 2.0, 3.0, 4.0].into_iter().zip([
                Quat::IDENTITY,
                Quat::from_axis_angle(Vec3::Y, PI / 2.),
                Quat::from_axis_angle(Vec3::Y, PI / 2. * 2.),
                Quat::from_axis_angle(Vec3::Y, PI / 2. * 3.),
                Quat::IDENTITY,
            ]))
            .expect("Failed to build rotation curve"),
        ),
    );
    // If a curve in an animation is shorter than the other, it will not repeat
    // until all other curves are finished. In that case, another animation should
    // be created for each part that would have a different duration / period.
    let satellite_animation_target_id = AnimationTargetId::from_names(
        [planet.clone(), orbit_controller.clone(), satellite.clone()].iter(),
    );
    animation.add_curve_to_target(
        satellite_animation_target_id,
        AnimatableCurve::new(
            animated_field!(Transform::scale),
            UnevenSampleAutoCurve::new(
                [0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0]
                    .into_iter()
                    .zip([
                        Vec3::splat(0.8),
                        Vec3::splat(1.2),
                        Vec3::splat(0.8),
                        Vec3::splat(1.2),
                        Vec3::splat(0.8),
                        Vec3::splat(1.2),
                        Vec3::splat(0.8),
                        Vec3::splat(1.2),
                        Vec3::splat(0.8),
                    ]),
            )
            .expect("Failed to build scale curve"),
        ),
    );
    // There can be more than one curve targeting the same entity path.
    animation.add_curve_to_target(
        AnimationTargetId::from_names(
            [planet.clone(), orbit_controller.clone(), satellite.clone()].iter(),
        ),
        AnimatableCurve::new(
            animated_field!(Transform::rotation),
            UnevenSampleAutoCurve::new([0.0, 1.0, 2.0, 3.0, 4.0].into_iter().zip([
                Quat::IDENTITY,
                Quat::from_axis_angle(Vec3::Y, PI / 2.),
                Quat::from_axis_angle(Vec3::Y, PI / 2. * 2.),
                Quat::from_axis_angle(Vec3::Y, PI / 2. * 3.),
                Quat::IDENTITY,
            ]))
            .expect("should be able to build translation curve because we pass in valid samples"),
        ),
    );

    // Create the animation graph
    let (graph, animation_index) = AnimationGraph::from_clip(animations.add(animation));

    // Create the animation player, and set it to repeat
    let mut player = AnimationPlayer::default();
    player.play(animation_index).repeat();

    // Create the scene that will be animated
    // First entity is the planet
    let planet_entity = commands
        .spawn((
            Mesh3d(meshes.add(Sphere::default())),
            MeshMaterial3d(materials.add(Color::srgb(0.8, 0.7, 0.6))),
            // Add the animation graph and player
            planet,
            AnimationGraphHandle(graphs.add(graph)),
            player,
        ))
        .id();
    commands.entity(planet_entity).insert((
        planet_animation_target_id,
        AnimatedBy(planet_entity),
        children![(
            Transform::default(),
            Visibility::default(),
            orbit_controller,
            orbit_controller_animation_target_id,
            AnimatedBy(planet_entity),
            children![(
                Mesh3d(meshes.add(Cuboid::new(0.5, 0.5, 0.5))),
                MeshMaterial3d(materials.add(Color::srgb(0.3, 0.9, 0.3))),
                Transform::from_xyz(1.5, 0.0, 0.0),
                satellite_animation_target_id,
                AnimatedBy(planet_entity),
                satellite,
            )],
        )],
    ));
}

pub fn stop(&mut self, animation: NodeIndex) -> &mut AnimationPlayer

Stops playing the given animation, removing it from the list of playing animations.

pub fn stop_all(&mut self) -> &mut AnimationPlayer

Stops all currently-playing animations.

pub fn playing_animations( &self, ) -> impl Iterator<Item = (&NodeIndex, &ActiveAnimation)>

Iterates through all animations that this AnimationPlayer is currently playing.

pub fn playing_animations_mut( &mut self, ) -> impl Iterator<Item = (&NodeIndex, &mut ActiveAnimation)>

Iterates through all animations that this AnimationPlayer is currently playing, mutably.

pub fn is_playing_animation(&self, animation: NodeIndex) -> bool

Returns true if the animation is currently playing or paused, or false if the animation is stopped.

pub fn all_finished(&self) -> bool

Check if all playing animations have finished, according to the repetition behavior.

pub fn all_paused(&self) -> bool

Check if all playing animations are paused.

pub fn pause_all(&mut self) -> &mut AnimationPlayer

Pause all playing animations.

pub fn resume_all(&mut self) -> &mut AnimationPlayer

Resume all active animations.

pub fn rewind_all(&mut self) -> &mut AnimationPlayer

Rewinds all active animations.

pub fn adjust_speeds(&mut self, factor: f32) -> &mut AnimationPlayer

Multiplies the speed of all active animations by the given factor.

pub fn seek_all_by(&mut self, amount: f32) -> &mut AnimationPlayer

Seeks all active animations forward or backward by the same amount.

To seek forward, pass a positive value; to seek negative, pass a negative value. Values below 0.0 or beyond the end of the animation clip are clamped appropriately.

pub fn animation(&self, animation: NodeIndex) -> Option<&ActiveAnimation>

Returns the ActiveAnimation associated with the given animation node if it’s currently playing.

If the animation isn’t currently active, returns None.

pub fn animation_mut( &mut self, animation: NodeIndex, ) -> Option<&mut ActiveAnimation>

Returns a mutable reference to the ActiveAnimation associated with the given animation node if it’s currently active.

If the animation isn’t currently active, returns None.

Trait Implementations

impl Clone for AnimationPlayer

fn clone(&self) -> AnimationPlayer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &AnimationPlayer)

Performs copy-assignment from source.

impl Component for AnimationPlayer

where AnimationPlayer: Send + Sync + 'static,

const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::Table

A constant indicating the storage type used for this component.

type Mutability = Mutable

A marker type to assist Bevy with determining if this component is mutable, or immutable. Mutable components will have Component<Mutability = Mutable>, while immutable components will instead have Component<Mutability = Immutable>.

fn register_required_components( _requiree: ComponentId, required_components: &mut RequiredComponentsRegistrator<'_, '_>, )

Registers required components.

fn clone_behavior() -> ComponentCloneBehavior

Called when registering this component, allowing to override clone function (or disable cloning altogether) for this component.

fn relationship_accessor() -> Option<ComponentRelationshipAccessor<AnimationPlayer>>

Returns ComponentRelationshipAccessor required for working with relationships in dynamic contexts.

fn on_add() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_add ComponentHook for this Component if one is defined.

fn on_insert() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_insert ComponentHook for this Component if one is defined.

fn on_replace() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_replace ComponentHook for this Component if one is defined.

fn on_remove() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_remove ComponentHook for this Component if one is defined.

fn on_despawn() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_despawn ComponentHook for this Component if one is defined.

fn map_entities<E>(_this: &mut Self, _mapper: &mut E)

where E: EntityMapper,

Maps the entities on this component using the given EntityMapper. This is used to remap entities in contexts like scenes and entity cloning. When deriving Component, this is populated by annotating fields containing entities with #[entities]

impl Default for AnimationPlayer

fn default() -> AnimationPlayer

Returns the “default value” for a type.

impl FromArg for AnimationPlayer

type This<'from_arg> = AnimationPlayer

The type to convert into.

fn from_arg( arg: Arg<'_>, ) -> Result<<AnimationPlayer as FromArg>::This<'_>, ArgError>

Creates an item from an argument.

impl FromReflect for AnimationPlayer

fn from_reflect( reflect: &(dyn PartialReflect + 'static), ) -> Option<AnimationPlayer>

Constructs a concrete instance of Self from a reflected value.

fn take_from_reflect( reflect: Box<dyn PartialReflect>, ) -> Result<Self, Box<dyn PartialReflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails.

impl GetOwnership for AnimationPlayer

fn ownership() -> Ownership

Returns the ownership of Self.

impl GetTypeRegistration for AnimationPlayer

fn get_type_registration() -> TypeRegistration

Returns the default TypeRegistration for this type.

fn register_type_dependencies(registry: &mut TypeRegistry)

Registers other types needed by this type.

impl IntoReturn for AnimationPlayer

fn into_return<'into_return>(self) -> Return<'into_return>

where AnimationPlayer: 'into_return,

Converts Self into a Return value.

impl PartialReflect for AnimationPlayer

fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value.

fn try_apply( &mut self, value: &(dyn PartialReflect + 'static), ) -> Result<(), ApplyError>

Tries to apply a reflected value to this value.

fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type.

fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type.

fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type.

fn reflect_owned(self: Box<AnimationPlayer>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type.

fn try_into_reflect( self: Box<AnimationPlayer>, ) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>

Attempts to cast this type to a boxed, fully-reflected value.

fn try_as_reflect(&self) -> Option<&(dyn Reflect + 'static)>

Attempts to cast this type to a fully-reflected value.

fn try_as_reflect_mut(&mut self) -> Option<&mut (dyn Reflect + 'static)>

Attempts to cast this type to a mutable, fully-reflected value.

fn into_partial_reflect(self: Box<AnimationPlayer>) -> Box<dyn PartialReflect>

Casts this type to a boxed, reflected value.

fn as_partial_reflect(&self) -> &(dyn PartialReflect + 'static)

Casts this type to a reflected value.

fn as_partial_reflect_mut(&mut self) -> &mut (dyn PartialReflect + 'static)

Casts this type to a mutable, reflected value.

fn reflect_partial_eq( &self, value: &(dyn PartialReflect + 'static), ) -> Option<bool>

Returns a “partial equality” comparison result.

fn reflect_clone(&self) -> Result<Box<dyn Reflect>, ReflectCloneError>

Attempts to clone Self using reflection.

fn apply(&mut self, value: &(dyn PartialReflect + 'static))

Applies a reflected value to this value.

fn to_dynamic(&self) -> Box<dyn PartialReflect>

Converts this reflected value into its dynamic representation based on its kind.

fn reflect_clone_and_take<T>(&self) -> Result<T, ReflectCloneError>

where T: 'static, Self: Sized + TypePath,

For a type implementing PartialReflect, combines reflect_clone and take in a useful fashion, automatically constructing an appropriate ReflectCloneError if the downcast fails.

fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type).

fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Debug formatter for the value.

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl Reflect for AnimationPlayer

fn into_any(self: Box<AnimationPlayer>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.

fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.

fn into_reflect(self: Box<AnimationPlayer>) -> Box<dyn Reflect>

Casts this type to a boxed, fully-reflected value.

fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a fully-reflected value.

fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable, fully-reflected value.

fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value.

impl Struct for AnimationPlayer

fn field(&self, name: &str) -> Option<&(dyn PartialReflect + 'static)>

Returns a reference to the value of the field named name as a &dyn PartialReflect.

fn field_mut( &mut self, name: &str, ) -> Option<&mut (dyn PartialReflect + 'static)>

Returns a mutable reference to the value of the field named name as a &mut dyn PartialReflect.

fn field_at(&self, index: usize) -> Option<&(dyn PartialReflect + 'static)>

Returns a reference to the value of the field with index index as a &dyn PartialReflect.

fn field_at_mut( &mut self, index: usize, ) -> Option<&mut (dyn PartialReflect + 'static)>

Returns a mutable reference to the value of the field with index index as a &mut dyn PartialReflect.

fn name_at(&self, index: usize) -> Option<&str>

Returns the name of the field with index index.

fn field_len(&self) -> usize

Returns the number of fields in the struct.

fn iter_fields(&self) -> FieldIter<'_>

Returns an iterator over the values of the reflectable fields for this struct.

fn to_dynamic_struct(&self) -> DynamicStruct

Creates a new DynamicStruct from this struct.

fn get_represented_struct_info(&self) -> Option<&'static StructInfo>

Will return None if TypeInfo is not available.

impl TypePath for AnimationPlayer

fn type_path() -> &'static str

Returns the fully qualified path of the underlying type.

fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type.

fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous.

fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous.

fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous.

impl Typed for AnimationPlayer

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.