/// <summary>
/// Check combination of current map
/// </summary>
/// <returns>
/// The combine.
/// </returns>
public bool CheckCombine()
{
List <Combine> combines = new List <Combine>();
//Check combinations by type
for (int itemType = 0; itemType < Enum.GetNames(typeof(ItemType)).Length; itemType++)
{
//Check all combination in horizontal direction
for (int row = 0; row < maxRow; row++)
{
List <Item> subCombines = new List <Item>();
for (int col = 0; col < maxCol; col++)
{
//Get current square
Square square = GetSquare(row, col);
if (!square.CanMoveItemOut())
{
if (subCombines.Count >= 3)
{
Combine combine = new Combine();
combine.AddItems(subCombines);
combines.Add(combine);
}
subCombines.Clear();
continue;
}
//If current square is same type with current-checking item type
//add it to subCombines
if (square.item.type == (ItemType)itemType)
{
subCombines.Add(square.item);
}
//Until current square is out of map or current square's item type not
//same with checking type, if subCombines is > 3 elements,
//add subcombines to list combines
if (square.item.type != (ItemType)itemType || col == maxCol - 1)
{
if (subCombines.Count >= 3)
{
Combine combine = new Combine();
combine.AddItems(subCombines);
combines.Add(combine);
}
subCombines.Clear();
}
}
}
//Check all combination in horizontal direction, same with check all horizontal
for (int col = 0; col < maxCol; col++)
{
List <Item> subCombines = new List <Item>();
for (int row = 0; row < maxRow; row++)
{
Square square = GetSquare(row, col);
if (!square.CanMoveItemOut())
{
if (subCombines.Count >= 3)
{
Combine combine = new Combine();
combine.AddItems(subCombines);
combines.Add(combine);
}
subCombines.Clear();
continue;
}
if (square.item.type == (ItemType)itemType)
{
subCombines.Add(square.item);
}
if (square.item.type != (ItemType)itemType || row == maxRow - 1)
{
if (subCombines.Count >= 3)
{
Combine combine = new Combine();
combine.AddItems(subCombines);
combines.Add(combine);
}
subCombines.Clear();
}
}
}
}
//If can found combinations, disappear hint effect, count explosion,
//and remove all combinations' item
if (combines.Count > 0)
{
GamePlay.Instance.explosionCount++;
GamePlay.Instance.UnHint();
StartCoroutine(RemoveCombines(combines));
return(true);
}
else
{
//Reset selected item
GamePlay.Instance.selectedItem = null;
GamePlay.Instance.CheckWin();
}
return(false);
}