static bool RequestPending = false;
-////
-//// Functions
-////
/// Constructors
+CheckInfo::CheckInfo(const Position& pos) {
+
+ Color us = pos.side_to_move();
+ Color them = opposite_color(us);
+
+ ksq = pos.king_square(them);
+ dc = pos.discovered_check_candidates(us);
+
+ checkSq[PAWN] = pos.attacks_from<PAWN>(ksq, them);
+ checkSq[KNIGHT] = pos.attacks_from<KNIGHT>(ksq);
+ checkSq[BISHOP] = pos.attacks_from<BISHOP>(ksq);
+ checkSq[ROOK] = pos.attacks_from<ROOK>(ksq);
+ checkSq[QUEEN] = checkSq[BISHOP] | checkSq[ROOK];
+ checkSq[KING] = EmptyBoardBB;
+}
+
Position::Position(const Position& pos) {
copy(pos);
}
//// Types
////
+/// struct checkInfo is initialized at c'tor time and keeps
+/// info used to detect if a move gives check.
+
+struct CheckInfo {
+
+ CheckInfo(const Position&);
+
+ Square ksq;
+ Bitboard dc;
+ Bitboard checkSq[8];
+};
+
/// Castle rights, encoded as bit fields
enum CastleRights {