mdw@git.distorted.org.uk Git - sgt/puzzles/blob - puzzles.h

   1 /*
   2  * puzzles.h: header file for my puzzle collection
   3  */
   4
   5 #ifndef PUZZLES_PUZZLES_H
   6 #define PUZZLES_PUZZLES_H
   7
   8 #ifndef TRUE
   9 #define TRUE 1
  10 #endif
  11 #ifndef FALSE
  12 #define FALSE 0
  13 #endif
  14
  15 #define lenof(array) ( sizeof(array) / sizeof(*(array)) )
  16
  17 #define STR_INT(x) #x
  18 #define STR(x) STR_INT(x)
  19
  20 enum {
  21     LEFT_BUTTON = 0x1000,
  22     MIDDLE_BUTTON,
  23     RIGHT_BUTTON,
  24     LEFT_DRAG,
  25     MIDDLE_DRAG,
  26     RIGHT_DRAG,
  27     LEFT_RELEASE,
  28     MIDDLE_RELEASE,
  29     RIGHT_RELEASE,
  30     CURSOR_UP,
  31     CURSOR_DOWN,
  32     CURSOR_LEFT,
  33     CURSOR_RIGHT,
  34
  35     MOD_CTRL       = 0x10000000,
  36     MOD_SHFT       = 0x20000000,
  37     MOD_NUM_KEYPAD = 0x40000000,
  38     MOD_MASK       = 0x70000000 /* mask for all modifiers */
  39 };
  40
  41 #define IS_MOUSE_DOWN(m) ( (unsigned)((m) - LEFT_BUTTON) <= \
  42                                (unsigned)(RIGHT_BUTTON - LEFT_BUTTON))
  43 #define IS_MOUSE_DRAG(m) ( (unsigned)((m) - LEFT_DRAG) <= \
  44                                (unsigned)(RIGHT_DRAG - LEFT_DRAG))
  45 #define IS_MOUSE_RELEASE(m) ( (unsigned)((m) - LEFT_RELEASE) <= \
  46                                (unsigned)(RIGHT_RELEASE - LEFT_RELEASE))
  47
  48 #define IGNOREARG(x) ( (x) = (x) )
  49
  50 typedef struct frontend frontend;
  51 typedef struct config_item config_item;
  52 typedef struct midend_data midend_data;
  53 typedef struct random_state random_state;
  54 typedef struct game_params game_params;
  55 typedef struct game_state game_state;
  56 typedef struct game_aux_info game_aux_info;
  57 typedef struct game_ui game_ui;
  58 typedef struct game_drawstate game_drawstate;
  59 typedef struct game game;
  60
  61 #define ALIGN_VNORMAL 0x000
  62 #define ALIGN_VCENTRE 0x100
  63
  64 #define ALIGN_HLEFT   0x000
  65 #define ALIGN_HCENTRE 0x001
  66 #define ALIGN_HRIGHT  0x002
  67
  68 #define FONT_FIXED    0
  69 #define FONT_VARIABLE 1
  70
  71 /*
  72  * Structure used to pass configuration data between frontend and
  73  * game
  74  */
  75 enum { C_STRING, C_CHOICES, C_BOOLEAN, C_END };
  76 struct config_item {
  77     /*
  78      * `name' is never dynamically allocated.
  79      */
  80     char *name;
  81     /*
  82      * `type' contains one of the above values.
  83      */
  84     int type;
  85     /*
  86      * For C_STRING, `sval' is always dynamically allocated and
  87      * non-NULL. For C_BOOLEAN and C_END, `sval' is always NULL.
  88      * For C_CHOICES, `sval' is non-NULL, _not_ dynamically
  89      * allocated, and contains a set of option strings separated by
  90      * a delimiter. The delimeter is also the first character in
  91      * the string, so for example ":Foo:Bar:Baz" gives three
  92      * options `Foo', `Bar' and `Baz'.
  93      */
  94     char *sval;
  95     /*
  96      * For C_BOOLEAN, this is TRUE or FALSE. For C_CHOICES, it
  97      * indicates the chosen index from the `sval' list. In the
  98      * above example, 0==Foo, 1==Bar and 2==Baz.
  99      */
 100     int ival;
 101 };
 102
 103 /*
 104  * Platform routines
 105  */
 106 void fatal(char *fmt, ...);
 107 void frontend_default_colour(frontend *fe, float *output);
 108 void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
 109                int align, int colour, char *text);
 110 void draw_rect(frontend *fe, int x, int y, int w, int h, int colour);
 111 void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour);
 112 void draw_polygon(frontend *fe, int *coords, int npoints,
 113                   int fill, int colour);
 114 void clip(frontend *fe, int x, int y, int w, int h);
 115 void unclip(frontend *fe);
 116 void start_draw(frontend *fe);
 117 void draw_update(frontend *fe, int x, int y, int w, int h);
 118 void end_draw(frontend *fe);
 119 void deactivate_timer(frontend *fe);
 120 void activate_timer(frontend *fe);
 121 void status_bar(frontend *fe, char *text);
 122 void get_random_seed(void **randseed, int *randseedsize);
 123
 124 /*
 125  * midend.c
 126  */
 127 midend_data *midend_new(frontend *fe, const game *ourgame);
 128 void midend_free(midend_data *me);
 129 void midend_set_params(midend_data *me, game_params *params);
 130 void midend_size(midend_data *me, int *x, int *y);
 131 void midend_new_game(midend_data *me);
 132 void midend_restart_game(midend_data *me);
 133 int midend_process_key(midend_data *me, int x, int y, int button);
 134 void midend_redraw(midend_data *me);
 135 float *midend_colours(midend_data *me, int *ncolours);
 136 void midend_timer(midend_data *me, float tplus);
 137 int midend_num_presets(midend_data *me);
 138 void midend_fetch_preset(midend_data *me, int n,
 139                          char **name, game_params **params);
 140 int midend_wants_statusbar(midend_data *me);
 141 enum { CFG_SETTINGS, CFG_SEED, CFG_DESC };
 142 config_item *midend_get_config(midend_data *me, int which, char **wintitle);
 143 char *midend_set_config(midend_data *me, int which, config_item *cfg);
 144 char *midend_game_id(midend_data *me, char *id);
 145 char *midend_text_format(midend_data *me);
 146 char *midend_solve(midend_data *me);
 147 void midend_supersede_game_desc(midend_data *me, char *desc);
 148 char *midend_rewrite_statusbar(midend_data *me, char *text);
 149
 150 /*
 151  * malloc.c
 152  */
 153 void *smalloc(int size);
 154 void *srealloc(void *p, int size);
 155 void sfree(void *p);
 156 char *dupstr(const char *s);
 157 #define snew(type) \
 158     ( (type *) smalloc (sizeof (type)) )
 159 #define snewn(number, type) \
 160     ( (type *) smalloc ((number) * sizeof (type)) )
 161 #define sresize(array, number, type) \
 162     ( (type *) srealloc ((array), (number) * sizeof (type)) )
 163
 164 /*
 165  * misc.c
 166  */
 167 void free_cfg(config_item *cfg);
 168
 169 /*
 170  * version.c
 171  */
 172 extern char ver[];
 173
 174 /*
 175  * random.c
 176  */
 177 random_state *random_init(char *seed, int len);
 178 unsigned long random_bits(random_state *state, int bits);
 179 unsigned long random_upto(random_state *state, unsigned long limit);
 180 void random_free(random_state *state);
 181 char *random_state_encode(random_state *state);
 182 random_state *random_state_decode(char *input);
 183 /* random.c also exports SHA, which occasionally comes in useful. */
 184 typedef unsigned long uint32;
 185 typedef struct {
 186     uint32 h[5];
 187     unsigned char block[64];
 188     int blkused;
 189     uint32 lenhi, lenlo;
 190 } SHA_State;
 191 void SHA_Init(SHA_State *s);
 192 void SHA_Bytes(SHA_State *s, void *p, int len);
 193 void SHA_Final(SHA_State *s, unsigned char *output);
 194 void SHA_Simple(void *p, int len, unsigned char *output);
 195
 196 /*
 197  * Data structure containing the function calls and data specific
 198  * to a particular game. This is enclosed in a data structure so
 199  * that a particular platform can choose, if it wishes, to compile
 200  * all the games into a single combined executable rather than
 201  * having lots of little ones.
 202  */
 203 struct game {
 204     const char *name;
 205     const char *winhelp_topic;
 206     game_params *(*default_params)(void);
 207     int (*fetch_preset)(int i, char **name, game_params **params);
 208     void (*decode_params)(game_params *, char const *string);
 209     char *(*encode_params)(game_params *, int full);
 210     void (*free_params)(game_params *params);
 211     game_params *(*dup_params)(game_params *params);
 212     int can_configure;
 213     config_item *(*configure)(game_params *params);
 214     game_params *(*custom_params)(config_item *cfg);
 215     char *(*validate_params)(game_params *params);
 216     char *(*new_desc)(game_params *params, random_state *rs,
 217                       game_aux_info **aux);
 218     void (*free_aux_info)(game_aux_info *aux);
 219     char *(*validate_desc)(game_params *params, char *desc);
 220     game_state *(*new_game)(midend_data *me, game_params *params, char *desc);
 221     game_state *(*dup_game)(game_state *state);
 222     void (*free_game)(game_state *state);
 223     int can_solve;
 224     game_state *(*solve)(game_state *state, game_aux_info *aux, char **error);
 225     int can_format_as_text;
 226     char *(*text_format)(game_state *state);
 227     game_ui *(*new_ui)(game_state *state);
 228     void (*free_ui)(game_ui *ui);
 229     game_state *(*make_move)(game_state *from, game_ui *ui, int x, int y,
 230                              int button);
 231     void (*size)(game_params *params, int *x, int *y);
 232     float *(*colours)(frontend *fe, game_state *state, int *ncolours);
 233     game_drawstate *(*new_drawstate)(game_state *state);
 234     void (*free_drawstate)(game_drawstate *ds);
 235     void (*redraw)(frontend *fe, game_drawstate *ds, game_state *oldstate,
 236                    game_state *newstate, int dir, game_ui *ui, float anim_time,
 237                    float flash_time);
 238     float (*anim_length)(game_state *oldstate, game_state *newstate, int dir,
 239                          game_ui *ui);
 240     float (*flash_length)(game_state *oldstate, game_state *newstate, int dir,
 241                           game_ui *ui);
 242     int (*wants_statusbar)(void);
 243     int is_timed;
 244     int (*timing_state)(game_state *state);
 245 };
 246
 247 /*
 248  * For one-game-at-a-time platforms, there's a single structure
 249  * like the above, under a fixed name. For all-at-once platforms,
 250  * there's a list of all available puzzles in array form.
 251  */
 252 #ifdef COMBINED
 253 extern const game *gamelist[];
 254 extern const int gamecount;
 255 #else
 256 extern const game thegame;
 257 #endif
 258
 259 #endif /* PUZZLES_PUZZLES_H */