conversion to c by gemini 4 argon

Game/Entity/EntityManager.h

@@ -3,11 +3,13 @@
 #include <Core/Container/Vector.h>
 #include <Entity/entity_common.h>
 
-struct World;
-struct EntityTemplate;
-struct Entity;
-struct Class;
+typedef struct World          World;
+typedef struct EntityTemplate EntityTemplate;
+typedef struct Entity         Entity;
+typedef struct Class          Class;
+typedef struct Archive        Archive;
 
+typedef struct typed_entity_array typed_entity_array;
 struct typed_entity_array
 {
     Arena*          arena;
@@ -15,22 +17,24 @@ struct typed_entity_array
     size_t          count;
 };
 
+typedef struct EntityManager EntityManager;
 struct EntityManager
 {
-    static EntityID ID;
-    uint64          next_local_counter = 1ULL;
+    uint64 next_local_counter;
 
     // TODO: Should be a pool
-    VectorArena<Entity, 100'000> Entities;
+    VectorArena Entities;
 
-    typed_entity_array by_type[ENTITY(Count)];
+    typed_entity_array by_type[Entity_Type_Count];
 };
 
-void                  InitEntityManager(NonNullPtr<World> world);
-void                  ShutdownEntityManager();
-EntityManager&        GetEntityManager();
-EntityTemplate*       RegisterEntity(EntityManager& manager, Entity* base, DerivedType entity);
-[[nodiscard]] Entity* allocate_entity(EntityManager& manager, NonNullPtr<const Class> derived_type_class);
-void                  UpdateEntityManager(EntityManager& manager);
-[[nodiscard]] Entity* deserialize_entity(Archive& archive, EntityManager& manager);
-void                  update_local_counter(EntityManager& manager, EntityID entity_id);
+extern EntityID g_entity_manager_id;
+
+void            InitEntityManager(World* world);
+void            ShutdownEntityManager(void);
+EntityManager*  GetEntityManager(void);
+EntityTemplate* RegisterEntity(EntityManager* manager, Entity* base, DerivedType entity);
+Entity*         allocate_entity(EntityManager* manager, const Class* derived_type_class);
+void            UpdateEntityManager(EntityManager* manager);
+Entity*         deserialize_entity(Archive* archive, EntityManager* manager);
+void            update_local_counter(EntityManager* manager, EntityID entity_id);