Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/rules.h
src/chess/rules.h
- changeset 28
- 0c1371488d87
- parent 27
- efeb98bc69c9
- child 29
- c6a1ad6cf749
equal
deleted
inserted
replaced
| 27:efeb98bc69c9 | 28:0c1371488d87 |
|---|---|
| 100 | 100 |
| 101 #define POS_UNSPECIFIED UINT8_MAX | 101 #define POS_UNSPECIFIED UINT8_MAX |
| 102 #define mdst(b,m) b[(m)->torow][(m)->tofile] | 102 #define mdst(b,m) b[(m)->torow][(m)->tofile] |
| 103 #define msrc(b,m) b[(m)->fromrow][(m)->fromfile] | 103 #define msrc(b,m) b[(m)->fromrow][(m)->fromfile] |
| 104 | 104 |
| 105 #define isidx(idx) ((uint8_t)idx < 8) | 105 #define isidx(idx) ((uint8_t)(idx) < 8) |
| 106 | 106 |
| 107 #define isfile(file) (file >= 'a' && file <= 'h') | 107 #define isfile(file) (file >= 'a' && file <= 'h') |
| 108 #define isrow(row) (row >= '1' && row <= '8') | 108 #define isrow(row) (row >= '1' && row <= '8') |
| 109 | 109 |
| 110 #define rowidx(row) (row-'1') | 110 #define rowidx(row) (row-'1') |
| 139 * | 139 * |
| 140 * @param piece one of ROOK, KNIGHT, BISHOP, QUEEN, KING | 140 * @param piece one of ROOK, KNIGHT, BISHOP, QUEEN, KING |
| 141 * @return character value for the specified piece | 141 * @return character value for the specified piece |
| 142 */ | 142 */ |
| 143 char getpiecechr(uint8_t piece); | 143 char getpiecechr(uint8_t piece); |
| 144 | |
| 145 /** | |
| 146 * Checks, if a specified field is covered by a piece of a certain color. | |
| 147 * | |
| 148 * Note: when the field is covered by multiple pieces, this function returns | |
| 149 * the first piece it can find. | |
| 150 * | |
| 151 * @param gamestate the current game state | |
| 152 * @param row row of the field to check | |
| 153 * @param file file of the field to check | |
| 154 * @param color the color of the piece that should threaten the field | |
| 155 * @param threat if not NULL: a pointer to the move structure where | |
| 156 * the move that could be performed to capture the field should be stored | |
| 157 * @return TRUE, if any piece of the specified color threatens the specified | |
| 158 * field (i.e. could capture an opponent piece) | |
| 159 */ | |
| 160 _Bool get_any_threat_for(GameState *gamestate, uint8_t row, uint8_t file, | |
| 161 uint8_t color, Move *threat); | |
| 144 | 162 |
| 145 /** | 163 /** |
| 146 * Checks, if a specified field is covered by a piece of a certain color. | 164 * Checks, if a specified field is covered by a piece of a certain color. |
| 147 * | 165 * |
| 148 * @param gamestate the current game state | 166 * @param gamestate the current game state |
| 150 * @param file file of the field to check | 168 * @param file file of the field to check |
| 151 * @param color the color of the piece that should cover the field | 169 * @param color the color of the piece that should cover the field |
| 152 * @return TRUE, if any piece of the specified color threatens the specified | 170 * @return TRUE, if any piece of the specified color threatens the specified |
| 153 * field (i.e. could capture an opponent piece) | 171 * field (i.e. could capture an opponent piece) |
| 154 */ | 172 */ |
| 155 _Bool is_covered(GameState *gamestate,uint8_t row,uint8_t file,uint8_t color); | 173 #define is_covered(gamestate, row, file, color) \ |
| 174 get_any_threat_for(gamestate, row, file, color, NULL) | |
| 156 | 175 |
| 157 /** | 176 /** |
| 158 * Evaluates a move syntactically and stores the move data in the specified | 177 * Evaluates a move syntactically and stores the move data in the specified |
| 159 * object. | 178 * object. |
| 160 * | 179 * |
