private void ResetDragAndDrop()
{
if (_selectedPiece == null)
{
return;
}
Canvas.Children.Remove(_selectedPiece);
_clickedSquare.PieceView = _selectedPiece;
_selectedPiece = null;
_hasBeginDragAndDrop = false;
}
protected override void OnMouseDown(MouseButtonEventArgs e)
{
base.OnMouseDown(e);
if (e.ChangedButton != MouseButton.Left)
{
return;
}
_mouseDown = true;
_mouseDownPoint = e.GetPosition(Grid);
_clickedSquare = SquareAt(e.GetPosition(Grid));
if (_clickedSquare == null)
{
return;
}
if (_selected && _possibleMoves.Contains(_clickedSquare))
{
return;
}
ResetBoardColor();
_selectedPiece = _clickedSquare.PieceView;
//--Verified--//
//Concerned controllers to get the possible moves
var concernedControllers =
BoardViewPlayerControllers.FindAll(
x => x.Player.Color == _selectedPiece?.Piece.Color && x.IsPlayable);
if (concernedControllers.Count == 0)
{
return;
}
_initDragAndDropOnMouseMove = true;
//Possible move drawing
foreach (var square in concernedControllers.First().PossibleMoves(_selectedPiece.Piece))
{
var squareView =
Grid.Children.Cast <SquareView>()
.First(x => Grid.GetRow(x) == square.Y && Grid.GetColumn(x) == square.X);
squareView.SetResourceReference(BackgroundProperty,
(square.X + square.Y) % 2 == 0
? "MahApps.Brushes.Button.CleanWindow.Close.Background.MouseOver"
: "MahApps.Brushes.Button.CleanWindow.Close.Background.Pressed");
_possibleMoves.Add(squareView);
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
var p = e.GetPosition(Grid);
if (p.X < 0 || p.Y < 0 || p.X > Grid.ActualWidth || p.Y > Grid.ActualHeight)
{
if (_selectedPiece == null)
{
return;
}
Canvas.Children.Remove(_selectedPiece);
_clickedSquare.Square.Piece = _selectedPiece.Piece;
_selectedPiece = null;
_selected = false;
return;
}
//Use the threshold too
if (!_mouseDown)
{
return;
}
if (_selectedPiece == null)
{
return;
}
if (_initDragAndDropOnMouseMove && (_mouseDownPoint - e.GetPosition(Grid)).Length > 5)
{
Console.WriteLine("Init drag and drop");
_clickedSquare.PieceView = null;
var width = _selectedPiece.ActualWidth;
var height = _selectedPiece.ActualHeight;
//Put the pieceView in the canvas to be able to drag&drop
Canvas.Children.Add(_selectedPiece);
_selectedPiece.Height = height;
_selectedPiece.Width = width;
_initDragAndDropOnMouseMove = false;
_hasBeginDragAndDrop = true;
}
Canvas.SetTop(_selectedPiece, e.GetPosition(this).Y - _selectedPiece.ActualHeight / 2);
Canvas.SetLeft(_selectedPiece, e.GetPosition(this).X - _selectedPiece.ActualWidth / 2);
}
public SquareView(Square square)
{
InitializeComponent();
Square = square;
DataContext = this;
Square.PropertyChanged += SquarePropertyChangeHandler;
if (square.Piece != null)
{
PieceView = new PieceView(square.Piece);
}
SetResourceReference(BackgroundProperty,
(square.X + square.Y) % 2 == 0 ? "MahApps.Brushes.Accent" : "MahApps.Brushes.Accent4");
Grid.SetColumn(this, square.X);
Grid.SetRow(this, square.Y);
}
protected override void OnMouseUp(MouseButtonEventArgs e)
{
base.OnMouseUp(e);
if (e.ChangedButton != MouseButton.Left)
{
return;
}
_mouseDown = false;
_initDragAndDropOnMouseMove = false;
var concernedControllers = ConcernedControllers();
if (concernedControllers.Count == 0)
{
return;
}
Move move;
var squareView = SquareAt(e.GetPosition(Grid));
//TODO Put all the fields in the corresponding state
if (squareView == null)
{
if (_selectedPiece == null)
{
return;
}
Canvas.Children.Remove(_selectedPiece);
_clickedSquare.Square.Piece = _selectedPiece.Piece;
_selectedPiece = null;
_selected = false;
return;
}
var clickedSquareView = SquareAt(_mouseDownPoint);
var select = Equals(squareView.Square.Coordinate, clickedSquareView?.Square?.Coordinate); //Same square
if (select)
{
if (_hasBeginDragAndDrop)
{
Canvas.Children.Remove(_selectedPiece);
_clickedSquare.PieceView = _selectedPiece;
_selectedPiece = null;
_hasBeginDragAndDrop = false;
ResetBoardColor();
return;
}
//First click
if (!_selected)
{
Console.WriteLine("Selection");
_selected = true;
}
//Second click
else
{
if (!_possibleMoves.Contains(_clickedSquare))
{
return;
}
_selected = false;
ResetBoardColor();
if (_selectedPiece.Piece.Type == Type.Pawn &&
squareView.Square.Y == (_selectedPiece.Piece.Color == Color.White ? 0 : 7))
{
var promoteDialog = new PieceTypeSelectionWindow(_selectedPiece.Piece.Color);
promoteDialog.ShowDialog();
move = new Move(_selectedPiece.Piece.Square, squareView.Square, _selectedPiece.Piece.Type,
_selectedPiece.Piece.Color, promoteDialog.ChosenType);
}
else
{
move = new Move(_selectedPiece.Piece, squareView.Square);
}
concernedControllers.ForEach(x => x.Move(move));
}
}
else //Drag case
{
if (!_possibleMoves.Contains(squareView))
{
ResetDragAndDrop();
ResetBoardColor();
return;
}
Canvas.Children.Remove(_selectedPiece);
ResetBoardColor();
if (_selectedPiece.Piece.Type == Type.Pawn &&
squareView.Square.Y == (_selectedPiece.Piece.Color == Color.White ? 0 : 7))
{
var promoteDialog = new PieceTypeSelectionWindow(_selectedPiece.Piece.Color);
promoteDialog.ShowDialog();
move = new Move(_selectedPiece.Piece.Square, squareView.Square, _selectedPiece.Piece.Type,
_selectedPiece.Piece.Color, promoteDialog.ChosenType);
}
else
{
move = new Move(_selectedPiece.Piece, squareView.Square);
}
concernedControllers.ForEach(x => x.Move(move));
_selected = false;
_hasBeginDragAndDrop = false;
}
}
