public static void InitializeGrid()
{
// get Alien Grid From ReservedChildren Group
AliensGrid Grid = (AliensGrid)GameObjectMan.Find(0, 0).GameObj;
//if Grid has Child in the object pool
DLinkedNode Col = Grid.Reservedchildren.GetHead();
if (Col != null)
{
ResetGrid(Grid);
// Update xs and ys of the whole grid
UpdateGridPos(60, 530 - 30 * Nums.Level);
// next line is necessary
PlayBatchMan.Find(BatchName.Box).Add(GetGrid().CollisionObj.Box);
}
else
{ // if Aliens Grid is not in the object pool. create new Grid Obj
for (int j = 1; j <= 11; j++)
{
Composite col = AlienObjectFactory.CreatComposite(j);
Grid.Add(col);
}
}
_AlienGridMan._AlienGrid = Grid;
}
// private methods ---------->>>for recycling Aliens
private static void ResetGrid(AliensGrid Grid)
{
DLinkedNode Col = Grid.Reservedchildren.GetHead();
while (Col != null)
{
DLinkedNode NextCol = Col.Next;
// Active Col
Grid.Add((AliensCol)Col);
// Active Leaf
DLinkedNode Leaf = ((AliensCol)Col).Reservedchildren.GetHead();
while (Leaf != null)
{
DLinkedNode NextLeaf = Leaf.Next;
((AliensCol)Col).Add((AlienLeaf)Leaf);
((AliensCol)Col).Reservedchildren.Remove((AlienLeaf)Leaf);
Leaf = NextLeaf;
}
Grid.Reservedchildren.Remove((AliensCol)Col);
Col = NextCol;
}
}