Crate utils 

General utilities for first-party Bevy engine crates.

Modules

cfg

Configuration information for this crate.

memory_size

Types for representing the size of objects in memory.

prelude

The utilities prelude.

Macros

define_atomic_id

Defines a 32-bit id type which guarantees global uniqueness via atomics on a static global.

once

Call some expression only once per call site.

Structs

BloomFilter

A Bloom filter, parameterized by number of u64 segments N and number of hash functions K.

BufferedChannel

An asynchronous MPSC channel that buffers messages and reuses allocations with thread locals.

BufferedReceiver

A wrapper around a Receiver that returns RecycledVecs to automatically return buffers to the BufferedChannel pool.

BufferedSender

A BufferedChannel sender that buffers messages locally, flushing it when the sender is dropped or BufferedChannel::chunk_size is reached.

DebugName

Wrapper to help debugging ECS issues. This is used to display the names of systems, components, …

OnDrop

A type which calls a function when dropped. This can be used to ensure that cleanup code is run even in case of a panic.

Parallel

A cohesive set of thread-local values of a given type.

RecycledVec

A wrapper around a Vec<T> that automatically returns it to the BufferedChannel’s pool when dropped.

Enums

TypeIdIndexMapEntry

Entry for an existing key-value pair in an IndexMap or a vacant location to insert one.

TypeIdMapEntry

Entry for an existing key-value pair in an IndexMap or a vacant location to insert one.

Traits

PreHashMapExt

Extension methods intended to add functionality to PreHashMap.

TypeIdHashMapExt

Extension trait to make use of TypeIdHashMap more ergonomic.

TypeIdMapExt

Extension trait to make use of TypeIdIndexMap more ergonomic.

Functions

default

An ergonomic abbreviation for Default::default() to make initializing structs easier.

Type Aliases

PreHashMap

A HashMap pre-configured to use Hashed keys and PassHash passthrough hashing. Iteration order only depends on the order of insertions and deletions.

TypeIdHashMap

A specialized hash map type with a key of TypeId.

TypeIdHashMapEntry

Shortcut for Entry with FixedHasher as the default hashing provider.

TypeIdIndexMap

A specialized index map type with a key of TypeId. Iteration order only depends on the order of insertions and deletions.

TypeIdMapDeprecated

Deprecated compatibility alias for TypeIdIndexMap.