public void ComputeDiffOnly()
{
EntityGuid[] guids = new EntityGuid[4];
Entity[] ents = new Entity[4];
// create 4 entities
for (int i = 0; i < 4; ++i)
{
guids[i] = GenerateEntityGuid(i + 1);
ents[i] = m_Manager.CreateEntity(typeof(EntityGuid), typeof(EcsTestData));
m_Manager.SetComponentData(ents[i], guids[i]);
m_Manager.SetComponentData(ents[i], new EcsTestData {
value = i
});
}
WorldDiff diff = default;
// Calculate initial diff
diff = WorldDiffer.CreateDiff(m_After, m_Shadow, Allocator.TempJob);
Assert.AreEqual(diff.NewEntityCount, 4);
diff.Dispose();
// These shouldn't exist in the shadow world
foreach (var guid in guids)
{
Assert.AreEqual(Entity.Null, GetEntityByGuid(m_Shadow.EntityManager, guid));
}
// Calculate same diff again; results should be the same as above
diff = WorldDiffer.CreateDiff(m_After, m_Shadow, Allocator.TempJob);
Assert.AreEqual(diff.NewEntityCount, 4);
// These still shouldn't exist in the shadow world
foreach (var guid in guids)
{
Assert.AreEqual(Entity.Null, GetEntityByGuid(m_Shadow.EntityManager, guid));
}
// Now apply the diff to the dst world
WorldDiffer.ApplyDiff(m_DstWorld, diff);
diff.Dispose();
// and now they should exist in the dst world
for (int i = 0; i < 4; ++i)
{
Assert.AreEqual(ents[i], GetEntityByGuid(m_DstManager, guids[i]));
}
}
public void Dispose()
{
m_WorldDiff.Dispose();
m_InverseWorldDiff.Dispose();
}