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Simplify the implementation by ignoring *all* read access.

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This commit is contained in:
Chris Russell 2025-07-16 15:36:57 -04:00
parent 13513ccbb7
commit b39a683fe7
2 changed files with 7 additions and 40 deletions
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29
crates/bevy_ecs/src/entity_disabling.rs
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@ -207,7 +207,6 @@ mod tests {
use crate::{
prelude::{EntityMut, EntityRef, World},
query::{Has, With},
world::{EntityMutExcept, EntityRefExcept},
};
use alloc::{vec, vec::Vec};
@ -294,24 +293,12 @@ mod tests {
let mut query = world.query::<EntityMut>();
assert_eq!(1, query.iter(&world).count());
let mut query = world.query::<EntityRefExcept<()>>();
assert_eq!(1, query.iter(&world).count());
let mut query = world.query::<EntityMutExcept<()>>();
assert_eq!(1, query.iter(&world).count());
let mut query = world.query_filtered::<(), With<Disabled>>();
assert_eq!(2, query.iter(&world).count());
let mut query = world.query::<Has<Disabled>>();
assert_eq!(3, query.iter(&world).count());
let mut query = world.query::<EntityRefExcept<Disabled>>();
assert_eq!(3, query.iter(&world).count());
let mut query = world.query::<EntityMutExcept<Disabled>>();
assert_eq!(3, query.iter(&world).count());
let mut query = world.query_filtered::<(), With<CustomDisabled>>();
assert_eq!(4, query.iter(&world).count());
@ -324,19 +311,9 @@ mod tests {
let mut query = world.query::<(Has<Disabled>, Has<CustomDisabled>)>();
assert_eq!(15, query.iter(&world).count());
// Some edge cases:
// Ideally this would include entities with `Disabled`,
// but the access is indistinguishable from `EntityRef`.
let mut query = world.query::<(EntityRef, Option<&Disabled>)>();
// This seems like it ought to count as a mention of `Disabled`, but it does not.
// We don't consider read access, since that would count `EntityRef` as a mention of *all* components.
let mut query = world.query::<Option<&Disabled>>();
assert_eq!(1, query.iter(&world).count());
// This is even true if the component is explicitly mentioned in `EntityMutExcept`.
let mut query = world.query::<(EntityMutExcept<Disabled>, Option<&Disabled>)>();
assert_eq!(1, query.iter(&world).count());
// But note that without `Option`, this adds a filter and does include disabled entities.
let mut query = world.query::<(EntityRef, &Disabled)>();
assert_eq!(2, query.iter(&world).count());
}
}

18
crates/bevy_ecs/src/query/access.rs
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@ -272,13 +272,6 @@ impl<T: SparseSetIndex> Access<T> {
.contains(index.sparse_set_index())
}
/// Returns `true` if this either has bounded access including this component
/// or unbounded access not including this component.
pub(crate) fn has_component_read_exception(&self, index: T) -> bool {
self.component_read_and_writes
.contains(index.sparse_set_index())
}
/// Returns `true` if this can access any component.
pub fn has_any_component_read(&self) -> bool {
self.component_read_and_writes_inverted || !self.component_read_and_writes.is_clear()
@ -1232,14 +1225,11 @@ impl<T: SparseSetIndex> FilteredAccess<T> {
.flat_map(|f| f.without.ones().map(T::get_sparse_set_index))
}
/// Returns true if the index is used by this `FilteredAccess` in any way
/// Returns true if the index is used by this `FilteredAccess` in filters or archetypal access.
/// This includes most ways to access a component, but notably excludes `EntityRef` and `EntityMut`
/// along with anything inside `Option<T>`.
pub fn contains(&self, index: T) -> bool {
// Check whether this component is an exception.
// For normal queries, we want to treat access as a use,
// but for `EntityRefExcept<B>` and `EntityMutExcept<B>`,
// treat the exceptions as a use since they were mentioned explicitly.
self.access().has_component_read_exception(index.clone())
|| self.access().has_archetypal(index.clone())
self.access().has_archetypal(index.clone())
|| self.filter_sets.iter().any(|f| {
f.with.contains(index.sparse_set_index())
|| f.without.contains(index.sparse_set_index())