public BlockData GetNextCombinableBlock(GamingLogic2048.EPushingDirection _direction) //獲得某個方位上的下一個可結合之格子，沒辦法的話就回傳null
{
BlockData nextCombinableBlock = null;
BlockData nextBlock = this.GetNeighbor(_direction);
if (nextBlock != null)
{
if (nextBlock.Conbinable)
{
nextCombinableBlock = nextBlock;
}
else
{
switch (nextBlock.m_eBlockType)
{
case EBlockType.Obstruct: //障礙格子什麼也不做，自然的讓函式回傳null
nextCombinableBlock = null;
break;
case EBlockType.None: //空洞格子會一路繼續找下去，直到找到底或著下個可判斷的格子為止
nextCombinableBlock = nextBlock.GetNextCombinableBlock(_direction);
break;
}
}
}
return(nextCombinableBlock);
}
private List <List <BlockData> > GetPushingList(EPushingDirection _ePushingDirection) //獲得正要進行 "壓縮" 的行線群，所以是list(行線)的list(群)
{
List <List <BlockData> > listPushing = new List <List <BlockData> >();
List <int> listPushingPoint = this.GetPushingPoint(_ePushingDirection);
EPushingDirection eCombineDir = GetOppositeDirection(_ePushingDirection);
foreach (int iStartPoint in listPushingPoint)
{
BlockData blockPick = m_listBoard[iStartPoint];
List <BlockData> pushingLine = new List <BlockData>
{
blockPick
};
while (blockPick.GetNextCombinableBlock(eCombineDir) != null)
{
blockPick = blockPick.GetNextCombinableBlock(eCombineDir);
pushingLine.Add(blockPick);
}
listPushing.Add(pushingLine);
}
return(listPushing);
}