Confusion around serializing SharedComponentData

I'm trying to figure out how to serialize a world that has shared components and I'm running into issues. The shared components do not appear to be serializing. Below a test case that tries to get it to work and I'm unsure of what I'm doing incorrectly.

Code (CSharp):

1. public struct SharedData : ISharedComponentData
2. {
3.     public int value;
4. }
5.  
6. [Test]
7. public unsafe void TestSharedDataSerialization()
8. {
9.     World world = new World("World 1");
10.  
11.     Entity entity = world.EntityManager.CreateEntity(
12.         world.EntityManager.CreateArchetype(typeof(TestComponentFloat)));
13.    
14.     SharedData data = default;
15.     data.value = 10;
16.    
17.     world.EntityManager.AddSharedComponentData(entity, data);
18.     Assert.IsTrue(world.EntityManager.GetSharedComponentData<SharedData>(entity).value == 10);
19.    
20.     // Needing, the apparent need, two writers to so that I can read in the reverse order seems odd
21.     MemoryBinaryWriter writer1 = new MemoryBinaryWriter();
22.     MemoryBinaryWriter writer2 = new MemoryBinaryWriter();
23.    
24.     SerializeUtility.SerializeWorld(world.EntityManager, writer1, out int[] sc);
25.    
26.     SerializeUtility.SerializeSharedComponents(world.EntityManager, writer2, sc);
27.    
28.     MemoryBinaryReader reader1 = new MemoryBinaryReader(writer1.Data);
29.     MemoryBinaryReader reader2 = new MemoryBinaryReader(writer2.Data);
30.    
31.     World world2 = new World("World 2");
32.  
33.     // It appears I have to do shared comps first (reverse order) or the length in the deserialize world
34.     // fails
35.     SerializeUtility.DeserializeSharedComponents(world2.EntityManager, reader2);
36.        
37.     ExclusiveEntityTransaction transaction = world2.EntityManager.BeginExclusiveEntityTransaction();
38.    
39.     SerializeUtility.DeserializeWorld(transaction, reader1, sc.Length);
40.    
41.     world2.EntityManager.EndExclusiveEntityTransaction();
42.  
43.     NativeArray<Entity> entities = world2.EntityManager.GetAllEntities(Allocator.Temp);
44.    
45.     Assert.IsTrue(world2.EntityManager.HasComponent<SharedData>(entities[0]));
46.    
47.     // Test below fails with value equal to 0
48.     Assert.IsTrue(world2.EntityManager.GetSharedComponentData<SharedData>(entities[0]).value == 10);
49.    
50.     entities.Dispose();
51.     writer1.Dispose();
52.     writer2.Dispose();
53.     world.Dispose();
54.     world2.Dispose();
55. }

 

What version of entities are you using? I don't even see SerializeSharedComponents method

 

0.1.1