}//end of Max method
private int Min(int max) {
int returnValue = int.MaxValue;
if(turnTimer.Elapsed.TotalMilliseconds >= maxTurnTime) {
timeExpired = true;
return returnValue;
}
currentDepth++;
Game.PLAYERS human = Delinquent.GetGame().GetHumanPlayer();
List<Move> moves = Delinquent.GetGame().MoveGenerator(Delinquent.GetGame().GetHumanPlayer());
if(human == Game.PLAYERS.P1) {
if(moves.Count == 0 || Delinquent.GetGame().PeekRemoval().GetPiece() == Game.PIECES.P1_KING) {
returnValue = 999999999;
}
}
else {
if(moves.Count == 0 || Delinquent.GetGame().PeekRemoval().GetPiece() == Game.PIECES.P2_KING) {
returnValue = 999999999;
}
}
if(returnValue != 999999999) {
if(currentDepth == maxDepth) {
returnValue = Eval(moves, false);
}
else {
foreach(Move move in moves) {
if(timeExpired) {
break;
}
Delinquent.GetGame().TryMove(move);
int moveScore = Max(returnValue);
if(moveScore < returnValue) {
returnValue = moveScore;
}
Delinquent.GetGame().UndoMove(move);
if(returnValue < max) {
break;
}
}
}
}
currentDepth--;
return returnValue;
}//end of Min method
}//end of GetSetupInput method
public int[] GetUserMove() {
int[] move;
bool validMoveReceived = false;
do {
Console.ForegroundColor = ConsoleColor.Black;
Console.WriteLine("Enter a move: ");
string moveString = Console.ReadLine();
move = map_move_string(moveString);
// Console.WriteLine($"Move=[{move[0]}],[{move[1]}],[{move[2]}],[{move[3]}]");
Game.PLAYERS human = Delinquent.GetGame().GetHumanPlayer();
// Console.WriteLine($"Human={human}");
validMoveReceived = Delinquent.GetGame().IsMoveLegal(move, human);
if(!validMoveReceived) {
Console.WriteLine("Entered move not legal. Please try again.");
}
}
while(!validMoveReceived);
return move;
}//end of GetUserMove method
}//end of Min method
private int Eval(List<Move> moves, bool forComputer) {
int returnValue = 0;
bool useTrans = false;
long transKey = Delinquent.GetGame().GetCurrentHash();
if(transTable.ContainsKey(transKey)) {
Transposition trans = transTable[transKey];
if(trans.Ply() <= currentDepth) {
returnValue = trans.Score();
useTrans = true;
}
}
if(!useTrans) {
Game.PLAYERS human = Delinquent.GetGame().GetHumanPlayer();
Game.PLAYERS computer = Delinquent.GetGame().GetComputerPlayer();
List<Move> computerMoves;
List<Move> humanMoves;
if(forComputer) {
computerMoves = moves;
humanMoves = Delinquent.GetGame().MoveGenerator(human);
}
else {
humanMoves = moves;
computerMoves = Delinquent.GetGame().MoveGenerator(computer);
}
//piece value + board advance + mobility + piece threat
if(human == Game.PLAYERS.P1) {
int p1Score = EvalP1Score(humanMoves);
int p2Score = EvalP2Score(computerMoves);
returnValue = p2Score - p1Score;
}
else {
int p1Score = EvalP1Score(computerMoves);
int p2Score = EvalP2Score(humanMoves);
returnValue = p1Score - p2Score;
}
transTable[transKey] = new Transposition(currentDepth, returnValue);
}
return returnValue;
}//end of Eval method
