EnTT v3.15.0

Changelog

• core

  • Skip most of vtable calls in any for references and dynamically allocated objects
  • Review any_policy values to better capture the nature of the elements stored with any
  • Added any::owner() because any_policy::owner is no longer available
  • Embedded-as-dynamic support for any (useful to transfer ownership of externally allocated objects)
  • is_iterator and is_equality_comparable review to refine them further
  • Self-moving an any puts it in a safe but unspecified state now
  • Introduce ENTT_CONSTEVAL config parameter
  • Apply consteval on appropriate hashed string related functions

• entity:

  • deletion_policy::unspecified is now available and equal to swap_and_pop
  • Skip tombstone checks in more cases and improve performance of view iterators
  • Auto-disconnection support for reactive_mixin
  • Refined storage fallback mechanism for views to make it work across boundaries
  • Support joining views with storage objects directly
  • Introduce generate functions in the storage entity to replace emplace
  • Add generate functions to the sigh mixin to fully support storage entity
  • as_view and as_group are now copyable
  • Improved shrink_to_fit to also cleanup the sparse array of a sparse set
  • Extended basic_registry<...>::storage<T> const-correctness
  • Allow customizing component_traits based on the entity type
  • Default group template parameters for Get and Exclude lists
  • Make basic_organizer support groups too
  • Fix a bug on view packs when combining views with uninitialized filters
  • Make built-in storage mixins support custom private/protected registries
  • Support to reserved entities (see start_from on the entity storage)
  • Make to_entity work properly with stable types

• meta:

  • meta_sequence_container::rebind is no longer available
  • meta_associative_container::rebind is no longer available
  • meta_any::base() to return a const reference to the underlying any
  • Deprecated meta_any_policy, meta_any::policy() and meta_any::data()
  • Self-contained meta_factory<T> to avoid having to go through meta<T>
  • Support taking ownership of passed in pointers on construction for meta_any
  • meta_type::from_void allows transferring ownership of elements too
  • Standalone meta_data and meta_func implementations
  • Make empty meta_data, meta_func and meta_type safe to use no matter what
  • Self-moving a meta_any puts it in a safe bug unspecified state now
  • Allow attaching const values of non-Type type to meta types
  • Make as_ref return valid objects when the underlying type is void
  • meta_any::context() returns the underling meta context
  • Deprecated multi-setters meta data support
  • Deprecated context-aware meta_getter utilities
  • Get the context from the instance in the remaining meta_getter utilities
  • Deprecated context-aware meta_invoke utilities
  • Get the context from the instance in the remaining meta_invoke utilities
  • Support deducing meta pointers like types directly
  • Early exit for typed allow_cast

• signal:

  • Make it possible to create uninitialized sink objects
  • Updated definition for emitter::publish (no forwarding references)
  • Slightly review sink API (these changes should be backward compatible)

Build system

• Updated IWYU version
• Updated lcov configuration to make gtest work with lcov2
• ENTT_INSTALL to enable/disable installation steps as needed

Any other business

• Removed all previously deprecated methods

Natvis support

All natvis files have been updated where necessary.

Breaking changes

• core:

  • Reviewed any_policy values with breaking changes in names to avoid subtle errors on user side

• entity:

  • Deprecated emplace in the storage entity, use generate instead
  • component_traits accepts entity types (possibly breaking if specialized when using a custom entity type), refine specializations

• meta:

  • meta_sequence_container::rebind was removed, use the constructor instead
  • meta_associative_container::rebind was removed, use the constructor instead
  • Deprecated meta_any_policy, use any_policy instead
  • Deprecated meta_any::policy(), use .base().policy() instead
  • Deprecated meta_any::data(), use .base().data()
  • Deprecated meta<T>, use meta_factory<T> directly instead
  • Deprecated multi-setters meta data support, use variant or convertible types instead
  • Deprecated context-aware meta_getter utilities, rebind the handle as needed instead
  • Deprecated context-aware meta_invoke utilities, rebind the handle as needed instead

Any other business

The documentation is up-to-date and the library is battle-tested with 100% coverage as usual.
I started a long term process to reduce the number of instantiations and also speed up the compilation.
This release contains some changes in this regard. Still a work in progress though.

EnTT v3.14.0

Changelog

• config:

  • ENTT_NO_MIXIN to disable the sigh mixin by default
  • Print assertion messages upon failure

• core:

  • Avoid uninitialized length in all (corner) cases
  • Export more types as forward declarations (see fwd.hpp)
  • Lambda support for nth_argument
  • Class level new/delete support for any
  • Class level new/delete support for uninitialized_construct_using_allocator
  • Make the monostate return *this from operator=
  • Enable enable_borrowed_range/enable_view for a few types
  • Make popcount public (waiting for C++20)
  • Rename is_power_of_two to has_single_bit (waiting for C++20)
  • Introduce bit.hpp and move a few functions there (ie has_single_bit)
  • Self assignment support for basic_any<...>

• entity:

  • Avoid unchecked refresh loops on single type views
  • Refine empty registry check in the snapshot loader constructor
  • Stop groups from swapping observed types in their pools
  • Make sparse set sort_as function return an iterator past the last shared element
  • Update registry destroy function to use sparse set sort_as internally
  • Add operator bool to runtime views
  • Assert when emplacing invalid entities through a registry
  • Improved registry valid function
  • Decouple size and next identifier in the storage entity
  • Faster and memory-friendly storage entity create-with-hint function
  • Update the tombstone class to support zero-sized versions
  • Update entity traits the fully support zero-sized versions
  • Return the correct value from sparse set push functions
  • Drop sparse set scoped iterators (ie begin(N)/end(N))
  • Add element_type to the storage class as opposed to value_type
  • Make registry traits_type type member private
  • Make sparse set traits_type type member private
  • Make storage traits_type type member private
  • Avoid using weak ranges twice in the sigh_mixin class
  • Support comparisons between basic_handle<...> and null_t
  • Reliable valid function for empty basic_handle<...>s
  • Add pointer stable types support to the snapshot loader class
  • Branch-less sparse set sort and sort_as functions
  • Branch-less centralized swap-only mode check for views
  • Refine storage log messages to avoid ambiguity
  • Introduce the new basic_table and table classes
  • In/Out edges support for basic_organizer
  • Single type view ::operator-> to get access to the underlying storage
  • All registry now assert on custom user defined entity storage
  • Add storage_policy constexpr member to all storage classes
  • Enable enable_borrowed_range/enable_view for a few types
  • Decouple all types except basic_storage from component_traits
  • Drop the Mask parameter of the basic_observer class
  • View specialization and improvements for swap-only storage
  • View specialization and improvements for swap-and-pop storage
  • View specialization and improvements for in-place storage
  • Avoid checking for filter validity when iterating views
  • Allow resetting a storage in the registry via the reset function
  • sigh_mixin automatic signal registration support for components
  • Generic bind function in the basic_sparse_set class
  • Reactive mixin and storage (designed to replace the observer class)
  • operator bool and registry functions for sigh_mixin
  • sigh_mixin transparent support to derived registries

• graph:

  • Add an empty method to the flow class
  • Add an empty method to the adjacency_matrix class

• meta:

  • Add is_pointer meta traits
  • Updated meta type is_pointer function to make it faster and more reliable
  • User defined traits for meta objects
  • Self assignment support for meta_any
  • User defined arbitrary data support for meta types, meta data and meta functions
  • Guaranteed execution/iteration order on overlaoded meta functions
  • Support for creating different meta types from different factories concurrently
  • Support noexcept functions whenever a free or member function is allowed
  • Improve lookup time of member objects and reduce their compile-time cost

• poly:

  • Improve support for inherited concepts

• resource:

  • Add reset functions to resource class
  • Support swap-ping resources

• signal:

  • Support for free and member noexcept functions to the delegate class

Build system

• Avoid installing include/BUILD.bazel
• Updated IWYU version

Any other business

• Removed all previously deprecated methods
• Shared types in the test suite to avoid duplication
• Full review to reduce NOLINT directives as much as possible
• Refine linter configuration and address as many warnings as possible
• Updated IWYU entt.imp as needed
• Drop support to Android NDK r17
• Drop support to MSVC toolset v141

Natvis support

All natvis files have been updated where necessary. New entries:

• Natvis view for basic_handle class
• Natvis view for meta_ctx class
• Natvis view for meta_type_descriptor class
• Natvis view for meta_custom_node class

Breaking changes

• Sparse set scoped iterators are no longer a thing, check the deletion policy and use the free list value as needed instead
• Registry traits_type is private, use entt_traits class and entity_type type member instead
• Sparse set traits_type is private, use entt_traits class and entity_type type member instead
• Storage traits_type is private, use component_traits class and value_type type member instead
• The basic_observer class doesn't accept anymore a Mask template parameter
• Renamed is_power_of_two to has_single_bit and moved it to bit.hpp
• Removed support to empty each callbacks for single non-empty type views
• Deprecate meta properties, use the new custom data support for meta types, data and functions instead
• basic_sparse_set doesn't require anymore to wrap objects with anys when passing them to bind
• The observer class is now deprecated, use the reactive mixin and storage instead

Any other business

The documentation is up-to-date and the library is battle-tested with 100% coverage as usual.
I started a long term process to reduce the number of instantiations and also speed up the compilation.
This release contains some changes in this regard. Still a work in progress though.

EnTT v3.13.2

Changelog

• Fix an issue on the range-insert in the sigh_mixin class
• Add full support to empty types in the snapshot classes
• Suppress an annoying warning by clang in the snapshot classes

Any other business

The documentation is up-to-date and the library is battle-tested with 100% coverage as usual.

EnTT v3.13.1

Changelog

• Refine the check in the constructor of the snapshot loader class
• Avoid swapping observed types from groups
• Don't install include/BUILD.bazel anymore

Any other business

The documentation is up-to-date and the library is battle-tested with 100% coverage as usual.

EnTT v3.13.0

Changelog

• config:

  • Provide coverage for user defined ENTT_ID_TYPE in the std namespace

• container:

  • Added reverse iterators to dense_set
  • Added iterator_concept to dense map iterators

• core:

  • Introduce any_policy
  • Add basic_any<...>::policy() member function
  • Improved is_equality_comparable[_v] to fully support optional types
  • Type-based nth_argument
  • Reduce compilation cost of type_list_unique

• entity:

  • Reintroduced support for storage listeners in snapshot
  • Make basic_registry<...>::valid fully backward compatible
  • Specialization for single type views with exclusion lists
  • Introduced deletion_policy::swap_only mode directly managed at sparse set level
  • Added basic_sparse_set<...>::free_list to set/get the head of the free list if allowed
  • Introduced basic_sparse_set<...>::swap_only pop protected function
  • Updated entity storage to make it use swap-only deletion policy directly
  • Drop view specialization for single type with exclusion list
  • Returns scoped iterators from basic_sparse_set<...> (only useful with swap-only deletion policy)
  • Entity storage use scoped iterators with its iterable objects
  • View each function use scoped iterators from sparse sets
  • View iterators (begin/end) are scoped if needed (ie entity storage view or the like)
  • basic_storage<void>::get_allocator() works fine too
  • Storage based to_entity function to get entities from components
  • Iterator-based sort_as for sparse sets
  • Iterator-based sort_as for groups
  • basic_registry<...>::try_get doesn't create storage anymore
  • value_type for storage entity is void
  • sigh_mixin support to custom registry types
  • Added iterator_concept to view iterators
  • Added iterator_concept to groups iterators
  • Added iterator_concept to registry iterators
  • Added iterator_concept to handle iterators
  • Added iterator_concept to storage iterators
  • Full support to reserved bits on entity identifiers (ie for disabling components)
  • Shared implementation for all types of views
  • Explicit iterable and const_iterable types exposed by the registry class
  • Index based view iterators (internal change)
  • Removed basic_view::operator[] for size types to avoid forcing non-integral entity types

• graph:

  • Added iterator_concept to adjacency matrix iterators

• meta:

  • Introduce meta_any_policy
  • Add meta_any::policy() member function
  • Meta container support to ::reserve
  • Make basic meta container traits publicly available (with revised aPI)
  • Add meta_type::can_cast member function
  • Add meta_type::can_convert member function
  • Meta container ::rebind accepts a value rather than an any object
  • Meta container iterator support to ::rebind
  • meta_sequence_container::resize support to non default constructible types
  • basic_meta_sequence_container_traits::fixed_size available to final users
  • Correctly initialize all members of meta container wrappers
  • Added iterator_concept to meta iterators
  • Improved meta containers performance

• process:

  • basic_scheduler<...> was fully redesigned for the better
  • In-line .then support for basic_scheduler<...>
  • Allocator-aware basic_scheduler<...>

• resource:

  • Added iterator_concept to cache iterators

Build system

• Make the debug build suitable for SizeBench
• Enable more warnings on the CI
• bzlmod support with tests

Any other business

• Removed all previously deprecated methods
• Updated IWYU entt.imp file
• Make the library more C++20-friendly
• Added a test/example on how to use reserved bits on entity identifiers
• Clang tidy config (and cleanup, still a work-in-progress though)

Natvis support

All natvis files have been updated where necessary.

Breaking changes

• core:

  • nth_argument accepts a type rather than a function, use decltype as needed

• entity:

  • basic_sparse_set<...>::swap_at is now private
  • basic_storage<...>::in_use is deprecated, use basic_sparse_set<...>::free_list instead
  • Entity storage no longer has a type_traits type member
  • Sorting functions of basic_sparse_set<...> don't invoke compact automatically anymore
  • Registry based to_entity function is deprecated, use the storage based version instead
  • basic_sparse_set<...>::sort_as is deprecated, use iterator-based overload of the same function instead
  • basic_group<...>::sort_as is deprecated, use iterator-based overload of the same function instead
  • Storage entity ::pack function is deprecated, use iterator-based sort_as instead
  • basic_view::operator[] no longer available for size types to avoid forcing non-integral entity types
  • basic_sparse_set<...>::at is deprecated as ambiguous, use operator[] instead

• meta:

  • Meta container ::rebind accepts a value rather than an any object
  • Meta container iterators no longer accept underlying iterators on construction, use rebind instead
  • basic_meta_sequence_container_traits::fixed_size required for explicit specializations

Any other business

The documentation is up-to-date and the library is battle-tested with 100% coverage as usual.
I started a long term process to reduce the number of instantiations and also speed up the compilation.
This release contains MANY changes and great improvements in this regard. Still a work in progress though.

EnTT v3.12.2

Changelog

• Avoid warnings due to deprecated functions in the snapshot classes
• Make basic_registry<...>::valid fully backward compatible

Any other business

The documentation is up-to-date and the library is battle-tested with 100% coverage as usual.

EnTT v3.12.1

Changelog

• Reintroduce support to storage listeners for snapshot classes
• Add some tests to avoid future regressions on the snapshot classes
• Update the single include file to the last version as it ought to be

Any other business

The documentation is up-to-date and the library is battle-tested with 100% coverage as usual.

EnTT v3.12.0

Changelog

• config:

  • ENTT_FAIL(msg) as an alias of ENTT_ASSERT(false, msg)

• core:

  • is_equality_comparable also detects C-style arrays
  • Added value_list_index[_v], value_list_unique[_t], value_list_contains[_v] and value_list_diff[_t]
  • std::tuple traits specialization for entt::type_list and entt::value_list

• entity:

  • All group types are copyable and movable
  • View filter storage classes are now available (see ::storage)
  • Group filter storage classes are now available (see ::storage)
  • Propagate the allocator to the registry context
  • sigh_helper utility to simplify connecting multiple listeners to a registry
  • Public basic_sparse_set<...>::traits_type type member
  • Public basic_storage<...>::traits_type type member
  • Public basic_registry<...>::traits_type type member
  • component_traits treat void properly as any other component type
  • Split entt_traits and basic_entt_traits to simplify specializing the former
  • Make entity_mask and version_mask available through entt_traits
  • Add entt_traits::base_type for the final user (not used internally)
  • Make basic_registry work properly with void component type
  • Handles discard their entities on destruction
  • Improved removing/erasing elements when a sigh_mixin is attached to a storage
  • Added internal, opaque data function to sparse set iterators
  • Additional internal virtual clear_all function available in the basic_sparse_set<...> class
  • Improved performance of sparse set remove, erase and clear functions
  • Improved performance of registry remove, erase, clear and destroy functions
  • deletion_policy is now publicly available via entity/fwd.hpp
  • Added basic_sparse_set<...>::contiguous function
  • extended_storage_iterator::base makes the underlying iterator available
  • extended_view_iterator::base makes the underlying iterator available
  • extended_group_iterator::base makes the underlying iterator available
  • Added a specialization of basic_storage when the value type is also the entity type (entity storage)
  • Entities have their own storage in a registry and it's accessible as storage<entity_type>()
  • Sigh mixin also supports entity storage types (to send signals on entity creation/destruction/update)
  • Exclude-only like views are also supported because of the entity storage
  • added basic_entt_traits::next returns the next valid version of an identifier
  • Refined transparent aggregate support for storage types
  • Deprecated the following functions in the registry class:
    • basic_registry<...>::size() (use .storage<E>().size() instead)
    • basic_registry<...>::alive() (use .storage<E>().in_use() instead)
    • basic_registry<...>::reserve(cap) (use .storage<E>().reserve(cap) instead)
    • basic_registry<...>::capacity() (use .storage<E>().capacity() instead)
    • basic_registry<...>::empty() (use .storage<E>().in_use() instead)
    • basic_registry<...>::data() (use .storage<E>().data() instead)
    • basic_registry<...>::released() (use .storage<E>().in_use() and .storage<E>().size() instead)
    • basic_registry<...>::release(args...) (use .storage<E>().erase(args) and .storage<E>().bump(entt) instead)
    • basic_registry<...>::assign(args...) (use .storage<Entity>().push(first, last) and .storage<Entity>().in_use(len) instead)
    • basic_registry<...>::each(args...) (use .storage<Entity>().each() instead)
  • basic_sparse_set<...>::bump returns the version in use
  • basic_storage<...>::insert returns an iterator to the range of inserted elements
  • Storage based groups fully support multiple storage of the same type now
  • Huge internal rework to reduce the dependencies between the registry and the group classes/handlers
  • All group types have a .handle() function to return a reference to the leading storage
  • basic_registry<...>::group is no longer [[nodiscard]]
  • Configurable mask type for basic_observer
  • Allocator support for basic_observer
  • get_t, owned_t and exclude_t are (constexpr constructible) types now rather than aliases of type_list
  • basic_storage uses allocator_traits::destroy now rather than std::destroy_at (to allow specializations if needed)
  • Make basic_registry<...>::storage_for_type<...> available to the final user
  • basic_view<..>::operator bool returns true only for fully initialized views
  • Uninitialized views behave correctly in all circumstances, returning the expected result on each call
  • Views support swapping their storage or setting them lazily
  • View packs fully support empty views finally
  • basic_registry<...> doesn't instantiate temporary static storage on const function anymore
  • on_construct/on_update/on_destroy of basic_registry<...> also support named pools
  • Added a reverse each function (reach, worst name ever) to all storage classes
  • basic_registry<...>::erase_if to conditionally erase elements from their storage
  • Deprecated the following functions in the snapshot classes:
    • entities() (use get<Entity>() instead)
    • component<...>(...) (use get<T>(...) instead)
    • shrink, no longer required
  • General purpose ::get<T>(...) function for snapshot classes that works with storage types
  • Runtime pools support for snapshot classes (see ::get<T>(...) for further details)
  • Drop multi-type archive function requirement for snapshot classes

• graph:

  • Allocator type propagates to the graph type returned by flow::graph() calls

• locator:

  • Support for opaque structures

• meta:

  • It's now possible to update the value of a meta property at any time (non-const meta_any ref)
  • Full support to meta member functions for primitive types
  • operator==/!= for meta_handle
  • operator==/!= for meta_data
  • operator==/!= for meta_prop
  • operator==/!= for meta_func

• process:

  • Introduced basic_scheduler with default delta type for common cases
  • Turn scheduler into an alias for basic_scheduler<std::uint32_t>

• signal:

  • Added delegate::target to get a pointer to the stored callable function
  • Refined transparent aggregate support for the dispatcher class
  • delegate also supports functions that skip first elements (on second attempt only)
  • Allow disconnecting listeners during iterations over the sigh class

Build system

• Bump IWYU version to 0.19
• Bump CMake version to 3.15.7
• Enable documentation diagnostic for Clang
• Increase CI warning level to /W1 on Windows
• Add GCC11 to the list of compilers directly checked by the CI

Any other business

• Suppress a few warnings due to unused variables in corner cases
• More [[nodiscard]] where it makes sense (i.e. any_cast or meta_type::from_void)
• Better allocator support with additional runtime checks for corner cases

Natvis support

All natvis files have been updated where necessary.

Breaking changes

• entity:

  • ignore_as_empty_v doesn't exist anymore, use component_traits<...>::page_size instead
  • entt_traits::reserved is no longer available, combine entity_mask and version_mask instead
  • basic_sparse_set<...>::swap_at is now a protected function, override swap_or_move as needed instead
  • basic_sparse_set<...>::move_element doesn't exist anymore, use swap_or_move instead (with checks on to if needed)
  • sigh_storage_mixin was renamed into sigh_mixin
  • basic_sparse_set<...>::emplace was renamed to push
  • basic_sparse_set<...>::insert was renamed to push
  • basic_sparse_set<...>::get was renamed to value
  • basic_sparse_set<...>::sort was renamed to sort_as
  • basic_group<...>::sort (no callback overload) was renamed to sort_as
  • basic_registry<...>::base_type was renamed to common_type
  • basic_group<...>::base_type was renamed to common_type
  • runtime_view<...>::base_type was renamed to common_type
  • basic_view<...>::base_type was renamed to common_type
  • Nested groups are no longer supported (the pain is not worth the gain)
  • basic_view<...>::storage<...>() returns a (possibly null) pointer rather than a reference
  • basic_view<...>::handle() returns a (possibly null) pointer rather than a reference
  • basic_group<...>::storage<...>() returns a (possibly null) pointer rather than a reference
  • basic_view<...>::refresh() is a self-contained, non-const function that changes the view in-place
  • basic_view<...>::use<T>() is a self-contained, non-const function that changes the view in-place

• process:

  • scheduler no longer requires a template parameter, use basic_scheduler if std::uint32_t isn't a good enough delta type

• signal:

  • disconnect by reference is no longer available on the sink class, use the overload that accepts a pointer instead
  • sink<...>::before is no longer supported, no alternative provided

Any other business

The documentation is up-to-date and the library is battle-tested with 100% coverage as usual.
I started a long term process to reduce the number of instantiations and also speed up the compilation.
This release contains many changes and great improvements in this regard. Still a work in progress though.

EnTT v3.11.1

Changelog

• Suppress a bunch of warnings due to unused variables or the like in corner cases
• Avoid requiring to include storage.hpp when forward declaring a view

Any other business

The documentation is up-to-date and the library is battle-tested with 100% coverage as usual.

EnTT v3.11.0

Changelog

• config:

  • Decouple ENTT_NOEXCEPT and exceptions handling
  • Added ENTT_CONSTEXPR (to get around some nasty issues with major compilers)
  • Added ENTT_ASSERT_CONSTEXPR (to help further with extreme customizations)

• container:

  • Dense map max_size, count and equal_range functions
  • Dense set max_size, count and equal_range functions

• core:

  • A new forward_apply utility
  • type_list_index[_v] utility for type lists
  • type_list_transform[_t] utility for type lists
  • nth_argument utility to easily extract the n-th argument of a function
  • iota_iterator (waiting for C++20)
  • Added operator* to input_iterator_poointer
  • Turn operator!= for any into an in-class function
  • Avoid using std::aligned_storage_t with any (deprecated since C++23)
  • Utility is_tuple[_v]

• entity

  • Correctly handle overflow of version and max number of entities
  • Turned get_t and exclude_t into plain aliases for type_list
  • Updated API for basic_registry<...>::group/group_if_exists
  • basic_sparse_set<...>::get is now [[nodiscard]]
  • ignore_as_empty_v<void> is always true
  • Support storage<void> as a typeless storage only
  • Added allocator support to sigh_storage_mixin
  • Views support now both const and non-const excluded types
  • Groups support now both const and non-const excluded types
  • Tuple-based constructor for views
  • Added utilities storage_type_t and storage_for[_t]
  • Runtime views support all types of sparse sets now (allocator oriented design)
  • Observers support all types of registries now (allocator oriented design)
  • Snapshots and loaders support all types of registries now (allocator oriented design)
  • as_group and as_view are transparent to the registry type (allocator oriented design)
  • Handles support all types of registries now (allocator oriented design)
  • invoke and to_entity helpers support all types of registries now (allocator oriented design)
  • Organizers support all types of registries now (allocator oriented design)
  • Storage-based model for groups and views (👈 this is huge 🥳 )
  • Replaced basic_handle<...>::visit with ::storage to return an iterable object rather than accepting lambdas
  • The organizer class uses the new flow builder under the hood
  • Added const/non-const registry support to runtime views
  • Runtime views are now allocator aware containers
  • Observers derive directly from storage classes rather than using them internally
  • Relaxed most of the entity validity checks in a registry
  • Added registry context get function, deprecated at
  • Added registry context emplace_as function, deprecated emplace_hint
  • Added registry context insert_or_assign function
  • Merged virtual functions swap_and_pop and in_place_pop, storage classes only have to implement pop now
  • Full support to non-movable types, component types have no more constraints (👈 this is huge 🥳)
  • Partial allocator support for the basic_registry<...> class (registry allocators also propagate to their pools)
  • Registry swap and get_allocator functions
  • Guaranteed order of destruction of the parts of a registry (context variables, components, ...)
  • Allocator support for storage_type[_t] and storage_for[_t]
  • Added basic_view<...>::refresh to reinitialize the leading pool of a view

• graph (👈 new module):

  • adjacency_matrix class with support for directed and undirected graphs
  • Runtime organizer class (flow) to create execution graphs from tasks and resource requirements
  • Basic dot functions to convert an execution graph (and a graph in general) to the dot format

• locator:

  • Support exporting and setting services across boundaries using opaque handles (see functions handle and reset)

• meta:

  • Container traits don't really support plain arrays anymore (if they ever did)
  • Fixed an issue with insert/erase of meta sequence containers
  • Re-added meta_type::remove_pointer
  • Added meta_type::is_integral and meta_type::is_signed
  • meta_associative_container::erase returns the number of elements removed
  • meta_range is now an alias template of iterable_adaptor
  • void *-to-meta_any utility function for meta_types
  • Improve automatic detection of meta sequence containers
  • std::list and std::deque are also supported as meta sequence containers
  • Turn operator!= for meta_any into an in-class function
  • All meta node (i.e. meta_data_node, meta_func_node and so on) are no longer static
  • It's now possible to attach multiple properties to a meta object at different times
  • meta_construct also accepts lambdas
  • Support to const/non-const overloads for the same meta function
  • Context support (👈 this is huge 🥳), see the official documentation for further details
  • Favor top-level conversion functions over bases lookup

• poly:

  • Avoid using std::aligned_storage_t with poly (deprecated since C++23)

• process:

  • Added an fwd.hpp file for the submodule

• resource:

  • Added more comparison operators for resource handles
  • Added type members handle_type and element_type
  • Added member function handle to access the underlying handle

• signal:

  • Full review of the emitter class
  • dispatcher uses now an std::allocator<void> by default
  • sigh uses now an std::allocator<void> by default
  • Added allocator support to basic_emitter

Any other business:

• A good amount of functions and types were reviewed to make them constexpr
• A good amount of functions and types are now (conditionally) noexcept no matter what
• Added some utilities test to make all them work also in release mode (see ENTT_DEBUG_TEST and the others)
• Workflow iwyu (I'll keep an eye on it and refine things a bit at a time)
• Removed the aob target from cmake

Natvis support

All natvis files have been updated where necessary.
There exists a new natvis file named graph.natvis for the newly added submodule.

Breaking changes

• config:

  • ENTT_NOEXCEPT[_IF] no longer exists

• core:

  • identifier was renamed to ident
  • ident::identifer_type was renamed to ident::value_type
  • family::family_type was renamed to family::value_type

• entity:

  • Drop the entity/utility.hpp file, use fwd.hpp instead
  • Updated API for basic_registry<...>::group/group_if_exists
  • basic_registry<...>::storage<T> doesn't accept const types anymore
  • storage_traits was renamed to storage_type
  • storage_type::storage_type was renamed to storage_type::type
  • Entity and component type were flipped in the definition of the basic_storage class template
  • Entity and component type were flipped in the definition of the storage_type utility
  • basic_handle<...>::visit was removed, use ::storage instead (iterable model)
  • basic_registry<...>::storage(id) returns a (possibly null) pointer rather than an utterly annoying iterator

• meta:

  • Container traits don't really support plain arrays anymore (if they ever did)
  • Removed meta_type::base(id) because pointless
  • Meta data and meta functions no longer return the associated id from the API
  • Meta range iterators return now an id and meta object pair (i.e. for meta data or functions from a meta type)
  • Only the single property API is now available for attaching properties to meta objects (no more meta_factory<...>::props)
  • make_meta is no longer available (it doesn't fit with context support), use meta_any constructors directly instead

• resource:

  • Removed resource::use_count, use handle().use_count() instead

• signal:

  • Full review of the emitter class

Any other business

The documentation is up-to-date and the library is battle-tested with 100% coverage as usual.
I started a long term process to reduce the number of instantiations and also speed up the compilation.
This release contains many changes and great improvements in this regard. Still a work in progress though.