private void InitKingAttacks()
{
var kingAttacks = new SquareFlag[64];
for (var squareIndex = 0; squareIndex < 64; ++squareIndex)
{
kingAttacks[squareIndex] = AttackGenerator.GeneratePotentialKingAttacks(squareIndex);
}
KingAttacks = kingAttacks;
}
private void InitPaths()
{
var paths = new SquareFlag[64][];
for (var squareIndex = 0; squareIndex < 64; ++squareIndex)
{
paths[squareIndex] = AttackGenerator.GeneratePaths(squareIndex);
}
Paths = paths;
}
private void InitPawnCaptures()
{
var pawnCapturesWhite = new SquareFlag[64];
var pawnCapturesBlack = new SquareFlag[64];
// You could potentially use a smaller range EXCEPT that Kings use this from ranks 1 and 8
for (var squareIndex = 0; squareIndex < 64; ++squareIndex)
{
pawnCapturesWhite[squareIndex] = AttackGenerator.GeneratePotentialWhitePawnCaptures(squareIndex);
pawnCapturesBlack[squareIndex] = AttackGenerator.GeneratePotentialBlackPawnCaptures(squareIndex);
}
PawnCapturesWhite = pawnCapturesWhite;
PawnCapturesBlack = pawnCapturesBlack;
}
private void AddBishopAttack(SortedDictionary <int, SquareFlag> dictionary, int squareIndex, SquareFlag currentOccupancy)
{
var magicIndex = MagicIndexHelpers.GetBishopMagicIndex(squareIndex, currentOccupancy);
var attack = AttackGenerator.GeneratePotentialBishopAttacks(squareIndex, currentOccupancy);
var indexTaken = dictionary.ContainsKey(magicIndex) && dictionary[magicIndex] != attack;
if (indexTaken)
{
throw new Exception($"Magic Index {magicIndex} already in use by a different attack");
}
dictionary[magicIndex] = attack;
}