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                            game_aux_info **aux)
  93 {
  94     return dupstr("FIXME");
  95 }
  96
  97 void game_free_aux_info(game_aux_info *aux)
  98 {
  99     assert(!"Shouldn't happen");
 100 }
 101
 102 static char *validate_seed(game_params *params, char *seed)
 103 {
 104     return NULL;
 105 }
 106
 107 static game_state *new_game(game_params *params, char *seed)
 108 {
 109     game_state *state = snew(game_state);
 110
 111     state->FIXME = 0;
 112
 113     return state;
 114 }
 115
 116 static game_state *dup_game(game_state *state)
 117 {
 118     game_state *ret = snew(game_state);
 119
 120     ret->FIXME = state->FIXME;
 121
 122     return ret;
 123 }
 124
 125 static void free_game(game_state *state)
 126 {
 127     sfree(state);
 128 }
 129
 130 static char *game_text_format(game_state *state)
 131 {
 132     return NULL;
 133 }
 134
 135 static game_ui *new_ui(game_state *state)
 136 {
 137     return NULL;
 138 }
 139
 140 static void free_ui(game_ui *ui)
 141 {
 142 }
 143
 144 static game_state *make_move(game_state *from, game_ui *ui, int x, int y,
 145                              int button)
 146 {
 147     return NULL;
 148 }
 149
 150 /* ----------------------------------------------------------------------
 151  * Drawing routines.
 152  */
 153
 154 struct game_drawstate {
 155     int FIXME;
 156 };
 157
 158 static void game_size(game_params *params, int *x, int *y)
 159 {
 160     *x = *y = 200;                     /* FIXME */
 161 }
 162
 163 static float *game_colours(frontend *fe, game_state *state, int *ncolours)
 164 {
 165     float *ret = snewn(3 * NCOLOURS, float);
 166
 167     frontend_default_colour(fe, &ret[COL_BACKGROUND * 3]);
 168
 169     *ncolours = NCOLOURS;
 170     return ret;
 171 }
 172
 173 static game_drawstate *game_new_drawstate(game_state *state)
 174 {
 175     struct game_drawstate *ds = snew(struct game_drawstate);
 176
 177     ds->FIXME = 0;
 178
 179     return ds;
 180 }
 181
 182 static void game_free_drawstate(game_drawstate *ds)
 183 {
 184     sfree(ds);
 185 }
 186
 187 static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
 188                         game_state *state, int dir, game_ui *ui,
 189                         float animtime, float flashtime)
 190 {
 191     /*
 192      * The initial contents of the window are not guaranteed and
 193      * can vary with front ends. To be on the safe side, all games
 194      * should start by drawing a big background-colour rectangle
 195      * covering the whole window.
 196      */
 197     draw_rect(fe, 0, 0, 200, 200, COL_BACKGROUND);
 198 }
 199
 200 static float game_anim_length(game_state *oldstate, game_state *newstate,
 201                               int dir)
 202 {
 203     return 0.0F;
 204 }
 205
 206 static float game_flash_length(game_state *oldstate, game_state *newstate,
 207                                int dir)
 208 {
 209     return 0.0F;
 210 }
 211
 212 static int game_wants_statusbar(void)
 213 {
 214     return FALSE;
 215 }
 216
 217 #ifdef COMBINED
 218 #define thegame nullgame
 219 #endif
 220
 221 const struct game thegame = {
 222     "Null Game", NULL,
 223     default_params,
 224     game_fetch_preset,
 225     decode_params,
 226     encode_params,
 227     free_params,
 228     dup_params,
 229     FALSE, game_configure, custom_params,
 230     validate_params,
 231     new_game_seed,
 232     game_free_aux_info,
 233     validate_seed,
 234     new_game,
 235     dup_game,
 236     free_game,
 237     FALSE, game_text_format,
 238     new_ui,
 239     free_ui,
 240     make_move,
 241     game_size,
 242     game_colours,
 243     game_new_drawstate,
 244     game_free_drawstate,
 245     game_redraw,
 246     game_anim_length,
 247     game_flash_length,
 248     game_wants_statusbar,
 249 };