public static MagicContainer[] GenerateBishopAttacks(ulong[] keys = null)
{
var masks = new ulong[64];
var permutations = new ulong[64][];
var attacks = new ulong[64][];
for (var fieldIndex = 0; fieldIndex < 64; fieldIndex++)
{
masks[fieldIndex] = DiagonalPatternGenerator.GetPattern(fieldIndex) & ~BoardConstants.Edges;
permutations[fieldIndex] = new ulong[1 << MagicShifts.BishopShifts[fieldIndex]];
attacks[fieldIndex] = new ulong[1 << MagicShifts.BishopShifts[fieldIndex]];
for (var permutationIndex = 0; permutationIndex < permutations[fieldIndex].Length; permutationIndex++)
{
permutations[fieldIndex][permutationIndex] = PermutationsGenerator.GetPermutation(masks[fieldIndex], permutationIndex);
attacks[fieldIndex][permutationIndex] = AttacksGenerator.GetDiagonalAttacks(permutations[fieldIndex][permutationIndex], fieldIndex);
}
}
return(_bishopMagicArray = GenerateAttacks(masks, permutations, attacks, MagicShifts.BishopShifts, keys));
}
public static MagicContainer[] GenerateRookAttacks(ulong[] keys = null)
{
var masks = new ulong[64];
var permutations = new ulong[64][];
var attacks = new ulong[64][];
for (var fieldIndex = 0; fieldIndex < 64; fieldIndex++)
{
masks[fieldIndex] = (FilePatternGenerator.GetPatternForField(fieldIndex) & ~BoardConstants.TopBottomEdge) |
(RankPatternGenerator.GetPatternForField(fieldIndex) & ~BoardConstants.RightLeftEdge);
permutations[fieldIndex] = new ulong[1 << MagicShifts.RookShifts[fieldIndex]];
attacks[fieldIndex] = new ulong[1 << MagicShifts.RookShifts[fieldIndex]];
for (var permutationIndex = 0; permutationIndex < permutations[fieldIndex].Length; permutationIndex++)
{
permutations[fieldIndex][permutationIndex] = PermutationsGenerator.GetPermutation(masks[fieldIndex], permutationIndex);
attacks[fieldIndex][permutationIndex] = AttacksGenerator.GetFileRankAttacks(permutations[fieldIndex][permutationIndex], fieldIndex);
}
}
return(_rookMagicArray = GenerateAttacks(masks, permutations, attacks, MagicShifts.RookShifts, keys));
}