Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/pawn.c
src/chess/pawn.c
- changeset 160
- f87832cba8b8
- parent 80
- b980a7192b5a
equal
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| 159:07c7be5661f4 | 160:f87832cba8b8 |
|---|---|
| 29 | 29 |
| 30 #include "pawn.h" | 30 #include "pawn.h" |
| 31 #include "rules.h" | 31 #include "rules.h" |
| 32 | 32 |
| 33 bool pawn_chkrules(GameState *gamestate, 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 = piece_color(move->piece) == 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 unsigned ppiecetype = piece_type(move->promotion); |
| 39 if (!promopiece || promopiece == PAWN || promopiece == KING) { | 39 if (!ppiecetype || ppiecetype == PAWN || ppiecetype == KING) { |
| 40 return false; | 40 return false; |
| 41 } | 41 } |
| 42 } else { | 42 } else { |
| 43 return false; | 43 return false; |
| 44 } | 44 } |
| 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(gamestate->board, move) || | 56 return piece_at(gamestate, mdst(move)) || |
| 57 (gamestate->board[move->fromrow][move->tofile] | 57 enpassant_threat_exists(gamestate, move->fromrow, move->tofile); |
| 58 & ENPASSANT_THREAT); | |
| 59 } else { | 58 } else { |
| 60 return false; | 59 return false; |
| 61 } | 60 } |
| 62 } else { | 61 } else { |
| 63 if (move->fromfile == move->tofile) { | 62 if (move->fromfile == move->tofile) { |
| 70 } | 69 } |
| 71 } | 70 } |
| 72 | 71 |
| 73 bool pawn_isblocked(GameState *gamestate, Move *move) { | 72 bool pawn_isblocked(GameState *gamestate, Move *move) { |
| 74 if (move->torow == move->fromrow + 1 || move->torow == move->fromrow - 1) { | 73 if (move->torow == move->fromrow + 1 || move->torow == move->fromrow - 1) { |
| 75 return mdst(gamestate->board, move) && !move->capture; | 74 return piece_at(gamestate, mdst(move)) && !move->capture; |
| 76 } else { | 75 } else { |
| 77 return mdst(gamestate->board, move) || | 76 return piece_at(gamestate, mdst(move)) || |
| 78 gamestate->board[(move->fromrow+move->torow)/2][move->tofile]; | 77 gamestate->board[(move->fromrow+move->torow)/2][move->tofile]; |
| 79 } | 78 } |
| 80 } | 79 } |
