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snapshot: deprecate multi-type component loading function

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This commit is contained in:
Michele Caini
2023-05-25 11:13:41 +02:00
parent 8feeaaef7c
commit 35e338cc99
1 changed files with 50 additions and 33 deletions
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83
src/entt/entity/snapshot.hpp
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@@ -179,35 +179,6 @@ template<typename Registry>
class basic_snapshot_loader {
using traits_type = typename Registry::traits_type;
template<typename Component, typename Archive>
void assign(Archive &archive) {
auto &storage = reg->template storage<entity_type>();
auto &elem = reg->template storage<Component>();
typename traits_type::entity_type length{};
entity_type entt;
archive(length);
if constexpr(std::is_empty_v<Component>) {
while(length--) {
archive(entt);
const auto entity = storage.contains(entt) ? entt : storage.emplace(entt);
ENTT_ASSERT(entity == entt, "Entity not available for use");
elem.emplace(entity);
}
} else {
Component instance;
while(length--) {
archive(entt, instance);
const auto entity = storage.contains(entt) ? entt : storage.emplace(entt);
ENTT_ASSERT(entity == entt, "Entity not available for use");
elem.emplace(entity, std::move(instance));
}
}
}
public:
/*! Basic registry type. */
using registry_type = Registry;
@@ -258,20 +229,66 @@ public:
return *this;
}
/**
* @brief Restores all elements of a type with associated identifiers.
*
* The template parameter list must be exactly the same used during
* serialization.
*
* @tparam Component Type of component to restore.
* @tparam Archive Type of input archive.
* @param archive A valid reference to an input archive.
* @return A valid loader to continue restoring data.
*/
template<typename Component, typename Archive>
basic_snapshot_loader &component(Archive &archive) {
auto &storage = reg->template storage<entity_type>();
auto &elem = reg->template storage<Component>();
typename traits_type::entity_type length{};
entity_type entt;
archive(length);
if constexpr(std::is_empty_v<Component>) {
while(length--) {
archive(entt);
const auto entity = storage.contains(entt) ? entt : storage.emplace(entt);
ENTT_ASSERT(entity == entt, "Entity not available for use");
elem.emplace(entity);
}
} else {
Component instance;
while(length--) {
archive(entt, instance);
const auto entity = storage.contains(entt) ? entt : storage.emplace(entt);
ENTT_ASSERT(entity == entt, "Entity not available for use");
elem.emplace(entity, std::move(instance));
}
}
return *this;
}
/**
* @brief Restores all required components with associated identifiers.
*
* The template parameter list must be exactly the same used during
* serialization.
*
* @tparam Component Types of components to restore.
* @tparam First First type of component to serialize.
* @tparam Second Second type of component to serialize.
* @tparam Other Other types of components to serialize.
* @tparam Archive Type of input archive.
* @param archive A valid reference to an input archive.
* @return A valid loader to continue restoring data.
*/
template<typename... Component, typename Archive>
basic_snapshot_loader &component(Archive &archive) {
(assign<Component>(archive), ...);
template<typename First, typename Second, typename... Other, typename Archive>
[[deprecated("use .component<Type>(archive) instead")]] basic_snapshot_loader &component(Archive &archive) {
component<First>(archive);
component<Second>(archive);
(component<Other>(archive), ...);
return *this;
}