public override Bits[] Apply(Bits[] position, Game g)
{
var result = new Bits[position.Length];
Array.Copy (position, result, position.Length);
// Remove the piece from initial position
var pI = g.PieceIndex (c, movedIndex);
result[pI] ^= square;
// Put it on new position, possibly promoting
if (promo) {
var pPI = g.PromotedIndex (c, movedIndex);
result [pPI] ^= move;
}
else
result [g.PieceIndex (c, movedIndex)] ^= move;
// If a piece is captured update hand and enemy piece
if (capturedIndex >= 0) {
// Get the correct indices
var pEI = g.PieceIndex (c^1, capturedIndex);
var hI = g.HandIndex (c);
// Update the bitboards
result [pEI] ^= (move);
var mask = g.handMask[g.demote[capturedIndex]];
B.PushMasked(ref result[hI], mask);
}
return result;
}
public override Bits[] Apply(Bits[] position, Game g)
{
//Create a new set of bits
var result = new Bits[position.Length];
Array.Copy (position, result, position.Length);
// Drop the piece in question by setting the location bit
result [g.PieceIndex (c, dropIndex)] |= location;
// Remove the piece from the player's hand
Bits mask = g.handMask[dropIndex];
var handIndex = g.HandIndex (c);
result[handIndex] = result[handIndex];
B.PopMasked(ref result[handIndex], mask);
return result;
}
