68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
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#ifndef CHESS_INCLUDED
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#define CHESS_INCLUDED
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdint.h>
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#define U64 unsigned long long
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extern const char *start_pos;
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enum { white, black, both };
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// Squares
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enum Squares {
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a8, b8, c8, d8, e8, f8, g8, h8,
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a7, b7, c7, d7, e7, f7, g7, h7,
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a6, b6, c6, d6, e6, f6, g6, h6,
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a5, b5, c5, d5, e5, f5, g5, h5,
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a4, b4, c4, d4, e4, f4, g4, h4,
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a3, b3, c3, d3, e3, f3, g3, h3,
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a2, b2, c2, d2, e2, f2, g2, h2,
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a1, b1, c1, d1, e1, f1, g1, h1, no_sq
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};
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extern const char *squares_to_coordinates[];
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// Pieces
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enum Pieces { P, N, B, R, Q, K, p, n, b, r, q, k };
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enum { wk = 1, wq = 2, bk = 4, bq = 8 };
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extern char ascii_pieces[12];
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extern char *unicode_pieces[12];
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extern int char_pieces[256];
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extern char promoted_pieces[256];
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// Gamestate
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struct Gamestate {
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U64 piece_bb[12];
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U64 occupancies[3];
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int side;
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int castle;
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int enpassant;
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int fifty;
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int moves;
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};
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typedef struct Gamestate Gamestate;
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// Hasher
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struct ZHasher {
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U64 piece_keys[12][64];
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U64 enpassant_keys[64];
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U64 castle_keys[16];
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U64 side_key;
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U64 init_state;
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};
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typedef struct ZHasher ZHasher;
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U64 rnd64(U64 n);
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void init_zhasher(ZHasher *ht);
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U64 generate_hash(Gamestate *gs, ZHasher *h);
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void parse_fen(char *fen, Gamestate *gs);
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void print_state(Gamestate *g, ZHasher *z);
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#endif
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