wip entity deserialization phase 1. Unit test not passing because of globals that assume only one entity manager / game state.

Game/Entity/EntityManager.cpp

@@ -1,6 +1,7 @@
 #include <Entity/EntityManager.h>
 
 #include <Core/Common/EnumUtils.h>
+#include <Core/Common/serialization.h>
 #include <Data/World.h>
 #include <Entity/Entity.h>
 #include <Entity/entity_types.h>
@@ -67,7 +68,7 @@ EntityTemplate* RegisterEntity(EntityManager& manager, Entity* base, DerivedType
     return ptr;
 }
 
-Entity* allocate_entity(EntityManager& manager, NonNullPtr<Class> derived_type_class)
+Entity* allocate_entity(EntityManager& manager, NonNullPtr<const Class> derived_type_class)
 {
     Assert(derived_type_class->kind < ENTITY(Count));
     Assert(derived_type_class->size_of >= sizeof(EntityTemplate));
@@ -76,6 +77,7 @@ Entity* allocate_entity(EntityManager& manager, NonNullPtr<Class> derived_type_c
 
     Entity base_template       = {};
     base_template.derived_kind = derived_type_class;
+    base_template.is_dirty     = true;
 
     manager.Entities.PushBack(base_template);
     Entity* base_ptr = manager.Entities.Back();
@@ -118,3 +120,24 @@ void UpdateEntityManager(EntityManager& manager)
         }
     }
 }
+
+Entity* deserialize_entity(Archive& ar, EntityManager& manager)
+{
+    Assert(ar.loading);
+
+    String class_name;
+    SERIALIZE(ar, Class, class_name);
+
+    NonNullPtr<const Class> class_ptr = find_class_by_name(class_name);
+
+    NonNullPtr<Entity> entity_base = allocate_entity(manager, class_ptr);
+
+    serialize(ar, entity_base);
+
+    if (entity_base->ID >= EntityManager::ID)
+    {
+        EntityManager::ID = entity_base->ID + 1;
+    }
+
+    entity_base->is_dirty = false;
+}