Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/pawn.c
src/chess/pawn.c
- changeset 23
- 824c9522ce66
- parent 19
- 6a26114297a1
- child 47
- d726e4b46c33
equal
deleted
inserted
replaced
| 22:41bbfd4d17a3 | 23:824c9522ce66 |
|---|---|
| 28 */ | 28 */ |
| 29 | 29 |
| 30 #include "pawn.h" | 30 #include "pawn.h" |
| 31 #include "rules.h" | 31 #include "rules.h" |
| 32 | 32 |
| 33 _Bool pawn_chkrules(Board board, Move *move) { | 33 _Bool pawn_chkrules(GameState *gamestate, Move *move) { |
| 34 int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1); | 34 int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1); |
| 35 | 35 |
| 36 if (move->torow == (d < 0 ? 7 : 0)) { | 36 if (move->torow == (d < 0 ? 7 : 0)) { |
| 37 if (move->promotion) { | 37 if (move->promotion) { |
| 38 uint8_t promopiece = move->promotion & PIECE_MASK; | 38 uint8_t promopiece = move->promotion & PIECE_MASK; |
| 51 if (move->capture) { | 51 if (move->capture) { |
| 52 if (move->fromrow == move->torow + d && ( | 52 if (move->fromrow == move->torow + d && ( |
| 53 move->fromfile == move->tofile + 1 || | 53 move->fromfile == move->tofile + 1 || |
| 54 move->fromfile == move->tofile - 1)) { | 54 move->fromfile == move->tofile - 1)) { |
| 55 | 55 |
| 56 return mdst(board,move) | 56 return mdst(gamestate->board, move) || |
| 57 || (board[move->fromrow][move->tofile] & ENPASSANT_THREAT); | 57 (gamestate->board[move->fromrow][move->tofile] |
| 58 & ENPASSANT_THREAT); | |
| 58 } else { | 59 } else { |
| 59 return 0; | 60 return 0; |
| 60 } | 61 } |
| 61 } else { | 62 } else { |
| 62 if (move->fromfile == move->tofile) { | 63 if (move->fromfile == move->tofile) { |
| 67 return 0; | 68 return 0; |
| 68 } | 69 } |
| 69 } | 70 } |
| 70 } | 71 } |
| 71 | 72 |
| 72 _Bool pawn_isblocked(Board board, Move *move) { | 73 _Bool pawn_isblocked(GameState *gamestate, Move *move) { |
| 73 return mdst(board,move) && !move->capture; | 74 return mdst(gamestate->board, move) && !move->capture; |
| 74 } | 75 } |
| 75 | 76 |
| 76 int pawn_getlocation(Board board, Move *move) { | 77 int pawn_getlocation(GameState *gamestate, Move *move) { |
| 77 int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1); | 78 int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1); |
| 78 | 79 |
| 79 if (move->fromfile == POS_UNSPECIFIED) { | 80 if (move->fromfile == POS_UNSPECIFIED) { |
| 80 move->fromfile = move->tofile; | 81 move->fromfile = move->tofile; |
| 81 } | 82 } |
| 83 if (move->fromrow > 6) { | 84 if (move->fromrow > 6) { |
| 84 return INVALID_POSITION; | 85 return INVALID_POSITION; |
| 85 } else { | 86 } else { |
| 86 /* advanced first move */ | 87 /* advanced first move */ |
| 87 if (move->fromrow == (d < 0 ? 2 : 5) && | 88 if (move->fromrow == (d < 0 ? 2 : 5) && |
| 88 msrc(board,move) != move->piece) { | 89 msrc(gamestate->board,move) != move->piece) { |
| 89 | 90 |
| 90 move->fromrow += d; | 91 move->fromrow += d; |
| 91 if (move->fromrow > 6) { | 92 if (move->fromrow > 6) { |
| 92 return INVALID_POSITION; | 93 return INVALID_POSITION; |
| 93 } | 94 } |
