/// <summary>
/// Metoda otwierająca wybrane pole.
/// </summary>
/// <param name="x">Współrzędna pozioma otwieranego pola</param>
/// <param name="y">Współrzędna pionowa otwieranego pola</param>
public void OpenField(int x, int y)
{
if (!IsStarted)
{
Fill(x, y);
IsStarted = true;
}
if (!Fields[y][x].IsMarked)
{
Fields[y][x].IsOpened = true;
FieldOpened?.Invoke(x, y, Fields[y][x].Value);
if (Fields[y][x].IsABomb)
{
IsFinished = true;
GameFinished?.Invoke(false);
}
else
{
if (Fields[y][x].Value == 0)
{
OpenBlankAreas();
}
bool victory = true;
for (int yi = 1; yi <= Height; yi++)
{
for (int xi = 1; xi <= Width; xi++)
{
if (!Fields[yi][xi].IsOpened && !Fields[yi][xi].IsABomb)
{
victory = false;
break;
}
}
}
if (victory)
{
IsFinished = true;
GameFinished?.Invoke(true);
}
}
}
}
/// <summary>
/// Pomocnicza metoda odsłaniająca puste fragmenty planszy.
/// </summary>
private void OpenBlankAreas()
{
int zerosNow = 0;
int zerosBefore = 0;
do
{
zerosBefore = zerosNow;
zerosNow = 0;
for (int y = 1; y <= Height; y++)
{
for (int x = 1; x <= Width; x++)
{
if (Fields[y][x].IsOpened && Fields[y][x].Value == 0)
{
Fields[y - 1][x - 1].IsOpened = true;
FieldOpened?.Invoke(x - 1, y - 1, Fields[y - 1][x - 1].Value);
Fields[y - 1][x].IsOpened = true;
FieldOpened?.Invoke(x, y - 1, Fields[y - 1][x].Value);
Fields[y - 1][x + 1].IsOpened = true;
FieldOpened?.Invoke(x + 1, y - 1, Fields[y - 1][x + 1].Value);
Fields[y][x - 1].IsOpened = true;
FieldOpened?.Invoke(x - 1, y, Fields[y][x - 1].Value);
Fields[y][x + 1].IsOpened = true;
FieldOpened?.Invoke(x + 1, y, Fields[y][x + 1].Value);
Fields[y + 1][x - 1].IsOpened = true;
FieldOpened?.Invoke(x - 1, y + 1, Fields[y + 1][x - 1].Value);
Fields[y + 1][x].IsOpened = true;
FieldOpened?.Invoke(x, y + 1, Fields[y + 1][x].Value);
Fields[y + 1][x + 1].IsOpened = true;
FieldOpened?.Invoke(x + 1, y + 1, Fields[y + 1][x + 1].Value);
zerosNow++;
}
}
}
} while (zerosNow != zerosBefore);
}