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snapshot: avoid unnecessary lookups

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This commit is contained in:
Michele Caini
2023-03-24 17:04:23 +01:00
parent f907bc066a
commit 69397f3658
1 changed files with 7 additions and 4 deletions
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11
src/entt/entity/snapshot.hpp
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@@ -163,6 +163,9 @@ class basic_snapshot_loader {
template<typename Component, typename Archive>
void assign(Archive &archive) const {
auto &storage = reg->template storage<entity_type>();
auto &elem = reg->template storage<Component>();
typename traits_type::entity_type length{};
entity_type entt;
@@ -171,18 +174,18 @@ class basic_snapshot_loader {
if constexpr(std::is_empty_v<Component>) {
while(length--) {
archive(entt);
const auto entity = reg->valid(entt) ? entt : reg->create(entt);
const auto entity = storage.contains(entt) ? entt : storage.emplace(entt);
ENTT_ASSERT(entity == entt, "Entity not available for use");
reg->template emplace<Component>(entity);
elem.emplace(entity);
}
} else {
Component instance;
while(length--) {
archive(entt, instance);
const auto entity = reg->valid(entt) ? entt : reg->create(entt);
const auto entity = storage.contains(entt) ? entt : storage.emplace(entt);
ENTT_ASSERT(entity == entt, "Entity not available for use");
reg->template emplace<Component>(entity, std::move(instance));
elem.emplace(entity, std::move(instance));
}
}
}