//Inserts a commit between float and locked without moving it from float to locked first
private bool _InsertOnLocked(InventoryCommit commit)
{
commit.Data.PickedupWithInventory(this, commit.Index);
//Revert back to the head
LinkedListNode<InventoryCommit> node;
for (node = m_commits.Last;
node != null && node != m_head;
node = node.Previous)
{
node.Value.Revert(this);
}
//Apply the new commit onto the head.
if (commit.Apply(this))
{
LinkedListNode<InventoryCommit> newHead;
if (m_head != null)
newHead = m_commits.AddAfter(m_head, commit);
else
newHead = m_commits.AddFirst(commit);
if (commit.Lock(this, newHead))
{
m_head = newHead;
}
else
{
m_commits.Remove(newHead);
}
}
else
{
commit.Revert(this);
return false;
}
//Push floating commits back onto inventory.
for (node = _GetFloatingTale(); node != null;)
{
InventoryCommit floatingCommit = node.Value;
if (!floatingCommit.Apply(this))
{
LinkedListNode<InventoryCommit> removingNode = node;
node = node.Next;
m_commits.Remove(removingNode);
}
else
{
node = node.Next;
}
}
return true;
}
private bool _CommitOnFloating(InventoryCommit commit)
{
if (commit.Apply(this))
return false;
m_commits.AddLast(commit);
return true;
}