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Comparing deliantra/server/common/arch.C (file contents):
Revision 1.46 by root, Mon Apr 16 06:23:39 2007 UTC vs.
Revision 1.53 by root, Tue Apr 17 18:40:31 2007 UTC

… …
275 } 275 }
276 276
277 return 0; 277 return 0;
278} 278}
279 279
280void
281init_archetypes (void)
282{
283 load_archetypes ();
284
285 empty_archetype = archetype::find ("empty_archetype");
286}
287
288archetype::archetype () 280archetype::archetype ()
289{ 281{
290 clone.arch = this; 282 clone.arch = this;
291 283
292 CLEAR_FLAG (&clone, FLAG_FREED); /* This shouldn't matter, since copy_to */ 284 CLEAR_FLAG (&clone, FLAG_FREED); /* This shouldn't matter, since copy_to */
… …
319overwrite (archetype *at, object *op) 311overwrite (archetype *at, object *op)
320{ 312{
321 at->clone = *op; 313 at->clone = *op;
322 314
323 at->clone.arch = at; 315 at->clone.arch = at;
324 //TODO: inv et al. 316 at->clone.inv = op->inv; op->inv = 0;
317
318 op->destroy ();
325} 319}
326 320
327archetype * 321archetype *
328archetype::read (object_thawer &f) 322archetype::read (object_thawer &f)
329{ 323{
330 assert (f.kw == KW_object); 324 assert (f.kw == KW_object);
331 325
326 loading_arch = true; // hack to tell parse_kv et al. to behave
327
328 typedef std::pair<archetype *, object *> part;
329 std::vector<part> parts;
330
331 coroapi::cede_to_tick_every (100);
332
333 for (;;)
334 {
332 archetype *head = get (f.get_str ()); 335 archetype *at = get (f.get_str ());
333 unlink (head);
334 object *op = object::create (); 336 object *op = object::create ();
335 337
336 if (!op->parse_kv (f)) 338 if (!op->parse_kv (f))
337 { 339 goto fail;
338 op->destroy (true);
339 // leak head
340 return 0;
341 }
342 340
343 overwrite (head, op); 341 parts.push_back (std::make_pair (at, op));
344 op->destroy ();
345 342
346 for (archetype *prev = head; f.kw == KW_more; ) 343 if (f.kw != KW_more)
347 { 344 break;
345
348 f.next (); 346 f.next ();
349 assert (f.kw == KW_object); 347 assert (f.kw == KW_object);
348 }
350 349
351 archetype *more = get (f.get_str ()); 350 {
352 unlink (more); 351 archetype *head = parts.front ().first;
353 object *op = object::create ();
354 352
355 if (!op->parse_kv (f)) 353 // check that all archetypes belong to the same object or are heads
354 for (auto (p, parts.begin ()); p != parts.end (); ++p)
355 {
356 archetype *at = p->first;
357
358 if (at->head != head && at->head)
356 { 359 {
357 op->destroy (true); 360 LOG (llevError, "%s: unable to overwrite foreign non-head archetype with non-head archetype\n", &at->name);
358 // leak head more* 361 goto fail;
359 return 0;
360 } 362 }
361 363
362 overwrite (more, op); 364 if (at->next && at != head)
363 op->destroy (); 365 {
364 366 LOG (llevError, "%s: unable to overwrite foreign head archetype with non-head archetype\n", &at->name);
365 if (more->clone.x > head->tail_x) head->tail_x = more->clone.x; 367 goto fail;
366 if (more->clone.y > head->tail_y) head->tail_y = more->clone.y; 368 }
367
368 more->head = head;
369 more->clone.head = &head->clone;
370 prev->more = more;
371 prev->clone.more = &more->clone;
372
373 prev = more;
374 } 369 }
375 370
376 if (!head->next) 371 // sever chain of existing head object
372 for (archetype *more, *at = head; at; at = more)
377 { 373 {
374 more = at->more;
375
376 at->head = 0;
377 at->more = 0;
378 }
379
380 // replace/update head
381 overwrite (head, parts.front ().second);
382 head->tail_x = 0;
383 head->tail_y = 0;
384
385 // link into list of heads, if not already there
386 if (!head->linked)
387 {
388 head->linked = true;
378 head->next = first_archetype; 389 head->next = first_archetype;
379 first_archetype = head; 390 first_archetype = head;
380 } 391 }
381 392
393 // reassemble new chain
394 archetype *prev = head;
395 for (auto (p, parts.begin () + 1); p != parts.end (); ++p)
396 {
397 archetype *at = p->first;
398 overwrite (at, p->second);
399
400 if (at->clone.x > head->tail_x) head->tail_x = at->clone.x;
401 if (at->clone.y > head->tail_y) head->tail_y = at->clone.y;
402
403 at->head = head;
404 at->clone.head = &head->clone;
405 prev->more = at;
406 prev->clone.more = &at->clone;
407
408 prev = at;
409 }
410
411 loading_arch = false;
382 return head; 412 return head;
383} 413 }
384 414
385/* 415fail:
386 * Reads/parses the archetype-file, and copies into a linked list 416 for (auto (p, parts.begin ()); p != parts.end (); ++p)
387 * of archetype-structures. 417 p->second->destroy (true);
388 */
389static bool
390load_archetypes (object_thawer &f)
391{
392 for (;;)
393 {
394 switch (f.kw)
395 {
396 case KW_object:
397 loading_arch = true;
398 if (!archetype::read (f))
399 {
400 loading_arch = false;
401 return false;
402 }
403 418
404 loading_arch = false; 419 loading_arch = false;
405 continue; 420 return 0;
406
407 case KW_EOF:
408 return true;
409
410 default:
411 if (!f.parse_error ("archetypes file"))
412 return false;
413 }
414
415 f.next ();
416 }
417} 421}
418 422
419/* 423/*
420 * First initialises the archtype hash-table (init_archetable()). 424 * Initialize global archtype pointers:
421 * Reads and parses the archetype file (with the first and second-pass
422 * functions).
423 * Then initialises treasures by calling load_treasures().
424 */ 425 */
425void 426void
426load_archetypes (void) 427init_archetype_pointers ()
427{ 428{
428 char filename[MAX_BUF]; 429 ring_arch = archetype::find ("ring");
429 430 amulet_arch = archetype::find ("amulet");
430 sprintf (filename, "%s/%s", settings.datadir, settings.archetypes); 431 staff_arch = archetype::find ("staff");
431 LOG (llevDebug, "Reading archetypes from %s:\n", filename); 432 crown_arch = archetype::find ("crown");
432 433 empty_archetype = archetype::find ("empty_archetype");
433 object_thawer f (filename);
434
435 f.next ();
436
437 if (!load_archetypes (f))
438 cleanup ("unable to load archetypes");
439
440 warn_archetypes = 1;
441} 434}
442 435
443/* 436/*
444 * Creates and returns a new object which is a copy of the given archetype. 437 * Creates and returns a new object which is a copy of the given archetype.
445 * This function returns NULL on failure. 438 * This function returns NULL on failure.
… …
447object * 440object *
448arch_to_object (archetype *at) 441arch_to_object (archetype *at)
449{ 442{
450 if (!at) 443 if (!at)
451 { 444 {
452 if (warn_archetypes)
453 LOG (llevError, "Couldn't find archetype.\n"); 445 LOG (llevError, "Couldn't find archetype.\n");
454
455 return NULL; 446 return 0;
456 } 447 }
457 448
458 object *op = at->clone.clone (); 449 object *op = at->clone.clone ();
459 op->arch = at; 450 op->arch = at;
460 op->instantiate (); 451 op->instantiate ();
452
461 return op; 453 return op;
462} 454}
463 455
464/* 456/*
465 * Creates an object. This function is called by get_archetype() 457 * Creates an object. This function is called by get_archetype()
… …
494 486
495 return arch_to_object (at); 487 return arch_to_object (at);
496} 488}
497 489
498/* 490/*
499 * Hash-function used by the arch-hashtable.
500 */
501
502unsigned long
503hasharch (const char *str, int tablesize)
504{
505 unsigned long hash = 0;
506 unsigned int i = 0;
507 const char *p;
508
509 /* use the one-at-a-time hash function, which supposedly is
510 * better than the djb2-like one used by perl5.005, but
511 * certainly is better then the bug used here before.
512 * see http://burtleburtle.net/bob/hash/doobs.html
513 */
514 for (p = str; i < MAXSTRING && *p; p++, i++)
515 {
516 hash += *p;
517 hash += hash << 10;
518 hash ^= hash >> 6;
519 }
520
521 hash += hash << 3;
522 hash ^= hash >> 11;
523 hash += hash << 15;
524
525 return hash % tablesize;
526}
527
528/*
529 * Finds, using the hashtable, which archetype matches the given name. 491 * Finds, using the hashtable, which archetype matches the given name.
530 * returns a pointer to the found archetype, otherwise NULL. 492 * returns a pointer to the found archetype, otherwise NULL.
531 */ 493 */
532archetype * 494archetype *
533archetype::find (const char *name) 495archetype::find (const char *name)
534{ 496{
535 if (!name) 497 if (!name)
536 return 0; 498 return 0;
537 499
538 AUTODECL (i, ht.find (name)); 500 auto (i, ht.find (name));
539 501
540 if (i == ht.end ()) 502 if (i == ht.end ())
541 return 0; 503 return 0;
542 else 504 else
543 return i->second; 505 return i->second;

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