// Collapses the remaining glyphs in the specified columns, after the matched glyphs removal
public AlteredGlyphInfo Collapse(IEnumerable<int> columns)
{
AlteredGlyphInfo collapseInfo = new AlteredGlyphInfo();
// Search in every column
foreach (var column in columns)
{
// Begin from bottom row
for (int row = 0; row < Constants.Rows - 1; row++)
{
// If you find a null item
if (shapes[row, column] == null)
{
// Start searching for the first non-null
for (int row2 = row + 1; row2 < Constants.Rows; row2++)
{
// If one is found, bring it down (replace it with the found null)
if (shapes[row2, column] != null)
{
shapes[row, column] = shapes[row2, column];
shapes[row2, column] = null;
// Calculate the biggest distance
if (row2 - row > collapseInfo.MaxDistance)
{
collapseInfo.MaxDistance = row2 - row;
}
// Assign new row and column (name does not change)
shapes[row, column].GetComponent<Shape>().Row = row;
shapes[row, column].GetComponent<Shape>().Column = column;
collapseInfo.AddGlyph(shapes[row, column]);
break;
}
}
}
}
}
return collapseInfo;
}
// Takes the columns that have been missing glyphs as a parameter
private AlteredGlyphInfo CreateNewGlyphsInSpecificColumns(IEnumerable<int> columnsWithMissingGlyphs)
{
AlteredGlyphInfo newGlyphInfo = new AlteredGlyphInfo();
// Find how many null values the column has
foreach (int column in columnsWithMissingGlyphs)
{
var emptyItems = shapes.GetEmptyItemsOnColumn(column);
foreach (var item in emptyItems)
{
var go = GetRandomGlyph();
GameObject newGlyph = Instantiate(go, SpawnPositions[column], Quaternion.identity)
as GameObject;
newGlyph.GetComponent<Shape>().Assign(go.GetComponent<Shape>().Type, item.Row, item.Column);
if (Constants.Rows - item.Row > newGlyphInfo.MaxDistance)
{
newGlyphInfo.MaxDistance = Constants.Rows - item.Row;
}
shapes[item.Row, item.Column] = newGlyph;
newGlyphInfo.AddGlyph(newGlyph);
}
}
return newGlyphInfo;
}