/// <summary>
/// When the precondition for a chunk to be in this stage fails,
/// if the chunk is in this stage, send it back.
/// </summary>
/// <param name="chunkId"></param>
private void OnPreconditionFailure(Vector3Int chunkId)
{
if (queue.TryRemove(chunkId))
{
GoingBackwardsThisUpdate.Add(chunkId);
}
}
public override void Update()
{
base.Update();
//Get next stage's entry limit
int maxToMoveOn = pipeline.GetStage(StageID + 1).EntryLimit;
int movedOn = 0;
//Iterate over queue in order, until at most maxToMoveOn items have been moved on
foreach (var item in queue)
{
if (movedOn >= maxToMoveOn)
{
break;
}
if (pipeline.NextStageFreeForChunk(item, StageID))
{
//Just before the chunk would move on, re-check that the preconditions still hold
if (CheckAndResolvePreconditionsBeforeExit(item))
{
MovingOnThisUpdate.Add(item);
movedOn++;
}
}
else
{
//Otherwise, the chunk neither moves on nor terminates, it waits
continue;
}
}
//Remove items from the queue when they move on
foreach (var item in MovingOnThisUpdate)
{
queue.Remove(item);
}
//Remove items from the queue when they terminate
foreach (var item in terminatingThisUpdateHelper)
{
queue.Remove(item);
}
///Items in the going backwards list have already been removed from the queue,
///but we need to make sure they should really be going backwards, not just terminating
GoingBackwardsThisUpdate.RemoveWhere((id) => TerminateHereCondition(id));
//Clear the terminating helper list
terminatingThisUpdateHelper.Clear();
}
