int evaluator::eval_dark_king(int sq)
{
int r;
int i;
r = king_pcsq[flip[sq]];
if (COL(sq) < 3) {
r += eval_dkp(1);
r += eval_dkp(2);
r += eval_dkp(3) / 2;
}
else if (COL(sq) > 4) {
r += eval_dkp(8);
r += eval_dkp(7);
r += eval_dkp(6) / 2;
}
else {
for (i = COL(sq); i <= COL(sq) + 2; ++i)
if ((pawn_rank[LIGHT][i] == 0) &&
(pawn_rank[DARK][i] == 7))
r -= 10;
}
r *= piece_mat[LIGHT];
r /= 3100;
return r;
}
int eval_black_king(int sq)
{
int r;
int i;
// Evaluates safety of king if castled
r = king_pcsq[flip[sq]];
if (COL(sq) < 3) {
r += eval_dkp(1);
r += eval_dkp(2);
r += eval_dkp(3) / 2;
}
else if (COL(sq) > 4) {
r += eval_dkp(8);
r += eval_dkp(7);
r += eval_dkp(6) / 2;
}
// Penalty added if open files around king
else {
for (i = COL(sq); i <= COL(sq) + 2; ++i)
if ((pawn_rank[WHITE][i] == 0) &&
(pawn_rank[BLACK][i] == 7))
r -= 10;
}
// Scale score based on number of opposing pieces
r *= piece_mat[WHITE];
r /= 3100;
return r;
}