From dcb5aed901d3d74fdc1e12a495ba36deff7e3dd2 Mon Sep 17 00:00:00 2001
From: Michele Caini <michele.caini@gmail.com>
Date: Tue, 2 May 2023 14:39:06 +0200
Subject: [PATCH] registry: lazily/partially initialize views in the ::view
 const function

---
 src/entt/entity/registry.hpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/entt/entity/registry.hpp b/src/entt/entity/registry.hpp
index f3e4ebec0..17ca32a59 100644
--- a/src/entt/entity/registry.hpp
+++ b/src/entt/entity/registry.hpp
@@ -1195,7 +1195,10 @@ public:
     template<typename Type, typename... Other, typename... Exclude>
     [[nodiscard]] basic_view<get_t<storage_for_type<const Type>, storage_for_type<const Other>...>, exclude_t<storage_for_type<const Exclude>...>>
     view(exclude_t<Exclude...> = exclude_t{}) const {
-        return {*assure<std::remove_const_t<Type>>(), *assure<std::remove_const_t<Other>>()..., *assure<std::remove_const_t<Exclude>>()...};
+        const auto cpools = std::make_tuple(assure<std::remove_const_t<Type>>(), assure<std::remove_const_t<Other>>()..., assure<std::remove_const_t<Exclude>>()...);
+        basic_view<get_t<storage_for_type<const Type>, storage_for_type<const Other>...>, exclude_t<storage_for_type<const Exclude>...>> elem{};
+        std::apply([&elem](const auto *...curr) { ((curr ? elem.storage(*curr) : void()), ...); }, cpools);
+        return elem;
     }
 
     /*! @copydoc view */