720a8fb7 |
1 | /* |
2 | * midend.c: general middle fragment sitting between the |
3 | * platform-specific front end and game-specific back end. |
4 | * Maintains a move list, takes care of Undo and Redo commands, and |
7f89707c |
5 | * processes standard keystrokes for undo/redo/new/quit. |
720a8fb7 |
6 | */ |
7f77ea24 |
7 | |
8 | #include <stdio.h> |
5928817c |
9 | #include <string.h> |
7f77ea24 |
10 | #include <assert.h> |
813593cc |
11 | #include <stdlib.h> |
12 | #include <ctype.h> |
7f77ea24 |
13 | |
14 | #include "puzzles.h" |
15 | |
1185e3c5 |
16 | enum { DEF_PARAMS, DEF_SEED, DEF_DESC }; /* for midend_game_id_int */ |
17 | |
a4393230 |
18 | enum { NEWGAME, MOVE, SOLVE, RESTART };/* for midend_state_entry.movetype */ |
19 | |
20 | #define special(type) ( (type) != MOVE ) |
21 | |
28d0118c |
22 | struct midend_state_entry { |
23 | game_state *state; |
a4393230 |
24 | char *movestr; |
25 | int movetype; |
28d0118c |
26 | }; |
27 | |
dafd6cf6 |
28 | struct midend { |
2ef96bd6 |
29 | frontend *frontend; |
48d70ca9 |
30 | random_state *random; |
be8d5aa1 |
31 | const game *ourgame; |
48d70ca9 |
32 | |
a4393230 |
33 | game_params **presets; |
34 | char **preset_names; |
35 | int npresets, presetsize; |
36 | |
0a6892db |
37 | /* |
38 | * `desc' and `privdesc' deserve a comment. |
39 | * |
40 | * `desc' is the game description as presented to the user when |
41 | * they ask for Game -> Specific. `privdesc', if non-NULL, is a |
42 | * different game description used to reconstruct the initial |
43 | * game_state when de-serialising. If privdesc is NULL, `desc' |
44 | * is used for both. |
45 | * |
46 | * For almost all games, `privdesc' is NULL and never used. The |
47 | * exception (as usual) is Mines: the initial game state has no |
48 | * squares open at all, but after the first click `desc' is |
49 | * rewritten to describe a game state with an initial click and |
50 | * thus a bunch of squares open. If we used that desc to |
51 | * serialise and deserialise, then the initial game state after |
52 | * deserialisation would look unlike the initial game state |
53 | * beforehand, and worse still execute_move() might fail on the |
54 | * attempted first click. So `privdesc' is also used in this |
55 | * case, to provide a game description describing the same |
56 | * fixed mine layout _but_ no initial click. (These game IDs |
57 | * may also be typed directly into Mines if you like.) |
58 | */ |
59 | char *desc, *privdesc, *seedstr; |
c566778e |
60 | char *aux_info; |
1185e3c5 |
61 | enum { GOT_SEED, GOT_DESC, GOT_NOTHING } genmode; |
eb2ad6f1 |
62 | |
a4393230 |
63 | int nstates, statesize, statepos; |
64 | struct midend_state_entry *states; |
eb2ad6f1 |
65 | |
f60f7e7c |
66 | game_params *params, *curparams; |
2ef96bd6 |
67 | game_drawstate *drawstate; |
74a4e547 |
68 | game_ui *ui; |
a4393230 |
69 | |
70 | game_state *oldstate; |
2ef96bd6 |
71 | float anim_time, anim_pos; |
87ed82be |
72 | float flash_time, flash_pos; |
c822de4a |
73 | int dir; |
6776a950 |
74 | |
48dcdd62 |
75 | int timing; |
76 | float elapsed; |
77 | char *laststatus; |
78 | |
dafd6cf6 |
79 | drawing *drawing; |
80 | |
6776a950 |
81 | int pressed_mouse_button; |
1e3e152d |
82 | |
83134cff |
83 | int preferred_tilesize, tilesize, winwidth, winheight; |
7f77ea24 |
84 | }; |
85 | |
86 | #define ensure(me) do { \ |
87 | if ((me)->nstates >= (me)->statesize) { \ |
88 | (me)->statesize = (me)->nstates + 128; \ |
28d0118c |
89 | (me)->states = sresize((me)->states, (me)->statesize, \ |
90 | struct midend_state_entry); \ |
7f77ea24 |
91 | } \ |
92 | } while (0) |
93 | |
dafd6cf6 |
94 | midend *midend_new(frontend *fe, const game *ourgame, |
95 | const drawing_api *drapi, void *drhandle) |
7f77ea24 |
96 | { |
dafd6cf6 |
97 | midend *me = snew(midend); |
cbb5549e |
98 | void *randseed; |
99 | int randseedsize; |
100 | |
101 | get_random_seed(&randseed, &randseedsize); |
7f77ea24 |
102 | |
48d70ca9 |
103 | me->frontend = fe; |
be8d5aa1 |
104 | me->ourgame = ourgame; |
1fbb0680 |
105 | me->random = random_new(randseed, randseedsize); |
7f77ea24 |
106 | me->nstates = me->statesize = me->statepos = 0; |
107 | me->states = NULL; |
be8d5aa1 |
108 | me->params = ourgame->default_params(); |
f60f7e7c |
109 | me->curparams = NULL; |
0a6892db |
110 | me->desc = me->privdesc = NULL; |
1185e3c5 |
111 | me->seedstr = NULL; |
6f2d8d7c |
112 | me->aux_info = NULL; |
1185e3c5 |
113 | me->genmode = GOT_NOTHING; |
2ef96bd6 |
114 | me->drawstate = NULL; |
115 | me->oldstate = NULL; |
eb2ad6f1 |
116 | me->presets = NULL; |
117 | me->preset_names = NULL; |
118 | me->npresets = me->presetsize = 0; |
87ed82be |
119 | me->anim_time = me->anim_pos = 0.0F; |
120 | me->flash_time = me->flash_pos = 0.0F; |
c822de4a |
121 | me->dir = 0; |
74a4e547 |
122 | me->ui = NULL; |
6776a950 |
123 | me->pressed_mouse_button = 0; |
48dcdd62 |
124 | me->laststatus = NULL; |
125 | me->timing = FALSE; |
126 | me->elapsed = 0.0F; |
1f3ee4ee |
127 | me->tilesize = me->winwidth = me->winheight = 0; |
dafd6cf6 |
128 | if (drapi) |
83c0438f |
129 | me->drawing = drawing_new(drapi, me, drhandle); |
dafd6cf6 |
130 | else |
131 | me->drawing = NULL; |
7f77ea24 |
132 | |
83134cff |
133 | me->preferred_tilesize = ourgame->preferred_tilesize; |
134 | { |
135 | /* |
136 | * Allow an environment-based override for the default tile |
137 | * size by defining a variable along the lines of |
138 | * `NET_TILESIZE=15'. |
139 | */ |
140 | |
141 | char buf[80], *e; |
142 | int j, k, ts; |
143 | |
144 | sprintf(buf, "%s_TILESIZE", me->ourgame->name); |
145 | for (j = k = 0; buf[j]; j++) |
146 | if (!isspace((unsigned char)buf[j])) |
147 | buf[k++] = toupper((unsigned char)buf[j]); |
148 | buf[k] = '\0'; |
149 | if ((e = getenv(buf)) != NULL && sscanf(e, "%d", &ts) == 1 && ts > 0) |
150 | me->preferred_tilesize = ts; |
151 | } |
152 | |
cbb5549e |
153 | sfree(randseed); |
154 | |
7f77ea24 |
155 | return me; |
156 | } |
157 | |
dafd6cf6 |
158 | static void midend_free_game(midend *me) |
ab53eb64 |
159 | { |
a4393230 |
160 | while (me->nstates > 0) { |
161 | me->nstates--; |
162 | me->ourgame->free_game(me->states[me->nstates].state); |
163 | sfree(me->states[me->nstates].movestr); |
164 | } |
ab53eb64 |
165 | |
166 | if (me->drawstate) |
dafd6cf6 |
167 | me->ourgame->free_drawstate(me->drawing, me->drawstate); |
ab53eb64 |
168 | } |
169 | |
dafd6cf6 |
170 | void midend_free(midend *me) |
7f77ea24 |
171 | { |
ab53eb64 |
172 | int i; |
173 | |
174 | midend_free_game(me); |
175 | |
dafd6cf6 |
176 | if (me->drawing) |
177 | drawing_free(me->drawing); |
ab53eb64 |
178 | random_free(me->random); |
7f77ea24 |
179 | sfree(me->states); |
1185e3c5 |
180 | sfree(me->desc); |
871bf294 |
181 | sfree(me->privdesc); |
1185e3c5 |
182 | sfree(me->seedstr); |
c566778e |
183 | sfree(me->aux_info); |
be8d5aa1 |
184 | me->ourgame->free_params(me->params); |
ab53eb64 |
185 | if (me->npresets) { |
186 | for (i = 0; i < me->npresets; i++) { |
187 | sfree(me->presets[i]); |
188 | sfree(me->preset_names[i]); |
189 | } |
190 | sfree(me->presets); |
191 | sfree(me->preset_names); |
192 | } |
193 | if (me->ui) |
194 | me->ourgame->free_ui(me->ui); |
f60f7e7c |
195 | if (me->curparams) |
196 | me->ourgame->free_params(me->curparams); |
48dcdd62 |
197 | sfree(me->laststatus); |
7f77ea24 |
198 | sfree(me); |
199 | } |
200 | |
dafd6cf6 |
201 | static void midend_size_new_drawstate(midend *me) |
1f3ee4ee |
202 | { |
203 | /* |
204 | * Don't even bother, if we haven't worked out our tile size |
205 | * anyway yet. |
206 | */ |
207 | if (me->tilesize > 0) { |
208 | me->ourgame->compute_size(me->params, me->tilesize, |
209 | &me->winwidth, &me->winheight); |
dafd6cf6 |
210 | me->ourgame->set_size(me->drawing, me->drawstate, |
211 | me->params, me->tilesize); |
1f3ee4ee |
212 | } |
213 | } |
214 | |
8c4ea6f0 |
215 | void midend_size(midend *me, int *x, int *y, int user_size) |
7f77ea24 |
216 | { |
1f3ee4ee |
217 | int min, max; |
218 | int rx, ry; |
219 | |
220 | /* |
05e50a96 |
221 | * We can't set the size on the same drawstate twice. So if |
222 | * we've already sized one drawstate, we must throw it away and |
223 | * create a new one. |
224 | */ |
225 | if (me->drawstate && me->tilesize > 0) { |
226 | me->ourgame->free_drawstate(me->drawing, me->drawstate); |
227 | me->drawstate = me->ourgame->new_drawstate(me->drawing, |
228 | me->states[0].state); |
229 | } |
230 | |
231 | /* |
1f3ee4ee |
232 | * Find the tile size that best fits within the given space. If |
8c4ea6f0 |
233 | * `user_size' is TRUE, we must actually find the _largest_ such |
234 | * tile size, in order to get as close to the user's explicit |
235 | * request as possible; otherwise, we bound above at the game's |
236 | * preferred tile size, so that the game gets what it wants |
237 | * provided that this doesn't break the constraint from the |
238 | * front-end (which is likely to be a screen size or similar). |
1f3ee4ee |
239 | */ |
8c4ea6f0 |
240 | if (user_size) { |
1f3ee4ee |
241 | max = 1; |
242 | do { |
243 | max *= 2; |
244 | me->ourgame->compute_size(me->params, max, &rx, &ry); |
245 | } while (rx <= *x && ry <= *y); |
246 | } else |
83134cff |
247 | max = me->preferred_tilesize + 1; |
1f3ee4ee |
248 | min = 1; |
249 | |
250 | /* |
251 | * Now binary-search between min and max. We're looking for a |
252 | * boundary rather than a value: the point at which tile sizes |
253 | * stop fitting within the given dimensions. Thus, we stop when |
254 | * max and min differ by exactly 1. |
255 | */ |
256 | while (max - min > 1) { |
257 | int mid = (max + min) / 2; |
258 | me->ourgame->compute_size(me->params, mid, &rx, &ry); |
259 | if (rx <= *x && ry <= *y) |
260 | min = mid; |
261 | else |
262 | max = mid; |
263 | } |
264 | |
265 | /* |
266 | * Now `min' is a valid size, and `max' isn't. So use `min'. |
267 | */ |
268 | |
269 | me->tilesize = min; |
8c4ea6f0 |
270 | if (user_size) |
271 | /* If the user requested a change in size, make it permanent. */ |
888050f2 |
272 | me->preferred_tilesize = me->tilesize; |
1f3ee4ee |
273 | midend_size_new_drawstate(me); |
274 | *x = me->winwidth; |
275 | *y = me->winheight; |
7f77ea24 |
276 | } |
277 | |
dafd6cf6 |
278 | void midend_set_params(midend *me, game_params *params) |
7f77ea24 |
279 | { |
be8d5aa1 |
280 | me->ourgame->free_params(me->params); |
281 | me->params = me->ourgame->dup_params(params); |
7f77ea24 |
282 | } |
283 | |
821ab2c6 |
284 | game_params *midend_get_params(midend *me) |
285 | { |
286 | return me->ourgame->dup_params(me->params); |
287 | } |
288 | |
dafd6cf6 |
289 | static void midend_set_timer(midend *me) |
48dcdd62 |
290 | { |
291 | me->timing = (me->ourgame->is_timed && |
4d08de49 |
292 | me->ourgame->timing_state(me->states[me->statepos-1].state, |
293 | me->ui)); |
48dcdd62 |
294 | if (me->timing || me->flash_time || me->anim_time) |
295 | activate_timer(me->frontend); |
296 | else |
297 | deactivate_timer(me->frontend); |
298 | } |
299 | |
dafd6cf6 |
300 | void midend_force_redraw(midend *me) |
008b4378 |
301 | { |
302 | if (me->drawstate) |
dafd6cf6 |
303 | me->ourgame->free_drawstate(me->drawing, me->drawstate); |
304 | me->drawstate = me->ourgame->new_drawstate(me->drawing, |
305 | me->states[0].state); |
1e3e152d |
306 | midend_size_new_drawstate(me); |
008b4378 |
307 | midend_redraw(me); |
308 | } |
309 | |
dafd6cf6 |
310 | void midend_new_game(midend *me) |
7f77ea24 |
311 | { |
ab53eb64 |
312 | midend_free_game(me); |
2ef96bd6 |
313 | |
7f77ea24 |
314 | assert(me->nstates == 0); |
315 | |
1185e3c5 |
316 | if (me->genmode == GOT_DESC) { |
317 | me->genmode = GOT_NOTHING; |
318 | } else { |
319 | random_state *rs; |
320 | |
321 | if (me->genmode == GOT_SEED) { |
322 | me->genmode = GOT_NOTHING; |
323 | } else { |
324 | /* |
325 | * Generate a new random seed. 15 digits comes to about |
326 | * 48 bits, which should be more than enough. |
97c44af3 |
327 | * |
328 | * I'll avoid putting a leading zero on the number, |
329 | * just in case it confuses anybody who thinks it's |
330 | * processed as an integer rather than a string. |
1185e3c5 |
331 | */ |
332 | char newseed[16]; |
333 | int i; |
334 | newseed[15] = '\0'; |
97c44af3 |
335 | newseed[0] = '1' + random_upto(me->random, 9); |
336 | for (i = 1; i < 15; i++) |
1185e3c5 |
337 | newseed[i] = '0' + random_upto(me->random, 10); |
338 | sfree(me->seedstr); |
339 | me->seedstr = dupstr(newseed); |
f60f7e7c |
340 | |
341 | if (me->curparams) |
342 | me->ourgame->free_params(me->curparams); |
343 | me->curparams = me->ourgame->dup_params(me->params); |
1185e3c5 |
344 | } |
345 | |
346 | sfree(me->desc); |
0a6892db |
347 | sfree(me->privdesc); |
c566778e |
348 | sfree(me->aux_info); |
6f2d8d7c |
349 | me->aux_info = NULL; |
1185e3c5 |
350 | |
1fbb0680 |
351 | rs = random_new(me->seedstr, strlen(me->seedstr)); |
dafd6cf6 |
352 | /* |
353 | * If this midend has been instantiated without providing a |
354 | * drawing API, it is non-interactive. This means that it's |
355 | * being used for bulk game generation, and hence we should |
356 | * pass the non-interactive flag to new_desc. |
357 | */ |
6aa6af4c |
358 | me->desc = me->ourgame->new_desc(me->curparams, rs, |
dafd6cf6 |
359 | &me->aux_info, (me->drawing != NULL)); |
0a6892db |
360 | me->privdesc = NULL; |
1185e3c5 |
361 | random_free(rs); |
1185e3c5 |
362 | } |
7f77ea24 |
363 | |
364 | ensure(me); |
0b2bbd55 |
365 | |
366 | /* |
367 | * It might seem a bit odd that we're using me->params to |
368 | * create the initial game state, rather than me->curparams |
369 | * which is better tailored to this specific game and which we |
370 | * always know. |
371 | * |
372 | * It's supposed to be an invariant in the midend that |
373 | * me->params and me->curparams differ in no aspect that is |
374 | * important after generation (i.e. after new_desc()). By |
375 | * deliberately passing the _less_ specific of these two |
376 | * parameter sets, we provoke play-time misbehaviour in the |
377 | * case where a game has failed to encode a play-time parameter |
378 | * in the non-full version of encode_params(). |
379 | */ |
c380832d |
380 | me->states[me->nstates].state = |
381 | me->ourgame->new_game(me, me->params, me->desc); |
0b2bbd55 |
382 | |
a4393230 |
383 | me->states[me->nstates].movestr = NULL; |
384 | me->states[me->nstates].movetype = NEWGAME; |
28d0118c |
385 | me->nstates++; |
7f77ea24 |
386 | me->statepos = 1; |
dafd6cf6 |
387 | me->drawstate = me->ourgame->new_drawstate(me->drawing, |
388 | me->states[0].state); |
1e3e152d |
389 | midend_size_new_drawstate(me); |
48dcdd62 |
390 | me->elapsed = 0.0F; |
74a4e547 |
391 | if (me->ui) |
be8d5aa1 |
392 | me->ourgame->free_ui(me->ui); |
28d0118c |
393 | me->ui = me->ourgame->new_ui(me->states[0].state); |
4d08de49 |
394 | midend_set_timer(me); |
6776a950 |
395 | me->pressed_mouse_button = 0; |
7f77ea24 |
396 | } |
397 | |
dafd6cf6 |
398 | static int midend_undo(midend *me) |
7f77ea24 |
399 | { |
1482ee76 |
400 | if (me->statepos > 1) { |
07dfb697 |
401 | if (me->ui) |
402 | me->ourgame->changed_state(me->ui, |
403 | me->states[me->statepos-1].state, |
404 | me->states[me->statepos-2].state); |
7f77ea24 |
405 | me->statepos--; |
c822de4a |
406 | me->dir = -1; |
1482ee76 |
407 | return 1; |
408 | } else |
409 | return 0; |
7f77ea24 |
410 | } |
411 | |
dafd6cf6 |
412 | static int midend_redo(midend *me) |
7f77ea24 |
413 | { |
1482ee76 |
414 | if (me->statepos < me->nstates) { |
07dfb697 |
415 | if (me->ui) |
416 | me->ourgame->changed_state(me->ui, |
417 | me->states[me->statepos-1].state, |
418 | me->states[me->statepos].state); |
7f77ea24 |
419 | me->statepos++; |
c822de4a |
420 | me->dir = +1; |
1482ee76 |
421 | return 1; |
422 | } else |
423 | return 0; |
7f77ea24 |
424 | } |
425 | |
dafd6cf6 |
426 | static void midend_finish_move(midend *me) |
87ed82be |
427 | { |
428 | float flashtime; |
429 | |
28d0118c |
430 | /* |
431 | * We do not flash if the later of the two states is special. |
432 | * This covers both forward Solve moves and backward (undone) |
433 | * Restart moves. |
434 | */ |
435 | if ((me->oldstate || me->statepos > 1) && |
a4393230 |
436 | ((me->dir > 0 && !special(me->states[me->statepos-1].movetype)) || |
28d0118c |
437 | (me->dir < 0 && me->statepos < me->nstates && |
a4393230 |
438 | !special(me->states[me->statepos].movetype)))) { |
be8d5aa1 |
439 | flashtime = me->ourgame->flash_length(me->oldstate ? me->oldstate : |
28d0118c |
440 | me->states[me->statepos-2].state, |
441 | me->states[me->statepos-1].state, |
e3f21163 |
442 | me->oldstate ? me->dir : +1, |
443 | me->ui); |
87ed82be |
444 | if (flashtime > 0) { |
445 | me->flash_pos = 0.0F; |
446 | me->flash_time = flashtime; |
447 | } |
448 | } |
449 | |
450 | if (me->oldstate) |
be8d5aa1 |
451 | me->ourgame->free_game(me->oldstate); |
87ed82be |
452 | me->oldstate = NULL; |
453 | me->anim_pos = me->anim_time = 0; |
c822de4a |
454 | me->dir = 0; |
87ed82be |
455 | |
48dcdd62 |
456 | midend_set_timer(me); |
87ed82be |
457 | } |
458 | |
dafd6cf6 |
459 | void midend_stop_anim(midend *me) |
7f77ea24 |
460 | { |
8317499a |
461 | if (me->oldstate || me->anim_time != 0) { |
87ed82be |
462 | midend_finish_move(me); |
2ef96bd6 |
463 | midend_redraw(me); |
464 | } |
dd216087 |
465 | } |
466 | |
dafd6cf6 |
467 | void midend_restart_game(midend *me) |
28d0118c |
468 | { |
469 | game_state *s; |
470 | |
7f89707c |
471 | midend_stop_anim(me); |
472 | |
28d0118c |
473 | assert(me->statepos >= 1); |
474 | if (me->statepos == 1) |
475 | return; /* no point doing anything at all! */ |
476 | |
0a6892db |
477 | /* |
478 | * During restart, we reconstruct the game from the (public) |
479 | * game description rather than from states[0], because that |
480 | * way Mines gets slightly more sensible behaviour (restart |
481 | * goes to _after_ the first click so you don't have to |
482 | * remember where you clicked). |
483 | */ |
484 | s = me->ourgame->new_game(me, me->params, me->desc); |
28d0118c |
485 | |
486 | /* |
487 | * Now enter the restarted state as the next move. |
488 | */ |
489 | midend_stop_anim(me); |
490 | while (me->nstates > me->statepos) |
491 | me->ourgame->free_game(me->states[--me->nstates].state); |
492 | ensure(me); |
493 | me->states[me->nstates].state = s; |
a4393230 |
494 | me->states[me->nstates].movestr = dupstr(me->desc); |
495 | me->states[me->nstates].movetype = RESTART; |
28d0118c |
496 | me->statepos = ++me->nstates; |
07dfb697 |
497 | if (me->ui) |
498 | me->ourgame->changed_state(me->ui, |
499 | me->states[me->statepos-2].state, |
500 | me->states[me->statepos-1].state); |
28d0118c |
501 | me->anim_time = 0.0; |
502 | midend_finish_move(me); |
503 | midend_redraw(me); |
48dcdd62 |
504 | midend_set_timer(me); |
28d0118c |
505 | } |
506 | |
dafd6cf6 |
507 | static int midend_really_process_key(midend *me, int x, int y, int button) |
dd216087 |
508 | { |
28d0118c |
509 | game_state *oldstate = |
510 | me->ourgame->dup_game(me->states[me->statepos - 1].state); |
9d6c3859 |
511 | int type = MOVE, gottype = FALSE, ret = 1; |
dd216087 |
512 | float anim_time; |
4c692867 |
513 | game_state *s; |
514 | char *movestr; |
515 | |
516 | movestr = |
517 | me->ourgame->interpret_move(me->states[me->statepos-1].state, |
518 | me->ui, me->drawstate, x, y, button); |
7f77ea24 |
519 | |
4c692867 |
520 | if (!movestr) { |
521 | if (button == 'n' || button == 'N' || button == '\x0E') { |
522 | midend_stop_anim(me); |
523 | midend_new_game(me); |
524 | midend_redraw(me); |
525 | goto done; /* never animate */ |
526 | } else if (button == 'u' || button == 'u' || |
527 | button == '\x1A' || button == '\x1F') { |
528 | midend_stop_anim(me); |
9d6c3859 |
529 | type = me->states[me->statepos-1].movetype; |
530 | gottype = TRUE; |
4c692867 |
531 | if (!midend_undo(me)) |
532 | goto done; |
533 | } else if (button == 'r' || button == 'R' || |
534 | button == '\x12' || button == '\x19') { |
535 | midend_stop_anim(me); |
536 | if (!midend_redo(me)) |
537 | goto done; |
538 | } else if (button == 'q' || button == 'Q' || button == '\x11') { |
539 | ret = 0; |
540 | goto done; |
541 | } else |
ab53eb64 |
542 | goto done; |
2ef96bd6 |
543 | } else { |
4c692867 |
544 | if (!*movestr) |
df11cd4e |
545 | s = me->states[me->statepos-1].state; |
546 | else { |
547 | s = me->ourgame->execute_move(me->states[me->statepos-1].state, |
548 | movestr); |
549 | assert(s != NULL); |
df11cd4e |
550 | } |
74a4e547 |
551 | |
28d0118c |
552 | if (s == me->states[me->statepos-1].state) { |
74a4e547 |
553 | /* |
554 | * make_move() is allowed to return its input state to |
555 | * indicate that although no move has been made, the UI |
556 | * state has been updated and a redraw is called for. |
557 | */ |
558 | midend_redraw(me); |
0eb3b899 |
559 | midend_set_timer(me); |
ab53eb64 |
560 | goto done; |
74a4e547 |
561 | } else if (s) { |
dd216087 |
562 | midend_stop_anim(me); |
2ef96bd6 |
563 | while (me->nstates > me->statepos) |
28d0118c |
564 | me->ourgame->free_game(me->states[--me->nstates].state); |
2ef96bd6 |
565 | ensure(me); |
a4393230 |
566 | assert(movestr != NULL); |
28d0118c |
567 | me->states[me->nstates].state = s; |
a4393230 |
568 | me->states[me->nstates].movestr = movestr; |
569 | me->states[me->nstates].movetype = MOVE; |
2ef96bd6 |
570 | me->statepos = ++me->nstates; |
c822de4a |
571 | me->dir = +1; |
faff1e07 |
572 | if (me->ui) |
573 | me->ourgame->changed_state(me->ui, |
574 | me->states[me->statepos-2].state, |
575 | me->states[me->statepos-1].state); |
2ef96bd6 |
576 | } else { |
a4393230 |
577 | goto done; |
2ef96bd6 |
578 | } |
7f77ea24 |
579 | } |
580 | |
9d6c3859 |
581 | if (!gottype) |
582 | type = me->states[me->statepos-1].movetype; |
28d0118c |
583 | |
2ef96bd6 |
584 | /* |
585 | * See if this move requires an animation. |
586 | */ |
9d6c3859 |
587 | if (special(type) && !(type == SOLVE && |
2705d374 |
588 | (me->ourgame->flags & SOLVE_ANIMATES))) { |
28d0118c |
589 | anim_time = 0; |
590 | } else { |
591 | anim_time = me->ourgame->anim_length(oldstate, |
592 | me->states[me->statepos-1].state, |
e3f21163 |
593 | me->dir, me->ui); |
28d0118c |
594 | } |
2ef96bd6 |
595 | |
ab53eb64 |
596 | me->oldstate = oldstate; oldstate = NULL; |
2ef96bd6 |
597 | if (anim_time > 0) { |
2ef96bd6 |
598 | me->anim_time = anim_time; |
599 | } else { |
2ef96bd6 |
600 | me->anim_time = 0.0; |
87ed82be |
601 | midend_finish_move(me); |
7f77ea24 |
602 | } |
2ef96bd6 |
603 | me->anim_pos = 0.0; |
604 | |
605 | midend_redraw(me); |
606 | |
48dcdd62 |
607 | midend_set_timer(me); |
7f77ea24 |
608 | |
ab53eb64 |
609 | done: |
610 | if (oldstate) me->ourgame->free_game(oldstate); |
611 | return ret; |
7f77ea24 |
612 | } |
2ef96bd6 |
613 | |
dafd6cf6 |
614 | int midend_process_key(midend *me, int x, int y, int button) |
6776a950 |
615 | { |
616 | int ret = 1; |
617 | |
618 | /* |
619 | * Harmonise mouse drag and release messages. |
620 | * |
621 | * Some front ends might accidentally switch from sending, say, |
622 | * RIGHT_DRAG messages to sending LEFT_DRAG, half way through a |
623 | * drag. (This can happen on the Mac, for example, since |
624 | * RIGHT_DRAG is usually done using Command+drag, and if the |
625 | * user accidentally releases Command half way through the drag |
626 | * then there will be trouble.) |
627 | * |
628 | * It would be an O(number of front ends) annoyance to fix this |
629 | * in the front ends, but an O(number of back ends) annoyance |
630 | * to have each game capable of dealing with it. Therefore, we |
631 | * fix it _here_ in the common midend code so that it only has |
632 | * to be done once. |
633 | * |
eeba2afe |
634 | * The possible ways in which things can go screwy in the front |
635 | * end are: |
6776a950 |
636 | * |
eeba2afe |
637 | * - in a system containing multiple physical buttons button |
638 | * presses can inadvertently overlap. We can see ABab (caps |
639 | * meaning button-down and lowercase meaning button-up) when |
640 | * the user had semantically intended AaBb. |
6776a950 |
641 | * |
eeba2afe |
642 | * - in a system where one button is simulated by means of a |
643 | * modifier key and another button, buttons can mutate |
644 | * between press and release (possibly during drag). So we |
645 | * can see Ab instead of Aa. |
6776a950 |
646 | * |
eeba2afe |
647 | * Definite requirements are: |
648 | * |
649 | * - button _presses_ must never be invented or destroyed. If |
650 | * the user presses two buttons in succession, the button |
651 | * presses must be transferred to the backend unchanged. So |
652 | * if we see AaBb , that's fine; if we see ABab (the button |
653 | * presses inadvertently overlapped) we must somehow |
654 | * `correct' it to AaBb. |
655 | * |
656 | * - every mouse action must end up looking like a press, zero |
657 | * or more drags, then a release. This allows back ends to |
658 | * make the _assumption_ that incoming mouse data will be |
659 | * sane in this regard, and not worry about the details. |
660 | * |
661 | * So my policy will be: |
662 | * |
663 | * - treat any button-up as a button-up for the currently |
664 | * pressed button, or ignore it if there is no currently |
665 | * pressed button. |
666 | * |
667 | * - treat any drag as a drag for the currently pressed |
668 | * button, or ignore it if there is no currently pressed |
669 | * button. |
670 | * |
671 | * - if we see a button-down while another button is currently |
672 | * pressed, invent a button-up for the first one and then |
673 | * pass the button-down through as before. |
6776a950 |
674 | * |
93b1da3d |
675 | * 2005-05-31: An addendum to the above. Some games might want |
676 | * a `priority order' among buttons, such that if one button is |
677 | * pressed while another is down then a fixed one of the |
678 | * buttons takes priority no matter what order they're pressed |
679 | * in. Mines, in particular, wants to treat a left+right click |
680 | * like a left click for the benefit of users of other |
681 | * implementations. So the last of the above points is modified |
682 | * in the presence of an (optional) button priority order. |
6776a950 |
683 | */ |
684 | if (IS_MOUSE_DRAG(button) || IS_MOUSE_RELEASE(button)) { |
eeba2afe |
685 | if (me->pressed_mouse_button) { |
686 | if (IS_MOUSE_DRAG(button)) { |
687 | button = me->pressed_mouse_button + |
688 | (LEFT_DRAG - LEFT_BUTTON); |
689 | } else { |
690 | button = me->pressed_mouse_button + |
691 | (LEFT_RELEASE - LEFT_BUTTON); |
6776a950 |
692 | } |
eeba2afe |
693 | } else |
694 | return ret; /* ignore it */ |
6776a950 |
695 | } else if (IS_MOUSE_DOWN(button) && me->pressed_mouse_button) { |
93b1da3d |
696 | /* |
697 | * If the new button has lower priority than the old one, |
698 | * don't bother doing this. |
699 | */ |
2705d374 |
700 | if (me->ourgame->flags & |
93b1da3d |
701 | BUTTON_BEATS(me->pressed_mouse_button, button)) |
702 | return ret; /* just ignore it */ |
703 | |
6776a950 |
704 | /* |
705 | * Fabricate a button-up for the previously pressed button. |
706 | */ |
707 | ret = ret && midend_really_process_key |
708 | (me, x, y, (me->pressed_mouse_button + |
709 | (LEFT_RELEASE - LEFT_BUTTON))); |
710 | } |
711 | |
712 | /* |
713 | * Now send on the event we originally received. |
714 | */ |
715 | ret = ret && midend_really_process_key(me, x, y, button); |
716 | |
717 | /* |
718 | * And update the currently pressed button. |
719 | */ |
720 | if (IS_MOUSE_RELEASE(button)) |
721 | me->pressed_mouse_button = 0; |
722 | else if (IS_MOUSE_DOWN(button)) |
723 | me->pressed_mouse_button = button; |
724 | |
725 | return ret; |
726 | } |
727 | |
dafd6cf6 |
728 | void midend_redraw(midend *me) |
2ef96bd6 |
729 | { |
dafd6cf6 |
730 | assert(me->drawing); |
731 | |
2ef96bd6 |
732 | if (me->statepos > 0 && me->drawstate) { |
dafd6cf6 |
733 | start_draw(me->drawing); |
2ef96bd6 |
734 | if (me->oldstate && me->anim_time > 0 && |
735 | me->anim_pos < me->anim_time) { |
c822de4a |
736 | assert(me->dir != 0); |
dafd6cf6 |
737 | me->ourgame->redraw(me->drawing, me->drawstate, me->oldstate, |
28d0118c |
738 | me->states[me->statepos-1].state, me->dir, |
be8d5aa1 |
739 | me->ui, me->anim_pos, me->flash_pos); |
2ef96bd6 |
740 | } else { |
dafd6cf6 |
741 | me->ourgame->redraw(me->drawing, me->drawstate, NULL, |
28d0118c |
742 | me->states[me->statepos-1].state, +1 /*shrug*/, |
be8d5aa1 |
743 | me->ui, 0.0, me->flash_pos); |
2ef96bd6 |
744 | } |
dafd6cf6 |
745 | end_draw(me->drawing); |
2ef96bd6 |
746 | } |
747 | } |
748 | |
afc306fc |
749 | /* |
750 | * Nasty hacky function used to implement the --redo option in |
751 | * gtk.c. Only used for generating the puzzles' icons. |
752 | */ |
753 | void midend_freeze_timer(midend *me, float tprop) |
754 | { |
755 | me->anim_pos = me->anim_time * tprop; |
756 | midend_redraw(me); |
757 | deactivate_timer(me->frontend); |
758 | } |
759 | |
dafd6cf6 |
760 | void midend_timer(midend *me, float tplus) |
2ef96bd6 |
761 | { |
0eb3b899 |
762 | int need_redraw = (me->anim_time > 0 || me->flash_time > 0); |
763 | |
2ef96bd6 |
764 | me->anim_pos += tplus; |
765 | if (me->anim_pos >= me->anim_time || |
766 | me->anim_time == 0 || !me->oldstate) { |
87ed82be |
767 | if (me->anim_time > 0) |
768 | midend_finish_move(me); |
769 | } |
48dcdd62 |
770 | |
87ed82be |
771 | me->flash_pos += tplus; |
772 | if (me->flash_pos >= me->flash_time || me->flash_time == 0) { |
773 | me->flash_pos = me->flash_time = 0; |
2ef96bd6 |
774 | } |
48dcdd62 |
775 | |
0eb3b899 |
776 | if (need_redraw) |
777 | midend_redraw(me); |
48dcdd62 |
778 | |
779 | if (me->timing) { |
780 | float oldelapsed = me->elapsed; |
781 | me->elapsed += tplus; |
782 | if ((int)oldelapsed != (int)me->elapsed) |
dafd6cf6 |
783 | status_bar(me->drawing, me->laststatus ? me->laststatus : ""); |
48dcdd62 |
784 | } |
785 | |
786 | midend_set_timer(me); |
2ef96bd6 |
787 | } |
788 | |
dafd6cf6 |
789 | float *midend_colours(midend *me, int *ncolours) |
2ef96bd6 |
790 | { |
2ef96bd6 |
791 | float *ret; |
792 | |
8266f3fc |
793 | ret = me->ourgame->colours(me->frontend, ncolours); |
2ef96bd6 |
794 | |
813593cc |
795 | { |
796 | int i; |
797 | |
798 | /* |
799 | * Allow environment-based overrides for the standard |
800 | * colours by defining variables along the lines of |
801 | * `NET_COLOUR_4=6000c0'. |
802 | */ |
803 | |
804 | for (i = 0; i < *ncolours; i++) { |
805 | char buf[80], *e; |
806 | unsigned int r, g, b; |
056405ec |
807 | int j, k; |
813593cc |
808 | |
809 | sprintf(buf, "%s_COLOUR_%d", me->ourgame->name, i); |
056405ec |
810 | for (j = k = 0; buf[j]; j++) |
811 | if (!isspace((unsigned char)buf[j])) |
812 | buf[k++] = toupper((unsigned char)buf[j]); |
813 | buf[k] = '\0'; |
813593cc |
814 | if ((e = getenv(buf)) != NULL && |
815 | sscanf(e, "%2x%2x%2x", &r, &g, &b) == 3) { |
816 | ret[i*3 + 0] = r / 255.0; |
817 | ret[i*3 + 1] = g / 255.0; |
818 | ret[i*3 + 2] = b / 255.0; |
819 | } |
820 | } |
821 | } |
822 | |
2ef96bd6 |
823 | return ret; |
824 | } |
eb2ad6f1 |
825 | |
dafd6cf6 |
826 | int midend_num_presets(midend *me) |
eb2ad6f1 |
827 | { |
828 | if (!me->npresets) { |
829 | char *name; |
830 | game_params *preset; |
831 | |
be8d5aa1 |
832 | while (me->ourgame->fetch_preset(me->npresets, &name, &preset)) { |
eb2ad6f1 |
833 | if (me->presetsize <= me->npresets) { |
834 | me->presetsize = me->npresets + 10; |
835 | me->presets = sresize(me->presets, me->presetsize, |
836 | game_params *); |
837 | me->preset_names = sresize(me->preset_names, me->presetsize, |
838 | char *); |
839 | } |
840 | |
841 | me->presets[me->npresets] = preset; |
842 | me->preset_names[me->npresets] = name; |
843 | me->npresets++; |
844 | } |
845 | } |
846 | |
813593cc |
847 | { |
848 | /* |
849 | * Allow environment-based extensions to the preset list by |
850 | * defining a variable along the lines of `SOLO_PRESETS=2x3 |
851 | * Advanced:2x3da'. Colon-separated list of items, |
852 | * alternating between textual titles in the menu and |
853 | * encoded parameter strings. |
854 | */ |
855 | char buf[80], *e, *p; |
056405ec |
856 | int j, k; |
813593cc |
857 | |
858 | sprintf(buf, "%s_PRESETS", me->ourgame->name); |
056405ec |
859 | for (j = k = 0; buf[j]; j++) |
860 | if (!isspace((unsigned char)buf[j])) |
861 | buf[k++] = toupper((unsigned char)buf[j]); |
862 | buf[k] = '\0'; |
813593cc |
863 | |
864 | if ((e = getenv(buf)) != NULL) { |
865 | p = e = dupstr(e); |
866 | |
867 | while (*p) { |
868 | char *name, *val; |
869 | game_params *preset; |
870 | |
871 | name = p; |
872 | while (*p && *p != ':') p++; |
873 | if (*p) *p++ = '\0'; |
874 | val = p; |
875 | while (*p && *p != ':') p++; |
876 | if (*p) *p++ = '\0'; |
877 | |
878 | preset = me->ourgame->default_params(); |
879 | me->ourgame->decode_params(preset, val); |
880 | |
3ff276f2 |
881 | if (me->ourgame->validate_params(preset, TRUE)) { |
239ba6e6 |
882 | /* Drop this one from the list. */ |
883 | me->ourgame->free_params(preset); |
884 | continue; |
885 | } |
886 | |
813593cc |
887 | if (me->presetsize <= me->npresets) { |
888 | me->presetsize = me->npresets + 10; |
889 | me->presets = sresize(me->presets, me->presetsize, |
890 | game_params *); |
891 | me->preset_names = sresize(me->preset_names, |
892 | me->presetsize, char *); |
893 | } |
894 | |
895 | me->presets[me->npresets] = preset; |
cb64d2dd |
896 | me->preset_names[me->npresets] = dupstr(name); |
813593cc |
897 | me->npresets++; |
898 | } |
899 | } |
900 | } |
901 | |
eb2ad6f1 |
902 | return me->npresets; |
903 | } |
904 | |
dafd6cf6 |
905 | void midend_fetch_preset(midend *me, int n, |
eb2ad6f1 |
906 | char **name, game_params **params) |
907 | { |
908 | assert(n >= 0 && n < me->npresets); |
909 | *name = me->preset_names[n]; |
910 | *params = me->presets[n]; |
911 | } |
fd1a1a2b |
912 | |
dafd6cf6 |
913 | int midend_wants_statusbar(midend *me) |
fd1a1a2b |
914 | { |
ac9f41c4 |
915 | return me->ourgame->wants_statusbar; |
fd1a1a2b |
916 | } |
c8230524 |
917 | |
dafd6cf6 |
918 | void midend_supersede_game_desc(midend *me, char *desc, char *privdesc) |
c380832d |
919 | { |
920 | sfree(me->desc); |
0a6892db |
921 | sfree(me->privdesc); |
c380832d |
922 | me->desc = dupstr(desc); |
0a6892db |
923 | me->privdesc = privdesc ? dupstr(privdesc) : NULL; |
c380832d |
924 | } |
925 | |
dafd6cf6 |
926 | config_item *midend_get_config(midend *me, int which, char **wintitle) |
c8230524 |
927 | { |
ab53eb64 |
928 | char *titlebuf, *parstr, *rest; |
5928817c |
929 | config_item *ret; |
ab53eb64 |
930 | char sep; |
5928817c |
931 | |
ab53eb64 |
932 | assert(wintitle); |
be8d5aa1 |
933 | titlebuf = snewn(40 + strlen(me->ourgame->name), char); |
5928817c |
934 | |
935 | switch (which) { |
936 | case CFG_SETTINGS: |
be8d5aa1 |
937 | sprintf(titlebuf, "%s configuration", me->ourgame->name); |
ab53eb64 |
938 | *wintitle = titlebuf; |
be8d5aa1 |
939 | return me->ourgame->configure(me->params); |
5928817c |
940 | case CFG_SEED: |
1185e3c5 |
941 | case CFG_DESC: |
ab53eb64 |
942 | if (!me->curparams) { |
943 | sfree(titlebuf); |
944 | return NULL; |
945 | } |
946 | sprintf(titlebuf, "%s %s selection", me->ourgame->name, |
1185e3c5 |
947 | which == CFG_SEED ? "random" : "game"); |
ab53eb64 |
948 | *wintitle = titlebuf; |
5928817c |
949 | |
950 | ret = snewn(2, config_item); |
951 | |
952 | ret[0].type = C_STRING; |
1185e3c5 |
953 | if (which == CFG_SEED) |
954 | ret[0].name = "Game random seed"; |
955 | else |
956 | ret[0].name = "Game ID"; |
5928817c |
957 | ret[0].ival = 0; |
b0e26073 |
958 | /* |
1185e3c5 |
959 | * For CFG_DESC the text going in here will be a string |
960 | * encoding of the restricted parameters, plus a colon, |
961 | * plus the game description. For CFG_SEED it will be the |
962 | * full parameters, plus a hash, plus the random seed data. |
963 | * Either of these is a valid full game ID (although only |
964 | * the former is likely to persist across many code |
965 | * changes). |
b0e26073 |
966 | */ |
f60f7e7c |
967 | parstr = me->ourgame->encode_params(me->curparams, which == CFG_SEED); |
ab53eb64 |
968 | assert(parstr); |
1185e3c5 |
969 | if (which == CFG_DESC) { |
ab53eb64 |
970 | rest = me->desc ? me->desc : ""; |
971 | sep = ':'; |
1185e3c5 |
972 | } else { |
ab53eb64 |
973 | rest = me->seedstr ? me->seedstr : ""; |
974 | sep = '#'; |
1185e3c5 |
975 | } |
ab53eb64 |
976 | ret[0].sval = snewn(strlen(parstr) + strlen(rest) + 2, char); |
977 | sprintf(ret[0].sval, "%s%c%s", parstr, sep, rest); |
b0e26073 |
978 | sfree(parstr); |
5928817c |
979 | |
980 | ret[1].type = C_END; |
981 | ret[1].name = ret[1].sval = NULL; |
982 | ret[1].ival = 0; |
983 | |
984 | return ret; |
985 | } |
986 | |
987 | assert(!"We shouldn't be here"); |
988 | return NULL; |
c8230524 |
989 | } |
990 | |
dafd6cf6 |
991 | static char *midend_game_id_int(midend *me, char *id, int defmode) |
8b7938e7 |
992 | { |
1185e3c5 |
993 | char *error, *par, *desc, *seed; |
5c9f61fd |
994 | game_params *newcurparams, *newparams, *oldparams1, *oldparams2; |
995 | int free_params; |
8b7938e7 |
996 | |
1185e3c5 |
997 | seed = strchr(id, '#'); |
998 | desc = strchr(id, ':'); |
8b7938e7 |
999 | |
1185e3c5 |
1000 | if (desc && (!seed || desc < seed)) { |
1001 | /* |
1002 | * We have a colon separating parameters from game |
1003 | * description. So `par' now points to the parameters |
1004 | * string, and `desc' to the description string. |
1005 | */ |
1006 | *desc++ = '\0'; |
1007 | par = id; |
1008 | seed = NULL; |
1009 | } else if (seed && (!desc || seed < desc)) { |
8b7938e7 |
1010 | /* |
50ff5730 |
1011 | * We have a hash separating parameters from random seed. |
1185e3c5 |
1012 | * So `par' now points to the parameters string, and `seed' |
1013 | * to the seed string. |
8b7938e7 |
1014 | */ |
1015 | *seed++ = '\0'; |
1016 | par = id; |
1185e3c5 |
1017 | desc = NULL; |
8b7938e7 |
1018 | } else { |
1019 | /* |
1185e3c5 |
1020 | * We only have one string. Depending on `defmode', we take |
1021 | * it to be either parameters, seed or description. |
8b7938e7 |
1022 | */ |
1185e3c5 |
1023 | if (defmode == DEF_SEED) { |
8b7938e7 |
1024 | seed = id; |
1185e3c5 |
1025 | par = desc = NULL; |
1026 | } else if (defmode == DEF_DESC) { |
1027 | desc = id; |
1028 | par = seed = NULL; |
8b7938e7 |
1029 | } else { |
8b7938e7 |
1030 | par = id; |
1185e3c5 |
1031 | seed = desc = NULL; |
8b7938e7 |
1032 | } |
1033 | } |
1034 | |
5c9f61fd |
1035 | /* |
1036 | * We must be reasonably careful here not to modify anything in |
1037 | * `me' until we have finished validating things. This function |
1038 | * must either return an error and do nothing to the midend, or |
1039 | * return success and do everything; nothing in between is |
1040 | * acceptable. |
1041 | */ |
1042 | newcurparams = newparams = oldparams1 = oldparams2 = NULL; |
1043 | |
8b7938e7 |
1044 | if (par) { |
5c9f61fd |
1045 | newcurparams = me->ourgame->dup_params(me->params); |
1046 | me->ourgame->decode_params(newcurparams, par); |
3ff276f2 |
1047 | error = me->ourgame->validate_params(newcurparams, desc == NULL); |
8b7938e7 |
1048 | if (error) { |
5c9f61fd |
1049 | me->ourgame->free_params(newcurparams); |
8b7938e7 |
1050 | return error; |
1051 | } |
5c9f61fd |
1052 | oldparams1 = me->curparams; |
1185e3c5 |
1053 | |
1054 | /* |
1055 | * Now filter only the persistent parts of this state into |
1056 | * the long-term params structure, unless we've _only_ |
1057 | * received a params string in which case the whole lot is |
1058 | * persistent. |
1059 | */ |
5c9f61fd |
1060 | oldparams2 = me->params; |
1185e3c5 |
1061 | if (seed || desc) { |
5c9f61fd |
1062 | char *tmpstr; |
1063 | |
1064 | newparams = me->ourgame->dup_params(me->params); |
1065 | |
1066 | tmpstr = me->ourgame->encode_params(newcurparams, FALSE); |
1067 | me->ourgame->decode_params(newparams, tmpstr); |
1068 | |
3af70dd4 |
1069 | sfree(tmpstr); |
1185e3c5 |
1070 | } else { |
5c9f61fd |
1071 | newparams = me->ourgame->dup_params(newcurparams); |
1185e3c5 |
1072 | } |
5c9f61fd |
1073 | free_params = TRUE; |
1074 | } else { |
1075 | newcurparams = me->curparams; |
1076 | newparams = me->params; |
1077 | free_params = FALSE; |
8b7938e7 |
1078 | } |
1079 | |
5c9f61fd |
1080 | if (desc) { |
1081 | error = me->ourgame->validate_desc(newparams, desc); |
1082 | if (error) { |
1083 | if (free_params) { |
1084 | if (newcurparams) |
1085 | me->ourgame->free_params(newcurparams); |
1086 | if (newparams) |
1087 | me->ourgame->free_params(newparams); |
1088 | } |
1089 | return error; |
1090 | } |
1091 | } |
1092 | |
1093 | /* |
1094 | * Now we've got past all possible error points. Update the |
1095 | * midend itself. |
1096 | */ |
1097 | me->params = newparams; |
1098 | me->curparams = newcurparams; |
1099 | if (oldparams1) |
1100 | me->ourgame->free_params(oldparams1); |
1101 | if (oldparams2) |
1102 | me->ourgame->free_params(oldparams2); |
1103 | |
3af70dd4 |
1104 | sfree(me->desc); |
0a6892db |
1105 | sfree(me->privdesc); |
1106 | me->desc = me->privdesc = NULL; |
3af70dd4 |
1107 | sfree(me->seedstr); |
1108 | me->seedstr = NULL; |
1109 | |
1185e3c5 |
1110 | if (desc) { |
1185e3c5 |
1111 | me->desc = dupstr(desc); |
1112 | me->genmode = GOT_DESC; |
c566778e |
1113 | sfree(me->aux_info); |
6f2d8d7c |
1114 | me->aux_info = NULL; |
8b7938e7 |
1115 | } |
1116 | |
1185e3c5 |
1117 | if (seed) { |
1185e3c5 |
1118 | me->seedstr = dupstr(seed); |
1119 | me->genmode = GOT_SEED; |
1120 | } |
1121 | |
8b7938e7 |
1122 | return NULL; |
1123 | } |
1124 | |
dafd6cf6 |
1125 | char *midend_game_id(midend *me, char *id) |
1185e3c5 |
1126 | { |
1127 | return midend_game_id_int(me, id, DEF_PARAMS); |
1128 | } |
1129 | |
dafd6cf6 |
1130 | char *midend_get_game_id(midend *me) |
1131 | { |
1132 | char *parstr, *ret; |
1133 | |
1134 | parstr = me->ourgame->encode_params(me->curparams, FALSE); |
1135 | assert(parstr); |
1136 | assert(me->desc); |
1137 | ret = snewn(strlen(parstr) + strlen(me->desc) + 2, char); |
1138 | sprintf(ret, "%s:%s", parstr, me->desc); |
1139 | sfree(parstr); |
1140 | return ret; |
1141 | } |
1142 | |
1143 | char *midend_set_config(midend *me, int which, config_item *cfg) |
c8230524 |
1144 | { |
8b7938e7 |
1145 | char *error; |
c8230524 |
1146 | game_params *params; |
1147 | |
5928817c |
1148 | switch (which) { |
1149 | case CFG_SETTINGS: |
be8d5aa1 |
1150 | params = me->ourgame->custom_params(cfg); |
3ff276f2 |
1151 | error = me->ourgame->validate_params(params, TRUE); |
c8230524 |
1152 | |
5928817c |
1153 | if (error) { |
be8d5aa1 |
1154 | me->ourgame->free_params(params); |
5928817c |
1155 | return error; |
1156 | } |
c8230524 |
1157 | |
be8d5aa1 |
1158 | me->ourgame->free_params(me->params); |
5928817c |
1159 | me->params = params; |
1160 | break; |
1161 | |
1162 | case CFG_SEED: |
1185e3c5 |
1163 | case CFG_DESC: |
1164 | error = midend_game_id_int(me, cfg[0].sval, |
1165 | (which == CFG_SEED ? DEF_SEED : DEF_DESC)); |
5928817c |
1166 | if (error) |
1167 | return error; |
5928817c |
1168 | break; |
1169 | } |
c8230524 |
1170 | |
1171 | return NULL; |
1172 | } |
9b4b03d3 |
1173 | |
dafd6cf6 |
1174 | char *midend_text_format(midend *me) |
9b4b03d3 |
1175 | { |
1176 | if (me->ourgame->can_format_as_text && me->statepos > 0) |
28d0118c |
1177 | return me->ourgame->text_format(me->states[me->statepos-1].state); |
9b4b03d3 |
1178 | else |
1179 | return NULL; |
1180 | } |
2ac6d24e |
1181 | |
dafd6cf6 |
1182 | char *midend_solve(midend *me) |
2ac6d24e |
1183 | { |
1184 | game_state *s; |
df11cd4e |
1185 | char *msg, *movestr; |
2ac6d24e |
1186 | |
1187 | if (!me->ourgame->can_solve) |
1188 | return "This game does not support the Solve operation"; |
1189 | |
1190 | if (me->statepos < 1) |
1191 | return "No game set up to solve"; /* _shouldn't_ happen! */ |
1192 | |
821f9f32 |
1193 | msg = NULL; |
df11cd4e |
1194 | movestr = me->ourgame->solve(me->states[0].state, |
1195 | me->states[me->statepos-1].state, |
1196 | me->aux_info, &msg); |
821f9f32 |
1197 | if (!movestr) { |
1198 | if (!msg) |
1199 | msg = "Solve operation failed"; /* _shouldn't_ happen, but can */ |
2ac6d24e |
1200 | return msg; |
821f9f32 |
1201 | } |
df11cd4e |
1202 | s = me->ourgame->execute_move(me->states[me->statepos-1].state, movestr); |
1203 | assert(s); |
2ac6d24e |
1204 | |
1205 | /* |
28d0118c |
1206 | * Now enter the solved state as the next move. |
2ac6d24e |
1207 | */ |
1208 | midend_stop_anim(me); |
063f4810 |
1209 | while (me->nstates > me->statepos) { |
28d0118c |
1210 | me->ourgame->free_game(me->states[--me->nstates].state); |
063f4810 |
1211 | if (me->states[me->nstates].movestr) |
1212 | sfree(me->states[me->nstates].movestr); |
1213 | } |
2ac6d24e |
1214 | ensure(me); |
28d0118c |
1215 | me->states[me->nstates].state = s; |
a4393230 |
1216 | me->states[me->nstates].movestr = movestr; |
1217 | me->states[me->nstates].movetype = SOLVE; |
2ac6d24e |
1218 | me->statepos = ++me->nstates; |
07dfb697 |
1219 | if (me->ui) |
1220 | me->ourgame->changed_state(me->ui, |
1221 | me->states[me->statepos-2].state, |
1222 | me->states[me->statepos-1].state); |
9d6c3859 |
1223 | me->dir = +1; |
2705d374 |
1224 | if (me->ourgame->flags & SOLVE_ANIMATES) { |
9d6c3859 |
1225 | me->oldstate = me->ourgame->dup_game(me->states[me->statepos-2].state); |
1226 | me->anim_time = |
1227 | me->ourgame->anim_length(me->states[me->statepos-2].state, |
1228 | me->states[me->statepos-1].state, |
1229 | +1, me->ui); |
e80e7b71 |
1230 | me->anim_pos = 0.0; |
9d6c3859 |
1231 | } else { |
1232 | me->anim_time = 0.0; |
1233 | midend_finish_move(me); |
1234 | } |
2ac6d24e |
1235 | midend_redraw(me); |
48dcdd62 |
1236 | midend_set_timer(me); |
2ac6d24e |
1237 | return NULL; |
1238 | } |
48dcdd62 |
1239 | |
dafd6cf6 |
1240 | char *midend_rewrite_statusbar(midend *me, char *text) |
48dcdd62 |
1241 | { |
1242 | /* |
1243 | * An important special case is that we are occasionally called |
1244 | * with our own laststatus, to update the timer. |
1245 | */ |
1246 | if (me->laststatus != text) { |
1247 | sfree(me->laststatus); |
1248 | me->laststatus = dupstr(text); |
1249 | } |
1250 | |
1251 | if (me->ourgame->is_timed) { |
1252 | char timebuf[100], *ret; |
1253 | int min, sec; |
1254 | |
1255 | sec = me->elapsed; |
1256 | min = sec / 60; |
1257 | sec %= 60; |
1258 | sprintf(timebuf, "[%d:%02d] ", min, sec); |
1259 | |
1260 | ret = snewn(strlen(timebuf) + strlen(text) + 1, char); |
1261 | strcpy(ret, timebuf); |
1262 | strcat(ret, text); |
1263 | return ret; |
1264 | |
1265 | } else { |
1266 | return dupstr(text); |
1267 | } |
1268 | } |
a4393230 |
1269 | |
1270 | #define SERIALISE_MAGIC "Simon Tatham's Portable Puzzle Collection" |
1271 | #define SERIALISE_VERSION "1" |
1272 | |
dafd6cf6 |
1273 | void midend_serialise(midend *me, |
a4393230 |
1274 | void (*write)(void *ctx, void *buf, int len), |
1275 | void *wctx) |
1276 | { |
1277 | int i; |
1278 | |
1279 | /* |
1280 | * Each line of the save file contains three components. First |
1281 | * exactly 8 characters of header word indicating what type of |
1282 | * data is contained on the line; then a colon followed by a |
1283 | * decimal integer giving the length of the main string on the |
1284 | * line; then a colon followed by the string itself (exactly as |
1285 | * many bytes as previously specified, no matter what they |
1286 | * contain). Then a newline (of reasonably flexible form). |
1287 | */ |
1288 | #define wr(h,s) do { \ |
1289 | char hbuf[80]; \ |
1290 | char *str = (s); \ |
48d4740c |
1291 | sprintf(hbuf, "%-8.8s:%d:", (h), (int)strlen(str)); \ |
a4393230 |
1292 | write(wctx, hbuf, strlen(hbuf)); \ |
1293 | write(wctx, str, strlen(str)); \ |
1294 | write(wctx, "\n", 1); \ |
1295 | } while (0) |
1296 | |
1297 | /* |
1298 | * Magic string identifying the file, and version number of the |
1299 | * file format. |
1300 | */ |
1301 | wr("SAVEFILE", SERIALISE_MAGIC); |
1302 | wr("VERSION", SERIALISE_VERSION); |
1303 | |
1304 | /* |
1305 | * The game name. (Copied locally to avoid const annoyance.) |
1306 | */ |
1307 | { |
1308 | char *s = dupstr(me->ourgame->name); |
1309 | wr("GAME", s); |
1310 | sfree(s); |
1311 | } |
1312 | |
1313 | /* |
1314 | * The current long-term parameters structure, in full. |
1315 | */ |
1316 | if (me->params) { |
1317 | char *s = me->ourgame->encode_params(me->params, TRUE); |
1318 | wr("PARAMS", s); |
1319 | sfree(s); |
1320 | } |
1321 | |
1322 | /* |
1323 | * The current short-term parameters structure, in full. |
1324 | */ |
1325 | if (me->curparams) { |
1326 | char *s = me->ourgame->encode_params(me->curparams, TRUE); |
1327 | wr("CPARAMS", s); |
1328 | sfree(s); |
1329 | } |
1330 | |
1331 | /* |
1332 | * The current game description, the privdesc, and the random seed. |
1333 | */ |
1334 | if (me->seedstr) |
1335 | wr("SEED", me->seedstr); |
1336 | if (me->desc) |
1337 | wr("DESC", me->desc); |
1338 | if (me->privdesc) |
1339 | wr("PRIVDESC", me->privdesc); |
1340 | |
1341 | /* |
1342 | * The game's aux_info. We obfuscate this to prevent spoilers |
1343 | * (people are likely to run `head' or similar on a saved game |
1344 | * file simply to find out what it is, and don't necessarily |
1345 | * want to be told the answer to the puzzle!) |
1346 | */ |
1347 | if (me->aux_info) { |
1348 | unsigned char *s1; |
1349 | char *s2; |
1350 | int len; |
1351 | |
1352 | len = strlen(me->aux_info); |
1353 | s1 = snewn(len, unsigned char); |
1354 | memcpy(s1, me->aux_info, len); |
1355 | obfuscate_bitmap(s1, len*8, FALSE); |
1356 | s2 = bin2hex(s1, len); |
1357 | |
1358 | wr("AUXINFO", s2); |
1359 | |
1360 | sfree(s2); |
1361 | sfree(s1); |
1362 | } |
1363 | |
1364 | /* |
1365 | * Any required serialisation of the game_ui. |
1366 | */ |
1367 | if (me->ui) { |
1368 | char *s = me->ourgame->encode_ui(me->ui); |
1369 | if (s) { |
1370 | wr("UI", s); |
1371 | sfree(s); |
1372 | } |
1373 | } |
1374 | |
1375 | /* |
1376 | * The game time, if it's a timed game. |
1377 | */ |
1378 | if (me->ourgame->is_timed) { |
1379 | char buf[80]; |
1380 | sprintf(buf, "%g", me->elapsed); |
1381 | wr("TIME", buf); |
1382 | } |
1383 | |
1384 | /* |
1385 | * The length of, and position in, the states list. |
1386 | */ |
1387 | { |
1388 | char buf[80]; |
1389 | sprintf(buf, "%d", me->nstates); |
1390 | wr("NSTATES", buf); |
1391 | sprintf(buf, "%d", me->statepos); |
1392 | wr("STATEPOS", buf); |
1393 | } |
1394 | |
1395 | /* |
1396 | * For each state after the initial one (which we know is |
1397 | * constructed from either privdesc or desc), enough |
1398 | * information for execute_move() to reconstruct it from the |
1399 | * previous one. |
1400 | */ |
1401 | for (i = 1; i < me->nstates; i++) { |
1402 | assert(me->states[i].movetype != NEWGAME); /* only state 0 */ |
1403 | switch (me->states[i].movetype) { |
1404 | case MOVE: |
1405 | wr("MOVE", me->states[i].movestr); |
1406 | break; |
1407 | case SOLVE: |
1408 | wr("SOLVE", me->states[i].movestr); |
1409 | break; |
1410 | case RESTART: |
1411 | wr("RESTART", me->states[i].movestr); |
1412 | break; |
1413 | } |
1414 | } |
1415 | |
1416 | #undef wr |
1417 | } |
1418 | |
1419 | /* |
1420 | * This function returns NULL on success, or an error message. |
1421 | */ |
dafd6cf6 |
1422 | char *midend_deserialise(midend *me, |
a4393230 |
1423 | int (*read)(void *ctx, void *buf, int len), |
1424 | void *rctx) |
1425 | { |
1426 | int nstates = 0, statepos = -1, gotstates = 0; |
1427 | int started = FALSE; |
1428 | int i; |
1429 | |
1430 | char *val = NULL; |
1431 | /* Initially all errors give the same report */ |
1432 | char *ret = "Data does not appear to be a saved game file"; |
1433 | |
1434 | /* |
1435 | * We construct all the new state in local variables while we |
1436 | * check its sanity. Only once we have finished reading the |
1437 | * serialised data and detected no errors at all do we start |
dafd6cf6 |
1438 | * modifying stuff in the midend passed in. |
a4393230 |
1439 | */ |
1440 | char *seed = NULL, *parstr = NULL, *desc = NULL, *privdesc = NULL; |
1441 | char *auxinfo = NULL, *uistr = NULL, *cparstr = NULL; |
1442 | float elapsed = 0.0F; |
1443 | game_params *params = NULL, *cparams = NULL; |
1444 | game_ui *ui = NULL; |
1445 | struct midend_state_entry *states = NULL; |
1446 | |
1447 | /* |
1448 | * Loop round and round reading one key/value pair at a time |
1449 | * from the serialised stream, until we have enough game states |
1450 | * to finish. |
1451 | */ |
1452 | while (nstates <= 0 || statepos < 0 || gotstates < nstates-1) { |
1453 | char key[9], c; |
1454 | int len; |
1455 | |
1456 | do { |
1457 | if (!read(rctx, key, 1)) { |
1458 | /* unexpected EOF */ |
1459 | goto cleanup; |
1460 | } |
1461 | } while (key[0] == '\r' || key[0] == '\n'); |
1462 | |
1463 | if (!read(rctx, key+1, 8)) { |
1464 | /* unexpected EOF */ |
1465 | goto cleanup; |
1466 | } |
1467 | |
1468 | if (key[8] != ':') { |
1469 | if (started) |
1470 | ret = "Data was incorrectly formatted for a saved game file"; |
44f0599f |
1471 | goto cleanup; |
a4393230 |
1472 | } |
1473 | len = strcspn(key, ": "); |
1474 | assert(len <= 8); |
1475 | key[len] = '\0'; |
1476 | |
1477 | len = 0; |
1478 | while (1) { |
1479 | if (!read(rctx, &c, 1)) { |
1480 | /* unexpected EOF */ |
1481 | goto cleanup; |
1482 | } |
1483 | |
1484 | if (c == ':') { |
1485 | break; |
1486 | } else if (c >= '0' && c <= '9') { |
1487 | len = (len * 10) + (c - '0'); |
1488 | } else { |
1489 | if (started) |
1490 | ret = "Data was incorrectly formatted for a" |
1491 | " saved game file"; |
1492 | goto cleanup; |
1493 | } |
1494 | } |
1495 | |
1496 | val = snewn(len+1, char); |
1497 | if (!read(rctx, val, len)) { |
1498 | if (started) |
1499 | goto cleanup; |
1500 | } |
1501 | val[len] = '\0'; |
1502 | |
1503 | if (!started) { |
1504 | if (strcmp(key, "SAVEFILE") || strcmp(val, SERIALISE_MAGIC)) { |
1505 | /* ret already has the right message in it */ |
1506 | goto cleanup; |
1507 | } |
1508 | /* Now most errors are this one, unless otherwise specified */ |
1509 | ret = "Saved data ended unexpectedly"; |
1510 | started = TRUE; |
1511 | } else { |
1512 | if (!strcmp(key, "VERSION")) { |
1513 | if (strcmp(val, SERIALISE_VERSION)) { |
1514 | ret = "Cannot handle this version of the saved game" |
1515 | " file format"; |
1516 | goto cleanup; |
1517 | } |
1518 | } else if (!strcmp(key, "GAME")) { |
1519 | if (strcmp(val, me->ourgame->name)) { |
1520 | ret = "Save file is from a different game"; |
1521 | goto cleanup; |
1522 | } |
1523 | } else if (!strcmp(key, "PARAMS")) { |
1524 | sfree(parstr); |
1525 | parstr = val; |
1526 | val = NULL; |
1527 | } else if (!strcmp(key, "CPARAMS")) { |
1528 | sfree(cparstr); |
1529 | cparstr = val; |
1530 | val = NULL; |
1531 | } else if (!strcmp(key, "SEED")) { |
1532 | sfree(seed); |
1533 | seed = val; |
1534 | val = NULL; |
1535 | } else if (!strcmp(key, "DESC")) { |
1536 | sfree(desc); |
1537 | desc = val; |
1538 | val = NULL; |
1539 | } else if (!strcmp(key, "PRIVDESC")) { |
1540 | sfree(privdesc); |
1541 | privdesc = val; |
1542 | val = NULL; |
1543 | } else if (!strcmp(key, "AUXINFO")) { |
1544 | unsigned char *tmp; |
1545 | int len = strlen(val) / 2; /* length in bytes */ |
1546 | tmp = hex2bin(val, len); |
1547 | obfuscate_bitmap(tmp, len*8, TRUE); |
1548 | |
1549 | sfree(auxinfo); |
1550 | auxinfo = snewn(len + 1, char); |
1551 | memcpy(auxinfo, tmp, len); |
1552 | auxinfo[len] = '\0'; |
1553 | sfree(tmp); |
1554 | } else if (!strcmp(key, "UI")) { |
1555 | sfree(uistr); |
1556 | uistr = val; |
1557 | val = NULL; |
1558 | } else if (!strcmp(key, "TIME")) { |
871bf294 |
1559 | elapsed = atof(val); |
a4393230 |
1560 | } else if (!strcmp(key, "NSTATES")) { |
1561 | nstates = atoi(val); |
1562 | if (nstates <= 0) { |
1563 | ret = "Number of states in save file was negative"; |
1564 | goto cleanup; |
1565 | } |
1566 | if (states) { |
1567 | ret = "Two state counts provided in save file"; |
1568 | goto cleanup; |
1569 | } |
1570 | states = snewn(nstates, struct midend_state_entry); |
1571 | for (i = 0; i < nstates; i++) { |
1572 | states[i].state = NULL; |
1573 | states[i].movestr = NULL; |
1574 | states[i].movetype = NEWGAME; |
1575 | } |
1576 | } else if (!strcmp(key, "STATEPOS")) { |
1577 | statepos = atoi(val); |
1578 | } else if (!strcmp(key, "MOVE")) { |
1579 | gotstates++; |
1580 | states[gotstates].movetype = MOVE; |
1581 | states[gotstates].movestr = val; |
1582 | val = NULL; |
1583 | } else if (!strcmp(key, "SOLVE")) { |
1584 | gotstates++; |
1585 | states[gotstates].movetype = SOLVE; |
1586 | states[gotstates].movestr = val; |
1587 | val = NULL; |
1588 | } else if (!strcmp(key, "RESTART")) { |
1589 | gotstates++; |
1590 | states[gotstates].movetype = RESTART; |
1591 | states[gotstates].movestr = val; |
1592 | val = NULL; |
1593 | } |
1594 | } |
1595 | |
1596 | sfree(val); |
1597 | val = NULL; |
1598 | } |
1599 | |
1600 | params = me->ourgame->default_params(); |
1601 | me->ourgame->decode_params(params, parstr); |
3ff276f2 |
1602 | if (me->ourgame->validate_params(params, TRUE)) { |
a4393230 |
1603 | ret = "Long-term parameters in save file are invalid"; |
1604 | goto cleanup; |
1605 | } |
1606 | cparams = me->ourgame->default_params(); |
1607 | me->ourgame->decode_params(cparams, cparstr); |
3ff276f2 |
1608 | if (me->ourgame->validate_params(cparams, FALSE)) { |
a4393230 |
1609 | ret = "Short-term parameters in save file are invalid"; |
1610 | goto cleanup; |
1611 | } |
3ff276f2 |
1612 | if (seed && me->ourgame->validate_params(cparams, TRUE)) { |
1613 | /* |
1614 | * The seed's no use with this version, but we can perfectly |
1615 | * well use the rest of the data. |
1616 | */ |
1617 | sfree(seed); |
1618 | seed = NULL; |
1619 | } |
a4393230 |
1620 | if (!desc) { |
1621 | ret = "Game description in save file is missing"; |
1622 | goto cleanup; |
1623 | } else if (me->ourgame->validate_desc(params, desc)) { |
1624 | ret = "Game description in save file is invalid"; |
1625 | goto cleanup; |
1626 | } |
1627 | if (privdesc && me->ourgame->validate_desc(params, privdesc)) { |
1628 | ret = "Game private description in save file is invalid"; |
1629 | goto cleanup; |
1630 | } |
1631 | if (statepos < 0 || statepos >= nstates) { |
1632 | ret = "Game position in save file is out of range"; |
1633 | } |
1634 | |
1635 | states[0].state = me->ourgame->new_game(me, params, |
1636 | privdesc ? privdesc : desc); |
1637 | for (i = 1; i < nstates; i++) { |
1638 | assert(states[i].movetype != NEWGAME); |
1639 | switch (states[i].movetype) { |
1640 | case MOVE: |
1641 | case SOLVE: |
1642 | states[i].state = me->ourgame->execute_move(states[i-1].state, |
1643 | states[i].movestr); |
1644 | if (states[i].state == NULL) { |
1645 | ret = "Save file contained an invalid move"; |
1646 | goto cleanup; |
1647 | } |
1648 | break; |
1649 | case RESTART: |
1650 | if (me->ourgame->validate_desc(params, states[i].movestr)) { |
1651 | ret = "Save file contained an invalid restart move"; |
1652 | goto cleanup; |
1653 | } |
1654 | states[i].state = me->ourgame->new_game(me, params, |
1655 | states[i].movestr); |
1656 | break; |
1657 | } |
1658 | } |
1659 | |
1660 | ui = me->ourgame->new_ui(states[0].state); |
1661 | me->ourgame->decode_ui(ui, uistr); |
1662 | |
1663 | /* |
1664 | * Now we've run out of possible error conditions, so we're |
1665 | * ready to start overwriting the real data in the current |
1666 | * midend. We'll do this by swapping things with the local |
1667 | * variables, so that the same cleanup code will free the old |
1668 | * stuff. |
1669 | */ |
1670 | { |
1671 | char *tmp; |
1672 | |
1673 | tmp = me->desc; |
1674 | me->desc = desc; |
1675 | desc = tmp; |
1676 | |
1677 | tmp = me->privdesc; |
1678 | me->privdesc = privdesc; |
1679 | privdesc = tmp; |
1680 | |
1681 | tmp = me->seedstr; |
1682 | me->seedstr = seed; |
1683 | seed = tmp; |
1684 | |
1685 | tmp = me->aux_info; |
1686 | me->aux_info = auxinfo; |
1687 | auxinfo = tmp; |
1688 | } |
1689 | |
1690 | me->genmode = GOT_NOTHING; |
1691 | |
1692 | me->statesize = nstates; |
1693 | nstates = me->nstates; |
1694 | me->nstates = me->statesize; |
1695 | { |
1696 | struct midend_state_entry *tmp; |
1697 | tmp = me->states; |
1698 | me->states = states; |
1699 | states = tmp; |
1700 | } |
1701 | me->statepos = statepos; |
1702 | |
1703 | { |
1704 | game_params *tmp; |
1705 | |
1706 | tmp = me->params; |
1707 | me->params = params; |
1708 | params = tmp; |
1709 | |
1710 | tmp = me->curparams; |
1711 | me->curparams = cparams; |
1712 | cparams = tmp; |
1713 | } |
1714 | |
1715 | me->oldstate = NULL; |
1716 | me->anim_time = me->anim_pos = me->flash_time = me->flash_pos = 0.0F; |
1717 | me->dir = 0; |
1718 | |
1719 | { |
1720 | game_ui *tmp; |
1721 | |
1722 | tmp = me->ui; |
1723 | me->ui = ui; |
1724 | ui = tmp; |
1725 | } |
1726 | |
1727 | me->elapsed = elapsed; |
1728 | me->pressed_mouse_button = 0; |
1729 | |
1730 | midend_set_timer(me); |
1731 | |
871bf294 |
1732 | if (me->drawstate) |
dafd6cf6 |
1733 | me->ourgame->free_drawstate(me->drawing, me->drawstate); |
871bf294 |
1734 | me->drawstate = |
dafd6cf6 |
1735 | me->ourgame->new_drawstate(me->drawing, |
1736 | me->states[me->statepos-1].state); |
871bf294 |
1737 | midend_size_new_drawstate(me); |
1738 | |
a4393230 |
1739 | ret = NULL; /* success! */ |
1740 | |
1741 | cleanup: |
1742 | sfree(val); |
1743 | sfree(seed); |
1744 | sfree(parstr); |
1745 | sfree(cparstr); |
1746 | sfree(desc); |
1747 | sfree(privdesc); |
1748 | sfree(auxinfo); |
1749 | sfree(uistr); |
1750 | if (params) |
1751 | me->ourgame->free_params(params); |
1752 | if (cparams) |
1753 | me->ourgame->free_params(cparams); |
1754 | if (ui) |
1755 | me->ourgame->free_ui(ui); |
1756 | if (states) { |
1757 | int i; |
1758 | |
1759 | for (i = 0; i < nstates; i++) { |
1760 | if (states[i].state) |
1761 | me->ourgame->free_game(states[i].state); |
1762 | sfree(states[i].movestr); |
1763 | } |
1764 | sfree(states); |
1765 | } |
1766 | |
1767 | return ret; |
1768 | } |
dafd6cf6 |
1769 | |
1770 | char *midend_print_puzzle(midend *me, document *doc, int with_soln) |
1771 | { |
1772 | game_state *soln = NULL; |
1773 | |
1774 | if (me->statepos < 1) |
1775 | return "No game set up to print";/* _shouldn't_ happen! */ |
1776 | |
1777 | if (with_soln) { |
1778 | char *msg, *movestr; |
1779 | |
1780 | if (!me->ourgame->can_solve) |
1781 | return "This game does not support the Solve operation"; |
1782 | |
1783 | msg = "Solve operation failed";/* game _should_ overwrite on error */ |
1784 | movestr = me->ourgame->solve(me->states[0].state, |
1785 | me->states[me->statepos-1].state, |
1786 | me->aux_info, &msg); |
1787 | if (!movestr) |
1788 | return msg; |
1789 | soln = me->ourgame->execute_move(me->states[me->statepos-1].state, |
1790 | movestr); |
1791 | assert(soln); |
1792 | |
1793 | sfree(movestr); |
1794 | } else |
1795 | soln = NULL; |
1796 | |
1797 | /* |
1798 | * This call passes over ownership of the two game_states and |
1799 | * the game_params. Hence we duplicate the ones we want to |
1800 | * keep, and we don't have to bother freeing soln if it was |
1801 | * non-NULL. |
1802 | */ |
1803 | document_add_puzzle(doc, me->ourgame, |
1804 | me->ourgame->dup_params(me->curparams), |
1805 | me->ourgame->dup_game(me->states[0].state), soln); |
1806 | |
1807 | return NULL; |
1808 | } |