private static string WhiteTurn(string board)
{
var engine = new WhiteCheckersEngine(board);
var positions = engine.GetPossiblePositions();
var rnd = new Random();
return(positions.Count > 0 ? positions[rnd.Next(0, positions.Count - 1)].Last() : null);
}
private int WhiteMax(string board, int currentDepth, int alpha)
{
var engine = new WhiteCheckersEngine(board);
var positions = engine.GetPossiblePositions();
if (positions == null || positions.Count == 0)
{
return(0);
}
var maxPos = int.MinValue;
foreach (var position in positions)
{
var posWeight = 0;
for (var i = 0; i < position[position.Count - 1].Length; i++)
{
if (position[position.Count - 1][i] == 'b')
{
posWeight -= BlackWeights[i];
}
if (position[position.Count - 1][i] == 'B')
{
posWeight -= KingWeights[i];
}
if (position[position.Count - 1][i] == 'w')
{
posWeight += WhiteWeights[i];
}
if (position[position.Count - 1][i] == 'W')
{
posWeight += KingWeights[i];
}
}
if (currentDepth < Depth)
{
posWeight -= BlackMax(position[position.Count - 1], currentDepth + 1, maxPos);
}
if (posWeight > maxPos)
{
maxPos = posWeight;
}
if (maxPos >= alpha)
{
return(maxPos);
}
}
return(maxPos);
}