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 enum {
  18     LEFT_BUTTON = 0x1000,
  19     MIDDLE_BUTTON,
  20     RIGHT_BUTTON,
  21     LEFT_DRAG,
  22     MIDDLE_DRAG,
  23     RIGHT_DRAG,
  24     LEFT_RELEASE,
  25     MIDDLE_RELEASE,
  26     RIGHT_RELEASE,
  27     CURSOR_UP,
  28     CURSOR_DOWN,
  29     CURSOR_LEFT,
  30     CURSOR_RIGHT,
  31     CURSOR_UP_LEFT,
  32     CURSOR_DOWN_LEFT,
  33     CURSOR_UP_RIGHT,
  34     CURSOR_DOWN_RIGHT
  35 };
  36
  37 #define IGNOREARG(x) ( (x) = (x) )
  38
  39 typedef struct frontend frontend;
  40 typedef struct config_item config_item;
  41 typedef struct midend_data midend_data;
  42 typedef struct random_state random_state;
  43 typedef struct game_params game_params;
  44 typedef struct game_state game_state;
  45 typedef struct game_ui game_ui;
  46 typedef struct game_drawstate game_drawstate;
  47 typedef struct game game;
  48
  49 #define ALIGN_VNORMAL 0x000
  50 #define ALIGN_VCENTRE 0x100
  51
  52 #define ALIGN_HLEFT   0x000
  53 #define ALIGN_HCENTRE 0x001
  54 #define ALIGN_HRIGHT  0x002
  55
  56 #define FONT_FIXED    0
  57 #define FONT_VARIABLE 1
  58
  59 /*
  60  * Structure used to pass configuration data between frontend and
  61  * game
  62  */
  63 enum { C_STRING, C_CHOICES, C_BOOLEAN, C_END };
  64 struct config_item {
  65     /*
  66      * `name' is never dynamically allocated.
  67      */
  68     char *name;
  69     /*
  70      * `type' contains one of the above values.
  71      */
  72     int type;
  73     /*
  74      * For C_STRING, `sval' is always dynamically allocated and
  75      * non-NULL. For C_BOOLEAN and C_END, `sval' is always NULL.
  76      * For C_CHOICES, `sval' is non-NULL, _not_ dynamically
  77      * allocated, and contains a set of option strings separated by
  78      * a delimiter. The delimeter is also the first character in
  79      * the string, so for example ":Foo:Bar:Baz" gives three
  80      * options `Foo', `Bar' and `Baz'.
  81      */
  82     char *sval;
  83     /*
  84      * For C_BOOLEAN, this is TRUE or FALSE. For C_CHOICES, it
  85      * indicates the chosen index from the `sval' list. In the
  86      * above example, 0==Foo, 1==Bar and 2==Baz.
  87      */
  88     int ival;
  89 };
  90
  91 /*
  92  * Platform routines
  93  */
  94 void fatal(char *fmt, ...);
  95 void frontend_default_colour(frontend *fe, float *output);
  96 void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
  97                int align, int colour, char *text);
  98 void draw_rect(frontend *fe, int x, int y, int w, int h, int colour);
  99 void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour);
 100 void draw_polygon(frontend *fe, int *coords, int npoints,
 101                   int fill, int colour);
 102 void clip(frontend *fe, int x, int y, int w, int h);
 103 void unclip(frontend *fe);
 104 void start_draw(frontend *fe);
 105 void draw_update(frontend *fe, int x, int y, int w, int h);
 106 void end_draw(frontend *fe);
 107 void deactivate_timer(frontend *fe);
 108 void activate_timer(frontend *fe);
 109 void status_bar(frontend *fe, char *text);
 110 void get_random_seed(void **randseed, int *randseedsize);
 111
 112 /*
 113  * midend.c
 114  */
 115 midend_data *midend_new(frontend *fe, const game *ourgame);
 116 void midend_free(midend_data *me);
 117 void midend_set_params(midend_data *me, game_params *params);
 118 void midend_size(midend_data *me, int *x, int *y);
 119 void midend_new_game(midend_data *me);
 120 void midend_restart_game(midend_data *me);
 121 int midend_process_key(midend_data *me, int x, int y, int button);
 122 void midend_redraw(midend_data *me);
 123 float *midend_colours(midend_data *me, int *ncolours);
 124 void midend_timer(midend_data *me, float tplus);
 125 int midend_num_presets(midend_data *me);
 126 void midend_fetch_preset(midend_data *me, int n,
 127                          char **name, game_params **params);
 128 int midend_wants_statusbar(midend_data *me);
 129 enum { CFG_SETTINGS, CFG_SEED };
 130 config_item *midend_get_config(midend_data *me, int which, char **wintitle);
 131 char *midend_set_config(midend_data *me, int which, config_item *cfg);
 132 char *midend_game_id(midend_data *me, char *id, int def_seed);
 133
 134 /*
 135  * malloc.c
 136  */
 137 void *smalloc(int size);
 138 void *srealloc(void *p, int size);
 139 void sfree(void *p);
 140 char *dupstr(const char *s);
 141 #define snew(type) \
 142     ( (type *) smalloc (sizeof (type)) )
 143 #define snewn(number, type) \
 144     ( (type *) smalloc ((number) * sizeof (type)) )
 145 #define sresize(array, number, type) \
 146     ( (type *) srealloc ((array), (number) * sizeof (type)) )
 147
 148 /*
 149  * misc.c
 150  */
 151 void free_cfg(config_item *cfg);
 152
 153 /*
 154  * random.c
 155  */
 156 random_state *random_init(char *seed, int len);
 157 unsigned long random_bits(random_state *state, int bits);
 158 unsigned long random_upto(random_state *state, unsigned long limit);
 159 void random_free(random_state *state);
 160
 161 /*
 162  * Data structure containing the function calls and data specific
 163  * to a particular game. This is enclosed in a data structure so
 164  * that a particular platform can choose, if it wishes, to compile
 165  * all the games into a single combined executable rather than
 166  * having lots of little ones.
 167  */
 168 struct game {
 169     const char *name;
 170     const char *winhelp_topic;
 171     int can_configure;
 172     game_params *(*default_params)(void);
 173     int (*fetch_preset)(int i, char **name, game_params **params);
 174     game_params *(*decode_params)(char const *string);
 175     char *(*encode_params)(game_params *);
 176     void (*free_params)(game_params *params);
 177     game_params *(*dup_params)(game_params *params);
 178     config_item *(*configure)(game_params *params);
 179     game_params *(*custom_params)(config_item *cfg);
 180     char *(*validate_params)(game_params *params);
 181     char *(*new_seed)(game_params *params, random_state *rs);
 182     char *(*validate_seed)(game_params *params, char *seed);
 183     game_state *(*new_game)(game_params *params, char *seed);
 184     game_state *(*dup_game)(game_state *state);
 185     void (*free_game)(game_state *state);
 186     game_ui *(*new_ui)(game_state *state);
 187     void (*free_ui)(game_ui *ui);
 188     game_state *(*make_move)(game_state *from, game_ui *ui, int x, int y,
 189                              int button);
 190     void (*size)(game_params *params, int *x, int *y);
 191     float *(*colours)(frontend *fe, game_state *state, int *ncolours);
 192     game_drawstate *(*new_drawstate)(game_state *state);
 193     void (*free_drawstate)(game_drawstate *ds);
 194     void (*redraw)(frontend *fe, game_drawstate *ds, game_state *oldstate,
 195                    game_state *newstate, int dir, game_ui *ui, float anim_time,
 196                    float flash_time);
 197     float (*anim_length)(game_state *oldstate, game_state *newstate, int dir);
 198     float (*flash_length)(game_state *oldstate, game_state *newstate, int dir);
 199     int (*wants_statusbar)(void);
 200 };
 201
 202 /*
 203  * For one-game-at-a-time platforms, there's a single structure
 204  * like the above, under a fixed name.
 205  */
 206 #ifndef COMBINED
 207 extern const game thegame;
 208 #endif
 209
 210 #endif /* PUZZLES_PUZZLES_H */