Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/king.c
src/chess/king.c
- changeset 80
- b980a7192b5a
- parent 64
- 4eda5df55f86
equal
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inserted
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| 79:ffd452cf05ff | 80:b980a7192b5a |
|---|---|
| 29 | 29 |
| 30 #include "rules.h" | 30 #include "rules.h" |
| 31 #include "king.h" | 31 #include "king.h" |
| 32 #include <stdlib.h> | 32 #include <stdlib.h> |
| 33 | 33 |
| 34 static _Bool king_castling_chkmoved(GameState *gamestate, | 34 static bool king_castling_chkmoved(GameState *gamestate, |
| 35 uint8_t row, uint8_t file) { | 35 uint8_t row, uint8_t file) { |
| 36 | 36 |
| 37 MoveList *ml = gamestate->movelist; | 37 MoveList *ml = gamestate->movelist; |
| 38 while (ml) { | 38 while (ml) { |
| 39 if (ml->move.fromfile == file && ml->move.fromrow == row) { | 39 if (ml->move.fromfile == file && ml->move.fromrow == row) { |
| 40 return 1; | 40 return true; |
| 41 } | 41 } |
| 42 ml = ml->next; | 42 ml = ml->next; |
| 43 } | 43 } |
| 44 | 44 |
| 45 return 0; | 45 return false; |
| 46 } | 46 } |
| 47 | 47 |
| 48 _Bool king_chkrules(GameState *gamestate, Move* move) { | 48 bool king_chkrules(GameState *gamestate, Move* move) { |
| 49 if (abs(move->torow - move->fromrow) <= 1 && | 49 if (abs(move->torow - move->fromrow) <= 1 && |
| 50 abs(move->tofile - move->fromfile) <= 1) { | 50 abs(move->tofile - move->fromfile) <= 1) { |
| 51 return 1; | 51 return true; |
| 52 } else { | 52 } else { |
| 53 /* castling */ | 53 /* castling */ |
| 54 if (move->fromrow == move->torow && | 54 if (move->fromrow == move->torow && |
| 55 move->fromrow == ((move->piece&COLOR_MASK) == WHITE ? 0 : 7) && | 55 move->fromrow == ((move->piece&COLOR_MASK) == WHITE ? 0 : 7) && |
| 56 move->fromfile == fileidx('e') && | 56 move->fromfile == fileidx('e') && |
| 59 return !king_castling_chkmoved(gamestate, | 59 return !king_castling_chkmoved(gamestate, |
| 60 move->fromrow, move->fromfile) && | 60 move->fromrow, move->fromfile) && |
| 61 !king_castling_chkmoved(gamestate, move->fromrow, | 61 !king_castling_chkmoved(gamestate, move->fromrow, |
| 62 move->tofile == fileidx('c') ? 0 : 7); | 62 move->tofile == fileidx('c') ? 0 : 7); |
| 63 } else { | 63 } else { |
| 64 return 0; | 64 return false; |
| 65 } | 65 } |
| 66 } | 66 } |
| 67 } | 67 } |
| 68 | 68 |
| 69 _Bool king_isblocked(GameState *gamestate, Move *move) { | 69 bool king_isblocked(GameState *gamestate, Move *move) { |
| 70 | 70 |
| 71 uint8_t opponent_color = opponent_color(move->piece&COLOR_MASK); | 71 uint8_t opponent_color = opponent_color(move->piece&COLOR_MASK); |
| 72 | 72 |
| 73 /* being in check does not "block" the king, so don't test it here */ | 73 /* being in check does not "block" the king, so don't test it here */ |
| 74 _Bool blocked = 0; | 74 bool blocked = false; |
| 75 | 75 |
| 76 /* just test, if castling move is blocked */ | 76 /* just test, if castling move is blocked */ |
| 77 if (abs(move->tofile - move->fromfile) == 2) { | 77 if (abs(move->tofile - move->fromfile) == 2) { |
| 78 if (move->tofile == fileidx('c')) { | 78 if (move->tofile == fileidx('c')) { |
| 79 blocked |= gamestate->board[move->torow][fileidx('b')]; | 79 blocked |= gamestate->board[move->torow][fileidx('b')]; |
