public ListMap GetCopyOf()
{
var newMap = new ListMap(Size);
newMap.InjectFrom <CloneInjection>(this);
newMap.Board.ForEach(x => x.PostCloneWork());
return(newMap);
}
public int ScoreFromBoard(ListMap map, ListPlayer player)
{
var opponent = player.Me == PlayerType.Blue ? PlayerType.Red : PlayerType.Blue;
// player score
var playerScore = PlayerScore(map, player.Me);
// opponent score
var opponentScore = PlayerScore(map, opponent);
return(playerScore - opponentScore);
}
private int PlayerScore(ListMap map, PlayerType player)
{
var scout = new Pathfinder(map, player);
var path = scout.GetPathForPlayer();
var isFullyAttached = path.Where(x => x.Owner == player).Any(x => x.IsAttachedToBothEnds());
if (isFullyAttached)
{
Console.WriteLine((string)("Winning move found! " + player));
return(player == PlayerType.Blue ? 5000 : -5000);
}
return(PlayerScore(path));
}
public Pathfinder(ListMap searchThis,
PlayerType searchForThisPlayer,
int friendlyCost = 0,
int openCost = 20,
int costPerNodeTillEnd = 10,
bool isLogging = false)
{
_searchSpace = searchThis;
_playerSearchingFor = searchForThisPlayer;
IsLogging = isLogging;
costPerFriendlyNode = friendlyCost;
costPerNodeLeft = costPerNodeTillEnd;
costPerOpenNode = openCost;
}
private int PlayerScore_Bad(ListMap map, PlayerType player, Matrix <double> playerMatrix)
{
if (player == PlayerType.Blue)
{
var pathVector = playerMatrix.RowSums();
var numberLeft = Enumerable.AsEnumerable <double>(pathVector).Count(x => (int)x == 0);
return(map.Size - numberLeft);
}
else
{
var pathVector = playerMatrix.ColumnSums();
var numberLeft = Enumerable.AsEnumerable <double>(pathVector).Count(x => (int)x == 0);
return(map.Size - numberLeft);
}
}
public void StartInquisition(ListMap searchMap, ListPlayer searchPlayer)
{
var mapToSearch = searchMap.GetCopyOf();
var searchScout = new Pathfinder(mapToSearch,
searchPlayer.Me,
searchPlayer.CostToMoveToClaimedNode,
searchPlayer.CostToMoveToUnclaimedNode,
searchPlayer.CostPerNodeTillEnd);
_finalChoice = null;
_finalScore = -9999;
ThinkAboutTheNextMove(
searchPlayer,
mapToSearch,
searchScout.GetPathForPlayer(),
null,
searchPlayer.CurrentLevels,
-9999,
9999,
true);
}
public void SetMap(ListMap map)
{
_searchSpace = map;
}
private void Startup()
{
Memory = new ListMap(Size);
CurrentChoice = null;
}
private int ThinkAboutTheNextMove(
ListPlayer player,
ListMap map,
List <ListHex> path,
ListHex currentMove,
int depth,
int alpha,
int beta,
bool isMaximizing)
{
var judge = new Appraiser();
var scout = new Pathfinder(map, isMaximizing ? player.Me : player.Opponent());
var myPath = scout.GetPathForPlayer();
if (depth == 0 || map.Board.All(x => x.Owner != PlayerType.White))
{
return(judge.ScoreFromBoard(player, myPath, path));
}
var possibleMoves = GetPossibleMoves(path, myPath, isMaximizing ? player.Me : player.Opponent(), map);
if (isMaximizing)
{
foreach (var move in possibleMoves)
{
var bestScore = -9999;
var newMap = map.GetCopyOf();
newMap.TakeHex(player.Me, move.Row, move.Column);
bestScore = Math.Max(bestScore,
ThinkAboutTheNextMove(
player,
newMap,
myPath,
move,
depth - 1,
alpha,
beta,
false));
if (bestScore > alpha)
{
_finalChoice = move.ToTuple();
alpha = bestScore;
}
if (beta <= alpha)
{
break;
}
}
return(alpha);
}
else
{
foreach (var move in possibleMoves)
{
var worstScore = 9999;
var newMap = map.GetCopyOf();
newMap.TakeHex(player.Opponent(), move.Row, move.Column);
worstScore = Math.Min(worstScore, ThinkAboutTheNextMove(
player,
newMap,
myPath,
move,
depth - 1,
alpha,
beta,
true));
beta = Math.Min(worstScore, beta);
if (beta <= alpha)
{
break;
}
}
return(beta);
}
}
public IEnumerable <ListHex> GetPossibleMoves(List <ListHex> path, List <ListHex> myPath, PlayerType player, ListMap map)
{
var opponent = player == PlayerType.Blue ? PlayerType.Red : PlayerType.Blue;
var lastOpponentMove = opponent == PlayerType.Blue ? map.LastBlueMove : map.LastRedMove;
var possibleMoves = new HashSet <ListHex>();
if (lastOpponentMove != null)
{
foreach (var move in lastOpponentMove.Neighbours)
{
var hex = map.HexAt(move.ToTuple());
if (hex != null && hex.Owner == PlayerType.White)
{
hex.Priority += 3;
possibleMoves.Add(hex);
}
}
}
foreach (var move in path)
{
var hex = map.HexAt(move.ToTuple());
if (hex != null && hex.Owner == PlayerType.White)
{
hex.Priority += 2;
possibleMoves.Add(hex);
}
}
foreach (var move in myPath)
{
var hex = map.HexAt(move.ToTuple());
if (hex != null && hex.Owner == PlayerType.White)
{
hex.Priority++;
possibleMoves.Add(hex);
}
}
//foreach (var move in map.Board)
//{
// if (move.Owner == PlayerType.White)
// {
// possibleMoves.Add(move);
// }
//}
var possibleMovesList = possibleMoves
.OrderByDescending(x => x.Priority)
.ThenBy(x => x.DistanceTo(lastOpponentMove))
.ThenBy(x => x.RandomValue).Where(x => x.Owner == PlayerType.White).ToList();
//Console.Write("Possible moves: ");
//possibleMovesList.ForEach(x => Console.Write(x + " "));
//Console.WriteLine("");
return(possibleMovesList);
}
