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Comparing deliantra/server/common/object.C (file contents):
Revision 1.226 by root, Sat May 3 08:50:30 2008 UTC vs.
Revision 1.235 by root, Tue May 6 20:00:12 2008 UTC

139 139
140/* Returns TRUE if every key_values in wants has a partner with the same value in has. */ 140/* Returns TRUE if every key_values in wants has a partner with the same value in has. */
141static bool 141static bool
142compare_ob_value_lists_one (const object *wants, const object *has) 142compare_ob_value_lists_one (const object *wants, const object *has)
143{ 143{
144 key_value *wants_field;
145
146 /* n-squared behaviour (see get_ob_key_link()), but I'm hoping both 144 /* n-squared behaviour (see kv_get), but I'm hoping both
147 * objects with lists are rare, and lists stay short. If not, use a 145 * objects with lists are rare, and lists stay short. If not, use a
148 * different structure or at least keep the lists sorted... 146 * different structure or at least keep the lists sorted...
149 */ 147 */
150 148
151 /* For each field in wants, */ 149 /* For each field in wants, */
152 for (wants_field = wants->key_values; wants_field; wants_field = wants_field->next) 150 for (key_value *kv = wants->key_values; kv; kv = kv->next)
153 { 151 if (has->kv_get (kv->key) != kv->value)
154 key_value *has_field; 152 return false;
155
156 /* Look for a field in has with the same key. */
157 has_field = get_ob_key_link (has, wants_field->key);
158
159 if (!has_field)
160 return 0; /* No field with that name. */
161
162 /* Found the matching field. */
163 if (has_field->value != wants_field->value)
164 return 0; /* Values don't match, so this half of the comparison is false. */
165
166 /* If we get here, we found a match. Now for the next field in wants. */
167 }
168 153
169 /* If we get here, every field in wants has a matching field in has. */ 154 /* If we get here, every field in wants has a matching field in has. */
170 return 1; 155 return true;
171} 156}
172 157
173/* Returns TRUE if ob1 has the same key_values as ob2. */ 158/* Returns TRUE if ob1 has the same key_values as ob2. */
174static bool 159static bool
175compare_ob_value_lists (const object *ob1, const object *ob2) 160compare_ob_value_lists (const object *ob1, const object *ob2)
176{ 161{
177 /* However, there may be fields in has which aren't partnered in wants, 162 /* However, there may be fields in has which aren't partnered in wants,
178 * so we need to run the comparison *twice*. :( 163 * so we need to run the comparison *twice*. :(
179 */ 164 */
180 return compare_ob_value_lists_one (ob1, ob2) && compare_ob_value_lists_one (ob2, ob1); 165 return compare_ob_value_lists_one (ob1, ob2)
166 && compare_ob_value_lists_one (ob2, ob1);
181} 167}
182 168
183/* Function examines the 2 objects given to it, and returns true if 169/* Function examines the 2 objects given to it, and returns true if
184 * they can be merged together. 170 * they can be merged together.
185 * 171 *
368 return 0; 354 return 0;
369} 355}
370 356
371// adjust weight per container type ("of holding") 357// adjust weight per container type ("of holding")
372static sint32 358static sint32
373weight_adjust (object *op, sint32 weight) 359weight_adjust_for (object *op, sint32 weight)
374{ 360{
375 return op->type == CONTAINER 361 return op->type == CONTAINER
376 ? lerp (weight, 0, 100, 0, 100 - op->stats.Str) 362 ? lerp (weight, 0, 100, 0, 100 - op->stats.Str)
377 : weight; 363 : weight;
378} 364}
384static void 370static void
385adjust_weight (object *op, sint32 weight) 371adjust_weight (object *op, sint32 weight)
386{ 372{
387 while (op) 373 while (op)
388 { 374 {
375 // adjust by actual difference to account for rounding errors
376 // i.e. (w2 - w1) / f != w2 / f - w1 / f and the latter is correct
389 weight = weight_adjust (op, weight); 377 weight = weight_adjust_for (op, op->carrying)
378 - weight_adjust_for (op, op->carrying - weight);
390 379
391 if (!weight) 380 if (!weight)
392 return; 381 return;
393 382
394 op->carrying += weight; 383 op->carrying += weight;
417 op->update_weight (); 406 op->update_weight ();
418 407
419 sum += op->total_weight (); 408 sum += op->total_weight ();
420 } 409 }
421 410
422 sum = weight_adjust (this, sum); 411 sum = weight_adjust_for (this, sum);
423 412
424 if (sum != carrying) 413 if (sum != carrying)
425 { 414 {
426 carrying = sum; 415 carrying = sum;
427 416
603 } 592 }
604 593
605 op->key_values = 0; 594 op->key_values = 0;
606} 595}
607 596
608object & 597/*
609object::operator =(const object &src) 598 * copy_to first frees everything allocated by the dst object,
599 * and then copies the contents of itself into the second
600 * object, allocating what needs to be allocated. Basically, any
601 * data that is malloc'd needs to be re-malloc/copied. Otherwise,
602 * if the first object is freed, the pointers in the new object
603 * will point at garbage.
604 */
605void
606object::copy_to (object *dst)
610{ 607{
611 remove (); 608 dst->remove ();
612
613 *(object_copy *)this = src; 609 *(object_copy *)dst = *this;
614
615 flag [FLAG_REMOVED] = true; 610 dst->flag [FLAG_REMOVED] = true;
616 611
617 /* Copy over key_values, if any. */ 612 /* Copy over key_values, if any. */
618 if (src.key_values) 613 if (key_values)
619 { 614 {
620 key_value *tail = 0; 615 key_value *tail = 0;
621 key_values = 0; 616 dst->key_values = 0;
622 617
623 for (key_value *i = src.key_values; i; i = i->next) 618 for (key_value *i = key_values; i; i = i->next)
624 { 619 {
625 key_value *new_link = new key_value; 620 key_value *new_link = new key_value;
626 621
627 new_link->next = 0; 622 new_link->next = 0;
628 new_link->key = i->key; 623 new_link->key = i->key;
629 new_link->value = i->value; 624 new_link->value = i->value;
630 625
631 /* Try and be clever here, too. */ 626 /* Try and be clever here, too. */
632 if (!key_values) 627 if (!dst->key_values)
633 { 628 {
634 key_values = new_link; 629 dst->key_values = new_link;
635 tail = new_link; 630 tail = new_link;
636 } 631 }
637 else 632 else
638 { 633 {
639 tail->next = new_link; 634 tail->next = new_link;
640 tail = new_link; 635 tail = new_link;
641 } 636 }
642 } 637 }
643 } 638 }
644}
645
646/*
647 * copy_to first frees everything allocated by the dst object,
648 * and then copies the contents of itself into the second
649 * object, allocating what needs to be allocated. Basically, any
650 * data that is malloc'd needs to be re-malloc/copied. Otherwise,
651 * if the first object is freed, the pointers in the new object
652 * will point at garbage.
653 */
654void
655object::copy_to (object *dst)
656{
657 *dst = *this;
658 639
659 if (speed < 0) 640 if (speed < 0)
660 dst->speed_left -= rndm (); 641 dst->speed_left -= rndm ();
661 642
662 dst->set_speed (dst->speed); 643 dst->set_speed (dst->speed);
971 nodrop = 1; 952 nodrop = 1;
972 953
973 alloc (); 954 alloc ();
974 in_memory = MAP_ACTIVE; 955 in_memory = MAP_ACTIVE;
975 } 956 }
957
958 ~freed_map ()
959 {
960 destroy ();
961 }
976} freed_map; // freed objects are moved here to avoid crashes 962} freed_map; // freed objects are moved here to avoid crashes
977 963
978void 964void
979object::do_destroy () 965object::do_destroy ()
980{ 966{
1131 1117
1132 /* Relink the object below us, if there is one */ 1118 /* Relink the object below us, if there is one */
1133 if (below) 1119 if (below)
1134 below->above = above; 1120 below->above = above;
1135 else 1121 else
1136 { 1122 ms.bot = above;
1137 /* Nothing below, which means we need to relink map object for this space
1138 * use translated coordinates in case some oddness with map tiling is
1139 * evident
1140 */
1141 if (GET_MAP_OB (map, x, y) != this)
1142 LOG (llevError, "remove_ob: GET_MAP_OB does not return object to be removed even though it appears to be on the bottom? %s\n", debug_desc ());
1143
1144 ms.bot = above; /* goes on above it. */
1145 }
1146 1123
1147 above = 0; 1124 above = 0;
1148 below = 0; 1125 below = 0;
1149 1126
1150 if (map->in_memory == MAP_SAVING) 1127 if (map->in_memory == MAP_SAVING)
1307 * of areas of callers (eg, anything that uses find_free_spot would now 1284 * of areas of callers (eg, anything that uses find_free_spot would now
1308 * need extra work 1285 * need extra work
1309 */ 1286 */
1310 if (!xy_normalise (m, op->x, op->y)) 1287 if (!xy_normalise (m, op->x, op->y))
1311 { 1288 {
1312 op->destroy (1); 1289 op->head_ ()->destroy (1);// remove head_ once all tail object destroyers found
1313 return 0; 1290 return 0;
1314 } 1291 }
1315 1292
1316 if (object *more = op->more) 1293 if (object *more = op->more)
1317 if (!insert_ob_in_map (more, m, originator, flag)) 1294 if (!insert_ob_in_map (more, m, originator, flag))
1604 } 1581 }
1605 else 1582 else
1606 { 1583 {
1607 decrease (nr); 1584 decrease (nr);
1608 1585
1609 object *op = object_create_clone (this); 1586 object *op = deep_clone ();
1610 op->nrof = nr; 1587 op->nrof = nr;
1611 return op; 1588 return op;
1612 } 1589 }
1613} 1590}
1614 1591
1835 LOG (llevError, "Present_arch called outside map.\n"); 1812 LOG (llevError, "Present_arch called outside map.\n");
1836 return NULL; 1813 return NULL;
1837 } 1814 }
1838 1815
1839 for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above) 1816 for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1840 if (tmp->arch == at) 1817 if (tmp->arch->archname == at->archname)
1841 return tmp; 1818 return tmp;
1842 1819
1843 return NULL; 1820 return NULL;
1844} 1821}
1845 1822
1909 * The first matching object is returned, or NULL if none. 1886 * The first matching object is returned, or NULL if none.
1910 */ 1887 */
1911object * 1888object *
1912present_arch_in_ob (const archetype *at, const object *op) 1889present_arch_in_ob (const archetype *at, const object *op)
1913{ 1890{
1914 for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below) 1891 for (object *tmp = op->inv; tmp; tmp = tmp->below)
1915 if (tmp->arch == at) 1892 if (tmp->arch->archname == at->archname)
1916 return tmp; 1893 return tmp;
1917 1894
1918 return NULL; 1895 return NULL;
1919} 1896}
1920 1897
2329 2306
2330/* 2307/*
2331 * create clone from object to another 2308 * create clone from object to another
2332 */ 2309 */
2333object * 2310object *
2334object_create_clone (object *asrc) 2311object::deep_clone ()
2335{ 2312{
2313 assert (("deep_clone called on non-head object", is_head ()));
2314
2336 object *dst = 0; 2315 object *dst = clone ();
2337 2316
2338 if (!asrc)
2339 return 0;
2340
2341 object *src = asrc->head_ ();
2342
2343 object *prev = 0; 2317 object *prev = dst;
2344 for (object *part = src; part; part = part->more) 2318 for (object *part = this->more; part; part = part->more)
2345 { 2319 {
2346 object *tmp = part->clone (); 2320 object *tmp = part->clone ();
2347
2348 tmp->x -= src->x;
2349 tmp->y -= src->y;
2350
2351 if (!part->head)
2352 {
2353 dst = tmp;
2354 tmp->head = 0;
2355 }
2356 else
2357 tmp->head = dst; 2321 tmp->head = dst;
2358
2359 tmp->more = 0;
2360
2361 if (prev)
2362 prev->more = tmp; 2322 prev->more = tmp;
2363
2364 prev = tmp; 2323 prev = tmp;
2365 } 2324 }
2366 2325
2367 for (object *item = src->inv; item; item = item->below) 2326 for (object *item = inv; item; item = item->below)
2368 insert_ob_in_ob (object_create_clone (item), dst); 2327 insert_ob_in_ob (item->deep_clone (), dst);
2369 2328
2370 return dst; 2329 return dst;
2371} 2330}
2372 2331
2373/* This returns the first object in who's inventory that 2332/* This returns the first object in who's inventory that
2382 return tmp; 2341 return tmp;
2383 2342
2384 return 0; 2343 return 0;
2385} 2344}
2386 2345
2387/* If ob has a field named key, return the link from the list, 2346const shstr &
2388 * otherwise return NULL. 2347object::kv_get (const shstr &key) const
2389 *
2390 * key must be a passed in shared string - otherwise, this won't
2391 * do the desired thing.
2392 */
2393key_value *
2394get_ob_key_link (const object *ob, const char *key)
2395{ 2348{
2396 for (key_value *link = ob->key_values; link; link = link->next) 2349 for (key_value *kv = key_values; kv; kv = kv->next)
2397 if (link->key == key) 2350 if (kv->key == key)
2398 return link;
2399
2400 return 0;
2401}
2402
2403/*
2404 * Returns the value of op has an extra_field for key, or NULL.
2405 *
2406 * The argument doesn't need to be a shared string.
2407 *
2408 * The returned string is shared.
2409 */
2410const char *
2411get_ob_key_value (const object *op, const char *const key)
2412{
2413 key_value *link;
2414 shstr_cmp canonical_key (key);
2415
2416 if (!canonical_key)
2417 {
2418 /* 1. There being a field named key on any object
2419 * implies there'd be a shared string to find.
2420 * 2. Since there isn't, no object has this field.
2421 * 3. Therefore, *this* object doesn't have this field.
2422 */
2423 return 0;
2424 }
2425
2426 /* This is copied from get_ob_key_link() above -
2427 * only 4 lines, and saves the function call overhead.
2428 */
2429 for (link = op->key_values; link; link = link->next)
2430 if (link->key == canonical_key)
2431 return link->value; 2351 return kv->value;
2432 2352
2433 return 0; 2353 return shstr_null;
2434} 2354}
2435 2355
2436/* 2356void
2437 * Updates the canonical_key in op to value. 2357object::kv_set (const shstr &key, const shstr &value)
2438 *
2439 * canonical_key is a shared string (value doesn't have to be).
2440 *
2441 * Unless add_key is TRUE, it won't add fields, only change the value of existing
2442 * keys.
2443 *
2444 * Returns TRUE on success.
2445 */
2446int
2447set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
2448{ 2358{
2449 key_value *field = NULL, *last = NULL; 2359 for (key_value *kv = key_values; kv; kv = kv->next)
2450 2360 if (kv->key == key)
2451 for (field = op->key_values; field != NULL; field = field->next)
2452 {
2453 if (field->key != canonical_key)
2454 { 2361 {
2455 last = field; 2362 kv->value = value;
2456 continue; 2363 return;
2457 } 2364 }
2458 2365
2459 if (value) 2366 key_value *kv = new key_value;
2460 field->value = value; 2367
2461 else 2368 kv->next = key_values;
2369 kv->key = key;
2370 kv->value = value;
2371
2372 key_values = kv;
2373}
2374
2375void
2376object::kv_del (const shstr &key)
2377{
2378 for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
2379 if ((*kvp)->key == key)
2462 { 2380 {
2463 /* Basically, if the archetype has this key set, 2381 key_value *kv = *kvp;
2464 * we need to store the null value so when we save 2382 *kvp = (*kvp)->next;
2465 * it, we save the empty value so that when we load, 2383 delete kv;
2466 * we get this value back again. 2384 return;
2467 */
2468 if (get_ob_key_link (op->arch, canonical_key))
2469 field->value = 0;
2470 else
2471 {
2472 if (last)
2473 last->next = field->next;
2474 else
2475 op->key_values = field->next;
2476
2477 delete field;
2478 }
2479 } 2385 }
2480 return TRUE;
2481 }
2482 /* IF we get here, key doesn't exist */
2483
2484 /* No field, we'll have to add it. */
2485
2486 if (!add_key)
2487 return FALSE;
2488
2489 /* There isn't any good reason to store a null
2490 * value in the key/value list. If the archetype has
2491 * this key, then we should also have it, so shouldn't
2492 * be here. If user wants to store empty strings,
2493 * should pass in ""
2494 */
2495 if (value == NULL)
2496 return TRUE;
2497
2498 field = new key_value;
2499
2500 field->key = canonical_key;
2501 field->value = value;
2502 /* Usual prepend-addition. */
2503 field->next = op->key_values;
2504 op->key_values = field;
2505
2506 return TRUE;
2507}
2508
2509/*
2510 * Updates the key in op to value.
2511 *
2512 * If add_key is FALSE, this will only update existing keys,
2513 * and not add new ones.
2514 * In general, should be little reason FALSE is ever passed in for add_key
2515 *
2516 * Returns TRUE on success.
2517 */
2518int
2519set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2520{
2521 shstr key_ (key);
2522
2523 return set_ob_key_value_s (op, key_, value, add_key);
2524} 2386}
2525 2387
2526object::depth_iterator::depth_iterator (object *container) 2388object::depth_iterator::depth_iterator (object *container)
2527: iterator_base (container) 2389: iterator_base (container)
2528{ 2390{

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