예제 #1
0
        public void EntityDiffer_GetChanges_IgnoresSystemState()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var entityGuid = CreateEntityGuid();
                var entity     = SrcEntityManager.CreateEntity();
                SrcEntityManager.AddComponentData(entity, entityGuid);

                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp)) {}

                SrcEntityManager.AddComponentData(entity, new EcsState1 {
                    Value = 9
                });
                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.IsFalse(changes.AnyChanges);
                }

                SrcEntityManager.SetComponentData(entity, new EcsState1 {
                    Value = 10
                });
                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.IsFalse(changes.AnyChanges);
                }

                // NOTE: the system state component being copied to shadow world is not required by the public API.
                //       This is simply defining the expected internal behaviour.
                Assert.AreEqual(10, differ.ShadowEntityManager.GetComponentData <EcsState1>(entity).Value);
            }
        }
예제 #2
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        public void EntityPatcher_ApplyChanges_RemapEntityReferences()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                // Create extra entity to make sure test doesn't accidentally succeed with no remapping
                SrcEntityManager.CreateEntity();

                var entityGuid0 = CreateEntityGuid();
                var entityGuid1 = CreateEntityGuid();

                var e0 = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestDataEntity));
                var e1 = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestDataEntity));

                SrcEntityManager.SetComponentData(e0, entityGuid0);
                SrcEntityManager.SetComponentData(e1, entityGuid1);

                SrcEntityManager.SetComponentData(e0, new EcsTestDataEntity {
                    value1 = e1
                });
                SrcEntityManager.SetComponentData(e1, new EcsTestDataEntity {
                    value1 = e0
                });

                PushChanges(differ, DstEntityManager);

                Assert.AreEqual(GetEntity(DstEntityManager, entityGuid1), GetComponentData <EcsTestDataEntity>(DstEntityManager, entityGuid0).value1);
                Assert.AreEqual(GetEntity(DstEntityManager, entityGuid0), GetComponentData <EcsTestDataEntity>(DstEntityManager, entityGuid1).value1);
            }
        }
예제 #3
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        public void EntityDiffer_GetChanges_CreateEntityAndSetSharedComponentData_IncrementalChanges_ManagedComponents()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var entity = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestSharedComp), typeof(EcsTestManagedComponent));

                SrcEntityManager.SetComponentData(entity, CreateEntityGuid());
                SrcEntityManager.SetComponentData(entity, new EcsTestManagedComponent {
                    value = "SomeString"
                });
                SrcEntityManager.SetSharedComponentData(entity, new EcsTestSharedComp {
                    value = 2
                });

                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.IsTrue(changes.HasForwardChangeSet);
                    Assert.AreEqual(1, changes.ForwardChangeSet.CreatedEntityCount);
                    Assert.AreEqual(3, changes.ForwardChangeSet.AddComponents.Length);
                    Assert.AreEqual(1, changes.ForwardChangeSet.SetComponents.Length);
                    Assert.AreEqual(1, changes.ForwardChangeSet.SetSharedComponents.Length);
                    Assert.AreEqual(1, changes.ForwardChangeSet.SetManagedComponents.Length);
                }
            }
        }
예제 #4
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        [StandaloneFixme] // No support for PinGCObject
        public void EntityPatcher_ApplyChanges_RemapEntityReferencesInManagedComponentCollection()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                // Create extra entity to make sure test doesn't accidentally succeed with no remapping
                SrcEntityManager.CreateEntity();

                var entityGuid0 = CreateEntityGuid();
                var entityGuid1 = CreateEntityGuid();

                var e0 = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestManagedDataEntityCollection));
                var e1 = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestManagedDataEntityCollection));

                SrcEntityManager.SetComponentData(e0, entityGuid0);
                SrcEntityManager.SetComponentData(e1, entityGuid1);

                SrcEntityManager.SetComponentData(e0, new EcsTestManagedDataEntityCollection(new string[] { e1.ToString() }, new Entity[] { e1, e1, e1 }));
                SrcEntityManager.SetComponentData(e1, new EcsTestManagedDataEntityCollection(new string[] { e0.ToString() }, new Entity[] { e0, e0, e0 }));

                PushChanges(differ, DstEntityManager);

                var c0 = GetManagedComponentData <EcsTestManagedDataEntityCollection>(DstEntityManager, entityGuid0);
                var c1 = GetManagedComponentData <EcsTestManagedDataEntityCollection>(DstEntityManager, entityGuid1);
                Assert.AreEqual(GetEntity(DstEntityManager, entityGuid1), c0.value1[0]);
                Assert.AreEqual(GetEntity(DstEntityManager, entityGuid1), c0.value1[1]);
                Assert.AreEqual(GetEntity(DstEntityManager, entityGuid1), c0.value1[2]);
                Assert.AreEqual(GetEntity(DstEntityManager, entityGuid0), c1.value1[0]);
                Assert.AreEqual(GetEntity(DstEntityManager, entityGuid0), c1.value1[1]);
                Assert.AreEqual(GetEntity(DstEntityManager, entityGuid0), c1.value1[2]);
            }
        }
        public void PerformanceTest_EntityDiffer_GetChanges_ForwardChangesOnly_SingleChange(int entityCount)
        {
            CreateEntitiesWithMockComponentData(SrcEntityManager, entityCount, typeof(EcsTestData), typeof(EcsTestData2), typeof(EcsTestSharedComp));

            var entity = default(Entity);

            using (var entities = SrcEntityManager.GetAllEntities(Allocator.Temp))
            {
                entity = entities[0];
            }

            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                // Fast forward the shadow world
                using (differ.GetChanges(EntityManagerDifferOptions.FastForwardShadowWorld, Allocator.TempJob))
                {
                }

                var startValue = 99;

                Measure.Method(() =>
                {
                    SrcEntityManager.SetComponentData(entity, new EcsTestData(startValue++));

                    // Get changes with all options selected
                    using (differ.GetChanges(EntityManagerDifferOptions.IncludeForwardChangeSet, Allocator.TempJob))
                    {
                    }
                })
                .Definition("EntityDiffer")
                .WarmupCount(1)
                .MeasurementCount(100)
                .Run();
            }
        }
예제 #6
0
        public void EntityPatcher_ApplyChanges_CreateEntityWithTestData()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var entity = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestData));

                var entityGuid = CreateEntityGuid();

                SrcEntityManager.SetComponentData(entity, entityGuid);
                SrcEntityManager.SetComponentData(entity, new EcsTestData {
                    value = 9
                });

                PushChanges(differ, DstEntityManager);

                Assert.AreEqual(1, DstEntityManager.Debug.EntityCount);
                Assert.AreEqual(9, GetComponentData <EcsTestData>(DstEntityManager, entityGuid).value);

                // Mutate some component data.
                SrcEntityManager.SetComponentData(entity, entityGuid);
                SrcEntityManager.SetComponentData(entity, new EcsTestData {
                    value = 10
                });

                PushChanges(differ, DstEntityManager);

                Assert.AreEqual(1, DstEntityManager.Debug.EntityCount);
                Assert.AreEqual(10, GetComponentData <EcsTestData>(DstEntityManager, entityGuid).value);

                // Destroy the entity
                SrcEntityManager.DestroyEntity(entity);
                PushChanges(differ, DstEntityManager);
                Assert.AreEqual(0, DstEntityManager.Debug.EntityCount);
            }
        }
예제 #7
0
        public unsafe void EntityDiffer_GetChanges_BlobAssets_SetComponent_SharedAsset()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var blobAssetReference = BlobAssetReference <int> .Create(10);

                try
                {
                    for (var i = 0; i < 100; i++)
                    {
                        var entity = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestDataBlobAssetRef));
                        SrcEntityManager.SetComponentData(entity, CreateEntityGuid());
                        SrcEntityManager.SetComponentData(entity, new EcsTestDataBlobAssetRef {
                            value = blobAssetReference
                        });
                    }

                    using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                    {
                        Assert.IsTrue(changes.HasForwardChangeSet);
                        var forward = changes.ForwardChangeSet;
                        Assert.That(forward.CreatedBlobAssets.Length, Is.EqualTo(1));
                        Assert.That(forward.BlobAssetReferenceChanges.Length, Is.EqualTo(100));
                        Assert.That(forward.BlobAssetData.Length, Is.EqualTo(sizeof(int)));
                        Assert.That(*(int *)forward.BlobAssetData.GetUnsafePtr(), Is.EqualTo(10));
                    }
                }
                finally
                {
                    blobAssetReference.Dispose();
                }
            }
        }
예제 #8
0
        public void EntityDiffer_GetChanges_CreateEntityAndSetComponentData_IncrementalChanges()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var entityGuid = CreateEntityGuid();
                var entity     = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestData));

                SrcEntityManager.SetComponentData(entity, entityGuid);
                SrcEntityManager.SetComponentData(entity, new EcsTestData {
                    value = 9
                });

                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.IsTrue(changes.AnyChanges);
                }

                // Mutate some component data.
                SrcEntityManager.SetComponentData(entity, entityGuid);
                SrcEntityManager.SetComponentData(entity, new EcsTestData {
                    value = 10
                });

                // The entityGuid value is the same so it should not be picked up during change tracking.
                // We should only see the one data change.
                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    // The ForwardChangeSet will contain a set value 10
                    Assert.IsTrue(changes.HasForwardChangeSet);
                    Assert.AreEqual(0, changes.ForwardChangeSet.DestroyedEntityCount);
                    Assert.AreEqual(0, changes.ForwardChangeSet.CreatedEntityCount);
                    Assert.AreEqual(1, changes.ForwardChangeSet.SetComponents.Length);
                    Assert.AreEqual(0, changes.ForwardChangeSet.AddComponents.Length);

                    // The ReverseChangeSet will contain a set value 9
                    Assert.IsTrue(changes.HasReverseChangeSet);
                    Assert.AreEqual(0, changes.ReverseChangeSet.DestroyedEntityCount);
                    Assert.AreEqual(0, changes.ReverseChangeSet.CreatedEntityCount);
                    Assert.AreEqual(1, changes.ReverseChangeSet.SetComponents.Length);
                    Assert.AreEqual(0, changes.ReverseChangeSet.AddComponents.Length);
                }

                SrcEntityManager.DestroyEntity(entity);
                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.IsTrue(changes.HasForwardChangeSet);
                    Assert.AreEqual(1, changes.ForwardChangeSet.DestroyedEntityCount);
                    Assert.AreEqual(0, changes.ForwardChangeSet.CreatedEntityCount);
                    Assert.AreEqual(0, changes.ForwardChangeSet.SetComponents.Length);
                    Assert.AreEqual(0, changes.ForwardChangeSet.RemoveComponents.Length);

                    // In this case the ReverseChangeSet should describe how to get this entity back in it's entirety
                    Assert.IsTrue(changes.HasReverseChangeSet);
                    Assert.AreEqual(0, changes.ReverseChangeSet.DestroyedEntityCount);
                    Assert.AreEqual(1, changes.ReverseChangeSet.CreatedEntityCount);
                    Assert.AreEqual(2, changes.ReverseChangeSet.AddComponents.Length);
                    Assert.AreEqual(2, changes.ReverseChangeSet.SetComponents.Length);
                }
            }
        }
예제 #9
0
        public unsafe void EntityDiffer_GetChanges_BlobAssets_SetComponent_SameContentHash()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var blobAssetReference0 = BlobAssetReference <int> .Create(10);

                var blobAssetReference1 = BlobAssetReference <int> .Create(10);

                var entity0 = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestDataBlobAssetRef));

                SrcEntityManager.SetComponentData(entity0, CreateEntityGuid());
                SrcEntityManager.SetComponentData(entity0, new EcsTestDataBlobAssetRef
                {
                    value = blobAssetReference0
                });

                var entity1 = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestDataBlobAssetRef));

                SrcEntityManager.SetComponentData(entity1, CreateEntityGuid());
                SrcEntityManager.SetComponentData(entity1, new EcsTestDataBlobAssetRef
                {
                    value = blobAssetReference1
                });

                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.IsTrue(changes.HasForwardChangeSet);
                    var forward = changes.ForwardChangeSet;

                    // Only one blob asset is created
                    Assert.That(forward.CreatedBlobAssets.Length, Is.EqualTo(1));
                    Assert.That(forward.DestroyedBlobAssets.Length, Is.EqualTo(0));

                    Assert.That(forward.BlobAssetReferenceChanges.Length, Is.EqualTo(2));
                    Assert.That(forward.BlobAssetReferenceChanges[0].Value, Is.EqualTo(forward.CreatedBlobAssets[0].Hash));
                    Assert.That(forward.BlobAssetReferenceChanges[1].Value, Is.EqualTo(forward.CreatedBlobAssets[0].Hash));

                    Assert.That(forward.BlobAssetData.Length, Is.EqualTo(sizeof(int)));
                    Assert.That(*(int *)forward.BlobAssetData.GetUnsafePtr(), Is.EqualTo(10));
                }

                SrcEntityManager.DestroyEntity(entity1);

                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.That(changes.ForwardChangeSet.DestroyedBlobAssets.Length, Is.EqualTo(0));
                }

                SrcEntityManager.DestroyEntity(entity0);

                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.That(changes.ForwardChangeSet.DestroyedBlobAssets.Length, Is.EqualTo(1));
                }

                blobAssetReference0.Dispose();
                blobAssetReference1.Dispose();
            }
        }
예제 #10
0
        public void EntityManagerPatcher_ApplyChanges_NewEntityIsReplicatedIntoExistingPrefabInstances([Values(1, 10)] int instanceCount)
        {
            using (var differ = new EntityManagerDiffer(SrcWorld, Allocator.TempJob))
                using (var patcher = new EntityManagerPatcher(DstWorld, Allocator.TempJob))
                {
                    var rootEntityGuid  = CreateEntityGuid();
                    var childEntityGuid = CreateEntityGuid();

                    var srcRootEntity = SrcEntityManager.CreateEntity(typeof(EcsTestDataEntity), typeof(Prefab), typeof(LinkedEntityGroup));

                    SrcEntityManager.AddComponentData(srcRootEntity, rootEntityGuid);
                    SrcEntityManager.GetBuffer <LinkedEntityGroup>(srcRootEntity).Add(srcRootEntity);

                    PushChanges(differ, patcher);

                    var dstRootEntity = GetEntity(DstEntityManager, rootEntityGuid);

                    // Instantiate root in dst world
                    var dstRootInstances = new Entity[instanceCount];
                    for (var i = 0; i != dstRootInstances.Length; i++)
                    {
                        var dstRootInstance = DstEntityManager.Instantiate(dstRootEntity);
                        dstRootInstances[i] = dstRootInstance;
                        Assert.AreEqual(1, DstEntityManager.GetBuffer <LinkedEntityGroup>(dstRootInstance).Length);
                        Assert.AreEqual(dstRootInstance, DstEntityManager.GetBuffer <LinkedEntityGroup>(dstRootInstance)[0].Value);
                    }

                    // Add a new entity into the prefab
                    var srcChildEntity = SrcEntityManager.CreateEntity(typeof(EcsTestDataEntity), typeof(Prefab));
                    SrcEntityManager.AddComponentData(srcChildEntity, childEntityGuid);
                    SrcEntityManager.GetBuffer <LinkedEntityGroup>(srcRootEntity).Add(srcChildEntity);

                    SrcEntityManager.SetComponentData(srcRootEntity, new EcsTestDataEntity {
                        value1 = srcChildEntity
                    });
                    SrcEntityManager.SetComponentData(srcChildEntity, new EcsTestDataEntity {
                        value1 = srcRootEntity
                    });

                    PushChanges(differ, patcher);

                    for (var i = 0; i != dstRootInstances.Length; i++)
                    {
                        var dstRootInstance = dstRootInstances[i];

                        var dstInstanceGroup = DstEntityManager.GetBuffer <LinkedEntityGroup>(dstRootInstance);
                        Assert.AreEqual(2, dstInstanceGroup.Length);
                        Assert.AreEqual(dstRootInstance, dstInstanceGroup[0].Value);
                        var dstChildInstance = dstInstanceGroup[1].Value;

                        Assert.IsTrue(DstEntityManager.HasComponent <Prefab>(dstRootEntity));
                        Assert.IsFalse(DstEntityManager.HasComponent <Prefab>(dstRootInstance));
                        Assert.IsFalse(DstEntityManager.HasComponent <Prefab>(dstChildInstance));

                        Assert.AreEqual(dstRootInstance, DstEntityManager.GetComponentData <EcsTestDataEntity>(dstChildInstance).value1);
                        Assert.AreEqual(dstChildInstance, DstEntityManager.GetComponentData <EcsTestDataEntity>(dstRootInstance).value1);
                    }
                }
        }
        public void ReplaceChangedEntities()
        {
            CreateTestData(out var entity, out var metaEntity, 5, 7);
            DstEntityManager.CopyAndReplaceEntitiesFrom(SrcEntityManager);

            SrcEntityManager.SetComponentData(entity, new EcsTestData(11));
            DstEntityManager.CopyAndReplaceEntitiesFrom(SrcEntityManager);
            TestValues(entity, metaEntity, 11, 7);
        }
예제 #12
0
        public unsafe void EntityDiffer_GetChanges_BlobAssets_SetComponent_TypeMemoryOrdering()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var blobAssetReferences = new NativeArray <BlobAssetReference <int> >(100, Allocator.Temp);

                for (var i = 0; i < blobAssetReferences.Length; i++)
                {
                    // Construct the archetype in an order which will NOT match the memory order.
                    var archetype = SrcEntityManager.CreateArchetype(
                        typeof(EntityGuid),
                        typeof(EcsTestDataBlobAssetRef),
                        typeof(EcsTestData4));

                    // Validate the assumption that the archetype is created in this way.
                    Assert.That(archetype.Archetype->TypeMemoryOrder[0], Is.EqualTo(0));
                    Assert.That(archetype.Archetype->TypeMemoryOrder[1], Is.EqualTo(2));
                    Assert.That(archetype.Archetype->TypeMemoryOrder[2], Is.EqualTo(1));

                    // Validate the component sizes are different
                    Assert.That(UnsafeUtility.SizeOf <EcsTestDataBlobAssetRef>(), Is.Not.EqualTo(UnsafeUtility.SizeOf <EcsTestData4>()));

                    var entity = SrcEntityManager.CreateEntity(archetype);

                    blobAssetReferences[i] = BlobAssetReference <int> .Create(i);

                    SrcEntityManager.SetComponentData(entity, CreateEntityGuid());
                    SrcEntityManager.SetComponentData(entity, new EcsTestData4());
                    SrcEntityManager.SetComponentData(entity, new EcsTestDataBlobAssetRef
                    {
                        value = blobAssetReferences[i]
                    });
                }

                try
                {
                    using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                    {
                        Assert.IsTrue(changes.HasForwardChangeSet);
                        var forward = changes.ForwardChangeSet;
                        Assert.That(forward.CreatedBlobAssets.Length, Is.EqualTo(100));
                        Assert.That(forward.BlobAssetReferenceChanges.Length, Is.EqualTo(100));
                        Assert.That(forward.BlobAssetData.Length, Is.EqualTo(sizeof(int) * 100));
                    }
                }
                finally
                {
                    for (var i = 0; i < blobAssetReferences.Length; i++)
                    {
                        blobAssetReferences[i].Dispose();
                    }

                    blobAssetReferences.Dispose();
                }
            }
        }
예제 #13
0
        public void EntityDiffer_GetChanges_CreateEntityAndSetComponentData_WithoutFastForward_ManagedComponents()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var entity = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestData), typeof(EcsTestManagedComponent));

                SrcEntityManager.SetComponentData(entity, CreateEntityGuid());
                SrcEntityManager.SetComponentData(entity, new EcsTestData {
                    value = 9
                });
                SrcEntityManager.SetComponentData(entity, new EcsTestManagedComponent {
                    value = "SomeString"
                });

                const EntityManagerDifferOptions options = EntityManagerDifferOptions.IncludeForwardChangeSet |
                                                           EntityManagerDifferOptions.IncludeReverseChangeSet;

                using (var changes = differ.GetChanges(options, Allocator.Temp))
                {
                    // ForwardChanges defines all operations needed to go from the shadow state to the current state.
                    Assert.IsTrue(changes.HasForwardChangeSet);
                    Assert.AreEqual(0, changes.ForwardChangeSet.DestroyedEntityCount);
                    Assert.AreEqual(1, changes.ForwardChangeSet.CreatedEntityCount);
                    Assert.AreEqual(3, changes.ForwardChangeSet.AddComponents.Length);
                    Assert.AreEqual(2, changes.ForwardChangeSet.SetComponents.Length);
                    Assert.AreEqual(1, changes.ForwardChangeSet.SetManagedComponents.Length);

                    // ReverseChanges defines all operations needed to go from the current state back to the last shadow state. (i.e. Undo)
                    Assert.IsTrue(changes.HasReverseChangeSet);
                    Assert.AreEqual(1, changes.ReverseChangeSet.DestroyedEntityCount);
                    Assert.AreEqual(0, changes.ReverseChangeSet.CreatedEntityCount);
                    Assert.AreEqual(0, changes.ReverseChangeSet.AddComponents.Length);
                    Assert.AreEqual(0, changes.ReverseChangeSet.SetComponents.Length);
                    Assert.AreEqual(0, changes.ReverseChangeSet.SetManagedComponents.Length);
                }

                // Since we did not fast forward the inner shadow world. We should be able to generate the exact same changes again.
                using (var changes = differ.GetChanges(options, Allocator.Temp))
                {
                    Assert.IsTrue(changes.HasForwardChangeSet);
                    Assert.AreEqual(0, changes.ForwardChangeSet.DestroyedEntityCount);
                    Assert.AreEqual(1, changes.ForwardChangeSet.CreatedEntityCount);
                    Assert.AreEqual(3, changes.ForwardChangeSet.AddComponents.Length);
                    Assert.AreEqual(2, changes.ForwardChangeSet.SetComponents.Length);
                    Assert.AreEqual(1, changes.ForwardChangeSet.SetManagedComponents.Length);

                    Assert.IsTrue(changes.HasReverseChangeSet);
                    Assert.AreEqual(1, changes.ReverseChangeSet.DestroyedEntityCount);
                    Assert.AreEqual(0, changes.ReverseChangeSet.CreatedEntityCount);
                    Assert.AreEqual(0, changes.ReverseChangeSet.AddComponents.Length);
                    Assert.AreEqual(0, changes.ReverseChangeSet.SetComponents.Length);
                    Assert.AreEqual(0, changes.ReverseChangeSet.SetManagedComponents.Length);
                }
            }
        }
예제 #14
0
        public void EntityDiffer_GetChanges_BlobAssets_SetBuffer_MultipleEntities()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var blobAssetReferences = new NativeArray <BlobAssetReference <int> >(100, Allocator.Temp);

                for (var i = 0; i < blobAssetReferences.Length; i++)
                {
                    blobAssetReferences[i] = BlobAssetReference <int> .Create(i);
                }

                for (var i = 0; i < blobAssetReferences.Length; i += 4)
                {
                    var entity = SrcEntityManager.CreateEntity(typeof(EntityGuid));

                    SrcEntityManager.SetComponentData(entity, CreateEntityGuid());

                    var buffer = SrcEntityManager.AddBuffer <EcsTestDataBlobAssetElement>(entity);

                    buffer.Add(new EcsTestDataBlobAssetElement {
                        blobElement = blobAssetReferences[i + 0]
                    });
                    buffer.Add(new EcsTestDataBlobAssetElement {
                        blobElement = blobAssetReferences[i + 1]
                    });
                    buffer.Add(new EcsTestDataBlobAssetElement {
                        blobElement = blobAssetReferences[i + 2]
                    });
                    buffer.Add(new EcsTestDataBlobAssetElement {
                        blobElement = blobAssetReferences[i + 3]
                    });
                }

                try
                {
                    using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                    {
                        Assert.IsTrue(changes.HasForwardChangeSet);
                        var forward = changes.ForwardChangeSet;
                        Assert.That(forward.CreatedBlobAssets.Length, Is.EqualTo(100));
                        Assert.That(forward.BlobAssetReferenceChanges.Length, Is.EqualTo(100));
                        Assert.That(forward.BlobAssetData.Length, Is.EqualTo(sizeof(int) * 100));
                    }
                }
                finally
                {
                    for (var i = 0; i < blobAssetReferences.Length; i++)
                    {
                        blobAssetReferences[i].Dispose();
                    }

                    blobAssetReferences.Dispose();
                }
            }
        }
예제 #15
0
 public void EntityPatcher_ApplyChanges_CreateEntityWithDisabledComponent()
 {
     using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
     {
         var entityGuid = CreateEntityGuid();
         var entity     = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(Disabled));
         SrcEntityManager.SetComponentData(entity, entityGuid);
         PushChanges(differ, DstEntityManager);
         Assert.IsTrue(HasComponent <Disabled>(DstEntityManager, entityGuid));
     }
 }
예제 #16
0
 public void EntityManagerPatcher_ApplyChanges_CreateEntityWithPrefabComponent()
 {
     using (var differ = new EntityManagerDiffer(SrcWorld, Allocator.TempJob))
         using (var patcher = new EntityManagerPatcher(DstWorld, Allocator.TempJob))
         {
             var entityGuid = CreateEntityGuid();
             var entity     = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(Prefab));
             SrcEntityManager.SetComponentData(entity, entityGuid);
             PushChanges(differ, patcher);
             Assert.IsTrue(HasComponent <Prefab>(DstEntityManager, entityGuid));
         }
 }
예제 #17
0
        public void EntityDiffer_GetChanges_CreateEntityAndSetComponentData_WithFastForward_ManagedComponents()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var entity = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestData), typeof(EcsTestManagedComponent));

                var entityGuid = CreateEntityGuid();

                SrcEntityManager.SetComponentData(entity, entityGuid);
                SrcEntityManager.SetComponentData(entity, new EcsTestData {
                    value = 9
                });
                SrcEntityManager.SetComponentData(entity, new EcsTestManagedComponent {
                    value = "SomeString"
                });

                const EntityManagerDifferOptions options = EntityManagerDifferOptions.IncludeForwardChangeSet |
                                                           EntityManagerDifferOptions.IncludeReverseChangeSet |
                                                           EntityManagerDifferOptions.FastForwardShadowWorld;

                using (var changes = differ.GetChanges(options, Allocator.Temp))
                {
                    // Forward changes is all changes needed to go from the shadow state to the current state.
                    Assert.IsTrue(changes.HasForwardChangeSet);
                    Assert.AreEqual(0, changes.ForwardChangeSet.DestroyedEntityCount);
                    Assert.AreEqual(1, changes.ForwardChangeSet.CreatedEntityCount);
                    Assert.AreEqual(3, changes.ForwardChangeSet.AddComponents.Length);
                    Assert.AreEqual(2, changes.ForwardChangeSet.SetComponents.Length);
                    Assert.AreEqual(1, changes.ForwardChangeSet.SetManagedComponents.Length);

                    // Reverse changes is all changes needed to go from the current state back to the last shadow state. (i.e. Undo)
                    Assert.IsTrue(changes.HasReverseChangeSet);
                    Assert.AreEqual(1, changes.ReverseChangeSet.DestroyedEntityCount);
                    Assert.AreEqual(0, changes.ReverseChangeSet.CreatedEntityCount);
                    Assert.AreEqual(0, changes.ReverseChangeSet.AddComponents.Length);
                    Assert.AreEqual(0, changes.ReverseChangeSet.SetComponents.Length);
                    Assert.AreEqual(0, changes.ReverseChangeSet.SetManagedComponents.Length);
                }

                // The inner shadow world was updated during the last call which means no new changes should be found.
                using (var changes = differ.GetChanges(options, Allocator.Temp))
                {
                    Assert.IsFalse(changes.AnyChanges);
                }
            }
        }
예제 #18
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        public void EntityDiffer_GetChanges_BlobAssets_SetComponent_Null()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var entity = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestDataBlobAssetRef));
                SrcEntityManager.SetComponentData(entity, CreateEntityGuid());

                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.IsTrue(changes.HasForwardChangeSet);
                    var forward = changes.ForwardChangeSet;
                    Assert.That(forward.BlobAssetReferenceChanges.Length, Is.EqualTo(1));
                    Assert.That(forward.BlobAssetReferenceChanges[0].Value, Is.EqualTo(0));
                    Assert.That(forward.CreatedBlobAssets.Length, Is.EqualTo(0));
                    Assert.That(forward.BlobAssetData.Length, Is.EqualTo(0));
                }
            }
        }
예제 #19
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        public void EntityManagerDiffer_GetChanges_DuplicateEntityGuidThrows()
        {
            using (var tracker = new EntityManagerDiffer(SrcWorld, Allocator.TempJob))
            {
                var entityGuid = CreateEntityGuid();

                var entity0 = SrcEntityManager.CreateEntity(typeof(EntityGuid));
                var entity1 = SrcEntityManager.CreateEntity(typeof(EntityGuid));

                SrcEntityManager.SetComponentData(entity0, entityGuid);
                SrcEntityManager.SetComponentData(entity1, entityGuid);

                Assert.Throws <DuplicateEntityGuidException>(() =>
                {
                    using (tracker.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                    {
                    }
                });
            }
        }
예제 #20
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        public void EntityPatcher_ApplyChanges_BlobAssets_CreateEntityWithBlobAssetReference()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var blobAssetReference = BlobAssetReference <int> .Create(11);

                var entity     = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestDataBlobAssetRef));
                var entityGuid = CreateEntityGuid();

                SrcEntityManager.SetComponentData(entity, entityGuid);
                SrcEntityManager.SetComponentData(entity, new EcsTestDataBlobAssetRef {
                    value = blobAssetReference
                });

                PushChanges(differ, DstEntityManager);

                Assert.AreEqual(1, DstEntityManager.Debug.EntityCount);
                Assert.AreEqual(11, GetComponentData <EcsTestDataBlobAssetRef>(DstEntityManager, entityGuid).value.Value);
            }
        }
예제 #21
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        public void EntityDiffer_GetChanges_DuplicateEntityGuidThrows()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                void GetChanges()
                {
                    using (differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp)) { }
                }

                var entityGuid0 = CreateEntityGuid();
                var entityGuid1 = CreateEntityGuid();
                var entityGuid2 = CreateEntityGuid();
                var entityGuid3 = CreateEntityGuid();

                var entity0 = SrcEntityManager.CreateEntity(typeof(EntityGuid));
                var entity1 = SrcEntityManager.CreateEntity(typeof(EntityGuid));
                var entity2 = SrcEntityManager.CreateEntity(typeof(EntityGuid));
                var entity3 = SrcEntityManager.CreateEntity(typeof(EntityGuid));

                SrcEntityManager.SetComponentData(entity0, entityGuid0);
                SrcEntityManager.SetComponentData(entity1, entityGuid1);
                SrcEntityManager.SetComponentData(entity2, entityGuid2);
                SrcEntityManager.SetComponentData(entity3, entityGuid3);

                Assert.DoesNotThrow(GetChanges);

                SrcEntityManager.SetComponentData(entity1, entityGuid0);
                SrcEntityManager.SetComponentData(entity2, entityGuid0);
                SrcEntityManager.SetComponentData(entity3, entityGuid0);

                var dup0 = Assert.Throws <DuplicateEntityGuidException>(GetChanges).DuplicateEntityGuids;
                Assert.That(dup0, Is.EquivalentTo(new[] { new DuplicateEntityGuid(entityGuid0, 3) }));

                SrcEntityManager.SetComponentData(entity0, entityGuid1);
                SrcEntityManager.SetComponentData(entity3, entityGuid1);

                var dup1 = Assert.Throws <DuplicateEntityGuidException>(GetChanges).DuplicateEntityGuids;
                Assert.That(dup1, Is.EquivalentTo(new[] { new DuplicateEntityGuid(entityGuid0, 1), new DuplicateEntityGuid(entityGuid1, 1) }));
            }
        }
예제 #22
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        public void EntityManagerPatcher_ApplyChanges_ChangeAppliesToAllPrefabInstances([Values] bool prefabTag)
        {
            using (var differ = new EntityManagerDiffer(SrcWorld, Allocator.TempJob))
                using (var patcher = new EntityManagerPatcher(DstWorld, Allocator.TempJob))
                {
                    // Create a prefab in the source world.
                    var entityGuid = CreateEntityGuid();
                    var prefab     = SrcEntityManager.CreateEntity();
                    SrcEntityManager.AddComponentData(prefab, entityGuid);
                    SrcEntityManager.AddComponentData(prefab, new EcsTestData());

                    if (prefabTag)
                    {
                        SrcEntityManager.AddComponentData(prefab, new Prefab());
                    }

                    // Sync to the dst world. At this point the dst world will have a single entity.
                    PushChanges(differ, patcher);

                    var dstPrefab = GetEntity(DstEntityManager, entityGuid);

                    // Spawn some more instances of this thing in the dst world.
                    var dstInstance0 = DstEntityManager.Instantiate(dstPrefab);
                    var dstInstance1 = DstEntityManager.Instantiate(dstPrefab);

                    // Mutate the original prefab in the src world.
                    SrcEntityManager.SetComponentData(prefab, new EcsTestData(10));

                    // Sync to the dst world.
                    PushChanges(differ, patcher);

                    // The changes should be propagated to all instances.
                    Assert.AreEqual(10, DstEntityManager.GetComponentData <EcsTestData>(dstPrefab).value);
                    Assert.AreEqual(10, DstEntityManager.GetComponentData <EcsTestData>(dstInstance0).value);
                    Assert.AreEqual(10, DstEntityManager.GetComponentData <EcsTestData>(dstInstance1).value);
                }
        }
        public unsafe void EntityDiffer_GetChanges_BlobAssets_SetComponent()
        {
            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                var blobAssetReference0 = BlobAssetReference <int> .Create(10);

                var entity = SrcEntityManager.CreateEntity(typeof(EntityGuid), typeof(EcsTestDataBlobAssetRef));

                SrcEntityManager.SetComponentData(entity, CreateEntityGuid());
                SrcEntityManager.SetComponentData(entity, new EcsTestDataBlobAssetRef
                {
                    value = blobAssetReference0
                });

                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.IsTrue(changes.HasForwardChangeSet);
                    var forward = changes.ForwardChangeSet;

                    Assert.That(forward.CreatedBlobAssets.Length, Is.EqualTo(1));
                    Assert.That(forward.DestroyedBlobAssets.Length, Is.EqualTo(0));

                    Assert.That(forward.BlobAssetReferenceChanges.Length, Is.EqualTo(1));
                    Assert.That(forward.BlobAssetReferenceChanges[0].Value, Is.EqualTo(forward.CreatedBlobAssets[0].Hash));

                    Assert.That(forward.BlobAssetData.Length, Is.EqualTo(sizeof(int)));
                    Assert.That(*(int *)forward.BlobAssetData.GetUnsafePtr(), Is.EqualTo(10));
                }

                blobAssetReference0.Release();

                var blobAssetReference1 = BlobAssetReference <int> .Create(20);

                SrcEntityManager.SetComponentData(entity, new EcsTestDataBlobAssetRef
                {
                    value = blobAssetReference1
                });

                using (var changes = differ.GetChanges(EntityManagerDifferOptions.Default, Allocator.Temp))
                {
                    Assert.IsTrue(changes.HasForwardChangeSet);

                    var forward = changes.ForwardChangeSet;
                    Assert.That(forward.CreatedBlobAssets.Length, Is.EqualTo(1));
                    Assert.That(forward.BlobAssetReferenceChanges.Length, Is.EqualTo(1));
                    Assert.That(forward.BlobAssetData.Length, Is.EqualTo(sizeof(int)));
                    Assert.That(*(int *)forward.BlobAssetData.GetUnsafePtr(), Is.EqualTo(20));
                    Assert.That(forward.BlobAssetReferenceChanges[0].Value, Is.EqualTo(forward.CreatedBlobAssets[0].Hash));

                    Assert.IsTrue(changes.HasReverseChangeSet);

                    var reverse = changes.ReverseChangeSet;
                    Assert.That(reverse.CreatedBlobAssets.Length, Is.EqualTo(1));
                    Assert.That(reverse.BlobAssetReferenceChanges.Length, Is.EqualTo(1));
                    Assert.That(reverse.BlobAssetData.Length, Is.EqualTo(sizeof(int)));
                    Assert.That(*(int *)reverse.BlobAssetData.GetUnsafePtr(), Is.EqualTo(10));
                    Assert.That(reverse.BlobAssetReferenceChanges[0].Value, Is.EqualTo(reverse.CreatedBlobAssets[0].Hash));
                }

                blobAssetReference1.Release();
            }
        }
        public void UndoRedoPrefabInstancesWithRelationship()
        {
            const int instanceCount       = 10;
            var       srcPrefabRootGuid   = CreateEntityGuid();
            var       srcPrefabLevel0Guid = CreateEntityGuid();
            var       prefabLevel1Guid    = CreateEntityGuid();

            const EntityManagerDifferOptions options = EntityManagerDifferOptions.IncludeForwardChangeSet |
                                                       EntityManagerDifferOptions.FastForwardShadowWorld;

            using (var differ = new EntityManagerDiffer(SrcEntityManager, Allocator.TempJob))
            {
                // Create Root Prefab entity with a Guid component
                var srcPrefabRoot = SrcEntityManager.CreateEntity(typeof(HierarchyComponent), typeof(Prefab), typeof(LinkedEntityGroup));
                SrcEntityManager.AddComponentData(srcPrefabRoot, srcPrefabRootGuid);
                SrcEntityManager.GetBuffer <LinkedEntityGroup>(srcPrefabRoot).Add(srcPrefabRoot);

                PushChanges(differ, DstEntityManager);

                using (var changes = differ.GetChanges(options, Allocator.TempJob))
                {
                    EntityPatcher.ApplyChangeSet(DstEntityManager, changes.ForwardChangeSet);
                }

                // Instantiate root prefab in dst world 10 times
                var dstPrefabRoot    = GetEntity(DstEntityManager, srcPrefabRootGuid);
                var dstInstanceRoots = new Entity[instanceCount];
                for (var i = 0; i != dstInstanceRoots.Length; i++)
                {
                    var dstInstanceRoot = DstEntityManager.Instantiate(dstPrefabRoot);
                    dstInstanceRoots[i] = dstInstanceRoot;
                    Assert.AreEqual(1, DstEntityManager.GetBuffer <LinkedEntityGroup>(dstInstanceRoot).Length);
                    Assert.AreEqual(dstInstanceRoot, DstEntityManager.GetBuffer <LinkedEntityGroup>(dstInstanceRoot)[0].Value);
                }

                // Add level 0 entity to the prefab
                var srcLevel0Prefab = SrcEntityManager.CreateEntity(typeof(HierarchyComponent), typeof(Prefab));
                SrcEntityManager.AddComponentData(srcLevel0Prefab, srcPrefabLevel0Guid);
                SrcEntityManager.GetBuffer <LinkedEntityGroup>(srcPrefabRoot).Add(srcLevel0Prefab);

                SrcEntityManager.SetComponentData(srcPrefabRoot, new HierarchyComponent {
                    Parent = Entity.Null, Child = srcLevel0Prefab
                });
                SrcEntityManager.SetComponentData(srcLevel0Prefab, new HierarchyComponent {
                    Parent = srcPrefabRoot, Child = Entity.Null
                });

                // Synchronize worlds, we now should have 10 instances in the world along with a level0 for each
                // and hierarchy matching the relationships create
                PushChanges(differ, DstEntityManager);

                for (var i = 0; i != dstInstanceRoots.Length; i++)
                {
                    var dstInstanceRoot   = dstInstanceRoots[i];
                    var dstInstanceGroup  = DstEntityManager.GetBuffer <LinkedEntityGroup>(dstInstanceRoot);
                    var dstInstanceLevel0 = dstInstanceGroup[1].Value;

                    Assert.AreEqual(2, dstInstanceGroup.Length);
                    Assert.AreEqual(dstInstanceRoot, dstInstanceGroup[0].Value);
                    Assert.AreEqual(dstInstanceLevel0, dstInstanceGroup[1].Value);

                    var hierarchyLevel0 = DstEntityManager.GetComponentData <HierarchyComponent>(dstInstanceLevel0);
                    var hierarchyRoot   = DstEntityManager.GetComponentData <HierarchyComponent>(dstInstanceRoot);

                    Assert.AreEqual(dstInstanceRoot, hierarchyLevel0.Parent);
                    Assert.AreEqual(dstInstanceLevel0, hierarchyRoot.Child);
                }

                // Add level 1 entity to the prefab
                var srcLevel1Prefab = SrcEntityManager.CreateEntity(typeof(HierarchyComponent), typeof(Prefab));
                SrcEntityManager.AddComponentData(srcLevel1Prefab, prefabLevel1Guid);
                SrcEntityManager.GetBuffer <LinkedEntityGroup>(srcPrefabRoot).Add(srcLevel1Prefab);

                SrcEntityManager.SetComponentData(srcLevel0Prefab, new HierarchyComponent {
                    Parent = srcPrefabRoot, Child = srcLevel1Prefab
                });
                SrcEntityManager.SetComponentData(srcLevel1Prefab, new HierarchyComponent {
                    Parent = srcLevel0Prefab, Child = Entity.Null
                });

                // Synchronize worlds, we now should have 10 instances of level 1 linked to their matching level 0
                PushChanges(differ, DstEntityManager);

                for (var i = 0; i != dstInstanceRoots.Length; i++)
                {
                    var dstRootInstance = dstInstanceRoots[i];

                    var dstInstanceGroup = DstEntityManager.GetBuffer <LinkedEntityGroup>(dstRootInstance);
                    Assert.AreEqual(3, dstInstanceGroup.Length);
                    Assert.AreEqual(dstRootInstance, dstInstanceGroup[0].Value);
                    var dstInstanceLevel0 = dstInstanceGroup[1].Value;
                    var dstInstanceLevel1 = dstInstanceGroup[2].Value;

                    Assert.AreEqual(dstInstanceLevel0, DstEntityManager.GetComponentData <HierarchyComponent>(dstRootInstance).Child);
                    Assert.AreEqual(dstRootInstance, DstEntityManager.GetComponentData <HierarchyComponent>(dstInstanceLevel0).Parent);
                    Assert.AreEqual(dstInstanceLevel1, DstEntityManager.GetComponentData <HierarchyComponent>(dstInstanceLevel0).Child);
                    Assert.AreEqual(dstInstanceLevel0, DstEntityManager.GetComponentData <HierarchyComponent>(dstInstanceLevel1).Parent);
                }

                // Remove level 1 entity from the prefab
                SrcEntityManager.GetBuffer <LinkedEntityGroup>(srcPrefabRoot).RemoveAt(2);
                SrcEntityManager.DestroyEntity(srcLevel1Prefab);

                // Fix the hierarchy of level 0 to remove the link to level 1
                SrcEntityManager.SetComponentData(srcLevel0Prefab, new HierarchyComponent {
                    Parent = srcPrefabRoot, Child = Entity.Null
                });

                // Synchronize worlds, destination world should no longer have instances of level 1
                PushChanges(differ, DstEntityManager);

                for (var i = 0; i != dstInstanceRoots.Length; i++)
                {
                    var dstRootInstance = dstInstanceRoots[i];

                    var dstInstanceGroup = DstEntityManager.GetBuffer <LinkedEntityGroup>(dstRootInstance);
                    Assert.AreEqual(2, dstInstanceGroup.Length);
                    Assert.AreEqual(dstRootInstance, dstInstanceGroup[0].Value);
                    var dstInstanceLevel1 = dstInstanceGroup[1].Value;

                    Assert.AreEqual(dstInstanceLevel1, DstEntityManager.GetComponentData <HierarchyComponent>(dstRootInstance).Child);
                    Assert.AreEqual(dstRootInstance, DstEntityManager.GetComponentData <HierarchyComponent>(dstInstanceLevel1).Parent);
                    Assert.AreEqual(Entity.Null, DstEntityManager.GetComponentData <HierarchyComponent>(dstInstanceLevel1).Child);
                }

                // Add again level 1 as a Child of level 0
                srcLevel1Prefab = SrcEntityManager.CreateEntity(typeof(HierarchyComponent), typeof(Prefab));
                SrcEntityManager.AddComponentData(srcLevel1Prefab, prefabLevel1Guid);
                SrcEntityManager.GetBuffer <LinkedEntityGroup>(srcPrefabRoot).Add(srcLevel1Prefab);
                SrcEntityManager.SetComponentData(srcLevel0Prefab, new HierarchyComponent {
                    Parent = srcPrefabRoot, Child = srcLevel1Prefab
                });
                SrcEntityManager.SetComponentData(srcLevel1Prefab, new HierarchyComponent {
                    Parent = srcLevel0Prefab, Child = Entity.Null
                });

                PushChanges(differ, DstEntityManager);

                for (var i = 0; i != dstInstanceRoots.Length; i++)
                {
                    var dstRootInstance = dstInstanceRoots[i];

                    var dstInstanceGroup = DstEntityManager.GetBuffer <LinkedEntityGroup>(dstRootInstance);
                    Assert.AreEqual(3, dstInstanceGroup.Length);
                    Assert.AreEqual(dstRootInstance, dstInstanceGroup[0].Value);
                    var dstInstanceLevel0 = dstInstanceGroup[1].Value;
                    var dstInstanceLevel1 = dstInstanceGroup[2].Value;

                    Assert.AreEqual(dstInstanceLevel0, DstEntityManager.GetComponentData <HierarchyComponent>(dstRootInstance).Child);
                    Assert.AreEqual(dstRootInstance, DstEntityManager.GetComponentData <HierarchyComponent>(dstInstanceLevel0).Parent);
                    Assert.AreEqual(dstInstanceLevel1, DstEntityManager.GetComponentData <HierarchyComponent>(dstInstanceLevel0).Child);
                    Assert.AreEqual(dstInstanceLevel0, DstEntityManager.GetComponentData <HierarchyComponent>(dstInstanceLevel1).Parent);
                }
            }
        }