Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/rules.h
src/chess/rules.h
- changeset 193
- d1420f5c5704
- parent 186
- 8230904458a7
- child 194
- 619f07c95894
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replaced
| 192:e57e2874fb2a | 193:d1420f5c5704 |
|---|---|
| 47 #define MISSING_CHECKMATE 9 | 47 #define MISSING_CHECKMATE 9 |
| 48 #define INVALID_CHECK 10 | 48 #define INVALID_CHECK 10 |
| 49 #define INVALID_CHECKMATE 11 | 49 #define INVALID_CHECKMATE 11 |
| 50 #define RULES_VIOLATED 32 | 50 #define RULES_VIOLATED 32 |
| 51 | 51 |
| 52 #if __STDC_VERSION__ < 202310L | |
| 53 /* since #warning is also a C23 feature, the only hope is this: */ | |
| 54 #pragma GCC warning "Type safety for enums is only available since C23" | |
| 55 #define enum_uint8_t(name) enum e##name | |
| 56 #define typedef_enum_uint8_t(name) typedef uint8_t name | |
| 57 #else | |
| 58 #define enum_uint8_t(name) enum e##name : uint8_t | |
| 59 #define typedef_enum_uint8_t(name) typedef enum e##name name | |
| 60 #endif | |
| 61 | |
| 52 #define ENPASSANT_THREAT 0x40u | 62 #define ENPASSANT_THREAT 0x40u |
| 53 | 63 |
| 54 #define WHITE 0x10u | 64 enum_uint8_t(Color) { |
| 55 #define BLACK 0x20u | 65 WHITE = 0x10u, |
| 56 #define opponent_color(color) ((color)==WHITE?BLACK:WHITE) | 66 BLACK = 0x20u, |
| 67 }; | |
| 68 typedef_enum_uint8_t(Color); | |
| 69 | |
| 70 static inline Color opponent_color(Color color) { | |
| 71 return color == WHITE ? BLACK : WHITE; | |
| 72 } | |
| 57 | 73 |
| 58 #define PIECE_MASK 0x0Fu | 74 #define PIECE_MASK 0x0Fu |
| 59 #define COLOR_MASK 0x30u | 75 #define COLOR_MASK 0x30u |
| 60 | 76 |
| 61 #define PAWN 0x01u | 77 #define PAWN 0x01u |
| 63 #define KNIGHT 0x03u | 79 #define KNIGHT 0x03u |
| 64 #define BISHOP 0x04u | 80 #define BISHOP 0x04u |
| 65 #define QUEEN 0x05u | 81 #define QUEEN 0x05u |
| 66 #define KING 0x06u | 82 #define KING 0x06u |
| 67 | 83 |
| 68 #define WPAWN (WHITE|PAWN) | 84 enum_uint8_t(Piece) { |
| 69 #define WROOK (WHITE|ROOK) | 85 WPAWN = WHITE|PAWN, |
| 70 #define WKNIGHT (WHITE|KNIGHT) | 86 WROOK = WHITE|ROOK, |
| 71 #define WBISHOP (WHITE|BISHOP) | 87 WKNIGHT = WHITE|KNIGHT, |
| 72 #define WQUEEN (WHITE|QUEEN) | 88 WBISHOP = WHITE|BISHOP, |
| 73 #define WKING (WHITE|KING) | 89 WQUEEN = WHITE|QUEEN, |
| 74 #define BPAWN (BLACK|PAWN) | 90 WKING = WHITE|KING, |
| 75 #define BROOK (BLACK|ROOK) | 91 BPAWN = BLACK|PAWN, |
| 76 #define BKNIGHT (BLACK|KNIGHT) | 92 BROOK = BLACK|ROOK, |
| 77 #define BBISHOP (BLACK|BISHOP) | 93 BKNIGHT = BLACK|KNIGHT, |
| 78 #define BQUEEN (BLACK|QUEEN) | 94 BBISHOP = BLACK|BISHOP, |
| 79 #define BKING (BLACK|KING) | 95 BQUEEN = BLACK|QUEEN, |
| 96 BKING = BLACK|KING, | |
| 97 }; | |
| 98 typedef_enum_uint8_t(Piece); | |
| 99 | |
| 100 #define POS_UNSPECIFIED 255u | |
| 101 enum_uint8_t(Row) { | |
| 102 RANK_1 = 0, RANK_2, RANK_3, RANK_4, RANK_5, RANK_6, RANK_7, RANK_8, | |
| 103 RANK_UNSPECIFIED = POS_UNSPECIFIED | |
| 104 }; | |
| 105 typedef_enum_uint8_t(Row); | |
| 106 | |
| 107 enum_uint8_t(File) { | |
| 108 FILE_A = 0, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H, | |
| 109 FILE_UNSPECIFIED = POS_UNSPECIFIED | |
| 110 }; | |
| 111 typedef_enum_uint8_t(File); | |
| 80 | 112 |
| 81 typedef uint8_t Board[8][8]; | 113 typedef uint8_t Board[8][8]; |
| 82 typedef uint8_t BoardIndex; | |
| 83 typedef BoardIndex Row; | |
| 84 typedef BoardIndex File; | |
| 85 typedef uint8_t Piece; | |
| 86 typedef uint8_t Color; | |
| 87 | 114 |
| 88 struct movetimeval { | 115 struct movetimeval { |
| 89 uint64_t sec; | 116 uint64_t sec; |
| 90 int32_t usec; /* important that this is signed b/c potential carry */ | 117 int32_t usec; /* important that this is signed b/c potential carry */ |
| 91 }; | 118 }; |
| 152 /** this flag is only supposed to be set when the opponent disconnects */ | 179 /** this flag is only supposed to be set when the opponent disconnects */ |
| 153 bool ragequit; | 180 bool ragequit; |
| 154 bool review; | 181 bool review; |
| 155 } GameState; | 182 } GameState; |
| 156 | 183 |
| 157 #define piece_type(piece) ((piece)&PIECE_MASK) | 184 #define piece_type(piece) ((uint8_t)(piece)&PIECE_MASK) |
| 158 #define piece_color(piece) ((piece)&COLOR_MASK) | 185 #define piece_color(piece) ((uint8_t)(piece)&COLOR_MASK) |
| 159 #define mkpiece(type,color) ((type)|(color)) | 186 #define mkpiece(type,color) (Piece)((type)|(color)) |
| 160 | 187 |
| 161 #define POS_UNSPECIFIED UINT8_MAX | |
| 162 #define mdst(m) (m)->torow, (m)->tofile | 188 #define mdst(m) (m)->torow, (m)->tofile |
| 163 #define msrc(m) (m)->fromrow, (m)->fromfile | 189 #define msrc(m) (m)->fromrow, (m)->fromfile |
| 164 | 190 |
| 165 /** Checks if the index is specified and valid. */ | 191 /** Checks if the index is specified and valid. */ |
| 166 #define isidx(idx) ((BoardIndex)(idx) < 8) | 192 static inline bool isidx(uint8_t idx) {return idx < 8;} |
| 167 /** Checks if the index is unspecified or valid. */ | 193 /** Checks if the index is unspecified or valid. */ |
| 168 #define isidxr(idx) ((idx) == POS_UNSPECIFIED || (BoardIndex)(idx) < 8) | 194 static inline bool isidxr(uint8_t idx) {return idx==POS_UNSPECIFIED || idx<8;} |
| 169 | 195 |
| 170 #define isfile(file) (file >= 'a' && file <= 'h') | 196 static inline bool isfile(char file) {return file >= 'a' && file <= 'h';} |
| 171 #define isrow(row) (row >= '1' && row <= '8') | 197 static inline bool isrow(char row) {return row >= '1' && row <= '8';} |
| 172 | 198 |
| 173 #define rowidx(row) (row-'1') | 199 static inline Row rowidx(char row) {return row-'1';} |
| 174 #define fileidx(file) (file-'a') | 200 static inline File fileidx(char file) {return file-'a';} |
| 175 | 201 |
| 176 #define rowchr(row) (row+'1') | 202 static inline char rowchr(Row row) {return (char)row+'1';} |
| 177 #define filechr(file) (file+'a') | 203 static inline char filechr(File file) {return (char)file+'a';} |
| 178 | |
| 179 /* secure versions - use, if index is not checked with isidx() */ | |
| 180 #define fileidx_s(c) (isfile(c)?fileidx(c):POS_UNSPECIFIED) | |
| 181 #define rowidx_s(c) (isrow(c)?rowidx(c):POS_UNSPECIFIED) | |
| 182 | 204 |
| 183 | 205 |
| 184 static inline void enpassant_threat_add(GameState *gamestate, | 206 static inline void enpassant_threat_add(GameState *gamestate, |
| 185 Row row, File file) { | 207 Row row, File file) { |
| 186 gamestate->board[row][file] |= ENPASSANT_THREAT; | 208 gamestate->board[row][file] |= ENPASSANT_THREAT; |
