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helper:

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* break dependency on component_traits
* use public storage traits_type member type
This commit is contained in:
Michele Caini
2022-11-23 08:58:45 +01:00
parent df5284d9e5
commit be4eb68a30
1 changed files with 3 additions and 3 deletions
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6
src/entt/entity/helper.hpp
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@@ -6,7 +6,6 @@
#include "../core/fwd.hpp"
#include "../core/type_traits.hpp"
#include "../signal/delegate.hpp"
#include "component.hpp"
#include "fwd.hpp"
#include "group.hpp"
#include "view.hpp"
@@ -127,11 +126,12 @@ void invoke(Registry &reg, const typename Registry::entity_type entt) {
template<typename Registry, typename Component>
typename Registry::entity_type to_entity(const Registry &reg, const Component &instance) {
const auto &storage = reg.template storage<Component>();
static constexpr auto page_size = storage_for_t<Component>::traits_type::page_size;
const typename Registry::base_type &base = storage;
const auto *addr = std::addressof(instance);
for(auto it = base.rbegin(), last = base.rend(); it < last; it += component_traits<Component>::page_size) {
if(const auto dist = (addr - std::addressof(storage.get(*it))); dist >= 0 && dist < static_cast<decltype(dist)>(component_traits<Component>::page_size)) {
for(auto it = base.rbegin(), last = base.rend(); it < last; it += page_size) {
if(const auto dist = (addr - std::addressof(storage.get(*it))); dist >= 0 && dist < static_cast<decltype(dist)>(page_size)) {
return *(it + dist);
}
}