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 PI 3.141592653589793238462643383279502884197169399
  16
  17 #define lenof(array) ( sizeof(array) / sizeof(*(array)) )
  18
  19 #define STR_INT(x) #x
  20 #define STR(x) STR_INT(x)
  21
  22 enum {
  23     LEFT_BUTTON = 0x1000,
  24     MIDDLE_BUTTON,
  25     RIGHT_BUTTON,
  26     LEFT_DRAG,
  27     MIDDLE_DRAG,
  28     RIGHT_DRAG,
  29     LEFT_RELEASE,
  30     MIDDLE_RELEASE,
  31     RIGHT_RELEASE,
  32     CURSOR_UP,
  33     CURSOR_DOWN,
  34     CURSOR_LEFT,
  35     CURSOR_RIGHT,
  36
  37     MOD_CTRL       = 0x10000000,
  38     MOD_SHFT       = 0x20000000,
  39     MOD_NUM_KEYPAD = 0x40000000,
  40     MOD_MASK       = 0x70000000 /* mask for all modifiers */
  41 };
  42
  43 #define IS_MOUSE_DOWN(m) ( (unsigned)((m) - LEFT_BUTTON) <= \
  44                                (unsigned)(RIGHT_BUTTON - LEFT_BUTTON))
  45 #define IS_MOUSE_DRAG(m) ( (unsigned)((m) - LEFT_DRAG) <= \
  46                                (unsigned)(RIGHT_DRAG - LEFT_DRAG))
  47 #define IS_MOUSE_RELEASE(m) ( (unsigned)((m) - LEFT_RELEASE) <= \
  48                                (unsigned)(RIGHT_RELEASE - LEFT_RELEASE))
  49
  50 #define IGNOREARG(x) ( (x) = (x) )
  51
  52 typedef struct frontend frontend;
  53 typedef struct config_item config_item;
  54 typedef struct midend_data midend_data;
  55 typedef struct random_state random_state;
  56 typedef struct game_params game_params;
  57 typedef struct game_state game_state;
  58 typedef struct game_aux_info game_aux_info;
  59 typedef struct game_ui game_ui;
  60 typedef struct game_drawstate game_drawstate;
  61 typedef struct game game;
  62
  63 #define ALIGN_VNORMAL 0x000
  64 #define ALIGN_VCENTRE 0x100
  65
  66 #define ALIGN_HLEFT   0x000
  67 #define ALIGN_HCENTRE 0x001
  68 #define ALIGN_HRIGHT  0x002
  69
  70 #define FONT_FIXED    0
  71 #define FONT_VARIABLE 1
  72
  73 /*
  74  * Structure used to pass configuration data between frontend and
  75  * game
  76  */
  77 enum { C_STRING, C_CHOICES, C_BOOLEAN, C_END };
  78 struct config_item {
  79     /*
  80      * `name' is never dynamically allocated.
  81      */
  82     char *name;
  83     /*
  84      * `type' contains one of the above values.
  85      */
  86     int type;
  87     /*
  88      * For C_STRING, `sval' is always dynamically allocated and
  89      * non-NULL. For C_BOOLEAN and C_END, `sval' is always NULL.
  90      * For C_CHOICES, `sval' is non-NULL, _not_ dynamically
  91      * allocated, and contains a set of option strings separated by
  92      * a delimiter. The delimeter is also the first character in
  93      * the string, so for example ":Foo:Bar:Baz" gives three
  94      * options `Foo', `Bar' and `Baz'.
  95      */
  96     char *sval;
  97     /*
  98      * For C_BOOLEAN, this is TRUE or FALSE. For C_CHOICES, it
  99      * indicates the chosen index from the `sval' list. In the
 100      * above example, 0==Foo, 1==Bar and 2==Baz.
 101      */
 102     int ival;
 103 };
 104
 105 /*
 106  * Platform routines
 107  */
 108 void fatal(char *fmt, ...);
 109 void frontend_default_colour(frontend *fe, float *output);
 110 void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
 111                int align, int colour, char *text);
 112 void draw_rect(frontend *fe, int x, int y, int w, int h, int colour);
 113 void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour);
 114 void draw_polygon(frontend *fe, int *coords, int npoints,
 115                   int fill, int colour);
 116 void clip(frontend *fe, int x, int y, int w, int h);
 117 void unclip(frontend *fe);
 118 void start_draw(frontend *fe);
 119 void draw_update(frontend *fe, int x, int y, int w, int h);
 120 void end_draw(frontend *fe);
 121 void deactivate_timer(frontend *fe);
 122 void activate_timer(frontend *fe);
 123 void status_bar(frontend *fe, char *text);
 124 void get_random_seed(void **randseed, int *randseedsize);
 125
 126 /*
 127  * midend.c
 128  */
 129 midend_data *midend_new(frontend *fe, const game *ourgame);
 130 void midend_free(midend_data *me);
 131 void midend_set_params(midend_data *me, game_params *params);
 132 void midend_size(midend_data *me, int *x, int *y);
 133 void midend_new_game(midend_data *me);
 134 void midend_restart_game(midend_data *me);
 135 int midend_process_key(midend_data *me, int x, int y, int button);
 136 void midend_force_redraw(midend_data *me);
 137 void midend_redraw(midend_data *me);
 138 float *midend_colours(midend_data *me, int *ncolours);
 139 void midend_timer(midend_data *me, float tplus);
 140 int midend_num_presets(midend_data *me);
 141 void midend_fetch_preset(midend_data *me, int n,
 142                          char **name, game_params **params);
 143 int midend_wants_statusbar(midend_data *me);
 144 enum { CFG_SETTINGS, CFG_SEED, CFG_DESC };
 145 config_item *midend_get_config(midend_data *me, int which, char **wintitle);
 146 char *midend_set_config(midend_data *me, int which, config_item *cfg);
 147 char *midend_game_id(midend_data *me, char *id);
 148 char *midend_text_format(midend_data *me);
 149 char *midend_solve(midend_data *me);
 150 void midend_supersede_game_desc(midend_data *me, char *desc);
 151 char *midend_rewrite_statusbar(midend_data *me, char *text);
 152
 153 /*
 154  * malloc.c
 155  */
 156 void *smalloc(int size);
 157 void *srealloc(void *p, int size);
 158 void sfree(void *p);
 159 char *dupstr(const char *s);
 160 #define snew(type) \
 161     ( (type *) smalloc (sizeof (type)) )
 162 #define snewn(number, type) \
 163     ( (type *) smalloc ((number) * sizeof (type)) )
 164 #define sresize(array, number, type) \
 165     ( (type *) srealloc ((array), (number) * sizeof (type)) )
 166
 167 /*
 168  * misc.c
 169  */
 170 void free_cfg(config_item *cfg);
 171
 172 /*
 173  * version.c
 174  */
 175 extern char ver[];
 176
 177 /*
 178  * random.c
 179  */
 180 random_state *random_init(char *seed, int len);
 181 unsigned long random_bits(random_state *state, int bits);
 182 unsigned long random_upto(random_state *state, unsigned long limit);
 183 void random_free(random_state *state);
 184 char *random_state_encode(random_state *state);
 185 random_state *random_state_decode(char *input);
 186 /* random.c also exports SHA, which occasionally comes in useful. */
 187 typedef unsigned long uint32;
 188 typedef struct {
 189     uint32 h[5];
 190     unsigned char block[64];
 191     int blkused;
 192     uint32 lenhi, lenlo;
 193 } SHA_State;
 194 void SHA_Init(SHA_State *s);
 195 void SHA_Bytes(SHA_State *s, void *p, int len);
 196 void SHA_Final(SHA_State *s, unsigned char *output);
 197 void SHA_Simple(void *p, int len, unsigned char *output);
 198
 199 /*
 200  * Data structure containing the function calls and data specific
 201  * to a particular game. This is enclosed in a data structure so
 202  * that a particular platform can choose, if it wishes, to compile
 203  * all the games into a single combined executable rather than
 204  * having lots of little ones.
 205  */
 206 struct game {
 207     const char *name;
 208     const char *winhelp_topic;
 209     game_params *(*default_params)(void);
 210     int (*fetch_preset)(int i, char **name, game_params **params);
 211     void (*decode_params)(game_params *, char const *string);
 212     char *(*encode_params)(game_params *, int full);
 213     void (*free_params)(game_params *params);
 214     game_params *(*dup_params)(game_params *params);
 215     int can_configure;
 216     config_item *(*configure)(game_params *params);
 217     game_params *(*custom_params)(config_item *cfg);
 218     char *(*validate_params)(game_params *params);
 219     char *(*new_desc)(game_params *params, random_state *rs,
 220                       game_aux_info **aux, int interactive);
 221     void (*free_aux_info)(game_aux_info *aux);
 222     char *(*validate_desc)(game_params *params, char *desc);
 223     game_state *(*new_game)(midend_data *me, game_params *params, char *desc);
 224     game_state *(*dup_game)(game_state *state);
 225     void (*free_game)(game_state *state);
 226     int can_solve;
 227     game_state *(*solve)(game_state *state, game_aux_info *aux, char **error);
 228     int can_format_as_text;
 229     char *(*text_format)(game_state *state);
 230     game_ui *(*new_ui)(game_state *state);
 231     void (*free_ui)(game_ui *ui);
 232     game_state *(*make_move)(game_state *from, game_ui *ui, game_drawstate *ds,
 233                              int x, int y, int button);
 234     void (*size)(game_params *params, int *x, int *y);
 235     float *(*colours)(frontend *fe, game_state *state, int *ncolours);
 236     game_drawstate *(*new_drawstate)(game_state *state);
 237     void (*free_drawstate)(game_drawstate *ds);
 238     void (*redraw)(frontend *fe, game_drawstate *ds, game_state *oldstate,
 239                    game_state *newstate, int dir, game_ui *ui, float anim_time,
 240                    float flash_time);
 241     float (*anim_length)(game_state *oldstate, game_state *newstate, int dir,
 242                          game_ui *ui);
 243     float (*flash_length)(game_state *oldstate, game_state *newstate, int dir,
 244                           game_ui *ui);
 245     int (*wants_statusbar)(void);
 246     int is_timed;
 247     int (*timing_state)(game_state *state);
 248 };
 249
 250 /*
 251  * For one-game-at-a-time platforms, there's a single structure
 252  * like the above, under a fixed name. For all-at-once platforms,
 253  * there's a list of all available puzzles in array form.
 254  */
 255 #ifdef COMBINED
 256 extern const game *gamelist[];
 257 extern const int gamecount;
 258 #else
 259 extern const game thegame;
 260 #endif
 261
 262 #endif /* PUZZLES_PUZZLES_H */