private List <float> GetHardWeights(AIBoard board)
{
float p1spWeight = 1f;
float p2spWeight = 1f;
//Variables used in weight calculations.
int playerOneSP = BoardAnalysis.FindShortestPath(board, true);
int playerTwoSP = BoardAnalysis.FindShortestPath(board, true);
int playerTwoNumWalls = CurrentBoard.GetPlayerTwoNumWalls();
int distanceBetweenPlayers = BoardAnalysis.FindDistanceBetween(CurrentBoard, CurrentBoard.GetPlayerOnePos(), CurrentBoard.GetPlayerTwoPos());
if (playerOneSP - playerTwoSP > 2)
{
p1spWeight = 5;
}
else if (playerOneSP < 5)
{
p1spWeight = 2;
}
List <float> w = new List <float> {
p1spWeight, p2spWeight
};
return(w);
}
public WallDiffNode(AIBoard copy)
{
Board = new AIBoard(copy);
Depth = 0;
MoveMade = "rootnode";
Diff = BoardAnalysis.FindShortestPath(Board, true) - BoardAnalysis.FindShortestPath(Board, false);
}
//Static evaluation function of the gameboard.
private void EvaluateNode()
{
value = 0;
//If a player won, assigns node proper value and then returns.
if (EvaluateWinPossibility(ref value))
{
}
//Calculates factors of interest and calculates the value.
else
{
int P1SP = BoardAnalysis.FindShortestPath(Board, true);
int P2SP = BoardAnalysis.FindShortestPath(Board, false);
int P1NumWalls = Board.GetPlayerOneNumWalls();
int P2NumWalls = Board.GetPlayerTwoNumWalls();
for (int i = 0; i < P2NumWalls; ++i)
{
value += wallValues[i];
}
value += (weights[0] * P1SP - weights[1] * P2SP);
}
}
//If it is positive P2SP's path got that much shorter.
public int CalcChangeInDiff()
{
Diff = BoardAnalysis.FindShortestPath(Board, true) - BoardAnalysis.FindShortestPath(Board, false);
return(PreviousDiff - Diff);
}