Fix warnings

src/chess.cpp

@@ -175,18 +175,18 @@ int main(){
 			}
 			if (moving_piece == W_ROOK){
 				if (moving_from_pos == Position::A1 &&
-						(castle_perms & CastlePerms::WQS == 1)){
+						((castle_perms & CastlePerms::WQS) == CastlePerms::WQS)){
 					castle_perms -= CastlePerms::WQS;
 				} else if (moving_from_pos == Position::H1 &&
-						(castle_perms & CastlePerms::WKS == 1)){
+						((castle_perms & CastlePerms::WKS) == CastlePerms::WKS)){
 					castle_perms -= CastlePerms::WKS;
 				}
 			} else if (moving_piece == B_ROOK){
 				if (moving_from_pos == Position::H8 &&
-						(castle_perms & CastlePerms::BKS == 1)){
+						((castle_perms & CastlePerms::BKS) == CastlePerms::BKS)){
 					castle_perms -= CastlePerms::BKS;
 				} else if (moving_from_pos == Position::A8 &&
-						(castle_perms & CastlePerms::BQS == 1)){
+						((castle_perms & CastlePerms::BQS) == CastlePerms::BQS)){
 					castle_perms -= CastlePerms::BQS;
 				}	
 			}

src/functions.cpp

@@ -136,7 +136,6 @@ void add_checked_flags(PieceType pt, std::array<PieceType, 120> *board, std::vec
 void filter_checked_moves(PieceType pt, std::array<PieceType, 120> *board, std::vector<int> *pns){
 	PieceType my_king = is_white(pt)?PieceType::W_KING:PieceType::B_KING;
 	int my_king_pos = get_pos_of(my_king, board);
-	int attackers = 0;
 	bool remove_all_castles = false;
 	for (auto p_pn= pns->begin(); p_pn!=pns->end();){
 		if (get_castle_flag(*p_pn) == 1){
@@ -148,6 +147,8 @@ void filter_checked_moves(PieceType pt, std::array<PieceType, 120> *board, std::
 				++p_pn;
 				break;
 			}
+			// TODO: Make this more effecient.
+			// There is no way in hell, this is as complicated as it seems.
 			// If moved left
 			// Queenside
 			if ((get_from_sq(*p_pn) - get_to_sq(*p_pn)) > 0){