Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/rules.c
src/chess/rules.c
- changeset 151
- f1b6a0388d85
- parent 147
- 7e3f2d462bb6
equal
deleted
inserted
replaced
| 150:7d57a252948e | 151:f1b6a0388d85 |
|---|---|
| 356 if ((mdst(gamestate->board, move) & COLOR_MASK) | 356 if ((mdst(gamestate->board, move) & COLOR_MASK) |
| 357 == (move->piece & COLOR_MASK)) { | 357 == (move->piece & COLOR_MASK)) { |
| 358 return RULES_VIOLATED; | 358 return RULES_VIOLATED; |
| 359 } | 359 } |
| 360 | 360 |
| 361 /* must capture, if and only if destination is occupied */ | 361 /* must capture, if and only if destination is occupied... */ |
| 362 if ((mdst(gamestate->board, move) == 0 && move->capture) || | 362 if ((mdst(gamestate->board, move) == 0 && move->capture) || |
| 363 (mdst(gamestate->board, move) != 0 && !move->capture)) { | 363 (mdst(gamestate->board, move) != 0 && !move->capture)) { |
| 364 return INVALID_MOVE_SYNTAX; | 364 /* ... or the capture happens en passant */ |
| 365 if (!move->capture || (move->piece & PIECE_MASK) != PAWN || | |
| 366 !(gamestate->board[move->fromrow][move->tofile] | |
| 367 & ENPASSANT_THREAT)) { | |
| 368 return INVALID_MOVE_SYNTAX; | |
| 369 } | |
| 365 } | 370 } |
| 366 | 371 |
| 367 /* validate individual rules */ | 372 /* validate individual rules */ |
| 368 bool chkrules; | 373 bool chkrules; |
| 369 switch (move->piece & PIECE_MASK) { | 374 switch (move->piece & PIECE_MASK) { |
