nestedvm.c

   1 /*
   2  * nestedvm.c: NestedVM front end for my puzzle collection.
   3  */
   4
   5 #include <stdio.h>
   6 #include <assert.h>
   7 #include <stdlib.h>
   8 #include <time.h>
   9 #include <stdarg.h>
  10 #include <string.h>
  11 #include <errno.h>
  12
  13 #include <sys/time.h>
  14
  15 #include "puzzles.h"
  16
  17 extern void _pause();
  18 extern int _call_java(int cmd, int arg1, int arg2, int arg3);
  19
  20 void fatal(char *fmt, ...)
  21 {
  22     va_list ap;
  23     fprintf(stderr, "fatal error: ");
  24     va_start(ap, fmt);
  25     vfprintf(stderr, fmt, ap);
  26     va_end(ap);
  27     fprintf(stderr, "\n");
  28     exit(1);
  29 }
  30
  31 struct frontend {
  32     // TODO kill unneeded members!
  33     midend *me;
  34     int timer_active;
  35     struct timeval last_time;
  36     config_item *cfg;
  37     int cfg_which, cfgret;
  38     int ox, oy, w, h;
  39 };
  40
  41 static frontend *_fe;
  42
  43 void get_random_seed(void **randseed, int *randseedsize)
  44 {
  45     struct timeval *tvp = snew(struct timeval);
  46     gettimeofday(tvp, NULL);
  47     *randseed = (void *)tvp;
  48     *randseedsize = sizeof(struct timeval);
  49 }
  50
  51 void frontend_default_colour(frontend *fe, float *output)
  52 {
  53     output[0] = output[1]= output[2] = 0.8f;
  54 }
  55
  56 void nestedvm_status_bar(void *handle, char *text)
  57 {
  58     _call_java(4,0,(int)text,0);
  59 }
  60
  61 void nestedvm_start_draw(void *handle)
  62 {
  63     frontend *fe = (frontend *)handle;
  64     _call_java(5, 0, fe->w, fe->h);
  65     _call_java(4, 1, fe->ox, fe->oy);
  66 }
  67
  68 void nestedvm_clip(void *handle, int x, int y, int w, int h)
  69 {
  70     frontend *fe = (frontend *)handle;
  71     _call_java(5, w, h, 0);
  72     _call_java(4, 3, x + fe->ox, y + fe->oy);
  73 }
  74
  75 void nestedvm_unclip(void *handle)
  76 {
  77     frontend *fe = (frontend *)handle;
  78     _call_java(4, 4, fe->ox, fe->oy);
  79 }
  80
  81 void nestedvm_draw_text(void *handle, int x, int y, int fonttype, int fontsize,
  82                    int align, int colour, char *text)
  83 {
  84     frontend *fe = (frontend *)handle;
  85     _call_java(5, x + fe->ox, y + fe->oy,
  86                (fonttype == FONT_FIXED ? 0x10 : 0x0) | align);
  87     _call_java(7, fontsize, colour, (int)text);
  88 }
  89
  90 void nestedvm_draw_rect(void *handle, int x, int y, int w, int h, int colour)
  91 {
  92     frontend *fe = (frontend *)handle;
  93     _call_java(5, w, h, colour);
  94     _call_java(4, 5, x + fe->ox, y + fe->oy);
  95 }
  96
  97 void nestedvm_draw_line(void *handle, int x1, int y1, int x2, int y2,
  98                         int colour)
  99 {
 100     frontend *fe = (frontend *)handle;
 101     _call_java(5, x2 + fe->ox, y2 + fe->oy, colour);
 102     _call_java(4, 6, x1 + fe->ox, y1 + fe->oy);
 103 }
 104
 105 void nestedvm_draw_poly(void *handle, int *coords, int npoints,
 106                         int fillcolour, int outlinecolour)
 107 {
 108     frontend *fe = (frontend *)handle;
 109     int i;
 110     _call_java(4, 7, npoints, 0);
 111     for (i = 0; i < npoints; i++) {
 112         _call_java(6, i, coords[i*2] + fe->ox, coords[i*2+1] + fe->oy);
 113     }
 114     _call_java(4, 8, outlinecolour, fillcolour);
 115 }
 116
 117 void nestedvm_draw_circle(void *handle, int cx, int cy, int radius,
 118                      int fillcolour, int outlinecolour)
 119 {
 120     frontend *fe = (frontend *)handle;
 121     _call_java(5, cx+fe->ox, cy+fe->oy, radius);
 122     _call_java(4, 9, outlinecolour, fillcolour);
 123 }
 124
 125 struct blitter {
 126     int handle, w, h, x, y;
 127 };
 128
 129 blitter *nestedvm_blitter_new(void *handle, int w, int h)
 130 {
 131     blitter *bl = snew(blitter);
 132     bl->handle = -1;
 133     bl->w = w;
 134     bl->h = h;
 135     return bl;
 136 }
 137
 138 void nestedvm_blitter_free(void *handle, blitter *bl)
 139 {
 140     if (bl->handle != -1)
 141         _call_java(4, 11, bl->handle, 0);
 142     sfree(bl);
 143 }
 144
 145 void nestedvm_blitter_save(void *handle, blitter *bl, int x, int y)
 146 {
 147     frontend *fe = (frontend *)handle;
 148     if (bl->handle == -1)
 149         bl->handle = _call_java(4,10,bl->w, bl->h);
 150     bl->x = x;
 151     bl->y = y;
 152     _call_java(8, bl->handle, x + fe->ox, y + fe->oy);
 153 }
 154
 155 void nestedvm_blitter_load(void *handle, blitter *bl, int x, int y)
 156 {
 157     frontend *fe = (frontend *)handle;
 158     assert(bl->handle != -1);
 159     if (x == BLITTER_FROMSAVED && y == BLITTER_FROMSAVED) {
 160         x = bl->x;
 161         y = bl->y;
 162     }
 163     _call_java(9, bl->handle, x + fe->ox, y + fe->oy);
 164 }
 165
 166 void nestedvm_end_draw(void *handle)
 167 {
 168     _call_java(4,2,0,0);
 169 }
 170
 171 char *nestedvm_text_fallback(void *handle, const char *const *strings,
 172                              int nstrings)
 173 {
 174     /*
 175      * We assume Java can cope with any UTF-8 likely to be emitted
 176      * by a puzzle.
 177      */
 178     return dupstr(strings[0]);
 179 }
 180
 181 const struct drawing_api nestedvm_drawing = {
 182     nestedvm_draw_text,
 183     nestedvm_draw_rect,
 184     nestedvm_draw_line,
 185     nestedvm_draw_poly,
 186     nestedvm_draw_circle,
 187     NULL, // draw_update,
 188     nestedvm_clip,
 189     nestedvm_unclip,
 190     nestedvm_start_draw,
 191     nestedvm_end_draw,
 192     nestedvm_status_bar,
 193     nestedvm_blitter_new,
 194     nestedvm_blitter_free,
 195     nestedvm_blitter_save,
 196     nestedvm_blitter_load,
 197     NULL, NULL, NULL, NULL, NULL, NULL, /* {begin,end}_{doc,page,puzzle} */
 198     NULL, NULL,                        /* line_width, line_dotted */
 199     nestedvm_text_fallback,
 200 };
 201
 202 int jcallback_key_event(int x, int y, int keyval)
 203 {
 204     frontend *fe = (frontend *)_fe;
 205     if (fe->ox == -1)
 206         return 1;
 207     if (keyval >= 0 &&
 208         !midend_process_key(fe->me, x - fe->ox, y - fe->oy, keyval))
 209         return 42;
 210     return 1;
 211 }
 212
 213 int jcallback_resize(int width, int height)
 214 {
 215     frontend *fe = (frontend *)_fe;
 216     int x, y;
 217     x = width;
 218     y = height;
 219     midend_size(fe->me, &x, &y, TRUE);
 220     fe->ox = (width - x) / 2;
 221     fe->oy = (height - y) / 2;
 222     fe->w = x;
 223     fe->h = y;
 224     midend_force_redraw(fe->me);
 225     return 0;
 226 }
 227
 228 int jcallback_timer_func()
 229 {
 230     frontend *fe = (frontend *)_fe;
 231     if (fe->timer_active) {
 232         struct timeval now;
 233         float elapsed;
 234         gettimeofday(&now, NULL);
 235         elapsed = ((now.tv_usec - fe->last_time.tv_usec) * 0.000001F +
 236                    (now.tv_sec - fe->last_time.tv_sec));
 237         midend_timer(fe->me, elapsed);  /* may clear timer_active */
 238         fe->last_time = now;
 239     }
 240     return fe->timer_active;
 241 }
 242
 243 void deactivate_timer(frontend *fe)
 244 {
 245     if (fe->timer_active)
 246         _call_java(4, 13, 0, 0);
 247     fe->timer_active = FALSE;
 248 }
 249
 250 void activate_timer(frontend *fe)
 251 {
 252     if (!fe->timer_active) {
 253         _call_java(4, 12, 0, 0);
 254         gettimeofday(&fe->last_time, NULL);
 255     }
 256     fe->timer_active = TRUE;
 257 }
 258
 259 void jcallback_config_ok()
 260 {
 261     frontend *fe = (frontend *)_fe;
 262     char *err;
 263
 264     err = midend_set_config(fe->me, fe->cfg_which, fe->cfg);
 265
 266     if (err)
 267         _call_java(2, (int) "Error", (int)err, 1);
 268     else {
 269         fe->cfgret = TRUE;
 270     }
 271 }
 272
 273 void jcallback_config_set_string(int item_ptr, int char_ptr) {
 274     config_item *i = (config_item *)item_ptr;
 275     char* newval = (char*) char_ptr;
 276     sfree(i->sval);
 277     i->sval = dupstr(newval);
 278     free(newval);
 279 }
 280
 281 void jcallback_config_set_boolean(int item_ptr, int selected) {
 282     config_item *i = (config_item *)item_ptr;
 283     i->ival = selected != 0 ? TRUE : FALSE;
 284 }
 285
 286 void jcallback_config_set_choice(int item_ptr, int selected) {
 287     config_item *i = (config_item *)item_ptr;
 288     i->ival = selected;
 289 }
 290
 291 static int get_config(frontend *fe, int which)
 292 {
 293     char *title;
 294     config_item *i;
 295     fe->cfg = midend_get_config(fe->me, which, &title);
 296     fe->cfg_which = which;
 297     fe->cfgret = FALSE;
 298     _call_java(10, (int)title, 0, 0);
 299     for (i = fe->cfg; i->type != C_END; i++) {
 300         _call_java(5, (int)i, i->type, (int)i->name);
 301         _call_java(11, (int)i->sval, i->ival, 0);
 302     }
 303     _call_java(12,0,0,0);
 304     free_cfg(fe->cfg);
 305     return fe->cfgret;
 306 }
 307
 308 int jcallback_menu_key_event(int key)
 309 {
 310     frontend *fe = (frontend *)_fe;
 311     if (!midend_process_key(fe->me, 0, 0, key))
 312         return 42;
 313     return 0;
 314 }
 315
 316 static void resize_fe(frontend *fe)
 317 {
 318     int x, y;
 319
 320     x = INT_MAX;
 321     y = INT_MAX;
 322     midend_size(fe->me, &x, &y, FALSE);
 323     _call_java(3, x, y, 0);
 324 }
 325
 326 int jcallback_preset_event(int ptr_game_params)
 327 {
 328     frontend *fe = (frontend *)_fe;
 329     game_params *params =
 330         (game_params *)ptr_game_params;
 331
 332     midend_set_params(fe->me, params);
 333     midend_new_game(fe->me);
 334     resize_fe(fe);
 335     _call_java(13, midend_which_preset(fe->me), 0, 0);
 336     return 0;
 337 }
 338
 339 int jcallback_solve_event()
 340 {
 341     frontend *fe = (frontend *)_fe;
 342     char *msg;
 343
 344     msg = midend_solve(fe->me);
 345
 346     if (msg)
 347         _call_java(2, (int) "Error", (int)msg, 1);
 348     return 0;
 349 }
 350
 351 int jcallback_restart_event()
 352 {
 353     frontend *fe = (frontend *)_fe;
 354
 355     midend_restart_game(fe->me);
 356     return 0;
 357 }
 358
 359 int jcallback_config_event(int which)
 360 {
 361     frontend *fe = (frontend *)_fe;
 362     _call_java(13, midend_which_preset(fe->me), 0, 0);
 363     if (!get_config(fe, which))
 364         return 0;
 365     midend_new_game(fe->me);
 366     resize_fe(fe);
 367     _call_java(13, midend_which_preset(fe->me), 0, 0);
 368     return 0;
 369 }
 370
 371 int jcallback_about_event()
 372 {
 373     char titlebuf[256];
 374     char textbuf[1024];
 375
 376     sprintf(titlebuf, "About %.200s", thegame.name);
 377     sprintf(textbuf,
 378             "%.200s\n\n"
 379             "from Simon Tatham's Portable Puzzle Collection\n\n"
 380             "%.500s", thegame.name, ver);
 381     _call_java(2, (int)&titlebuf, (int)&textbuf, 0);
 382     return 0;
 383 }
 384
 385 int main(int argc, char **argv)
 386 {
 387     int i, n;
 388     float* colours;
 389
 390     _fe = snew(frontend);
 391     _fe->timer_active = FALSE;
 392     _fe->me = midend_new(_fe, &thegame, &nestedvm_drawing, _fe);
 393     if (argc > 1)
 394         midend_game_id(_fe->me, argv[1]);   /* ignore failure */
 395     midend_new_game(_fe->me);
 396
 397     if ((n = midend_num_presets(_fe->me)) > 0) {
 398         int i;
 399         for (i = 0; i < n; i++) {
 400             char *name;
 401             game_params *params;
 402             midend_fetch_preset(_fe->me, i, &name, &params);
 403             _call_java(1, (int)name, (int)params, 0);
 404         }
 405     }
 406
 407     colours = midend_colours(_fe->me, &n);
 408     _fe->ox = -1;
 409
 410     _call_java(0, (int)thegame.name,
 411                (thegame.can_configure ? 1 : 0) |
 412                (midend_wants_statusbar(_fe->me) ? 2 : 0) |
 413                (thegame.can_solve ? 4 : 0), n);
 414     for (i = 0; i < n; i++) {
 415         _call_java(1024+ i,
 416                    (int)(colours[i*3] * 0xFF),
 417                    (int)(colours[i*3+1] * 0xFF),
 418                    (int)(colours[i*3+2] * 0xFF));
 419     }
 420     resize_fe(_fe);
 421
 422     _call_java(13, midend_which_preset(_fe->me), 0, 0);
 423
 424     // Now pause the vm. The VM will be call()ed when
 425     // an input event occurs.
 426     _pause();
 427
 428     // shut down when the VM is resumed.
 429     deactivate_timer(_fe);
 430     midend_free(_fe->me);
 431     return 0;
 432 }