/// <summary>
///
/// </summary>
/// <param name="startModel"></param>
/// <param name="endModel"></param>
/// <returns></returns>
public static bool MoveModel(CellViewModel startModel, CellViewModel endModel)
{
// No Chesspiece to move or one of the ViewModel's is empty
if (startModel == null || endModel == null || startModel.CurrentChessPiece == null)
{
return(false);
}
// Same color
if (endModel.CurrentChessPiece != null &&
(startModel.CurrentChessPiece.IsWhite() == endModel.CurrentChessPiece.IsWhite()))
{
return(false);
}
// No Path to the destination / endModel
if (!endModel.CanMoveHere.Any(o => Equals(o.StartCell, startModel)) &&
!endModel.CanEatHere.Any(o => Equals(o.StartCell, startModel)))
{
return(false);
}
// Startmodel has a ChessPece
// Startmodel and Endmodel aren't the same color
// Startmodel was able to find a path to the Endmodel
// Start and Endmodel are not the same
endModel.MoveToGraveyard();
endModel.CurrentChessPiece = startModel.CurrentChessPiece;
endModel.CurrentChessPiece.DidMove = true;
startModel.CurrentChessPiece = null;
return(true);
}
public object Clone()
{
var newCellViewModel = new CellViewModel(CurrentChessPiece, Board);
newCellViewModel.CanEatHere.AddRange(CanEatHere.Select(path => path.ClonePath()));
newCellViewModel.CanMoveHere.AddRange(CanEatHere.Select(path => path.ClonePath()));
newCellViewModel.Bgc = Bgc;
newCellViewModel.Name = Name;
newCellViewModel.CurrentChessPiece = CurrentChessPiece?.CloneChessPiece();
return(newCellViewModel);
}
/// <summary>
///
/// </summary>
/// <param name="startModel"></param>
/// <param name="endModel"></param>
/// <returns></returns>
public static bool MoveModel(CellViewModel startModel, CellViewModel endModel)
{
// No Chesspiece to move or one of the ViewModel's is empty
if (startModel == null || endModel == null || startModel.CurrentChessPiece == null)
{
return false;
}
// Same color
if (endModel.CurrentChessPiece != null &&
(startModel.CurrentChessPiece.IsWhite() == endModel.CurrentChessPiece.IsWhite()))
{
return false;
}
// No Path to the destination / endModel
if (!endModel.CanMoveHere.Any(o => Equals(o.StartCell, startModel)) &&
!endModel.CanEatHere.Any(o => Equals(o.StartCell, startModel)))
{
return false;
}
// Startmodel has a ChessPece
// Startmodel and Endmodel aren't the same color
// Startmodel was able to find a path to the Endmodel
// Start and Endmodel are not the same
endModel.MoveToGraveyard();
endModel.CurrentChessPiece = startModel.CurrentChessPiece;
endModel.CurrentChessPiece.DidMove = true;
startModel.CurrentChessPiece = null;
return true;
}
private async Task CreateEmptyChessBoard()
{
for (var number = 1; number <= 8; number++)
{
for (int character = 'A'; character <= 'H'; character++)
{
var propertyName = (char) character + number.ToString();
var property = new CellViewModel(null, this)
{
Name = propertyName
};
AllCells.Add(property);
}
}
await CreateLink();
}
public object Clone()
{
var newCellViewModel = new CellViewModel(CurrentChessPiece, Board);
newCellViewModel.CanEatHere.AddRange(CanEatHere.Select(path => path.ClonePath()));
newCellViewModel.CanMoveHere.AddRange(CanEatHere.Select(path => path.ClonePath()));
newCellViewModel.Bgc = Bgc;
newCellViewModel.Name = Name;
newCellViewModel.CurrentChessPiece = CurrentChessPiece?.CloneChessPiece();
return newCellViewModel;
}
private async Task SelectCellViewModel(CellViewModel cellThatGotClicked)
{
// NextTurn, when the ViewModel moved to the newly selected ViewModel
if (CellViewModel.MoveModel(SelectedCellViewModel, cellThatGotClicked))
{
AddToHistory(SelectedCellViewModel, cellThatGotClicked);
// Reset CheckedKingColor
ResetColors(true);
await NextTurn();
SelectedCellViewModel = null;
}
// Select ViewModel, if it's the players turn
else if (cellThatGotClicked?.CurrentChessPiece != null && WhiteTurn == cellThatGotClicked.CurrentChessPiece.IsWhite())
{
SelectedCellViewModel = cellThatGotClicked;
SelectedCellViewModel.StartColorize();
MarkCheck();
}
else
{
SelectedCellViewModel = null;
}
}
/// <summary>
/// Add a new Element to the History
/// </summary>
/// <param name="startModel">The StartCell, which was selected first</param>
/// <param name="endModel">The EndCell, which was moved / eaten to</param>
private void AddToHistory(CellViewModel startModel, CellViewModel endModel)
{
if (startModel == null || endModel == null)
{
return;
}
var historyViewModel = new HistoryViewModel
{
FromCell = startModel,
ToCell = endModel
};
History.Add(historyViewModel);
}
/// <summary>
/// Add a new Element to the GraveYard
/// </summary>
/// <param name="cellViewModel">The Cell that will be added to the GraveYard</param>
public void AddToGraveYard(CellViewModel cellViewModel)
{
if (cellViewModel?.CurrentChessPiece == null)
{
return;
}
GraveYard.Add(cellViewModel.CurrentChessPiece);
}
/// <summary>
/// Validates a step
/// </summary>
/// <param name="from"></param>
/// <param name="to"></param>
/// <returns>True, when the step doesn't put the own king into checkmate</returns>
public async Task<bool> ValidateMovement(CellViewModel from, CellViewModel to)
{
var tmpBoard = await CloneBoard();
var tmpFrom = tmpBoard.AllCells.FirstOrDefault(cell => cell.Equals(from));
var tmpTo = tmpBoard.AllCells.FirstOrDefault(cell => cell.Equals(to));
await tmpBoard.CalculatePossibleSteps(true);
CellViewModel.MoveModel(tmpFrom, tmpTo);
foreach (var cell in tmpBoard.AllCells)
{
cell.CanEatHere.Clear();
cell.CanMoveHere.Clear();
}
await tmpBoard.CalculatePossibleSteps(true);
return !tmpBoard.CalculateKingUnderAttack();
}
/// <summary>
/// Method that gets called when a player clicks on a CellViewModel.
/// </summary>
/// <param name="mouseButtonState">Only checks wheter the Left or Right mousebutton is the ChangedButton</param>
/// <param name="cellThatGotClicked">CellViewModel, that got clicked. Either selects or moves a Cell</param>
public async Task CellViewModelOnMouseDown(MouseButtonEventArgs mouseButtonState, CellViewModel cellThatGotClicked)
{
ResetColors();
switch (mouseButtonState.ChangedButton)
{
case MouseButton.Left:
await SelectCellViewModel(cellThatGotClicked);
break;
case MouseButton.Right:
// Mark CellViewModel's which can move here, just colorisation
foreach (var canMoveHere in cellThatGotClicked.CanMoveHere)
{
canMoveHere.StartCell.Bgc = CellViewModel.CanMoveHereColor;
}
foreach (var canEathere in cellThatGotClicked.CanEatHere)
{
canEathere.StartCell.Bgc = CellViewModel.CanEatHereColor;
}
break;
case MouseButton.Middle:
break;
case MouseButton.XButton1:
break;
case MouseButton.XButton2:
break;
default:
throw new ArgumentOutOfRangeException();
}
}
