protected void FillReserveListIfEmpty(int n)
{
if (pReserve == null)
{
pReserve = this.derivedCreateNode();
DLink head = pReserve;
for (int x = 0; x < n - 1; x++)
{
pReserve.pNext = this.derivedCreateNode();
pReserve.pNext.pPrev = pReserve;
pReserve = pReserve.pNext;
}
pReserve = head;
nNumReserved = n;
}
}
public static DLink AddToFront(ref DLink pHead, DLink pNode)
{
if (pHead == null)
{
pHead = pNode;
pNode.pNext = null;
pNode.pPrev = null;
}
else
{
pNode.pPrev = null;
pNode.pNext = pHead;
pHead.pPrev = pNode;
pHead = pNode;
}
return(pNode);
}
public DLink baseRemove(DLink node)
{
if (node == null)
{
return(null);
}
if (pActive is null)
{
return(null);
}
DLink.RemoveNode(ref pActive, node);
this.derivedWash(node);
--mNumActive;
++nNumReserved;
return(node);
}
public static void RemoveNode(ref DLink pHead, DLink pNode)
{
if (pNode.pPrev != null)
{
pNode.pPrev.pNext = pNode.pNext;
}
else
{
pHead = pNode.pNext;
}
if (pNode.pNext != null)
{
pNode.pNext.pPrev = pNode.pPrev;
}
pNode.Clear();
}
public DLink AddToFront()
{
FillReserveListIfEmpty(nGrowthSize);
if (pReserve != null)
{
pReserve.pPrev = null;
}
DLink node = pReserve;
this.derivedWash(node);
pReserve = pReserve.pNext;
node.pNext = null;
node.pPrev = null;
node = DLink.AddToFront(ref pActive, node);
pActive = node;
++mNumActive;
--nNumReserved;
return(node);
}
public DLink AddBefore(ref DLink node)
{
if (node == null || baseFind(node) == null)
{
return(null);
}
FillReserveListIfEmpty(nGrowthSize);
if (pReserve != null)
{
pReserve.pPrev = null;
}
DLink nNode = pReserve;
pReserve = pReserve.pNext;
DLink head = pActive;
if (node == pActive)
{
return(AddToFront());
}
else
{
node.pPrev.pNext = nNode;
nNode.pPrev = node.pPrev;
node.pPrev = nNode;
nNode.pNext = node;
++mNumActive;
--nNumReserved;
}
pActive = head;
return(nNode);
}
protected override void derivedWash(DLink node)
{
Image image = (Image)node;
image.Wash();
}
public void Clear()
{
this.pNext = null;
this.pPrev = null;
}
protected override void derivedWash(DLink node)
{
SpriteNode pNode = (SpriteNode)node;
pNode.Wash();
}
abstract protected void derivedWash(DLink node);
abstract protected bool derivedCompare(DLink nodeA, DLink nodeB);