diff options
Diffstat (limited to 'FICS/movecheck.c')
| -rw-r--r-- | FICS/movecheck.c | 59 |
1 files changed, 34 insertions, 25 deletions
diff --git a/FICS/movecheck.c b/FICS/movecheck.c index 99996eb..99254be 100644 --- a/FICS/movecheck.c +++ b/FICS/movecheck.c @@ -1251,6 +1251,39 @@ backup_move_timeseal_block(int g, move_t *m) } #endif // TIMESEAL +PRIVATE void +update_enpassant_array(int g, int mode, game_state_t *gs) +{ + move_t *m1; + + if (!(garray[g].numHalfMoves > 0)) + return; + + m1 = ((mode == REL_GAME) + ? &garray[g].moveList[garray[g].numHalfMoves - 1] + : &garray[g].examMoveList[garray[g].numHalfMoves - 1]); + + if (piecetype(gs->board[m1->toFile][m1->toRank]) == PAWN) { + if ((m1->toRank - m1->fromRank) == 2) { + if (m1->toFile < 7 && + gs->board[m1->toFile + 1][3] == B_PAWN) + gs->ep_possible[1][m1->toFile + 1] = -1; + if (m1->toFile - 1 >= 0 && + gs->board[m1->toFile - 1][3] == B_PAWN) + gs->ep_possible[1][m1->toFile - 1] = 1; + } + + if ((m1->toRank - m1->fromRank) == -2) { + if (m1->toFile < 7 && + gs->board[m1->toFile + 1][4] == W_PAWN) + gs->ep_possible[0][m1->toFile + 1] = -1; + if (m1->toFile - 1 >= 0 && + gs->board[m1->toFile - 1][4] == W_PAWN) + gs->ep_possible[0][m1->toFile - 1] = 1; + } + } +} + PUBLIC int backup_move(int g, int mode) { @@ -1445,31 +1478,7 @@ backup_move(int g, int mode) * Takeback of last move is done already. It's time to update * enpassant array... */ - if (garray[g].numHalfMoves > 0) { - m1 = ((mode == REL_GAME) - ? &garray[g].moveList[garray[g].numHalfMoves - 1] - : &garray[g].examMoveList[garray[g].numHalfMoves - 1]); - - if (piecetype(gs->board[m1->toFile][m1->toRank]) == PAWN) { - if ((m1->toRank - m1->fromRank) == 2) { - if (m1->toFile < 7 && - gs->board[m1->toFile + 1][3] == B_PAWN) - gs->ep_possible[1][m1->toFile + 1] = -1; - if (m1->toFile - 1 >= 0 && - gs->board[m1->toFile - 1][3] == B_PAWN) - gs->ep_possible[1][m1->toFile - 1] = 1; - } - - if ((m1->toRank - m1->fromRank) == -2) { - if (m1->toFile < 7 && - gs->board[m1->toFile + 1][4] == W_PAWN) - gs->ep_possible[0][m1->toFile + 1] = -1; - if (m1->toFile - 1 >= 0 && - gs->board[m1->toFile - 1][4] == W_PAWN) - gs->ep_possible[0][m1->toFile - 1] = 1; - } - } - } + update_enpassant_array(g, mode, gs); return MOVE_OK; } |