ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/deliantra/server/common/object.C
(Generate patch)

Comparing deliantra/server/common/object.C (file contents):
Revision 1.225 by root, Fri May 2 20:28:44 2008 UTC vs.
Revision 1.233 by root, Tue May 6 18:47:32 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;
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{
1160 * appropriately. 1146 * appropriately.
1161 */ 1147 */
1162 pl->close_container (); 1148 pl->close_container ();
1163 1149
1164 //TODO: the floorbox prev/next might need updating 1150 //TODO: the floorbox prev/next might need updating
1165 esrv_del_item (pl->contr, count); 1151 //esrv_del_item (pl->contr, count);
1152 //TODO: update floorbox to preserve ordering
1153 if (pl->contr->ns)
1154 pl->contr->ns->floorbox_update ();
1166 } 1155 }
1167 1156
1168 for (tmp = ms.bot; tmp; tmp = tmp->above) 1157 for (tmp = ms.bot; tmp; tmp = tmp->above)
1169 { 1158 {
1170 /* No point updating the players look faces if he is the object 1159 /* No point updating the players look faces if he is the object
1304 * of areas of callers (eg, anything that uses find_free_spot would now 1293 * of areas of callers (eg, anything that uses find_free_spot would now
1305 * need extra work 1294 * need extra work
1306 */ 1295 */
1307 if (!xy_normalise (m, op->x, op->y)) 1296 if (!xy_normalise (m, op->x, op->y))
1308 { 1297 {
1309 op->destroy (1); 1298 op->head_ ()->destroy (1);// remove head_ once all tail object destroyers found
1310 return 0; 1299 return 0;
1311 } 1300 }
1312 1301
1313 if (object *more = op->more) 1302 if (object *more = op->more)
1314 if (!insert_ob_in_map (more, m, originator, flag)) 1303 if (!insert_ob_in_map (more, m, originator, flag))
1468 1457
1469 op->map->dirty = true; 1458 op->map->dirty = true;
1470 1459
1471 if (object *pl = ms.player ()) 1460 if (object *pl = ms.player ())
1472 //TODO: the floorbox prev/next might need updating 1461 //TODO: the floorbox prev/next might need updating
1473 esrv_send_item (pl, op); 1462 //esrv_send_item (pl, op);
1463 //TODO: update floorbox to preserve ordering
1464 if (pl->contr->ns)
1465 pl->contr->ns->floorbox_update ();
1474 1466
1475 /* If this object glows, it may affect lighting conditions that are 1467 /* If this object glows, it may affect lighting conditions that are
1476 * visible to others on this map. But update_all_los is really 1468 * visible to others on this map. But update_all_los is really
1477 * an inefficient way to do this, as it means los for all players 1469 * an inefficient way to do this, as it means los for all players
1478 * on the map will get recalculated. The players could very well 1470 * on the map will get recalculated. The players could very well
1598 } 1590 }
1599 else 1591 else
1600 { 1592 {
1601 decrease (nr); 1593 decrease (nr);
1602 1594
1603 object *op = object_create_clone (this); 1595 object *op = deep_clone ();
1604 op->nrof = nr; 1596 op->nrof = nr;
1605 return op; 1597 return op;
1606 } 1598 }
1607} 1599}
1608 1600
1829 LOG (llevError, "Present_arch called outside map.\n"); 1821 LOG (llevError, "Present_arch called outside map.\n");
1830 return NULL; 1822 return NULL;
1831 } 1823 }
1832 1824
1833 for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above) 1825 for (object *tmp = m->at (x, y).bot; tmp; tmp = tmp->above)
1834 if (tmp->arch == at) 1826 if (tmp->arch->archname == at->archname)
1835 return tmp; 1827 return tmp;
1836 1828
1837 return NULL; 1829 return NULL;
1838} 1830}
1839 1831
1903 * The first matching object is returned, or NULL if none. 1895 * The first matching object is returned, or NULL if none.
1904 */ 1896 */
1905object * 1897object *
1906present_arch_in_ob (const archetype *at, const object *op) 1898present_arch_in_ob (const archetype *at, const object *op)
1907{ 1899{
1908 for (object *tmp = op->inv; tmp != NULL; tmp = tmp->below) 1900 for (object *tmp = op->inv; tmp; tmp = tmp->below)
1909 if (tmp->arch == at) 1901 if (tmp->arch->archname == at->archname)
1910 return tmp; 1902 return tmp;
1911 1903
1912 return NULL; 1904 return NULL;
1913} 1905}
1914 1906
2323 2315
2324/* 2316/*
2325 * create clone from object to another 2317 * create clone from object to another
2326 */ 2318 */
2327object * 2319object *
2328object_create_clone (object *asrc) 2320object::deep_clone ()
2329{ 2321{
2322 assert (("deep_clone called on non-head object", is_head ()));
2323
2330 object *dst = 0; 2324 object *dst = clone ();
2331 2325
2332 if (!asrc)
2333 return 0;
2334
2335 object *src = asrc->head_ ();
2336
2337 object *prev = 0; 2326 object *prev = dst;
2338 for (object *part = src; part; part = part->more) 2327 for (object *part = this->more; part; part = part->more)
2339 { 2328 {
2340 object *tmp = part->clone (); 2329 object *tmp = part->clone ();
2341
2342 tmp->x -= src->x;
2343 tmp->y -= src->y;
2344
2345 if (!part->head)
2346 {
2347 dst = tmp;
2348 tmp->head = 0;
2349 }
2350 else
2351 tmp->head = dst; 2330 tmp->head = dst;
2352
2353 tmp->more = 0;
2354
2355 if (prev)
2356 prev->more = tmp; 2331 prev->more = tmp;
2357
2358 prev = tmp; 2332 prev = tmp;
2359 } 2333 }
2360 2334
2361 for (object *item = src->inv; item; item = item->below) 2335 for (object *item = inv; item; item = item->below)
2362 insert_ob_in_ob (object_create_clone (item), dst); 2336 insert_ob_in_ob (item->deep_clone (), dst);
2363 2337
2364 return dst; 2338 return dst;
2365} 2339}
2366 2340
2367/* This returns the first object in who's inventory that 2341/* This returns the first object in who's inventory that
2376 return tmp; 2350 return tmp;
2377 2351
2378 return 0; 2352 return 0;
2379} 2353}
2380 2354
2381/* If ob has a field named key, return the link from the list, 2355const shstr &
2382 * otherwise return NULL. 2356object::kv_get (const shstr &key) const
2383 *
2384 * key must be a passed in shared string - otherwise, this won't
2385 * do the desired thing.
2386 */
2387key_value *
2388get_ob_key_link (const object *ob, const char *key)
2389{ 2357{
2390 for (key_value *link = ob->key_values; link; link = link->next) 2358 for (key_value *kv = key_values; kv; kv = kv->next)
2391 if (link->key == key) 2359 if (kv->key == key)
2392 return link;
2393
2394 return 0;
2395}
2396
2397/*
2398 * Returns the value of op has an extra_field for key, or NULL.
2399 *
2400 * The argument doesn't need to be a shared string.
2401 *
2402 * The returned string is shared.
2403 */
2404const char *
2405get_ob_key_value (const object *op, const char *const key)
2406{
2407 key_value *link;
2408 shstr_cmp canonical_key (key);
2409
2410 if (!canonical_key)
2411 {
2412 /* 1. There being a field named key on any object
2413 * implies there'd be a shared string to find.
2414 * 2. Since there isn't, no object has this field.
2415 * 3. Therefore, *this* object doesn't have this field.
2416 */
2417 return 0;
2418 }
2419
2420 /* This is copied from get_ob_key_link() above -
2421 * only 4 lines, and saves the function call overhead.
2422 */
2423 for (link = op->key_values; link; link = link->next)
2424 if (link->key == canonical_key)
2425 return link->value; 2360 return kv->value;
2426 2361
2427 return 0; 2362 return shstr_null;
2428} 2363}
2429 2364
2430/* 2365void
2431 * Updates the canonical_key in op to value. 2366object::kv_set (const shstr &key, const shstr &value)
2432 *
2433 * canonical_key is a shared string (value doesn't have to be).
2434 *
2435 * Unless add_key is TRUE, it won't add fields, only change the value of existing
2436 * keys.
2437 *
2438 * Returns TRUE on success.
2439 */
2440int
2441set_ob_key_value_s (object *op, const shstr & canonical_key, const char *value, int add_key)
2442{ 2367{
2443 key_value *field = NULL, *last = NULL; 2368 for (key_value *kv = key_values; kv; kv = kv->next)
2444 2369 if (kv->key == key)
2445 for (field = op->key_values; field != NULL; field = field->next)
2446 {
2447 if (field->key != canonical_key)
2448 { 2370 {
2449 last = field; 2371 kv->value = value;
2450 continue; 2372 return;
2451 } 2373 }
2452 2374
2453 if (value) 2375 key_value *kv = new key_value;
2454 field->value = value; 2376
2455 else 2377 kv->next = key_values;
2378 kv->key = key;
2379 kv->value = value;
2380
2381 key_values = kv;
2382}
2383
2384void
2385object::kv_del (const shstr &key)
2386{
2387 for (key_value **kvp = &key_values; *kvp; kvp = &(*kvp)->next)
2388 if ((*kvp)->key == key)
2456 { 2389 {
2457 /* Basically, if the archetype has this key set, 2390 key_value *kv = *kvp;
2458 * we need to store the null value so when we save 2391 *kvp = (*kvp)->next;
2459 * it, we save the empty value so that when we load, 2392 delete kv;
2460 * we get this value back again. 2393 return;
2461 */
2462 if (get_ob_key_link (op->arch, canonical_key))
2463 field->value = 0;
2464 else
2465 {
2466 if (last)
2467 last->next = field->next;
2468 else
2469 op->key_values = field->next;
2470
2471 delete field;
2472 }
2473 } 2394 }
2474 return TRUE;
2475 }
2476 /* IF we get here, key doesn't exist */
2477
2478 /* No field, we'll have to add it. */
2479
2480 if (!add_key)
2481 return FALSE;
2482
2483 /* There isn't any good reason to store a null
2484 * value in the key/value list. If the archetype has
2485 * this key, then we should also have it, so shouldn't
2486 * be here. If user wants to store empty strings,
2487 * should pass in ""
2488 */
2489 if (value == NULL)
2490 return TRUE;
2491
2492 field = new key_value;
2493
2494 field->key = canonical_key;
2495 field->value = value;
2496 /* Usual prepend-addition. */
2497 field->next = op->key_values;
2498 op->key_values = field;
2499
2500 return TRUE;
2501}
2502
2503/*
2504 * Updates the key in op to value.
2505 *
2506 * If add_key is FALSE, this will only update existing keys,
2507 * and not add new ones.
2508 * In general, should be little reason FALSE is ever passed in for add_key
2509 *
2510 * Returns TRUE on success.
2511 */
2512int
2513set_ob_key_value (object *op, const char *key, const char *value, int add_key)
2514{
2515 shstr key_ (key);
2516
2517 return set_ob_key_value_s (op, key_, value, add_key);
2518} 2395}
2519 2396
2520object::depth_iterator::depth_iterator (object *container) 2397object::depth_iterator::depth_iterator (object *container)
2521: iterator_base (container) 2398: iterator_base (container)
2522{ 2399{

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines