Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/rules.h
src/chess/rules.h
- changeset 129
- 189c7c77aaab
- parent 122
- e65d9b5e9324
- child 130
- 3fc6b1d6cbe9
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| 128:ce38ee9bc3af | 129:189c7c77aaab |
|---|---|
| 28 */ | 28 */ |
| 29 | 29 |
| 30 #ifndef RULES_H | 30 #ifndef RULES_H |
| 31 #define RULES_H | 31 #define RULES_H |
| 32 | 32 |
| 33 #include "game-info.h" | |
| 34 | |
| 35 #include <stdint.h> | 33 #include <stdint.h> |
| 36 #include <stdbool.h> | 34 #include <stdbool.h> |
| 37 | 35 |
| 38 #define VALID_MOVE_SYNTAX 0 | 36 #define VALID_MOVE_SYNTAX 0 |
| 39 #define VALID_MOVE_SEMANTICS 0 /* use same code for a success */ | 37 #define VALID_MOVE_SEMANTICS 0 /* use same code for a success */ |
| 46 #define KING_MOVES_INTO_CHECK 7 | 44 #define KING_MOVES_INTO_CHECK 7 |
| 47 #define RULES_VIOLATED 10 | 45 #define RULES_VIOLATED 10 |
| 48 | 46 |
| 49 #define ENPASSANT_THREAT 0x40 | 47 #define ENPASSANT_THREAT 0x40 |
| 50 | 48 |
| 49 #define WHITE 0x10 | |
| 50 #define BLACK 0x20 | |
| 51 #define opponent_color(color) ((color)==WHITE?BLACK:WHITE) | |
| 52 | |
| 53 #define PIECE_MASK 0x0F | |
| 54 #define COLOR_MASK 0x30 | |
| 55 | |
| 56 #define PAWN 0x01 | |
| 57 #define ROOK 0x02 | |
| 58 #define KNIGHT 0x03 | |
| 59 #define BISHOP 0x04 | |
| 60 #define QUEEN 0x05 | |
| 61 #define KING 0x06 | |
| 62 | |
| 63 #define WPAWN (WHITE|PAWN) | |
| 64 #define WROOK (WHITE|ROOK) | |
| 65 #define WKNIGHT (WHITE|KNIGHT) | |
| 66 #define WBISHOP (WHITE|BISHOP) | |
| 67 #define WQUEEN (WHITE|QUEEN) | |
| 68 #define WKING (WHITE|KING) | |
| 69 #define BPAWN (BLACK|PAWN) | |
| 70 #define BROOK (BLACK|ROOK) | |
| 71 #define BKNIGHT (BLACK|KNIGHT) | |
| 72 #define BBISHOP (BLACK|BISHOP) | |
| 73 #define BQUEEN (BLACK|QUEEN) | |
| 74 #define BKING (BLACK|KING) | |
| 75 | |
| 76 typedef uint8_t Board[8][8]; | |
| 77 | |
| 78 struct movetimeval { | |
| 79 uint64_t tv_sec; | |
| 80 int32_t tv_usec; | |
| 81 }; | |
| 82 | |
| 83 typedef struct { | |
| 84 uint8_t piece; | |
| 85 uint8_t fromfile; | |
| 86 uint8_t fromrow; | |
| 87 uint8_t tofile; | |
| 88 uint8_t torow; | |
| 89 uint8_t promotion; | |
| 90 uint8_t check; | |
| 91 uint8_t capture; | |
| 92 struct movetimeval timestamp; | |
| 93 struct movetimeval movetime; | |
| 94 char string[8]; | |
| 95 } Move; | |
| 96 | |
| 97 typedef struct { | |
| 98 uint8_t servercolor; | |
| 99 uint8_t timecontrol; | |
| 100 uint16_t time; | |
| 101 uint16_t addtime; | |
| 102 } GameInfo; | |
| 103 | |
| 104 /** The buffer length for player names in GameInfo structures. */ | |
| 105 #define PLAYER_NAME_BUFLEN 32 | |
| 106 | |
| 107 typedef struct { | |
| 108 Board board; | |
| 109 Move* moves; | |
| 110 /** optional name of the white player */ | |
| 111 char wname[PLAYER_NAME_BUFLEN]; | |
| 112 /** optional name of the black player */ | |
| 113 char bname[PLAYER_NAME_BUFLEN]; | |
| 114 /** capacity of the move array */ | |
| 115 unsigned movecapacity; | |
| 116 /** number of (half-)moves (counting BOTH colors) */ | |
| 117 unsigned int movecount; | |
| 118 /** a premove that shall be evaluated next time it's our turn */ | |
| 119 char premove[8]; | |
| 120 bool checkmate; | |
| 121 bool stalemate; | |
| 122 bool remis; | |
| 123 bool wresign; | |
| 124 bool bresign; | |
| 125 /** this flag is only supposed to be set when the opponent disconnects */ | |
| 126 bool ragequit; | |
| 127 bool review; | |
| 128 } GameState; | |
| 129 | |
| 130 #define is_game_running(gamestate) !((gamestate)->checkmate || \ | |
| 131 (gamestate)->wresign || (gamestate)->bresign || \ | |
| 132 (gamestate)->stalemate || (gamestate)->remis || (gamestate)->review) | |
| 133 | |
| 134 #define last_move(gamestate) \ | |
| 135 ((gamestate)->moves[(gamestate)->movecount-1]) | |
| 136 | |
| 51 #define POS_UNSPECIFIED UINT8_MAX | 137 #define POS_UNSPECIFIED UINT8_MAX |
| 52 #define mdst(b,m) b[(m)->torow][(m)->tofile] | 138 #define mdst(b,m) b[(m)->torow][(m)->tofile] |
| 53 #define msrc(b,m) b[(m)->fromrow][(m)->fromfile] | 139 #define msrc(b,m) b[(m)->fromrow][(m)->fromfile] |
| 54 | 140 |
| 55 #define isidx(idx) ((uint8_t)(idx) < 8) | 141 #define isidx(idx) ((uint8_t)(idx) < 8) |
| 68 #define chkidx(move) (chkidx_from(move) && chkidx_to(move)) | 154 #define chkidx(move) (chkidx_from(move) && chkidx_to(move)) |
| 69 | 155 |
| 70 /* secure versions - use, if index is not checked with isidx() */ | 156 /* secure versions - use, if index is not checked with isidx() */ |
| 71 #define fileidx_s(c) (isfile(c)?fileidx(c):POS_UNSPECIFIED) | 157 #define fileidx_s(c) (isfile(c)?fileidx(c):POS_UNSPECIFIED) |
| 72 #define rowidx_s(c) (isrow(c)?rowidx(c):POS_UNSPECIFIED) | 158 #define rowidx_s(c) (isrow(c)?rowidx(c):POS_UNSPECIFIED) |
| 159 | |
| 160 | |
| 161 /** | |
| 162 * Initializes a game state and prepares the chess board. | |
| 163 * @param gamestate the game state to initialize | |
| 164 */ | |
| 165 void gamestate_init(GameState *gamestate); | |
| 166 | |
| 167 /** | |
| 168 * Cleans up a game state and frees the memory for the movement list. | |
| 169 * @param gamestate the game state to clean up | |
| 170 */ | |
| 171 void gamestate_cleanup(GameState *gamestate); | |
| 73 | 172 |
| 74 /** | 173 /** |
| 75 * Maps a character to a piece. | 174 * Maps a character to a piece. |
| 76 * | 175 * |
| 77 * Does not work for pawns, since they don't have a character. | 176 * Does not work for pawns, since they don't have a character. |
