// Initializing field units with bombs and other data such as nearby bombs
private void InitializeField(int indexOfFirstFieldUnit)
{
this.rnd = new Random();
int fieldUnitNumber = (int)Math.Pow(this.fieldWidth, 2);
List <int> listOfBombs = new List <int>(this.fieldWidth);
// First opened field unit can't have the bomb
listOfBombs.Add(indexOfFirstFieldUnit);
int rng;
for (int k = 0; k < this.bombNumber; k++)
{
rng = rnd.Next(0, fieldUnitNumber - 1);
if (listOfBombs.Contains(rng))
{
k--;
continue;
}
else
{
listOfBombs.Add(rng);
listOfUnits[rng].Bomb = true;
listOfUnits[rng].NearbyBombs = -1;
listOfUnits[rng].IsOpened = false;
int row = Grid.GetRow(listOfUnits[rng]);
int col = Grid.GetColumn(listOfUnits[rng]);
// updating 'nearby bombs' value to units around bomb-initialized unit
for (int i = -1; i < 2; i++)
{
for (int j = -1; j < 2; j++)
{
int r = row + i;
int c = col + j;
if (r < 0 || r > fieldWidth - 1 || c < 0 || c > fieldWidth - 1)
{
continue;
}
FieldUnit unit = FieldUnit.GetUnit(listOfUnits, r, c);
if (unit.Bomb || (i == 0 && j == 0))
{
continue;
}
unit.NearbyBombs++;
}
}
}
}
}
// Recursive function that opens field units
private void OpenField(FieldUnit fu)
{
fu.IsOpened = true;
int row = Grid.GetRow(fu);
int column = Grid.GetColumn(fu);
TextBlock tb = new TextBlock
{
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Center
};
if (fu.Bomb)
{
GameOver(fu);
return;
}
else
{
tb.Text = fu.NearbyBombs.ToString();
}
SetTbStyle(tb);
Field.Children.Remove(fu);
Border border = new Border
{
BorderThickness = new Thickness(1),
BorderBrush = new SolidColorBrush(Colors.LightGray),
Child = tb
};
Grid.SetRow(border, row);
Grid.SetColumn(border, column);
Field.Children.Add(border);
// Opening adjacent field units if field is empty
if (fu.NearbyBombs == 0)
{
for (int i = -1; i < 2; i++)
{
for (int j = -1; j < 2; j++)
{
int r = row + i;
int c = column + j;
if (r < 0 || r > fieldWidth - 1 || c < 0 || c > fieldWidth - 1 ||
(i == 0 && j == 0))
{
continue;
}
FieldUnit unit = FieldUnit.GetUnit(listOfUnits, r, c);
// If it's already open or if it's marked with flag, continue
if (unit.IsOpened || unit.Flag)
{
continue;
}
else
{
OpenField(unit);
}
}
}
}
else
{
return;
}
}
