HashSet <Chain> DetectVerticalMatches()
{
HashSet <Chain> chainsSet = new HashSet <Chain>();
for (int column = 0; column < COLUMNS_NUMBER; column++)
{
for (int row = 0; row < ROWS_NUMBER - 2;)
{
if (animals[column, row] != null)
{
AnimalType matchType = animals[column, row].animalType;
if (animals[column, row + 1] != null && animals[column, row + 1].animalType == matchType &&
animals[column, row + 2] != null && animals[column, row + 2].animalType == matchType)
{
Chain chain = new Chain();
chain.chainType = ChainType.Vertical;
do
{
chain.AddAnimal(animals[column, row]);
row += 1;
}while (row < ROWS_NUMBER && animals[column, row] != null && animals[column, row].animalType == matchType);
chainsSet.Add(chain);
continue;
}
}
row += 1;
}
}
return(chainsSet);
}
HashSet <Chain> DetectHorizontalMatches()
{
HashSet <Chain> chainsSet = new HashSet <Chain>();
for (int row = 0; row < ROWS_NUMBER; row++)
{
//因为基数是3，所以序列是0开始需要减2的范围
for (int column = 0; column < COLUMNS_NUMBER - 2;)
{
if (animals[column, row] != null)
{
AnimalType matchType = animals[column, row].animalType;
if (animals[column + 1, row] != null && animals[column + 1, row].animalType == matchType &&
animals[column + 2, row] != null && animals[column + 2, row].animalType == matchType)
{
Chain chain = new Chain();
chain.chainType = ChainType.Horizontal;
do
{
//把整个链结构保存，例如行是保存到最后一个不是相同类型的item为止
chain.AddAnimal(animals[column, row]);
column += 1;
}while (column < COLUMNS_NUMBER && animals[column, row] != null && animals[column, row].animalType == matchType);
chainsSet.Add(chain);
continue;
}
}
column += 1;
}
}
return(chainsSet);
}
