Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/rules.c
src/chess/rules.c
- changeset 185
- c0acc89d6c01
- parent 182
- 04c65336777f
- child 186
- 8230904458a7
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| 184:93c81539b702 | 185:c0acc89d6c01 |
|---|---|
| 643 return INVALID_MOVE_SYNTAX; | 643 return INVALID_MOVE_SYNTAX; |
| 644 } | 644 } |
| 645 | 645 |
| 646 /* must move */ | 646 /* must move */ |
| 647 if (move->fromfile == move->tofile && move->fromrow == move->torow) { | 647 if (move->fromfile == move->tofile && move->fromrow == move->torow) { |
| 648 return INVALID_MOVE_SYNTAX; | 648 return RULES_VIOLATED; |
| 649 } | 649 } |
| 650 | 650 |
| 651 /* does piece exist */ | 651 /* does piece exist */ |
| 652 if (piece_at(gamestate, msrc(move)) != move->piece) { | 652 if (piece_at(gamestate, msrc(move)) != move->piece) { |
| 653 return PIECE_NOT_FOUND; | 653 return PIECE_NOT_FOUND; |
| 665 if (!((piece_at_dst == 0) ^ move->capture)) { | 665 if (!((piece_at_dst == 0) ^ move->capture)) { |
| 666 /* ... or the capture happens en passant */ | 666 /* ... or the capture happens en passant */ |
| 667 if (!move->capture || piece_type(move->piece) != PAWN || | 667 if (!move->capture || piece_type(move->piece) != PAWN || |
| 668 !enpassant_threat_exists(gamestate, | 668 !enpassant_threat_exists(gamestate, |
| 669 move->fromrow, move->tofile)) { | 669 move->fromrow, move->tofile)) { |
| 670 return INVALID_MOVE_SYNTAX; | 670 return RULES_VIOLATED; |
| 671 } | 671 } |
| 672 } | 672 } |
| 673 | 673 |
| 674 /* validate individual rules */ | 674 /* validate individual rules */ |
| 675 bool chkrules; | 675 bool chkrules; |
