private Collapse GenerateNewItems(IEnumerable <int> columns)
{
var collapse = new Collapse();
//find how many null values the column has
foreach (int column in columns)
{
var emptyCells = board.GetEmptyCellsOnColumn(column);
foreach (var cell in emptyCells)
{
var prefab = GetRandomItemPrefab();
var item = ((GameObject)Instantiate(prefab.gameObject, spawnPoints[column], Quaternion.identity)).GetComponent <Item>();
item.transform.SetParent(board.transform);
cell.SetItem(item);
if (board.rows - cell.Row > collapse.MaxDistance)
{
collapse.MaxDistance = board.rows - cell.Row;
}
collapse.AddCell(cell);
}
}
return(collapse);
}
public Collapse CollapseColumns(IEnumerable <int> columnArray)
{
Collapse collapse = new Collapse();
//search in every column
foreach (var column in columnArray)
{
//begin from bottom row
for (int row = 0; row < rows - 1; row++)
{
//if you find a null item
if (cells[row, column].IsEmpty)
{
//start searching for the first non-null
for (int row2 = row + 1; row2 < rows; row2++)
{
//if you find one, bring it down (i.e. replace it with the null you found)
if (!cells[row2, column].IsEmpty)
{
Cell cell1 = cells[row, column];
Cell cell2 = cells[row2, column];
//assign the item
cell1.SetItem(cell2.Item);
cell2.Clear();
//calculate the biggest distance
collapse.MaxDistance = Mathf.Max(row2 - row, collapse.MaxDistance);
collapse.AddCell(cell1);
break;
}
}
}
}
}
return(collapse);
}