From 3d3d3ef2d9eaa37199bb3dc9816e491886f2d5d3 Mon Sep 17 00:00:00 2001
From: Michele Caini <michele.caini@gmail.com>
Date: Fri, 28 Apr 2023 16:28:13 +0200
Subject: [PATCH] registry: all_of supports non-existing pools now

---
 src/entt/entity/registry.hpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/entt/entity/registry.hpp b/src/entt/entity/registry.hpp
index 92b69ce78..d0a4921af 100644
--- a/src/entt/entity/registry.hpp
+++ b/src/entt/entity/registry.hpp
@@ -961,7 +961,12 @@ public:
      */
     template<typename... Type>
     [[nodiscard]] bool all_of(const entity_type entt) const {
-        return (assure<std::remove_const_t<Type>>()->contains(entt) && ...);
+        if constexpr(sizeof...(Type) == 1u) {
+            auto *cpool = assure<std::remove_const_t<Type>...>();
+            return cpool && cpool->contains(entt);
+        } else {
+            return (all_of<Type>(entt) && ...);
+    }
     }
 
     /**