private static bool canMoveTo(Position position, string color)
{
List <Piece> pieces;
if (color == "white")
{
pieces = Chess.whitePieces();
}
else
{
pieces = Chess.blackPieces();
}
Chess.checkingOwn = true;
foreach (Piece p in pieces)
{
if (Rules.validMove(p, position))
{
Chess.checkingOwn = false;
return(true);
}
}
Chess.checkingOwn = false;
return(false);
}
private static int lowestThreathener(Position position, string color)
{
List <Piece> pieces;
if (color == "white")
{
pieces = Chess.whitePieces();
}
else
{
pieces = Chess.blackPieces();
}
int value = 123456789;
Chess.checkingOwn = true;
foreach (Piece p in pieces)
{
if (Rules.validMove(p, position))
{
if (p.getValue() < value)
{
value = p.getValue();
}
}
}
Chess.checkingOwn = false;
return(value);
}
public static ChessMove nextDraw()
{
ChessMove finalMove = new ChessMove(new Position(0, 0), new Position(0, 0));
Random rnd = new Random();
double best = -10000;
List <Piece> blackPieces = Chess.blackPieces();
foreach (Piece piece in blackPieces)
{
Piece p = blackPieces.Find(x => x.Equals(piece));
Dictionary <Position, bool?> moves = Chess.validMoves(p);
foreach (KeyValuePair <Position, bool?> move in moves)
{
double value = 0;
if (move.Value != false)
{
value = Chess.board.at(move.Key).getValue() + rnd.NextDouble() * 4;
if (isThreatened(p.getPosition()))
{
value += p.getValue();
if (isProtected(p.getPosition()))
{
int low = lowestThreathener(p.getPosition(), "white");
int val = p.getValue();
value -= low < val ? low : val;
}
}
int previousValue = p.getValue();
Chess.tempMove(p.getPosition(), move.Key);
value += p.getValue() - previousValue;
if (isThreatened(p.getPosition()))
{
value -= p.getValue();
if (isProtected(p.getPosition()))
{
int low = lowestThreathener(p.getPosition(), "white");
int val = p.getValue();
value += low < val ? low : val;
}
}
if (Chess.IsChecked("white"))
{
value += rnd.NextDouble() * 5;
}
Chess.undo();
}
else if (move.Value == false)
{
value = -10000;
}
if (value > best)
{
best = value;
finalMove = new ChessMove(piece.getPosition(), move.Key);
}
}
}
return(finalMove);
}
