entt::basic_snapshot< Registry > Class Template Reference

Utility class to create snapshots from a registry. More...

#include <snapshot.hpp>

Public Types
using	registry_type = Registry
using	entity_type = typename registry_type::entity_type
	Underlying entity identifier.

Public Member Functions
	basic_snapshot (const registry_type &source) noexcept
	Constructs an instance that is bound to a given registry.
	basic_snapshot (const basic_snapshot &)=delete
	Default copy constructor, deleted on purpose.
	basic_snapshot (basic_snapshot &&) noexcept=default
	Default move constructor.
	~basic_snapshot ()=default
	Default destructor.
basic_snapshot &	operator= (const basic_snapshot &)=delete
	Default copy assignment operator, deleted on purpose.
basic_snapshot &	operator= (basic_snapshot &&) noexcept=default
	Default move assignment operator.
template<typename Type , typename Archive >
const basic_snapshot &	get (Archive &archive, const id_type id=type_hash< Type >::value()) const
	Serializes all elements of a type with associated identifiers.
template<typename Type , typename Archive , typename It >
const basic_snapshot &	get (Archive &archive, It first, It last, const id_type id=type_hash< Type >::value()) const
	Serializes all elements of a type with associated identifiers for the entities in a range.

Detailed Description

template<typename Registry>
class entt::basic_snapshot< Registry >

Utility class to create snapshots from a registry.

A snapshot can be either a dump of the entire registry or a narrower selection of elements of interest.
This type can be used in both cases if provided with a correctly configured output archive.

Template Parameters

Registry

Basic registry type.

Definition at line 47 of file snapshot.hpp.

Member Typedef Documentation

entity_type

template<typename Registry >

using entt::basic_snapshot< Registry >::entity_type = typename registry_type::entity_type

Underlying entity identifier.

Definition at line 55 of file snapshot.hpp.

registry_type

template<typename Registry >

using entt::basic_snapshot< Registry >::registry_type = Registry

Basic registry type.

Definition at line 53 of file snapshot.hpp.

Constructor & Destructor Documentation

basic_snapshot()

template<typename Registry >

entt::basic_snapshot< Registry >::basic_snapshot ( const registry_type & source )

inlinenoexcept

Constructs an instance that is bound to a given registry.

Parameters

source

A valid reference to a registry.

Definition at line 61 of file snapshot.hpp.

Member Function Documentation

get() [1/2]

template<typename Registry >

template<typename Type , typename Archive >

const basic_snapshot & entt::basic_snapshot< Registry >::get ( Archive & archive, const id_type id = type_hash<Type>::value() ) const

inline

Serializes all elements of a type with associated identifiers.

Template Parameters

Type	Type of elements to serialize.
Archive	Type of output archive.

Parameters

archive	A valid reference to an output archive.
id	Optional name used to map the storage within the registry.

Returns

An object of this type to continue creating the snapshot.

Definition at line 94 of file snapshot.hpp.

get() [2/2]

template<typename Registry >

template<typename Type , typename Archive , typename It >

const basic_snapshot & entt::basic_snapshot< Registry >::get ( Archive & archive, It first, It last, const id_type id = type_hash<Type>::value() ) const

inline

Serializes all elements of a type with associated identifiers for the entities in a range.

Template Parameters

Type	Type of elements to serialize.
Archive	Type of output archive.
It	Type of input iterator.

Parameters

archive	A valid reference to an output archive.
first	An iterator to the first element of the range to serialize.
last	An iterator past the last element of the range to serialize.
id	Optional name used to map the storage within the registry.

Returns

An object of this type to continue creating the snapshot.

Definition at line 140 of file snapshot.hpp.

operator=() [1/2]

template<typename Registry >

basic_snapshot & entt::basic_snapshot< Registry >::operator= ( basic_snapshot< Registry > && )

defaultnoexcept

Default move assignment operator.

Returns

This snapshot.

operator=() [2/2]

template<typename Registry >

basic_snapshot & entt::basic_snapshot< Registry >::operator= ( const basic_snapshot< Registry > & )

delete

Default copy assignment operator, deleted on purpose.

Returns

This snapshot.

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The documentation for this class was generated from the following files:

• src/entt/entity/fwd.hpp
• src/entt/entity/snapshot.hpp