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