void RemoveNegativeDiagonal(int x, int y, HashSet <GridBall> removeSet)
{
var list = new List <GridBall>();
BallData color = null;
while (IsCell(x, y))
{
var ball = _ballsGrid[x, y];
if (ball == null || ball.data != color)
{
if (list.Count >= 5)
{
removeSet.UnionWith(list);
}
list.Clear();
if (ball == null)
{
color = null;
}
else
{
color = ball.data;
list.Add(ball);
}
}
else
{
list.Add(ball);
}
if (y % 2 != 0)
{
y++;
}
else
{
x--;
y++;
}
}
if (list.Count >= 5)
{
removeSet.UnionWith(list);
}
}
bool RemoveLines()
{
var removeSet = new HashSet <GridBall>();
// horizontal lines
for (int y = 0; y < grid.rowsCount; y++)
{
int count = 0;
BallData color = null;
for (int x = 0; x < grid.colsCount; x++)
{
var ball = _ballsGrid[x, y];
if (ball == null || ball.data != color)
{
if (count >= 5)
{
for (int i = x - count; i < x; i++)
{
removeSet.Add(_ballsGrid[i, y]);
}
}
if (ball == null)
{
color = null;
count = 0;
}
else
{
color = ball.data;
count = 1;
}
}
else
{
count++;
}
}
if (count >= 5)
{
for (int i = grid.colsCount - count; i < grid.colsCount; i++)
{
removeSet.Add(_ballsGrid[i, y]);
}
}
}
// positive diagonal
for (int x = 0; x < grid.colsCount; x++)
{
RemovePositiveDiagonal(x, 0, removeSet);
}
for (int y = 2; y < grid.rowsCount; y += 2)
{
RemovePositiveDiagonal(0, y, removeSet);
}
// negative diagonal
for (int x = 0; x < grid.colsCount; x++)
{
RemoveNegativeDiagonal(x, 0, removeSet);
}
for (int y = 1; y < grid.rowsCount; y += 2)
{
RemoveNegativeDiagonal(grid.colsCount - 1, y, removeSet);
}
if (removeSet.Count == 0)
{
return(false);
}
int N = removeSet.Count;
_scoreCount += (N * N - 7 * N + 20);
UpdateScore();
foreach (var ball in removeSet)
{
var pos = ball.position;
_freeCells.Add(pos);
_ballsGrid[pos.x, pos.y] = null;
ball.Hide();
Destroy(ball.gameObject, 1f);
}
return(true);
}