public void IsImmediateWinSuccessForPlayerX()
{
int score = MoveScoreConverter.ConvertWin(Occupied.PlayerX, 0);
bool result = MoveScoreConverter.IsImmediateWin(Occupied.PlayerX, score);
Assert.IsTrue(result);
}
public void WinForPlayerYIsNotWinForPlayerX()
{
int score = MoveScoreConverter.ConvertWin(Occupied.PlayerY, 0);
bool result = MoveScoreConverter.IsImmediateWin(Occupied.PlayerX, score);
Assert.IsFalse(result);
}
public void DescribeYWinner()
{
int score = MoveScoreConverter.ConvertWin(Occupied.PlayerY, 2);
string description = MoveScoreConverter.DescribeScore(score);
Assert.AreEqual("Win by Y in 2 moves", description);
}
/// <summary>
/// public wrapper for recursion
/// try each possible move, find the one with the best score
/// </summary>
/// <param name="lookahead">how far to look ahead</param>
/// <param name="playerX">is this for player x</param>
/// <returns>The data on the best move location and score</returns>
public MinimaxResult DoMinimax(int lookahead, bool playerX)
{
// set up inital state
DateTime startTime = DateTime.Now;
if (lookahead < 1)
{
throw new Exception("Invalid lookahead of " + lookahead);
}
this.debugDataItems.Clear();
Occupied player = playerX.ToPlayer();
int alpha = MoveScoreConverter.ConvertWin(player.Opponent(), 0);
int beta = MoveScoreConverter.ConvertWin(player, 0);
MinimaxResult bestMove = this.ScoreBoard(lookahead, this.ActualBoard, playerX, alpha, beta);
if (bestMove.Move != Location.Null)
{
GoodMoves.AddGoodMove(0, bestMove.Move);
}
DateTime endTime = DateTime.Now;
this.MoveTime = endTime - startTime;
return(bestMove);
}
public void WinIsBetterForPlayerY()
{
int winScoreX = MoveScoreConverter.ConvertWin(Occupied.PlayerX, 2);
int winScoreY = MoveScoreConverter.ConvertWin(Occupied.PlayerY, 2);
Assert.IsTrue(MoveScoreConverter.IsBetterFor(winScoreY, winScoreX, false));
Assert.IsFalse(MoveScoreConverter.IsBetterFor(winScoreY, winScoreX, true));
}
public void NearWinForPlayerYIsLessNegative()
{
int playerYWin = MoveScoreConverter.ConvertWin(Occupied.PlayerY, 1);
int playerYFarWin = MoveScoreConverter.ConvertWin(Occupied.PlayerY, 2);
Assert.Less(playerYWin, playerYFarWin);
Assert.Less(playerYFarWin, 0);
Assert.Less(playerYWin, 0);
}
public void NearWinForPlayerXIsGreater()
{
int playerXWin = MoveScoreConverter.ConvertWin(Occupied.PlayerX, 1);
int playerXFarWin = MoveScoreConverter.ConvertWin(Occupied.PlayerX, 2);
Assert.Greater(playerXWin, playerXFarWin);
Assert.Greater(playerXFarWin, 0);
Assert.Greater(playerXWin, 0);
}
public void WinForPlayerXIsGreaterThanWinForPlayerY()
{
int playerXWin = MoveScoreConverter.ConvertWin(Occupied.PlayerX, 0);
int playerYWin = MoveScoreConverter.ConvertWin(Occupied.PlayerY, 0);
Assert.Greater(playerXWin, playerYWin);
Assert.Greater(playerXWin, 0);
Assert.Less(playerYWin, 0);
}
public void LaterWinForPLayerXIsNotImmediateWin()
{
int score = MoveScoreConverter.ConvertWin(Occupied.PlayerX, 1);
bool resultForX = MoveScoreConverter.IsImmediateWin(Occupied.PlayerX, score);
bool resultForY = MoveScoreConverter.IsImmediateWin(Occupied.PlayerY, score);
Assert.IsFalse(resultForX, "X");
Assert.IsFalse(resultForY, "Y");
}
public MinimaxResult DoMinimax(int depth, bool isComputer)
{
// megmondja, hogy ki a jatekos, ha a gep, akkor az isComputerben true van, es akkor a plyaerben xPlayer lesz.
Occupied player = isComputer.ToPlayer();
// a gep az alpha
this.alpha = MoveScoreConverter.ConvertWin(player.Opponent(), 0);
// ember a beta
this.beta = MoveScoreConverter.ConvertWin(player, 0);
// a minimax algoritmus magaban
MinimaxResult bestMove = this.MiniMaxAlg(depth, isComputer, board);
if (bestMove.Move != Location.Null)
{
// killer heurisztika
GoodMoves.AddGoodMove(0, bestMove.Move);
}
return(bestMove);
}
public int SituationScore()
{
int playerXScore = this.PlayerScore(true);
if (playerXScore == 0)
{
// player x wins
return(MoveScoreConverter.ConvertWin(Occupied.PlayerX, 0));
}
if (playerXScore == PathLengthConstants.OffPath)
{
// player X loses -> player y wins
return(MoveScoreConverter.ConvertWin(Occupied.PlayerY, 0));
}
// no win yet. score for the situation
int playerYScore = this.PlayerScore(false);
return(playerYScore - playerXScore);
}
public void WinnerYIsWinner()
{
int score = MoveScoreConverter.ConvertWin(Occupied.PlayerY, 1);
Assert.AreEqual(Occupied.PlayerY, MoveScoreConverter.Winner(score));
}
