76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#define FILE_A 0x0101010101010101ULL
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#define FILE_B 0x0202020202020202ULL
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#define FILE_C 0x0404040404040404ULL
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#define FILE_D 0x0808080808080808ULL
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#define FILE_E 0x1010101010101010ULL
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#define FILE_F 0x2020202020202020ULL
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#define FILE_G 0x4040404040404040ULL
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#define FILE_H 0x8080808080808080ULL
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#define RANK_1 0x00000000000000FFULL
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#define RANK_2 0x000000000000FF00ULL
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#define RANK_3 0x0000000000FF0000ULL
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#define RANK_4 0x00000000FF000000ULL
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#define RANK_5 0x000000FF00000000ULL
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#define RANK_6 0x0000FF0000000000ULL
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#define RANK_7 0x00FF000000000000ULL
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#define RANK_8 0xFF00000000000000ULL
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#define SET_BIT(bb, sq) ((bb) |= (1ULL << (sq)))
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#define CLEAR_BIT(bb, sq) ((bb) &= ~(1ULL << (sq)))
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#define GET_BIT(bb, sq) ((bb) & (1ULL << (sq)))
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#define TOGGLE_BIT(bb, sq) ((bb) ^= (1ULL << (sq)))
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enum Color { WHITE = 0, BLACK = 1, BOTH = 2 };
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enum Piece {
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P, N, B, R, Q, K, // 0..5 white
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p, n, b, r, q, k // 6..11 black
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};
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enum Castling {
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CASTLE_WK = 1 << 0,
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CASTLE_WQ = 1 << 1,
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CASTLE_BK = 1 << 2,
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CASTLE_BQ = 1 << 3
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};
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enum MoveFlags {
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MF_NONE = 0,
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MF_CAPTURE = 1 << 0,
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MF_PROMO = 1 << 1,
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MF_ENPASSANT = 1 << 2,
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MF_CASTLE = 1 << 3,
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MF_DOUBLE_PUSH = 1 << 4,
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};
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struct Move {
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uint16_t from;
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uint16_t to;
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uint8_t piece;
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uint8_t promo;
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uint8_t flags;
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};
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struct Board {
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uint64_t pieces[12]; // Each set of pieces get a bitboard for each player.
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uint64_t occ[3]; // Color occupancy bitboards.
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uint64_t king_square[2];
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uint8_t castling_rights;
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int ep_square;
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enum Color side_to_move;
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int halfmove_clock;
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int fullmove_number;
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};
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void create_knight_attack_cache();
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void create_pawn_attack_cache();
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void create_king_attack_cache();
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void print_board();
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int gen_pseudo_moves(struct Board *b, struct Move *out, bool captures_only); |