Struct FilteredEntityMut 

pub struct FilteredEntityMut<'w, 's> { /* private fields */ }

Provides mutable access to a single entity and some of its components defined by the contained Access.

To define the access when used as a QueryData, use a QueryBuilder or QueryParamBuilder. The FilteredEntityMut must be the entire QueryData, and not nested inside a tuple with other data.

// This gives the `FilteredEntityMut` access to `&mut A`.
let mut query = QueryBuilder::<FilteredEntityMut>::new(&mut world)
    .data::<&mut A>()
    .build();

let mut filtered_entity: FilteredEntityMut = query.single_mut(&mut world).unwrap();
let component: Mut<A> = filtered_entity.get_mut().unwrap();

Implementations

impl<'w, 's> FilteredEntityMut<'w, 's>

pub fn reborrow(&mut self) -> FilteredEntityMut<'_, 's>

Returns a new instance with a shorter lifetime. This is useful if you have &mut FilteredEntityMut, but you need FilteredEntityMut.

pub fn as_readonly(&self) -> FilteredEntityRef<'_, 's>

Gets read-only access to all of the entity’s components.

pub fn id(&self) -> Entity

Returns the ID of the current entity.

Examples found in repository

examples/ecs/dynamic.rs (line 190)

fn main() {
    let mut world = World::new();
    let mut lines = std::io::stdin().lines();
    let mut component_names = HashMap::<String, ComponentId>::new();
    let mut component_info = HashMap::<ComponentId, ComponentInfo>::new();

    println!("{PROMPT}");
    loop {
        print!("\n> ");
        let _ = std::io::stdout().flush();
        let Some(Ok(line)) = lines.next() else {
            return;
        };

        if line.is_empty() {
            return;
        };

        let Some((first, rest)) = line.trim().split_once(|c: char| c.is_whitespace()) else {
            match &line.chars().next() {
                Some('c') => println!("{COMPONENT_PROMPT}"),
                Some('s') => println!("{ENTITY_PROMPT}"),
                Some('q') => println!("{QUERY_PROMPT}"),
                _ => println!("{PROMPT}"),
            }
            continue;
        };

        match &first[0..1] {
            "c" => {
                rest.split(',').for_each(|component| {
                    let mut component = component.split_whitespace();
                    let Some(name) = component.next() else {
                        return;
                    };
                    let size = match component.next().map(str::parse) {
                        Some(Ok(size)) => size,
                        _ => 0,
                    };
                    // Register our new component to the world with a layout specified by it's size
                    // SAFETY: [u64] is Send + Sync
                    let id = world.register_component_with_descriptor(unsafe {
                        ComponentDescriptor::new_with_layout(
                            name.to_string(),
                            StorageType::Table,
                            Layout::array::<u64>(size).unwrap(),
                            None,
                            true,
                            ComponentCloneBehavior::Default,
                        )
                    });
                    let Some(info) = world.components().get_info(id) else {
                        return;
                    };
                    component_names.insert(name.to_string(), id);
                    component_info.insert(id, info.clone());
                    println!("Component {} created with id: {}", name, id.index());
                });
            }
            "s" => {
                let mut to_insert_ids = Vec::new();
                let mut to_insert_data = Vec::new();
                rest.split(',').for_each(|component| {
                    let mut component = component.split_whitespace();
                    let Some(name) = component.next() else {
                        return;
                    };

                    // Get the id for the component with the given name
                    let Some(&id) = component_names.get(name) else {
                        println!("Component {name} does not exist");
                        return;
                    };

                    // Calculate the length for the array based on the layout created for this component id
                    let info = world.components().get_info(id).unwrap();
                    let len = info.layout().size() / size_of::<u64>();
                    let mut values: Vec<u64> = component
                        .take(len)
                        .filter_map(|value| value.parse::<u64>().ok())
                        .collect();
                    values.resize(len, 0);

                    // Collect the id and array to be inserted onto our entity
                    to_insert_ids.push(id);
                    to_insert_data.push(values);
                });

                let mut entity = world.spawn_empty();

                // Construct an `OwningPtr` for each component in `to_insert_data`
                let to_insert_ptr = to_owning_ptrs(&mut to_insert_data);

                // SAFETY:
                // - Component ids have been taken from the same world
                // - Each array is created to the layout specified in the world
                unsafe {
                    entity.insert_by_ids(&to_insert_ids, to_insert_ptr.into_iter());
                }

                println!("Entity spawned with id: {}", entity.id());
            }
            "q" => {
                let mut builder = QueryBuilder::<FilteredEntityMut>::new(&mut world);
                parse_query(rest, &mut builder, &component_names);
                let mut query = builder.build();
                query.iter_mut(&mut world).for_each(|filtered_entity| {
                    let terms = filtered_entity
                        .access()
                        .try_iter_component_access()
                        .unwrap()
                        .map(|component_access| {
                            let id = *component_access.index();
                            let ptr = filtered_entity.get_by_id(id).unwrap();
                            let info = component_info.get(&id).unwrap();
                            let len = info.layout().size() / size_of::<u64>();

                            // SAFETY:
                            // - All components are created with layout [u64]
                            // - len is calculated from the component descriptor
                            let data = unsafe {
                                std::slice::from_raw_parts_mut(
                                    ptr.assert_unique().as_ptr().cast::<u64>(),
                                    len,
                                )
                            };

                            // If we have write access, increment each value once
                            if matches!(component_access, ComponentAccessKind::Exclusive(_)) {
                                data.iter_mut().for_each(|data| {
                                    *data += 1;
                                });
                            }

                            format!("{}: {:?}", info.name(), data[0..len].to_vec())
                        })
                        .collect::<Vec<_>>()
                        .join(", ");

                    println!("{}: {}", filtered_entity.id(), terms);
                });
            }
            _ => continue,
        }
    }
}

pub fn location(&self) -> EntityLocation

Gets metadata indicating the location where the current entity is stored.

pub fn archetype(&self) -> &Archetype

Returns the archetype that the current entity belongs to.

pub fn access(&self) -> &Access

Returns a reference to the underlying Access.

Examples found in repository

examples/ecs/dynamic.rs (line 159)

fn main() {
    let mut world = World::new();
    let mut lines = std::io::stdin().lines();
    let mut component_names = HashMap::<String, ComponentId>::new();
    let mut component_info = HashMap::<ComponentId, ComponentInfo>::new();

    println!("{PROMPT}");
    loop {
        print!("\n> ");
        let _ = std::io::stdout().flush();
        let Some(Ok(line)) = lines.next() else {
            return;
        };

        if line.is_empty() {
            return;
        };

        let Some((first, rest)) = line.trim().split_once(|c: char| c.is_whitespace()) else {
            match &line.chars().next() {
                Some('c') => println!("{COMPONENT_PROMPT}"),
                Some('s') => println!("{ENTITY_PROMPT}"),
                Some('q') => println!("{QUERY_PROMPT}"),
                _ => println!("{PROMPT}"),
            }
            continue;
        };

        match &first[0..1] {
            "c" => {
                rest.split(',').for_each(|component| {
                    let mut component = component.split_whitespace();
                    let Some(name) = component.next() else {
                        return;
                    };
                    let size = match component.next().map(str::parse) {
                        Some(Ok(size)) => size,
                        _ => 0,
                    };
                    // Register our new component to the world with a layout specified by it's size
                    // SAFETY: [u64] is Send + Sync
                    let id = world.register_component_with_descriptor(unsafe {
                        ComponentDescriptor::new_with_layout(
                            name.to_string(),
                            StorageType::Table,
                            Layout::array::<u64>(size).unwrap(),
                            None,
                            true,
                            ComponentCloneBehavior::Default,
                        )
                    });
                    let Some(info) = world.components().get_info(id) else {
                        return;
                    };
                    component_names.insert(name.to_string(), id);
                    component_info.insert(id, info.clone());
                    println!("Component {} created with id: {}", name, id.index());
                });
            }
            "s" => {
                let mut to_insert_ids = Vec::new();
                let mut to_insert_data = Vec::new();
                rest.split(',').for_each(|component| {
                    let mut component = component.split_whitespace();
                    let Some(name) = component.next() else {
                        return;
                    };

                    // Get the id for the component with the given name
                    let Some(&id) = component_names.get(name) else {
                        println!("Component {name} does not exist");
                        return;
                    };

                    // Calculate the length for the array based on the layout created for this component id
                    let info = world.components().get_info(id).unwrap();
                    let len = info.layout().size() / size_of::<u64>();
                    let mut values: Vec<u64> = component
                        .take(len)
                        .filter_map(|value| value.parse::<u64>().ok())
                        .collect();
                    values.resize(len, 0);

                    // Collect the id and array to be inserted onto our entity
                    to_insert_ids.push(id);
                    to_insert_data.push(values);
                });

                let mut entity = world.spawn_empty();

                // Construct an `OwningPtr` for each component in `to_insert_data`
                let to_insert_ptr = to_owning_ptrs(&mut to_insert_data);

                // SAFETY:
                // - Component ids have been taken from the same world
                // - Each array is created to the layout specified in the world
                unsafe {
                    entity.insert_by_ids(&to_insert_ids, to_insert_ptr.into_iter());
                }

                println!("Entity spawned with id: {}", entity.id());
            }
            "q" => {
                let mut builder = QueryBuilder::<FilteredEntityMut>::new(&mut world);
                parse_query(rest, &mut builder, &component_names);
                let mut query = builder.build();
                query.iter_mut(&mut world).for_each(|filtered_entity| {
                    let terms = filtered_entity
                        .access()
                        .try_iter_component_access()
                        .unwrap()
                        .map(|component_access| {
                            let id = *component_access.index();
                            let ptr = filtered_entity.get_by_id(id).unwrap();
                            let info = component_info.get(&id).unwrap();
                            let len = info.layout().size() / size_of::<u64>();

                            // SAFETY:
                            // - All components are created with layout [u64]
                            // - len is calculated from the component descriptor
                            let data = unsafe {
                                std::slice::from_raw_parts_mut(
                                    ptr.assert_unique().as_ptr().cast::<u64>(),
                                    len,
                                )
                            };

                            // If we have write access, increment each value once
                            if matches!(component_access, ComponentAccessKind::Exclusive(_)) {
                                data.iter_mut().for_each(|data| {
                                    *data += 1;
                                });
                            }

                            format!("{}: {:?}", info.name(), data[0..len].to_vec())
                        })
                        .collect::<Vec<_>>()
                        .join(", ");

                    println!("{}: {}", filtered_entity.id(), terms);
                });
            }
            _ => continue,
        }
    }
}

pub fn contains<T>(&self) -> bool

where T: Component,

Returns true if the current entity has a component of type T. Otherwise, this returns false.

Notes

If you do not know the concrete type of a component, consider using Self::contains_id or Self::contains_type_id.

pub fn contains_id(&self, component_id: ComponentId) -> bool

Returns true if the current entity has a component identified by component_id. Otherwise, this returns false.

Notes

• If you know the concrete type of the component, you should prefer Self::contains.
• If you know the component’s TypeId but not its ComponentId, consider using Self::contains_type_id.

pub fn contains_type_id(&self, type_id: TypeId) -> bool

Returns true if the current entity has a component with the type identified by type_id. Otherwise, this returns false.

Notes

• If you know the concrete type of the component, you should prefer Self::contains.
• If you have a ComponentId instead of a TypeId, consider using Self::contains_id.

pub fn get<T>(&self) -> Option<&T>

where T: Component,

Gets access to the component of type T for the current entity. Returns None if the entity does not have a component of type T.

pub fn get_ref<T>(&self) -> Option<Ref<'_, T>>

where T: Component,

Gets access to the component of type T for the current entity, including change detection information as a Ref.

Returns None if the entity does not have a component of type T.

pub fn get_mut<T>(&mut self) -> Option<Mut<'_, T>>

where T: Component<Mutability = Mutable>,

Gets mutable access to the component of type T for the current entity. Returns None if the entity does not have a component of type T.

pub fn into_mut<T>(self) -> Option<Mut<'w, T>>

where T: Component<Mutability = Mutable>,

Consumes self and gets mutable access to the component of type T with the world 'w lifetime for the current entity. Returns None if the entity does not have a component of type T.

pub unsafe fn into_mut_assume_mutable<T>(self) -> Option<Mut<'w, T>>

where T: Component,

Consumes self and gets mutable access to the component of type T with the world 'w lifetime for the current entity. Returns None if the entity does not have a component of type T.

Safety

• T must be a mutable component

pub fn get_change_ticks<T>(&self) -> Option<ComponentTicks>

where T: Component,

Retrieves the change ticks for the given component. This can be useful for implementing change detection in custom runtimes.

pub fn get_change_ticks_by_id( &self, component_id: ComponentId, ) -> Option<ComponentTicks>

Retrieves the change ticks for the given ComponentId. This can be useful for implementing change detection in custom runtimes.

You should prefer to use the typed API Self::get_change_ticks where possible and only use this in cases where the actual component types are not known at compile time.

pub fn get_by_id(&self, component_id: ComponentId) -> Option<Ptr<'_>>

Gets the component of the given ComponentId from the entity.

You should prefer to use the typed API Self::get where possible and only use this in cases where the actual component types are not known at compile time.

Unlike FilteredEntityMut::get, this returns a raw pointer to the component, which is only valid while the FilteredEntityMut is alive.

Examples found in repository

examples/stress_tests/many_components.rs (line 51)

fn base_system(access_components: In<Vec<ComponentId>>, mut query: Query<FilteredEntityMut>) {
    #[cfg(feature = "trace")]
    let _span = tracing::info_span!("base_system", components = ?access_components.0, count = query.iter().len()).entered();

    for mut filtered_entity in &mut query {
        // We calculate Faulhaber's formula mod 256 with n = value and p = exponent.
        // See https://en.wikipedia.org/wiki/Faulhaber%27s_formula
        // The time is takes to compute this depends on the number of entities and the values in
        // each entity. This is to ensure that each system takes a different amount of time.
        let mut total: Wrapping<u8> = Wrapping(0);
        let mut exponent: u32 = 1;
        for component_id in &access_components.0 {
            // find the value of the component
            let ptr = filtered_entity.get_by_id(*component_id).unwrap();

            // SAFETY: All components have a u8 layout
            let value: u8 = unsafe { *ptr.deref::<u8>() };

            for i in 0..=value {
                let mut product = Wrapping(1);
                for _ in 1..=exponent {
                    product *= Wrapping(i);
                }
                total += product;
            }
            exponent += 1;
        }

        // we assign this value to all the components we can write to
        for component_id in &access_components.0 {
            if let Some(ptr) = filtered_entity.get_mut_by_id(*component_id) {
                // SAFETY: All components have a u8 layout
                unsafe {
                    let mut value = ptr.with_type::<u8>();
                    *value = total.0;
                }
            }
        }
    }
}

examples/ecs/dynamic.rs (line 164)

fn main() {
    let mut world = World::new();
    let mut lines = std::io::stdin().lines();
    let mut component_names = HashMap::<String, ComponentId>::new();
    let mut component_info = HashMap::<ComponentId, ComponentInfo>::new();

    println!("{PROMPT}");
    loop {
        print!("\n> ");
        let _ = std::io::stdout().flush();
        let Some(Ok(line)) = lines.next() else {
            return;
        };

        if line.is_empty() {
            return;
        };

        let Some((first, rest)) = line.trim().split_once(|c: char| c.is_whitespace()) else {
            match &line.chars().next() {
                Some('c') => println!("{COMPONENT_PROMPT}"),
                Some('s') => println!("{ENTITY_PROMPT}"),
                Some('q') => println!("{QUERY_PROMPT}"),
                _ => println!("{PROMPT}"),
            }
            continue;
        };

        match &first[0..1] {
            "c" => {
                rest.split(',').for_each(|component| {
                    let mut component = component.split_whitespace();
                    let Some(name) = component.next() else {
                        return;
                    };
                    let size = match component.next().map(str::parse) {
                        Some(Ok(size)) => size,
                        _ => 0,
                    };
                    // Register our new component to the world with a layout specified by it's size
                    // SAFETY: [u64] is Send + Sync
                    let id = world.register_component_with_descriptor(unsafe {
                        ComponentDescriptor::new_with_layout(
                            name.to_string(),
                            StorageType::Table,
                            Layout::array::<u64>(size).unwrap(),
                            None,
                            true,
                            ComponentCloneBehavior::Default,
                        )
                    });
                    let Some(info) = world.components().get_info(id) else {
                        return;
                    };
                    component_names.insert(name.to_string(), id);
                    component_info.insert(id, info.clone());
                    println!("Component {} created with id: {}", name, id.index());
                });
            }
            "s" => {
                let mut to_insert_ids = Vec::new();
                let mut to_insert_data = Vec::new();
                rest.split(',').for_each(|component| {
                    let mut component = component.split_whitespace();
                    let Some(name) = component.next() else {
                        return;
                    };

                    // Get the id for the component with the given name
                    let Some(&id) = component_names.get(name) else {
                        println!("Component {name} does not exist");
                        return;
                    };

                    // Calculate the length for the array based on the layout created for this component id
                    let info = world.components().get_info(id).unwrap();
                    let len = info.layout().size() / size_of::<u64>();
                    let mut values: Vec<u64> = component
                        .take(len)
                        .filter_map(|value| value.parse::<u64>().ok())
                        .collect();
                    values.resize(len, 0);

                    // Collect the id and array to be inserted onto our entity
                    to_insert_ids.push(id);
                    to_insert_data.push(values);
                });

                let mut entity = world.spawn_empty();

                // Construct an `OwningPtr` for each component in `to_insert_data`
                let to_insert_ptr = to_owning_ptrs(&mut to_insert_data);

                // SAFETY:
                // - Component ids have been taken from the same world
                // - Each array is created to the layout specified in the world
                unsafe {
                    entity.insert_by_ids(&to_insert_ids, to_insert_ptr.into_iter());
                }

                println!("Entity spawned with id: {}", entity.id());
            }
            "q" => {
                let mut builder = QueryBuilder::<FilteredEntityMut>::new(&mut world);
                parse_query(rest, &mut builder, &component_names);
                let mut query = builder.build();
                query.iter_mut(&mut world).for_each(|filtered_entity| {
                    let terms = filtered_entity
                        .access()
                        .try_iter_component_access()
                        .unwrap()
                        .map(|component_access| {
                            let id = *component_access.index();
                            let ptr = filtered_entity.get_by_id(id).unwrap();
                            let info = component_info.get(&id).unwrap();
                            let len = info.layout().size() / size_of::<u64>();

                            // SAFETY:
                            // - All components are created with layout [u64]
                            // - len is calculated from the component descriptor
                            let data = unsafe {
                                std::slice::from_raw_parts_mut(
                                    ptr.assert_unique().as_ptr().cast::<u64>(),
                                    len,
                                )
                            };

                            // If we have write access, increment each value once
                            if matches!(component_access, ComponentAccessKind::Exclusive(_)) {
                                data.iter_mut().for_each(|data| {
                                    *data += 1;
                                });
                            }

                            format!("{}: {:?}", info.name(), data[0..len].to_vec())
                        })
                        .collect::<Vec<_>>()
                        .join(", ");

                    println!("{}: {}", filtered_entity.id(), terms);
                });
            }
            _ => continue,
        }
    }
}

pub fn get_mut_by_id( &mut self, component_id: ComponentId, ) -> Option<MutUntyped<'_>>

Gets a MutUntyped of the component of the given ComponentId from the entity.

You should prefer to use the typed API Self::get_mut where possible and only use this in cases where the actual component types are not known at compile time.

Unlike FilteredEntityMut::get_mut, this returns a raw pointer to the component, which is only valid while the FilteredEntityMut is alive.

Examples found in repository

examples/stress_tests/many_components.rs (line 68)

fn base_system(access_components: In<Vec<ComponentId>>, mut query: Query<FilteredEntityMut>) {
    #[cfg(feature = "trace")]
    let _span = tracing::info_span!("base_system", components = ?access_components.0, count = query.iter().len()).entered();

    for mut filtered_entity in &mut query {
        // We calculate Faulhaber's formula mod 256 with n = value and p = exponent.
        // See https://en.wikipedia.org/wiki/Faulhaber%27s_formula
        // The time is takes to compute this depends on the number of entities and the values in
        // each entity. This is to ensure that each system takes a different amount of time.
        let mut total: Wrapping<u8> = Wrapping(0);
        let mut exponent: u32 = 1;
        for component_id in &access_components.0 {
            // find the value of the component
            let ptr = filtered_entity.get_by_id(*component_id).unwrap();

            // SAFETY: All components have a u8 layout
            let value: u8 = unsafe { *ptr.deref::<u8>() };

            for i in 0..=value {
                let mut product = Wrapping(1);
                for _ in 1..=exponent {
                    product *= Wrapping(i);
                }
                total += product;
            }
            exponent += 1;
        }

        // we assign this value to all the components we can write to
        for component_id in &access_components.0 {
            if let Some(ptr) = filtered_entity.get_mut_by_id(*component_id) {
                // SAFETY: All components have a u8 layout
                unsafe {
                    let mut value = ptr.with_type::<u8>();
                    *value = total.0;
                }
            }
        }
    }
}

pub fn spawned_by(&self) -> MaybeLocation

Returns the source code location from which this entity has last been spawned.

pub fn spawn_tick(&self) -> Tick

Returns the Tick at which this entity has been spawned.

Trait Implementations

impl ContainsEntity for FilteredEntityMut<'_, '_>

fn entity(&self) -> Entity

Returns the contained entity.

impl<'w, 's, B> From<&'w EntityMutExcept<'_, 's, B>> for FilteredEntityMut<'w, 's>

where B: Bundle,

fn from(value: &'w EntityMutExcept<'_, 's, B>) -> FilteredEntityMut<'w, 's>

Converts to this type from the input type.

impl<'w, 's> From<&'w FilteredEntityMut<'_, 's>> for FilteredEntityRef<'w, 's>

fn from(entity: &'w FilteredEntityMut<'_, 's>) -> FilteredEntityRef<'w, 's>

Converts to this type from the input type.

impl<'a> From<&'a mut EntityMut<'_>> for FilteredEntityMut<'a, 'static>

fn from(entity: &'a mut EntityMut<'_>) -> FilteredEntityMut<'a, 'static>

Converts to this type from the input type.

impl<'a> From<&'a mut EntityWorldMut<'_>> for FilteredEntityMut<'a, 'static>

fn from(entity: &'a mut EntityWorldMut<'_>) -> FilteredEntityMut<'a, 'static>

Converts to this type from the input type.

impl<'a> From<EntityMut<'a>> for FilteredEntityMut<'a, 'static>

fn from(entity: EntityMut<'a>) -> FilteredEntityMut<'a, 'static>

Converts to this type from the input type.

impl<'a> From<EntityWorldMut<'a>> for FilteredEntityMut<'a, 'static>

fn from(entity: EntityWorldMut<'a>) -> FilteredEntityMut<'a, 'static>

Converts to this type from the input type.

impl<'w, 's> From<FilteredEntityMut<'w, 's>> for FilteredEntityRef<'w, 's>

fn from(entity: FilteredEntityMut<'w, 's>) -> FilteredEntityRef<'w, 's>

Converts to this type from the input type.

impl Hash for FilteredEntityMut<'_, '_>

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for FilteredEntityMut<'_, '_>

fn cmp(&self, other: &FilteredEntityMut<'_, '_>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for FilteredEntityMut<'_, '_>

fn eq(&self, other: &FilteredEntityMut<'_, '_>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for FilteredEntityMut<'_, '_>

fn partial_cmp(&self, other: &FilteredEntityMut<'_, '_>) -> Option<Ordering>

FilteredEntityMut’s comparison trait implementations match the underlying Entity, and cannot discern between different worlds.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, 'b> QueryData for FilteredEntityMut<'a, 'b>

SAFETY: access of FilteredEntityRef is a subset of FilteredEntityMut

const IS_READ_ONLY: bool = false

True if this query is read-only and may not perform mutable access.

type ReadOnly = FilteredEntityRef<'a, 'b>

The read-only variant of this QueryData, which satisfies the ReadOnlyQueryData trait.

type Item<'w, 's> = FilteredEntityMut<'w, 's>

The item returned by this WorldQuery This will be the data retrieved by the query, and is visible to the end user when calling e.g. Query<Self>::get.

fn shrink<'wlong, 'wshort, 's>( item: <FilteredEntityMut<'a, 'b> as QueryData>::Item<'wlong, 's>, ) -> <FilteredEntityMut<'a, 'b> as QueryData>::Item<'wshort, 's>

where 'wlong: 'wshort,

This function manually implements subtyping for the query items.

fn provide_extra_access( state: &mut <FilteredEntityMut<'a, 'b> as WorldQuery>::State, access: &mut Access, available_access: &Access, )

Offers additional access above what we requested in update_component_access. Implementations may add additional access that is a subset of available_access and does not conflict with anything in access, and must update access to include that access.

unsafe fn fetch<'w, 's>( access: &'s <FilteredEntityMut<'a, 'b> as WorldQuery>::State, fetch: &mut <FilteredEntityMut<'a, 'b> as WorldQuery>::Fetch<'w>, entity: Entity, _table_row: TableRow, ) -> <FilteredEntityMut<'a, 'b> as QueryData>::Item<'w, 's>

Fetch Self::Item for either the given entity in the current Table, or for the given entity in the current Archetype. This must always be called after WorldQuery::set_table with a table_row in the range of the current Table or after WorldQuery::set_archetype with an entity in the current archetype. Accesses components registered in WorldQuery::update_component_access.

impl<'a> TryFrom<&'a FilteredEntityMut<'_, '_>> for EntityRef<'a>

type Error = TryFromFilteredError

The type returned in the event of a conversion error.

fn try_from( entity: &'a FilteredEntityMut<'_, '_>, ) -> Result<EntityRef<'a>, <EntityRef<'a> as TryFrom<&'a FilteredEntityMut<'_, '_>>>::Error>

Performs the conversion.

impl<'a> TryFrom<&'a mut FilteredEntityMut<'_, '_>> for EntityMut<'a>

type Error = TryFromFilteredError

The type returned in the event of a conversion error.

fn try_from( entity: &'a mut FilteredEntityMut<'_, '_>, ) -> Result<EntityMut<'a>, <EntityMut<'a> as TryFrom<&'a mut FilteredEntityMut<'_, '_>>>::Error>

Performs the conversion.

impl<'a> TryFrom<FilteredEntityMut<'a, '_>> for EntityMut<'a>

type Error = TryFromFilteredError

The type returned in the event of a conversion error.

fn try_from( entity: FilteredEntityMut<'a, '_>, ) -> Result<EntityMut<'a>, <EntityMut<'a> as TryFrom<FilteredEntityMut<'a, '_>>>::Error>

Performs the conversion.

impl<'a> TryFrom<FilteredEntityMut<'a, '_>> for EntityRef<'a>

type Error = TryFromFilteredError

The type returned in the event of a conversion error.

fn try_from( entity: FilteredEntityMut<'a, '_>, ) -> Result<EntityRef<'a>, <EntityRef<'a> as TryFrom<FilteredEntityMut<'a, '_>>>::Error>

Performs the conversion.

impl WorldQuery for FilteredEntityMut<'_, '_>

SAFETY: The accesses of Self::ReadOnly are a subset of the accesses of Self

const IS_DENSE: bool = false

Returns true if (and only if) every table of every archetype matched by this fetch contains all of the matched components.

type Fetch<'w> = EntityFetch<'w>

Per archetype/table state retrieved by this WorldQuery to compute Self::Item for each entity.

type State = Access

State used to construct a Self::Fetch. This will be cached inside QueryState, so it is best to move as much data / computation here as possible to reduce the cost of constructing Self::Fetch.

fn shrink_fetch<'wlong, 'wshort>( fetch: <FilteredEntityMut<'_, '_> as WorldQuery>::Fetch<'wlong>, ) -> <FilteredEntityMut<'_, '_> as WorldQuery>::Fetch<'wshort>

where 'wlong: 'wshort,

This function manually implements subtyping for the query fetches.

unsafe fn init_fetch<'w, 's>( world: UnsafeWorldCell<'w>, _state: &'s <FilteredEntityMut<'_, '_> as WorldQuery>::State, last_run: Tick, this_run: Tick, ) -> <FilteredEntityMut<'_, '_> as WorldQuery>::Fetch<'w>

Creates a new instance of Self::Fetch, by combining data from the World with the cached Self::State. Readonly accesses resources registered in WorldQuery::update_component_access.

unsafe fn set_archetype<'w, 's>( _fetch: &mut <FilteredEntityMut<'_, '_> as WorldQuery>::Fetch<'w>, _state: &'s <FilteredEntityMut<'_, '_> as WorldQuery>::State, _: &'w Archetype, _table: &Table, )

Adjusts internal state to account for the next Archetype. This will always be called on archetypes that match this WorldQuery.

unsafe fn set_table<'w, 's>( _fetch: &mut <FilteredEntityMut<'_, '_> as WorldQuery>::Fetch<'w>, _state: &'s <FilteredEntityMut<'_, '_> as WorldQuery>::State, _: &'w Table, )

Adjusts internal state to account for the next Table. This will always be called on tables that match this WorldQuery.

fn update_component_access( state: &<FilteredEntityMut<'_, '_> as WorldQuery>::State, filtered_access: &mut FilteredAccess, )

Adds any component accesses used by this WorldQuery to access.

fn init_state( _world: &mut World, ) -> <FilteredEntityMut<'_, '_> as WorldQuery>::State

Creates and initializes a State for this WorldQuery type.

fn get_state( _components: &Components, ) -> Option<<FilteredEntityMut<'_, '_> as WorldQuery>::State>

Attempts to initialize a State for this WorldQuery type using read-only access to Components.

fn matches_component_set( _state: &<FilteredEntityMut<'_, '_> as WorldQuery>::State, _set_contains_id: &impl Fn(ComponentId) -> bool, ) -> bool

Returns true if this query matches a set of components. Otherwise, returns false.

impl EntityEquivalent for FilteredEntityMut<'_, '_>

impl Eq for FilteredEntityMut<'_, '_>