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Better ecs::entity_accessor interface

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This commit is contained in:
Nikita Lisitsa 2023-08-22 23:15:56 +03:00
parent 82682c0317
commit c59a28433a
1 changed files with 16 additions and 2 deletions
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18
libs/ecs/include/psemek/ecs/entity_accessor.hpp
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@ -14,7 +14,7 @@ namespace psemek::ecs
{} {}
template <typename Component> template <typename Component>
Component & get() Component * get_if()
{ {
util::uuid const uuid = Component::uuid(); util::uuid const uuid = Component::uuid();
@ -22,12 +22,26 @@ namespace psemek::ecs
for (std::size_t i = 0; i < component_uuids.size(); ++i) for (std::size_t i = 0; i < component_uuids.size(); ++i)
if (uuid == component_uuids[i]) if (uuid == component_uuids[i])
return *reinterpret_cast<Component *>(table_->get_component_pointers()[i].data + detail::stride<Component>() * row_); return reinterpret_cast<Component *>(table_->get_component_pointers()[i].data + detail::stride<Component>() * row_);
return nullptr;
}
template <typename Component>
Component & get()
{
if (auto ptr = get_if<Component>())
return *ptr;
assert(false); assert(false);
__builtin_unreachable(); __builtin_unreachable();
} }
template <typename Component>
bool contains() const
{
return get_if<Component>() != nullptr;
}
private: private:
detail::table * table_; detail::table * table_;
std::uint32_t row_; std::uint32_t row_;