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;
}
// Aliens
public override void VisitAlienGrid(AliensGrid g)
{
// MissileGroup vs AliensGrid
Debug.WriteLine(" collide: {0} <-> {1}", g.GetName(), this.GetName());
// Missile vs AliensCol
ColPair.Collide((GameObject)g.GetFirstChild(), (GameObject)this.GetFirstChild());
}
public static AliensGrid GetGrid()
{
AliensGrid temp = _AlienGridMan._AlienGrid;
if (temp == null || temp.GetFirstChild() == null)
{
InitializeGrid();
}
return(_AlienGridMan._AlienGrid);
}
public GameObject Create(GameObject.Name name, AlienCategory.Type type, float posX = 0.0f, float posY = 0.0f)
{
GameObject pGameObj = null;
switch (type)
{
case AlienCategory.Type.Squid:
pGameObj = new Alien(GameSprite.Name.Sprite_Squid, name, posX, posY);
break;
case AlienCategory.Type.Crab:
pGameObj = new Alien(GameSprite.Name.Sprite_Crab, name, posX, posY);
break;
case AlienCategory.Type.Octopus:
pGameObj = new Alien(GameSprite.Name.Sprite_Octopus, name, posX, posY);
break;
case AlienCategory.Type.Grid:
pGameObj = new AliensGrid(name);
break;
case AlienCategory.Type.Column:
pGameObj = new AliensColumn(name);
break;
default:
// something is wrong
Debug.Assert(false);
break;
}
// add it to the gameObjectManager
Debug.Assert(pGameObj != null);
// GameObjectMan.Attach(pGameObj);
// Attached to Group
pGameObj.ActivateGameSprite(this.pSpriteBatch);
pGameObj.ActivateCollisionSprite(pBoxBatch);
return(pGameObj);
}
// 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;
}
}
public virtual void VisitAlienGrid(AliensGrid g)
{
// no differed to subcass
Debug.WriteLine("Visit by Aliens not implemented");
Debug.Assert(false);
}
public virtual void Visit(AliensGrid b)
{
}