public TurnInfo Drop(int column)
{
if (field[column].Count == height) return TurnInfo.Invalid;
NextCell.SetXy(column, field[column].Count);
field[column].Add(NextCell);
var score = 0;
List<Group> groups;
while ((groups = RebuildGroups().Where(g => rules.CanTerminate(g)).ToList()).Count > 0)
{
score += rules.GetGroupsScore(groups);
foreach (var group in groups)
{
TerminateGroup(group);
}
var selector = rules.AdditionalCellsSelector(groups);
TerminateCells(field.SelectMany(c => c).Where(c => selector(c)));
}
if (field.All(col => col.Count == height)) return TurnInfo.GameOwer;
NextCell = CreateNewCell();
return new TurnInfo(score);
}
private void OnTerminated(Cell cell)
{
cell.Terminated -= OnTerminated;
cell.Shifted -= OnShifted;
cell.Updated -= OnUpdated;
game.RemoveCell(this);
}
private void UpdateConnections(Cell newCell)
{
var top = Cells.FirstOrDefault(c => c.X == newCell.X && c.Y == newCell.Y + 1);
if (top != null)
{
newCell.ConnectionType |= CellConnectionType.Top;
top.ConnectionType |= CellConnectionType.Bottom;
}
var bottom = Cells.FirstOrDefault(c => c.X == newCell.X && c.Y == newCell.Y - 1);
if (bottom != null)
{
bottom.ConnectionType |= CellConnectionType.Top;
newCell.ConnectionType |= CellConnectionType.Bottom;
}
var left = Cells.FirstOrDefault(c => c.Y == newCell.Y && c.X == newCell.X - 1);
if (left != null)
{
left.ConnectionType |= CellConnectionType.Right;
newCell.ConnectionType |= CellConnectionType.Left;
}
var right = Cells.FirstOrDefault(c => c.Y == newCell.Y && c.X == newCell.X + 1);
if (right != null)
{
newCell.ConnectionType |= CellConnectionType.Right;
right.ConnectionType |= CellConnectionType.Left;
}
}
public void AddCell(Cell cell)
{
if (cell.Color != Color)
throw new InvalidOperationException("Different cells and groups color");
UpdateConnections(cell);
Cells.Add(cell);
cell.Group = this;
}
public CellViewModel(Cell cell, GameViewModel game)
{
model = cell;
this.game = game;
model.Terminated += OnTerminated;
model.Shifted += OnShifted;
model.Updated += OnUpdated;
Fill = model.Color.FillColor;
Row = cell.Row;
Column = cell.X;
}
private void OnUpdated(Cell cell)
{
ConnectionType = cell.ConnectionType;
Fill = model.Group.StarsCount > 0 ? model.Color.FillColor : model.Color.GroupColor;
}
private IEnumerable<Cell> GetFilteredCells(Cell cell)
{
return GetNearestCells(cell.X, cell.Y).Where(c => c.Group == null && c.Color == cell.Color);
}
public Group(Cell cell)
{
Cells = new List<Cell> { cell };
Color = cell.Color;
cell.Group = this;
}
