/// <summary>
/// Try to remove an element from the queue.
/// </summary>
/// <param name="result">
/// If there's a element available, this parameter will be updated to
/// that element.
/// </param>
/// <returns>Whether the dequeueing operation succeeded.</returns>
public bool TryDequeue(out T *result)
{
result = null;
AtomicNode *root = AcquireRoot();
var first = (AtomicNode *)root->Next;
var dequeued = (first != null);
if (dequeued)
{
result = (T *)first->Payload;
root->Next = first->Next;
// if the first node was also the last node, we need to mark the last pointer as well
if (root->Payload == (long)first)
{
root->Payload = 0;
}
}
ReleaseRoot(root);
if (dequeued)
{
FreeList.Release(first);
}
return(dequeued);
}
void ClearIncrementalConversion(GameObject gameObject)
{
int index;
if (!m_GameObjectToEntity.TryGetValue(gameObject.GetInstanceID(), out index))
{
throw new ArgumentException($"GameObject {gameObject} has changed but is not known to the incremental conversion.");
}
var e = m_Entities.Data[index];
if (m_DstManager.HasComponent <Prefab>(e))
{
throw new ArgumentException("An Entity with a Prefab tag cannot be updated during incremental conversion");
}
m_DstManager.SetArchetype(e, GetCleanIncrementalArchetype(e));
var additionalIndex = m_Entities.Next[index];
while (additionalIndex != -1)
{
e = m_Entities.Data[additionalIndex];
if (m_DstManager.HasComponent <LinkedEntityGroup>(e))
{
throw new ArgumentException("An Entity with a LinkedEntityGroup cannot be destroyed during incremental conversion");
}
if (m_DstManager.HasComponent <Prefab>(e))
{
throw new ArgumentException("An Entity with a Prefab tag cannot be updated during incremental conversion");
}
m_DstManager.DestroyEntity(e);
int releaseIndex = additionalIndex;
additionalIndex = m_Entities.Next[additionalIndex];
m_Entities.Release(releaseIndex);
}
m_Entities.Next[index] = -1;
}
