diff options
| author | Markus Uhlin <markus@nifty-networks.net> | 2024-03-17 19:54:44 +0100 |
|---|---|---|
| committer | Markus Uhlin <markus@nifty-networks.net> | 2024-03-17 19:54:44 +0100 |
| commit | 6968093d6d4b72e8cc99ab4dce34321df6d98f7e (patch) | |
| tree | 198ab5c3d2ac877857fc2d4e76dac7d4d5413366 | |
| parent | 5706d1c44f9c0eaa7d073539e45ac38d032ce192 (diff) | |
Reformatted legal_king_move()
| -rw-r--r-- | FICS/movecheck.c | 97 |
1 files changed, 58 insertions, 39 deletions
diff --git a/FICS/movecheck.c b/FICS/movecheck.c index 3f08b18..5228495 100644 --- a/FICS/movecheck.c +++ b/FICS/movecheck.c @@ -291,46 +291,65 @@ PRIVATE int is_square_attacked (game_state_t *gs, int kf, int kr) else return 0; } -PRIVATE int legal_king_move(game_state_t * gs, int ff, int fr, int tf, int tr) +PRIVATE int +legal_king_move(game_state_t *gs, int ff, int fr, int tf, int tr) { - if (gs->onMove == WHITE) { - /* King side castling */ - if ((fr == 0) && (tr == 0) && (ff == 4) && (tf == 6) && !gs->wkmoved - && (!gs->wkrmoved) && (gs->board[5][0] == NOPIECE) && - (gs->board[6][0] == NOPIECE) && (gs->board[7][0] == W_ROOK) && - (!is_square_attacked(gs, 4, 0)) && (!is_square_attacked(gs, 5, 0))) { - return 1; - } - /* Queen side castling */ - if ((fr == 0) && (tr == 0) && (ff == 4) && (tf == 2) && !gs->wkmoved - && (!gs->wqrmoved) && (gs->board[3][0] == NOPIECE) && - (gs->board[2][0] == NOPIECE) && (gs->board[1][0] == NOPIECE) && - (gs->board[0][0] == W_ROOK) && - (!is_square_attacked(gs, 4, 0)) && (!is_square_attacked(gs, 3, 0))) { - return 1; - } - } else { /* Black */ - /* King side castling */ - if ((fr == 7) && (tr == 7) && (ff == 4) && (tf == 6) && !gs->bkmoved - && (!gs->bkrmoved) && (gs->board[5][7] == NOPIECE) && - (gs->board[6][7] == NOPIECE) && (gs->board[7][7] == B_ROOK) && - (!is_square_attacked(gs, 4, 7)) && (!is_square_attacked(gs, 5, 7))) { - return 1; - } - /* Queen side castling */ - if ((fr == 7) && (tr == 7) && (ff == 4) && (tf == 2) && (!gs->bkmoved) - && (!gs->bqrmoved) && (gs->board[3][7] == NOPIECE) && - (gs->board[2][7] == NOPIECE) && (gs->board[1][7] == NOPIECE) && - (gs->board[0][7] == B_ROOK) && - (!is_square_attacked(gs, 4, 7)) && (!is_square_attacked(gs, 3, 7))) { - return 1; - } - } - if (((ff - tf) > 1) || ((tf - ff) > 1)) - return 0; - if (((fr - tr) > 1) || ((tr - fr) > 1)) - return 0; - return 1; + if (gs->onMove == WHITE) { + /* King side castling */ + if (fr == 0 && tr == 0 && ff == 4 && tf == 6 && + !gs->wkmoved && + !gs->wkrmoved && + gs->board[5][0] == NOPIECE && + gs->board[6][0] == NOPIECE && + gs->board[7][0] == W_ROOK && + !is_square_attacked(gs, 4, 0) && + !is_square_attacked(gs, 5, 0)) + return 1; + + /* Queen side castling */ + if (fr == 0 && tr == 0 && ff == 4 && tf == 2 && + !gs->wkmoved && + !gs->wqrmoved && + gs->board[3][0] == NOPIECE && + gs->board[2][0] == NOPIECE && + gs->board[1][0] == NOPIECE && + gs->board[0][0] == W_ROOK && + !is_square_attacked(gs, 4, 0) && + !is_square_attacked(gs, 3, 0)) + return 1; + } else { /* Black */ + /* King side castling */ + if (fr == 7 && tr == 7 && ff == 4 && tf == 6 && + !gs->bkmoved && + !gs->bkrmoved && + gs->board[5][7] == NOPIECE && + gs->board[6][7] == NOPIECE && + gs->board[7][7] == B_ROOK && + !is_square_attacked(gs, 4, 7) && + !is_square_attacked(gs, 5, 7)) + return 1; + + /* Queen side castling */ + if (fr == 7 && tr == 7 && ff == 4 && tf == 2 && + !gs->bkmoved && + !gs->bqrmoved && + gs->board[3][7] == NOPIECE && + gs->board[2][7] == NOPIECE && + gs->board[1][7] == NOPIECE && + gs->board[0][7] == B_ROOK && + !is_square_attacked(gs, 4, 7) && + !is_square_attacked(gs, 3, 7)) + return 1; + } + + if ((ff - tf) > 1 || + (tf - ff) > 1) + return 0; + if ((fr - tr) > 1 || + (tr - fr) > 1) + return 0; + + return 1; } PRIVATE void |