Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/pawn.c
src/chess/pawn.c
- changeset 195
- 27d02ccb0cef
- parent 194
- 619f07c95894
equal
deleted
inserted
replaced
| 194:619f07c95894 | 195:27d02ccb0cef |
|---|---|
| 51 if (move->capture) { | 51 if (move->capture) { |
| 52 if (move->fromrank == move->torank + d && ( | 52 if (move->fromrank == move->torank + 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 piece_at(gamestate, move->torank, move->tofile) || | 56 return piece_at(gamestate, move->tofile, move->torank) || |
| 57 enpassant_threat_exists(gamestate, move->fromrank, move->tofile); | 57 enpassant_threat_exists(gamestate, |
| 58 move->tofile, move->fromrank); | |
| 58 } else { | 59 } else { |
| 59 return false; | 60 return false; |
| 60 } | 61 } |
| 61 } else { | 62 } else { |
| 62 if (move->fromfile == move->tofile) { | 63 if (move->fromfile == move->tofile) { |
| 70 } | 71 } |
| 71 | 72 |
| 72 bool pawn_isblocked(const GameState *gamestate, const Move *move) { | 73 bool pawn_isblocked(const GameState *gamestate, const Move *move) { |
| 73 if (move->torank == move->fromrank + 1 | 74 if (move->torank == move->fromrank + 1 |
| 74 || move->torank == move->fromrank - 1) { | 75 || move->torank == move->fromrank - 1) { |
| 75 return piece_at(gamestate, move->torank, move->tofile) | 76 return piece_at(gamestate, move->tofile, move->torank) |
| 76 && !move->capture; | 77 && !move->capture; |
| 77 } else { | 78 } else { |
| 78 return piece_at(gamestate, move->torank, move->tofile) || | 79 return piece_at(gamestate, move->tofile, move->torank) || |
| 79 gamestate->board[(move->fromrank + move->torank) / 2][move->tofile]; | 80 gamestate->board[(move->fromrank + move->torank) / 2][move->tofile]; |
| 80 } | 81 } |
| 81 } | 82 } |
| 82 | 83 |
| 83 size_t pawn_moves(const GameState *gamestate, | 84 size_t pawn_moves(const GameState *gamestate, |
| 84 Color c, Rank r, File f, Move *moves) { | 85 Color c, File f, Rank r, Move *moves) { |
| 85 (void) gamestate; /* no (theoretical) move depends on the game state */ | 86 (void) gamestate; /* no (theoretical) move depends on the game state */ |
| 86 size_t count = 0; | 87 size_t count = 0; |
| 87 int rankdelta = c == WHITE ? 1 : -1; | 88 int rankdelta = c == WHITE ? 1 : -1; |
| 88 int promotionrank = c == WHITE ? 7 : 0; | 89 int promotionrank = c == WHITE ? 7 : 0; |
| 89 int startrank = c == WHITE ? 1 : 6; | 90 int startrank = c == WHITE ? 1 : 6; |
