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Comparing deliantra/server/common/arch.C (file contents):
Revision 1.47 by root, Mon Apr 16 10:14:25 2007 UTC vs.
Revision 1.70 by root, Tue Oct 16 00:30:24 2007 UTC

1/* 1/*
2 * CrossFire, A Multiplayer game for X-windows 2 * This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
3 * 3 *
4 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team 4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
5 * Copyright (C) 2002 Mark Wedel & Crossfire Development Team 5 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
6 * Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992,2007 Frank Tore Johansen
7 * 7 *
8 * This program is free software; you can redistribute it and/or modify 8 * Crossfire TRT is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version. 11 * (at your option) any later version.
12 * 12 *
13 * This program is distributed in the hope that it will be useful, 13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details. 16 * GNU General Public License for more details.
17 * 17 *
18 * You should have received a copy of the GNU General Public License 18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software 19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * 20 *
22 * The authors can be reached via e-mail at <crossfire@schmorp.de> 21 * The authors can be reached via e-mail to <crossfire@schmorp.de>
23 */ 22 */
24 23
25#include <cassert> 24#include <cassert>
26 25
27#include <global.h> 26#include <global.h>
37 * return an object. Perhaps those should be called 'archob' functions 36 * return an object. Perhaps those should be called 'archob' functions
38 * to denote they return an object derived from the archetype. 37 * to denote they return an object derived from the archetype.
39 * MSW 2003-04-29 38 * MSW 2003-04-29
40 */ 39 */
41 40
42bool loading_arch; // ugly flag to object laoder etc. to suppress/request special processing 41archetype *loading_arch; // ugly flag to object laoder etc. to suppress/request special processing
43 42
44// the hashtable 43// the hashtable
45typedef std::tr1::unordered_map 44typedef std::tr1::unordered_map
46 < 45 <
47 const char *, 46 const char *,
50 str_equal, 49 str_equal,
51 slice_allocator< std::pair<const char *const, arch_ptr> > 50 slice_allocator< std::pair<const char *const, arch_ptr> >
52 > HT; 51 > HT;
53 52
54static HT ht (5000); 53static HT ht (5000);
55static std::vector<archetype *> archetypes; 54archvec archetypes;
56 55
57/** 56/**
58 * GROS - This function retrieves an archetype given the name that appears 57 * GROS - This function retrieves an archetype given the name that appears
59 * during the game (for example, "writing pen" instead of "stylus"). 58 * during the game (for example, "writing pen" instead of "stylus").
60 * It does not use the hashtable system, but browse the whole archlist each time. 59 * It does not use the hashtable system, but browse the whole archlist each time.
68archetype * 67archetype *
69find_archetype_by_object_name (const char *name) 68find_archetype_by_object_name (const char *name)
70{ 69{
71 shstr_cmp name_cmp (name); 70 shstr_cmp name_cmp (name);
72 71
73 for (archetype *at = first_archetype; at; at = at->next) 72 for_all_archetypes (at)
74 if (at->clone.name == name_cmp) 73 if (at->name == name_cmp)
75 return at; 74 return at;
76 75
77 return 0; 76 return 0;
78} 77}
79 78
85archetype * 84archetype *
86find_archetype_by_object_type_name (int type, const char *name) 85find_archetype_by_object_type_name (int type, const char *name)
87{ 86{
88 shstr_cmp name_cmp (name); 87 shstr_cmp name_cmp (name);
89 88
90 for (archetype *at = first_archetype; at; at = at->next) 89 for_all_archetypes (at)
91 if (at->clone.name == name_cmp && at->clone.type == type) 90 if (at->name == name_cmp && at->type == type)
92 return at; 91 return at;
93 92
94 return 0; 93 return 0;
95} 94}
96 95
102object * 101object *
103get_archetype_by_skill_name (const char *skill, int type) 102get_archetype_by_skill_name (const char *skill, int type)
104{ 103{
105 shstr_cmp skill_cmp (skill); 104 shstr_cmp skill_cmp (skill);
106 105
107 for (archetype *at = first_archetype; at; at = at->next) 106 for_all_archetypes (at)
108 if (at->clone.skill == skill_cmp && (type == -1 || type == at->clone.type)) 107 if (at->skill == skill_cmp && (type == -1 || type == at->type))
109 return arch_to_object (at); 108 return arch_to_object (at);
110 109
111 return 0; 110 return 0;
112} 111}
113 112
119 * (eg, skills) 118 * (eg, skills)
120 */ 119 */
121archetype * 120archetype *
122get_archetype_by_type_subtype (int type, int subtype) 121get_archetype_by_type_subtype (int type, int subtype)
123{ 122{
124 for (archetype *at = first_archetype; at; at = at->next) 123 for_all_archetypes (at)
125 if ((type == -1 || type == at->clone.type) && (subtype == -1 || subtype == at->clone.subtype)) 124 if ((type == -1 || type == at->type) && (subtype == -1 || subtype == at->subtype))
126 return at; 125 return at;
127 126
128 return 0; 127 return 0;
129} 128}
130 129
157 } 156 }
158 157
159 return create_singularity (name); 158 return create_singularity (name);
160} 159}
161 160
162 /* This is a subset of the parse_id command. Basically, name can be 161/* This is a subset of the parse_id command. Basically, name can be
163 * a string seperated lists of things to match, with certain keywords. 162 * a string seperated lists of things to match, with certain keywords.
164 * pl is the player (only needed to set count properly) 163 * pl is the player (only needed to set count properly)
165 * op is the item we are trying to match. Calling function takes care 164 * op is the item we are trying to match. Calling function takes care
166 * of what action might need to be done and if it is valid 165 * of what action might need to be done and if it is valid
167 * (pickup, drop, etc.) Return NONZERO if we have a match. A higher 166 * (pickup, drop, etc.) Return NONZERO if we have a match. A higher
168 * value means a better match. 0 means no match. 167 * value means a better match. 0 means no match.
169 * 168 *
170 * Brief outline of the procedure: 169 * Brief outline of the procedure:
171 * We take apart the name variable into the individual components. 170 * We take apart the name variable into the individual components.
172 * cases for 'all' and unpaid are pretty obvious. 171 * cases for 'all' and unpaid are pretty obvious.
173 * Next, we check for a count (either specified in name, or in the 172 * Next, we check for a count (either specified in name, or in the
174 * player object.) 173 * player object.)
175 * If count is 1, make a quick check on the name. 174 * If count is 1, make a quick check on the name.
176 * IF count is >1, we need to make plural name. Return if match. 175 * IF count is >1, we need to make plural name. Return if match.
177 * Last, make a check on the full name. 176 * Last, make a check on the full name.
178 */ 177 */
179int 178int
180item_matched_string (object *pl, object *op, const char *name) 179item_matched_string (object *pl, object *op, const char *name)
181{ 180{
182 char *cp, local_name[MAX_BUF]; 181 char *cp, local_name[MAX_BUF];
183 int count, retval = 0; 182 int count, retval = 0;
275 } 274 }
276 275
277 return 0; 276 return 0;
278} 277}
279 278
279archetype::archetype (const char *name)
280{
281 stub = true;
282 arch = this;
283 this->archname = this->name = this->name_pl = name;
284}
285
286archetype::~archetype ()
287{
288 unlink ();
289}
290
280void 291void
281init_archetypes (void) 292archetype::link ()
282{ 293{
283 load_archetypes (); 294 ht.insert (std::make_pair (archname, this));
284 295
285 empty_archetype = archetype::find ("empty_archetype"); 296 if (!archetypes.contains (this))
297 archetypes.insert (this);
286} 298}
287 299
288archetype::archetype ()
289{
290 clone.arch = this;
291
292 CLEAR_FLAG (&clone, FLAG_FREED); /* This shouldn't matter, since copy_to */
293 SET_FLAG (&clone, FLAG_REMOVED); /* doesn't copy these flags... */
294}
295
296archetype::~archetype ()
297{
298 //TODO: nuke ->more's
299}
300
301static void
302unlink (archetype *at)
303{
304 if (at->head)
305 at = at->head;
306
307 // destroy this archetype's link, making singletons out of its parts
308 while (at)
309 {
310 archetype *more = at->more;
311 at->clone.destroy_inv ();
312 at->head = at->more = 0;
313 at = more;
314 }
315}
316
317// dire hack, need to rationalise
318void 300void
319overwrite (archetype *at, object *op) 301archetype::unlink ()
320{ 302{
321 at->clone = *op; 303 ht.erase (archname);
322 304
323 at->clone.arch = at; 305 if (archetypes.contains (this))
324 //TODO: inv et al. 306 archetypes.erase (this);
307}
308
309/*
310 * Finds, using the hashtable, which archetype matches the given name.
311 * returns a pointer to the found archetype, otherwise NULL.
312 */
313archetype *
314archetype::find (const char *name)
315{
316 if (!name)
317 return 0;
318
319 auto (i, ht.find (name));
320
321 if (i == ht.end ())
322 return 0;
323 else
324 return i->second;
325}
326
327archetype *
328archetype::get (const char *name)
329{
330 if (!name)
331 {
332 LOG (llevError, "null archetype requested\n");
333 name = "(null)";
334 }
335
336 if (loading_arch && !strcmp (&loading_arch->archname, name))
337 return loading_arch;
338
339 archetype *at = find (name);
340
341 if (!at)
342 {
343 at = new archetype (name);
344 at->link ();
345 }
346
347 return at;
325} 348}
326 349
327archetype * 350archetype *
328archetype::read (object_thawer &f) 351archetype::read (object_thawer &f)
329{ 352{
330 assert (f.kw == KW_object); 353 assert (f.kw == KW_object);
331 354
332 archetype *head = get (f.get_str ()); 355 std::vector<archetype *> parts;
333 unlink (head);
334 object *op = object::create ();
335 356
336 if (!op->parse_kv (f)) 357 coroapi::cede_to_tick_every (10);
337 { 358
338 op->destroy (true); 359 for (;;)
339 // leak head
340 return 0;
341 } 360 {
361 // the archetype might have been referenced earlier
362 // so try to find an existing stub archetype first
363 archetype *at = find (f.get_str ());
342 364
343 overwrite (head, op); 365 if (!at || !at->stub)
344 op->destroy (); 366 at = new archetype (f.get_str ());
345 367
346 for (archetype *prev = head; f.kw == KW_more; )
347 {
348 f.next (); 368 f.next ();
349 assert (f.kw == KW_object);
350 369
351 archetype *more = get (f.get_str ()); 370#if 0
352 unlink (more); 371 // implementing it here in the server does neither allow multiple inheritence
353 object *op = object::create (); 372 // nor does it cleanly "just override". it would allow use in map files, though,
354 373 // and other resource files dynamically laoded (as opposed to being preprocessed).
355 if (!op->parse_kv (f)) 374 // not that any of this is relevant as of yet...
375 if (f.kw == KW_inherit)
356 { 376 {
357 op->destroy (true); 377 if (archetype *at = find (f.get_str ()))
358 // leak head more* 378 *op = at->clone;
359 return 0; 379 else
380 LOG (llevError, "archetype '%s' tries to inherit from non-existent archetype '%s'.\n",
381 &at->archname, f.get_str ());
382
383 f.next ();
360 } 384 }
385#endif
361 386
362 overwrite (more, op); 387 loading_arch = at; // hack to tell parse_kv et al. to behave
363 op->destroy (); 388 bool parse_ok = at->parse_kv (f);
389 loading_arch = 0;
364 390
365 if (more->clone.x > head->tail_x) head->tail_x = more->clone.x; 391 if (!parse_ok)
366 if (more->clone.y > head->tail_y) head->tail_y = more->clone.y; 392 goto fail;
367 393
368 more->head = head; 394 loading_arch = at; // hack to tell parse_kv et al. to behave
369 more->clone.head = &head->clone; 395 at->post_load_check ();
370 prev->more = more; 396 loading_arch = 0;
371 prev->clone.more = &more->clone;
372 397
373 prev = more; 398 parts.push_back (at);
374 }
375 399
376 if (!head->next) 400 if (f.kw != KW_more)
377 { 401 break;
378 head->next = first_archetype;
379 first_archetype = head;
380 }
381 402
382 return head; 403 f.next ();
383}
384 404
385/* 405 if (f.kw != KW_object)
386 * Reads/parses the archetype-file, and copies into a linked list
387 * of archetype-structures.
388 */
389static bool
390load_archetypes (object_thawer &f)
391{
392 for (;;)
393 {
394 switch (f.kw)
395 { 406 {
396 case KW_object: 407 f.parse_error ("more object");
397 loading_arch = true; 408 goto fail;
398 if (!archetype::read (f))
399 {
400 loading_arch = false;
401 return false;
402 }
403
404 loading_arch = false;
405 continue;
406
407 case KW_EOF:
408 return true;
409
410 default:
411 if (!f.parse_error ("archetypes file"))
412 return false;
413 } 409 }
410 }
414 411
415 f.next (); 412 {
413 auto (at, parts.begin ());
414
415 archetype *new_head = parts.front ();
416 archetype *old_head = find (new_head->archname);
417
418 if (old_head && !old_head->is_head ())
419 {
420 LOG (llevError, "%s: unable to overwrite non-head archetype '%s' with head archetype, skipping.\n",
421 &new_head->archname, &old_head->archname);
422 goto fail;
416 } 423 }
417}
418 424
425 // check that all archetypes belong to the same old object or are new
426 for (auto (at, parts.begin ()); at != parts.end (); ++at)
427 {
428 archetype *new_part = *at;
429 archetype *old_part = find (new_part->archname);
430
431 if (old_part && old_part->head_ () != old_head)
432 {
433 LOG (llevError, "%s: unable to overwrite archetype '%s' with archetype of different object, skipping.\n",
434 &new_part->archname, &((archetype *)old_part->head_ ())->archname);
435 goto fail;
436 }
437 }
438
439 // deactivate existing archetype
440 for (archetype *at = old_head; at; at = (archetype *)at->more)
441 at->unlink ();
442
443 // assemble new chain
444 new_head->min_x = new_head->max_x = new_head->x;
445 new_head->min_y = new_head->max_y = new_head->y;
446
447 archetype *less = new_head;
448 for (auto (p, parts.begin () + 1); p != parts.end (); ++p)
449 {
450 archetype *at = *p;
451
452 // some flags get inherited formt he head (probably a lot more)
453 // doing it here doesn't feel too cozy, but it allows code
454 // to ignore head checks for these flags, which saves time
455 at->flag [FLAG_ALIVE] = new_head->flag [FLAG_ALIVE];
456 at->flag [FLAG_NO_PICK] = new_head->flag [FLAG_NO_PICK];
457 at->flag [FLAG_MONSTER] = new_head->flag [FLAG_MONSTER];
458 at->flag [FLAG_IS_FLOOR] = new_head->flag [FLAG_IS_FLOOR];
459
460 if (at->x < new_head->min_x) new_head->min_x = at->x;
461 if (at->y < new_head->min_y) new_head->min_y = at->y;
462 if (at->x > new_head->max_x) new_head->max_x = at->x;
463 if (at->y > new_head->max_y) new_head->max_y = at->y;
464
465 at->head = new_head;
466 less->more = at;
467 less = at;
468 }
469
470 // now activate it
471 for (auto (p, parts.begin ()); p != parts.end (); ++p)
472 {
473 archetype *at = *p;
474 at->stub = false;
475 at->link ();
476 }
477
478 return new_head;
479 }
480
481fail:
482 for (auto (p, parts.begin ()); p != parts.end (); ++p)
483 (*p)->destroy (true);
484
485 return 0;
486}
487
419/* 488/*
420 * First initialises the archtype hash-table (init_archetable()). 489 * Initialize global archtype pointers:
421 * Reads and parses the archetype file (with the first and second-pass
422 * functions).
423 */ 490 */
424void 491void
425load_archetypes (void) 492init_archetype_pointers ()
426{ 493{
427 char filename[MAX_BUF]; 494 ring_arch = archetype::find ("ring");
428 495 amulet_arch = archetype::find ("amulet");
429 sprintf (filename, "%s/%s", settings.datadir, settings.archetypes); 496 staff_arch = archetype::find ("staff");
430 LOG (llevDebug, "Reading archetypes from %s:\n", filename); 497 crown_arch = archetype::find ("crown");
431 498 empty_archetype = archetype::find ("empty_archetype");
432 object_thawer f (filename);
433
434 f.next ();
435
436 if (!load_archetypes (f))
437 cleanup ("unable to load archetypes");
438
439 warn_archetypes = 1;
440
441 load_treasures ();
442} 499}
443 500
444/* 501/*
445 * Creates and returns a new object which is a copy of the given archetype. 502 * Creates and returns a new object which is a copy of the given archetype.
446 * This function returns NULL on failure. 503 * This function returns NULL on failure.
448object * 505object *
449arch_to_object (archetype *at) 506arch_to_object (archetype *at)
450{ 507{
451 if (!at) 508 if (!at)
452 { 509 {
453 if (warn_archetypes)
454 LOG (llevError, "Couldn't find archetype.\n"); 510 LOG (llevError, "Couldn't find archetype.\n");
455
456 return NULL; 511 return 0;
457 } 512 }
458 513
459 object *op = at->clone.clone (); 514 object *op = at->clone ();
460 op->arch = at; 515 op->arch = at;
461 op->instantiate (); 516 op->instantiate ();
517
462 return op; 518 return op;
519}
520
521object *
522archetype::instance ()
523{
524 return arch_to_object (this);
463} 525}
464 526
465/* 527/*
466 * Creates an object. This function is called by get_archetype() 528 * Creates an object. This function is called by get_archetype()
467 * if it fails to find the appropriate archetype. 529 * if it fails to find the appropriate archetype.
469 * an object, and never NULL. 531 * an object, and never NULL.
470 */ 532 */
471object * 533object *
472create_singularity (const char *name) 534create_singularity (const char *name)
473{ 535{
474 object *op; 536 LOG (llevError | logBacktrace, "FATAL: creating singularity for '%s'.\n", name);
537
538 if (!strcmp (name, "bug"))
539 abort ();
540
475 char buf[MAX_BUF]; 541 char buf[MAX_BUF];
542 sprintf (buf, "bug, please report (%s)", name);
476 543
477 sprintf (buf, "%s (%s)", ARCH_SINGULARITY, name); 544 object *op = get_archetype ("bug");
478 op = object::create ();
479 op->name = op->name_pl = buf; 545 op->name = op->name_pl = buf;
480 SET_FLAG (op, FLAG_NO_PICK); 546
481 return op; 547 return op;
482} 548}
483 549
484/* 550/*
485 * Finds which archetype matches the given name, and returns a new 551 * Finds which archetype matches the given name, and returns a new
495 561
496 return arch_to_object (at); 562 return arch_to_object (at);
497} 563}
498 564
499/* 565/*
500 * Hash-function used by the arch-hashtable.
501 */
502
503unsigned long
504hasharch (const char *str, int tablesize)
505{
506 unsigned long hash = 0;
507 unsigned int i = 0;
508 const char *p;
509
510 /* use the one-at-a-time hash function, which supposedly is
511 * better than the djb2-like one used by perl5.005, but
512 * certainly is better then the bug used here before.
513 * see http://burtleburtle.net/bob/hash/doobs.html
514 */
515 for (p = str; i < MAXSTRING && *p; p++, i++)
516 {
517 hash += *p;
518 hash += hash << 10;
519 hash ^= hash >> 6;
520 }
521
522 hash += hash << 3;
523 hash ^= hash >> 11;
524 hash += hash << 15;
525
526 return hash % tablesize;
527}
528
529/*
530 * Finds, using the hashtable, which archetype matches the given name.
531 * returns a pointer to the found archetype, otherwise NULL.
532 */
533archetype *
534archetype::find (const char *name)
535{
536 if (!name)
537 return 0;
538
539 AUTODECL (i, ht.find (name));
540
541 if (i == ht.end ())
542 return 0;
543 else
544 return i->second;
545}
546
547archetype *
548archetype::get (const char *name)
549{
550 archetype *at = find (name);
551
552 if (!at)
553 {
554 archetypes.push_back (at = new archetype);
555 at->name = name;
556 at->hash_add ();
557 }
558
559 return at;
560}
561
562/*
563 * Adds an archetype to the hashtable.
564 */
565void
566archetype::hash_add ()
567{
568 ht.insert (std::make_pair (name, this));
569}
570
571void
572archetype::hash_del ()
573{
574 ht.erase (name);
575}
576
577/*
578 * Returns the first archetype using the given type. 566 * Returns the first archetype using the given type.
579 * Used in treasure-generation. 567 * Used in treasure-generation.
580 */ 568 */
581archetype * 569archetype *
582type_to_archetype (int type) 570type_to_archetype (int type)
583{ 571{
584 for (archetype *at = first_archetype; at; at = at->more == 0 ? at->next : at->more) 572 for_all_archetypes (at)
585 if (at->clone.type == type) 573 if (at->type == type && at->head_ () != at)
586 return at; 574 return at;
587 575
588 return 0; 576 return 0;
589} 577}
590 578
602 { 590 {
603 LOG (llevError, "Can't clone archetype %d\n", type); 591 LOG (llevError, "Can't clone archetype %d\n", type);
604 return 0; 592 return 0;
605 } 593 }
606 594
607 object *op = at->clone.clone (); 595 object *op = at->clone ();
608 op->instantiate (); 596 op->instantiate ();
609 return op; 597 return op;
610} 598}
611 599
612/* 600/*
613 * member: make instance from class 601 * member: make instance from class
614 */ 602 */
615
616object * 603object *
617object_create_arch (archetype *at) 604object_create_arch (archetype *at)
618{ 605{
619 object *op, *prev = 0, *head = 0; 606 object *op, *prev = 0, *head = 0;
620 607
621 while (at) 608 while (at)
622 { 609 {
623 op = arch_to_object (at); 610 op = arch_to_object (at);
611
624 op->x = at->clone.x; 612 op->x = at->x;
625 op->y = at->clone.y; 613 op->y = at->y;
626 614
627 if (head) 615 if (head)
628 op->head = head, prev->more = op; 616 op->head = head, prev->more = op;
629 617
630 if (!head) 618 if (!head)
631 head = op; 619 head = op;
632 620
633 prev = op; 621 prev = op;
634 at = at->more; 622 at = (archetype *)at->more;
635 } 623 }
636 624
637 return (head); 625 return head;
638} 626}
639 627

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