Mercurial > hg > terminal-chess / file comparison
comparison: src/rules/pawn.c
src/rules/pawn.c
- changeset 18
- 6008840b859e
- parent 16
- a298c6637c30
equal
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| 17:2aed5418e142 | 18:6008840b859e |
|---|---|
| 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(Board board, 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 | |
| 36 if (move->torow == (d < 0 ? 7 : 0)) { | |
| 37 if (move->promotion) { | |
| 38 uint8_t promopiece = move->promotion & PIECE_MASK; | |
| 39 if (!promopiece || promopiece == PAWN || promopiece == KING) { | |
| 40 return FALSE; | |
| 41 } | |
| 42 } else { | |
| 43 return FALSE; | |
| 44 } | |
| 45 } else { | |
| 46 if (move->promotion) { | |
| 47 return FALSE; | |
| 48 } | |
| 49 } | |
| 50 | |
| 35 if (move->capture) { | 51 if (move->capture) { |
| 36 if (move->fromrow == move->torow + d && ( | 52 if (move->fromrow == move->torow + d && ( |
| 37 move->fromfile == move->tofile + 1 || | 53 move->fromfile == move->tofile + 1 || |
| 38 move->fromfile == move->tofile - 1)) { | 54 move->fromfile == move->tofile - 1)) { |
| 39 | 55 |
