stellar

0 #ifndef STELLAR_MOVES_H

1 #define STELLAR_MOVES_H

2

3 #include "board.hpp"

4 #include "piece.hpp"

5 #include "utils.hpp"

6

7 #include <iostream>

8 #include <vector>

9

10 struct Move {

11 enum Flag : uint8_t {

12 QUIET,

13 DOUBLE,

14 CASTLEK,

15 CASTLEQ,

16 CAPTURE,

17 ENPASSANT,

18 PQUIET,

19 PKNIGHT = 8,

20 PBISHOP,

21 PROOK,

22 PQUEEN,

23 PCKNIGHT,

24 PCBISHOP,

25 PCROOK,

26 PCQUEEN,

27 };

28

29 Move() : source_i(0), target_i(0), flags_i(0) {}

30 Move(Square source, Square target, Flag flags) : source_i(source), target_i(target), flags_i(flags) {}

31

32 friend bool operator==(const Move a, const Move b) {

33 return a.source_i == b.source_i && a.target_i == b.target_i && a.flags_i == b.flags_i;

34 }

35

36 [[nodiscard]] constexpr Square source() const { return static_cast<Square>(source_i); }

37 [[nodiscard]] constexpr Square target() const { return static_cast<Square>(target_i); }

38

39 [[nodiscard]] constexpr bool is_capture() const { return flags_i != PQUIET && (flags_i & CAPTURE); }

40 [[nodiscard]] constexpr bool is_promote() const { return flags_i & 0x8; }

41

42 [[nodiscard]] constexpr bool is_double() const { return flags_i == DOUBLE; }

43 [[nodiscard]] constexpr bool is_repeatable() const { return flags_i == QUIET; }

44 [[nodiscard]] constexpr bool is_quiet() const { return flags_i == QUIET || flags_i == PQUIET; }

45

46 [[nodiscard]] constexpr bool is_castle() const { return flags_i == CASTLEK || flags_i == CASTLEQ; }

47 [[nodiscard]] constexpr bool is_castle_king() const { return flags_i == CASTLEK; }

48 [[nodiscard]] constexpr bool is_castle_queen() const { return flags_i == CASTLEQ; }

49

50 [[nodiscard]] constexpr bool is_enpassant() const { return flags_i == ENPASSANT; }

51

52 [[nodiscard]] constexpr const Type promoted() const { return static_cast<Type>((flags_i & 0x3) + 1); }

53

54 bool make(Board &board) const;

55

56 operator std::string() const;

57 friend std::ostream &operator<<(std::ostream &os, Move move);

58 void print() const;

59

60 private:

61 inline void piece_remove(Board &board, Type type, Color color, Square square) const;

62 inline void piece_set(Board &board, Type type, Color color, Square square) const;

63 inline void piece_move(Board &board, Type type, Color color, Square source, Square target) const;

64

65 unsigned source_i : 6;

66 unsigned target_i : 6;

67 unsigned flags_i : 4;

68 };

69

70 #endif