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

   1 /*
   2  * nullgame.c [FIXME]: Template defining the null game (in which no
   3  * moves are permitted and nothing is ever drawn). This file exists
   4  * solely as a basis for constructing new game definitions - it
   5  * helps to have something which will compile from the word go and
   6  * merely doesn't _do_ very much yet.
   7  *
   8  * Parts labelled FIXME actually want _removing_ (e.g. the dummy
   9  * field in each of the required data structures, and this entire
  10  * comment itself) when converting this source file into one
  11  * describing a real game.
  12  */
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <string.h>
  17 #include <assert.h>
  18 #include <ctype.h>
  19 #include <math.h>
  20
  21 #include "puzzles.h"
  22
  23 enum {
  24     COL_BACKGROUND,
  25     NCOLOURS
  26 };
  27
  28 struct game_params {
  29     int FIXME;
  30 };
  31
  32 struct game_state {
  33     int FIXME;
  34 };
  35
  36 static game_params *default_params(void)
  37 {
  38     game_params *ret = snew(game_params);
  39
  40     ret->FIXME = 0;
  41
  42     return ret;
  43 }
  44
  45 static int game_fetch_preset(int i, char **name, game_params **params)
  46 {
  47     return FALSE;
  48 }
  49
  50 static void free_params(game_params *params)
  51 {
  52     sfree(params);
  53 }
  54
  55 static game_params *dup_params(game_params *params)
  56 {
  57     game_params *ret = snew(game_params);
  58     *ret = *params;                    /* structure copy */
  59     return ret;
  60 }
  61
  62 static game_params *decode_params(char const *string)
  63 {
  64     game_params *ret = snew(game_params);
  65
  66     ret->FIXME = 0;
  67
  68     return ret;
  69 }
  70
  71 static char *encode_params(game_params *params)
  72 {
  73     return dupstr("FIXME");
  74 }
  75
  76 static config_item *game_configure(game_params *params)
  77 {
  78     return NULL;
  79 }
  80
  81 static game_params *custom_params(config_item *cfg)
  82 {
  83     return NULL;
  84 }
  85
  86 static char *validate_params(game_params *params)
  87 {
  88     return NULL;
  89 }
  90
  91 static char *new_game_seed(game_params *params, random_state *rs)
  92 {
  93     return dupstr("FIXME");
  94 }
  95
  96 static char *validate_seed(game_params *params, char *seed)
  97 {
  98     return NULL;
  99 }
 100
 101 static game_state *new_game(game_params *params, char *seed)
 102 {
 103     game_state *state = snew(game_state);
 104
 105     state->FIXME = 0;
 106
 107     return state;
 108 }
 109
 110 static game_state *dup_game(game_state *state)
 111 {
 112     game_state *ret = snew(game_state);
 113
 114     ret->FIXME = state->FIXME;
 115
 116     return ret;
 117 }
 118
 119 static void free_game(game_state *state)
 120 {
 121     sfree(state);
 122 }
 123
 124 static char *game_text_format(game_state *state)
 125 {
 126     return NULL;
 127 }
 128
 129 static game_ui *new_ui(game_state *state)
 130 {
 131     return NULL;
 132 }
 133
 134 static void free_ui(game_ui *ui)
 135 {
 136 }
 137
 138 static game_state *make_move(game_state *from, game_ui *ui, int x, int y,
 139                              int button)
 140 {
 141     return NULL;
 142 }
 143
 144 /* ----------------------------------------------------------------------
 145  * Drawing routines.
 146  */
 147
 148 struct game_drawstate {
 149     int FIXME;
 150 };
 151
 152 static void game_size(game_params *params, int *x, int *y)
 153 {
 154     *x = *y = 200;                     /* FIXME */
 155 }
 156
 157 static float *game_colours(frontend *fe, game_state *state, int *ncolours)
 158 {
 159     float *ret = snewn(3 * NCOLOURS, float);
 160
 161     frontend_default_colour(fe, &ret[COL_BACKGROUND * 3]);
 162
 163     *ncolours = NCOLOURS;
 164     return ret;
 165 }
 166
 167 static game_drawstate *game_new_drawstate(game_state *state)
 168 {
 169     struct game_drawstate *ds = snew(struct game_drawstate);
 170
 171     ds->FIXME = 0;
 172
 173     return ds;
 174 }
 175
 176 static void game_free_drawstate(game_drawstate *ds)
 177 {
 178     sfree(ds);
 179 }
 180
 181 static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
 182                         game_state *state, int dir, game_ui *ui,
 183                         float animtime, float flashtime)
 184 {
 185     /*
 186      * The initial contents of the window are not guaranteed and
 187      * can vary with front ends. To be on the safe side, all games
 188      * should start by drawing a big background-colour rectangle
 189      * covering the whole window.
 190      */
 191     draw_rect(fe, 0, 0, 200, 200, COL_BACKGROUND);
 192 }
 193
 194 static float game_anim_length(game_state *oldstate, game_state *newstate,
 195                               int dir)
 196 {
 197     return 0.0F;
 198 }
 199
 200 static float game_flash_length(game_state *oldstate, game_state *newstate,
 201                                int dir)
 202 {
 203     return 0.0F;
 204 }
 205
 206 static int game_wants_statusbar(void)
 207 {
 208     return FALSE;
 209 }
 210
 211 #ifdef COMBINED
 212 #define thegame nullgame
 213 #endif
 214
 215 const struct game thegame = {
 216     "Null Game", NULL,
 217     default_params,
 218     game_fetch_preset,
 219     decode_params,
 220     encode_params,
 221     free_params,
 222     dup_params,
 223     FALSE, game_configure, custom_params,
 224     validate_params,
 225     new_game_seed,
 226     validate_seed,
 227     new_game,
 228     dup_game,
 229     free_game,
 230     FALSE, game_text_format,
 231     new_ui,
 232     free_ui,
 233     make_move,
 234     game_size,
 235     game_colours,
 236     game_new_drawstate,
 237     game_free_drawstate,
 238     game_redraw,
 239     game_anim_length,
 240     game_flash_length,
 241     game_wants_statusbar,
 242 };