public static float ScoreBoard(Board PreviousBoard, Board Board)
{
var previousPlayer = (byte)~Board.Header.WhoseTurnNext;
var r = 0.0f;
// Taking tiles is good.
r += 50000 * (Board.CountOfHeldTiles(previousPlayer) - PreviousBoard.CountOfHeldTiles(previousPlayer));
// Taking pieces is also good.
r += 50000 * (PreviousBoard.CountOfPieces(Board.Header.WhoseTurnNext) - Board.CountOfPieces(Board.Header.WhoseTurnNext));
var tierPieceCount = new int[2, ControlTiers.Length];
// Encourage board development.
for (int i = 0; i < ControlTiers.Length; ++i)
{
tierPieceCount[0, i] = 0;
tierPieceCount[1, i] = 0;
foreach (var triangle in ControlTiers[i])
{
if (triangle.Triangle % 2 != previousPlayer)
{
tierPieceCount[0, i] += PreviousBoard.GetTriangle(triangle);
tierPieceCount[1, i] += Board.GetTriangle(triangle);
}
}
}
for (int i = 0; i < ControlTiers.Length - 1; ++i)
{
var tierDifference = tierPieceCount[1, i] - tierPieceCount[0, i];
r += TierValue[i] * tierDifference;
}
return r;
}
