public override List <Position> GetAvailableOnCheckPositons(Position currentPos, CoreMatrix matrix)
{
List <Position> availlablePos = GetAvailableAtackPositons(currentPos, matrix);
List <Position> validPos = new List <Position> ();
CoreMatrix tmpMatrix;
tmpMatrix = (CoreMatrix)matrix.Clone();
foreach (Position pos in availlablePos)
{
Position kingPos = tmpMatrix.GetKing(color);
if (kingPos.Equals(pos))
{
int dx = currentPos.X - pos.X;
dx = (dx > 0) ? (1) : (-1);
Position newKingPos = new Position(pos.X + dx * 2, pos.Y);
Position rockPos = new Position(pos.X + dx, pos.Y);
tmpMatrix.MoveFigure(kingPos, newKingPos);
tmpMatrix.MoveFigure(currentPos, rockPos);
if (!King.IsCheckState(tmpMatrix, color))
{
validPos.Add(pos);
}
tmpMatrix.MoveFigure(newKingPos, kingPos);
tmpMatrix.MoveFigure(rockPos, currentPos);
}
else
{
tmpMatrix.MoveFigure(currentPos, pos);
if (!King.IsCheckState(tmpMatrix, color))
{
validPos.Add(pos);
}
tmpMatrix.MoveFigure(pos, currentPos);
}
}
return(validPos);
}
//get all available positions for current figure in shah mode
public virtual List <Position> GetAvailableOnCheckPositons(Position currentPos, CoreMatrix matrix)
{
List <Position> availlablePos = GetAvailableAtackPositons(currentPos, matrix);
List <Position> validPos = new List <Position>();
CoreMatrix tmpMatrix;
foreach (Position pos in availlablePos)
{
tmpMatrix = (CoreMatrix)matrix.Clone();
Position kingPos = tmpMatrix.GetKing(color);
tmpMatrix.MoveFigure(currentPos, pos);
if (!King.IsCheckState(tmpMatrix, color))
{
validPos.Add(pos);
}
}
return(validPos);
}
public override List <Position> GetAvailableAtackPositons(Position currentPos, CoreMatrix matrix)
{
List <Position> available = new List <Position> ();
//by X
for (int i = currentPos.X + 1; i < 8; i++)
{
if (matrix.FigureAt(i, currentPos.Y) == null)
{
available.Add(new Position(i, currentPos.Y));
}
else if (matrix.FigureAt(i, currentPos.Y).Color != this.Color)
{
available.Add(new Position(i, currentPos.Y));
break;
}
else if (matrix.FigureAt(i, currentPos.Y) is King && !IsMoved && !matrix.FigureAt(i, currentPos.Y).IsMoved)
{
CoreMatrix tmpMatrix;
bool can = true;
for (int x = currentPos.X + 1; x <= i; x++)
{
tmpMatrix = (CoreMatrix)matrix.Clone();
Position kingPos = tmpMatrix.GetKing(color);
tmpMatrix.MoveFigure(kingPos, new Position(x, currentPos.Y));
if (King.IsCheckState(tmpMatrix, color))
{
can = false;
break;
}
}
//figure is not by atack
if (can)
{
available.Add(new Position(i, currentPos.Y));
}
break;
}
else
{
break;
}
}
//by X
for (int i = currentPos.X - 1; i >= 0; i--)
{
if (matrix.FigureAt(i, currentPos.Y) == null)
{
available.Add(new Position(i, currentPos.Y));
}
else if (matrix.FigureAt(i, currentPos.Y).Color != this.Color)
{
available.Add(new Position(i, currentPos.Y));
break;
}
else if (matrix.FigureAt(i, currentPos.Y) is King && !IsMoved && !matrix.FigureAt(i, currentPos.Y).IsMoved)
{
CoreMatrix tmpMatrix;
bool can = true;
for (int x = currentPos.X - 1; x <= i; x--)
{
tmpMatrix = (CoreMatrix)matrix.Clone();
Position kingPos = tmpMatrix.GetKing(color);
tmpMatrix.MoveFigure(kingPos, new Position(x, currentPos.Y));
if (King.IsCheckState(tmpMatrix, color))
{
can = false;
break;
}
}
//figure is not by atack
if (can)
{
available.Add(new Position(i, currentPos.Y));
}
break;
}
else
{
break;
}
}
//by Y
for (int j = currentPos.Y + 1; j < 8; j++)
{
if (!matrix.HasFigureAt(new Position(currentPos.X, j)))
{
available.Add(new Position(currentPos.X, j));
}
else if (matrix.FigureAt(currentPos.X, j).Color != this.Color ||
(matrix.FigureAt(currentPos.X, j) is King && !IsMoved && !matrix.FigureAt(currentPos.X, j).IsMoved))
{
available.Add(new Position(currentPos.X, j));
break;
}
else
{
break;
}
}
//by Y
for (int j = currentPos.Y - 1; j >= 0; j--)
{
if (matrix.FigureAt(currentPos.X, j) == null)
{
available.Add(new Position(currentPos.X, j));
}
else if (matrix.FigureAt(currentPos.X, j).Color != this.Color ||
(matrix.FigureAt(currentPos.X, j) is King && !IsMoved && !matrix.FigureAt(currentPos.X, j).IsMoved))
{
available.Add(new Position(currentPos.X, j));
break;
}
else
{
break;
}
}
return(available);
}