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
  48 #define ALIGN_VNORMAL 0x000
  49 #define ALIGN_VCENTRE 0x100
  50
  51 #define ALIGN_HLEFT   0x000
  52 #define ALIGN_HCENTRE 0x001
  53 #define ALIGN_HRIGHT  0x002
  54
  55 #define FONT_FIXED    0
  56 #define FONT_VARIABLE 1
  57
  58 /*
  59  * Structure used to pass configuration data between frontend and
  60  * game
  61  */
  62 enum { C_STRING, C_CHOICES, C_BOOLEAN, C_END };
  63 struct config_item {
  64     /*
  65      * `name' is never dynamically allocated.
  66      */
  67     char *name;
  68     /*
  69      * `type' contains one of the above values.
  70      */
  71     int type;
  72     /*
  73      * For C_STRING, `sval' is always dynamically allocated and
  74      * non-NULL. For C_BOOLEAN and C_END, `sval' is always NULL.
  75      * For C_CHOICES, `sval' is non-NULL, _not_ dynamically
  76      * allocated, and contains a set of option strings separated by
  77      * a delimiter. The delimeter is also the first character in
  78      * the string, so for example ":Foo:Bar:Baz" gives three
  79      * options `Foo', `Bar' and `Baz'.
  80      */
  81     char *sval;
  82     /*
  83      * For C_BOOLEAN, this is TRUE or FALSE. For C_CHOICES, it
  84      * indicates the chosen index from the `sval' list. In the
  85      * above example, 0==Foo, 1==Bar and 2==Baz.
  86      */
  87     int ival;
  88 };
  89
  90 /*
  91  * Platform routines
  92  */
  93 void fatal(char *fmt, ...);
  94 void frontend_default_colour(frontend *fe, float *output);
  95 void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
  96                int align, int colour, char *text);
  97 void draw_rect(frontend *fe, int x, int y, int w, int h, int colour);
  98 void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour);
  99 void draw_polygon(frontend *fe, int *coords, int npoints,
 100                   int fill, int colour);
 101 void clip(frontend *fe, int x, int y, int w, int h);
 102 void unclip(frontend *fe);
 103 void start_draw(frontend *fe);
 104 void draw_update(frontend *fe, int x, int y, int w, int h);
 105 void end_draw(frontend *fe);
 106 void deactivate_timer(frontend *fe);
 107 void activate_timer(frontend *fe);
 108 void status_bar(frontend *fe, char *text);
 109 void get_random_seed(void **randseed, int *randseedsize);
 110
 111 /*
 112  * midend.c
 113  */
 114 midend_data *midend_new(frontend *fe);
 115 void midend_free(midend_data *me);
 116 void midend_set_params(midend_data *me, game_params *params);
 117 void midend_size(midend_data *me, int *x, int *y);
 118 void midend_new_game(midend_data *me);
 119 void midend_restart_game(midend_data *me);
 120 int midend_process_key(midend_data *me, int x, int y, int button);
 121 void midend_redraw(midend_data *me);
 122 float *midend_colours(midend_data *me, int *ncolours);
 123 void midend_timer(midend_data *me, float tplus);
 124 int midend_num_presets(midend_data *me);
 125 void midend_fetch_preset(midend_data *me, int n,
 126                          char **name, game_params **params);
 127 int midend_wants_statusbar(midend_data *me);
 128 enum { CFG_SETTINGS, CFG_SEED };
 129 config_item *midend_get_config(midend_data *me, int which, char **wintitle);
 130 char *midend_set_config(midend_data *me, int which, config_item *cfg);
 131 char *midend_game_id(midend_data *me, char *id, int def_seed);
 132
 133 /*
 134  * malloc.c
 135  */
 136 void *smalloc(int size);
 137 void *srealloc(void *p, int size);
 138 void sfree(void *p);
 139 char *dupstr(const char *s);
 140 #define snew(type) \
 141     ( (type *) smalloc (sizeof (type)) )
 142 #define snewn(number, type) \
 143     ( (type *) smalloc ((number) * sizeof (type)) )
 144 #define sresize(array, number, type) \
 145     ( (type *) srealloc ((array), (number) * sizeof (type)) )
 146
 147 /*
 148  * misc.c
 149  */
 150 void free_cfg(config_item *cfg);
 151
 152 /*
 153  * random.c
 154  */
 155 random_state *random_init(char *seed, int len);
 156 unsigned long random_bits(random_state *state, int bits);
 157 unsigned long random_upto(random_state *state, unsigned long limit);
 158 void random_free(random_state *state);
 159
 160 /*
 161  * Game-specific routines
 162  */
 163 extern const char *const game_name;
 164 extern const char *const game_winhelp_topic;
 165 const int game_can_configure;
 166 game_params *default_params(void);
 167 int game_fetch_preset(int i, char **name, game_params **params);
 168 game_params *decode_params(char const *string);
 169 char *encode_params(game_params *);
 170 void free_params(game_params *params);
 171 game_params *dup_params(game_params *params);
 172 config_item *game_configure(game_params *params);
 173 game_params *custom_params(config_item *cfg);
 174 char *validate_params(game_params *params);
 175 char *new_game_seed(game_params *params, random_state *rs);
 176 char *validate_seed(game_params *params, char *seed);
 177 game_state *new_game(game_params *params, char *seed);
 178 game_state *dup_game(game_state *state);
 179 void free_game(game_state *state);
 180 game_ui *new_ui(game_state *state);
 181 void free_ui(game_ui *ui);
 182 game_state *make_move(game_state *from, game_ui *ui, int x, int y, int button);
 183 void game_size(game_params *params, int *x, int *y);
 184 float *game_colours(frontend *fe, game_state *state, int *ncolours);
 185 game_drawstate *game_new_drawstate(game_state *state);
 186 void game_free_drawstate(game_drawstate *ds);
 187 void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
 188                  game_state *newstate, int dir, game_ui *ui, float anim_time,
 189                  float flash_time);
 190 float game_anim_length(game_state *oldstate, game_state *newstate, int dir);
 191 float game_flash_length(game_state *oldstate, game_state *newstate, int dir);
 192 int game_wants_statusbar(void);
 193
 194 #endif /* PUZZLES_PUZZLES_H */