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/* |
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* This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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* |
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* Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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* Copyright (©) 2002 Mark Wedel & Crossfire Development Team |
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* Copyright (©) 1992 Frank Tore Johansen |
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* |
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* Deliantra is free software: you can redistribute it and/or modify it under |
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* the terms of the Affero GNU General Public License as published by the |
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* Free Software Foundation, either version 3 of the License, or (at your |
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* option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the Affero GNU General Public License |
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* and the GNU General Public License along with this program. If not, see |
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* <http://www.gnu.org/licenses/>. |
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* |
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* The authors can be reached via e-mail to <support@deliantra.net> |
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*/ |
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|
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/* Basic stuff for use with the alchemy code. Clearly some of this stuff |
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* could go into server/alchemy, but I left it here just in case it proves |
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* more generally useful. |
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* |
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* Nov 1995 - file created by b.t. thomas@astro.psu.edu |
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*/ |
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|
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|
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/* Our definition of 'formula' is any product of an alchemical process. |
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* Ingredients are just comma delimited list of archetype (or object) |
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* names. |
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*/ |
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|
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/* Example 'formula' entry in libdir/formulae: |
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* object transparency |
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* chance 10 |
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* ingred dust of beholdereye,gem |
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* arch potion_generic |
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*/ |
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|
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#include <cctype> |
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|
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#include <global.h> |
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#include <object.h> |
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|
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static void build_stringlist (const char *str, char ***result_list, size_t * result_size); |
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|
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static recipelist *formulalist; |
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|
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static recipelist * |
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init_recipelist () |
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{ |
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recipelist *tl = new recipelist; |
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|
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tl->total_chance = 0; |
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tl->number = 0; |
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tl->items = 0; |
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tl->next = 0; |
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|
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return tl; |
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} |
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|
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static recipe * |
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get_empty_formula () |
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{ |
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recipe *t = new recipe; |
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|
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t->chance = 0; |
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t->index = 0; |
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t->transmute = 0; |
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t->yield = 0; |
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t->diff = 0; |
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t->exp = 0; |
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t->keycode = 0; |
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t->title = NULL; |
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t->arch_names = 0; |
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t->arch_name = NULL; |
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t->skill = NULL; |
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t->cauldron = NULL; |
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t->ingred = NULL; |
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t->next = NULL; |
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return t; |
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} |
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|
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/* get_formulalist() - returns pointer to the formula list */ |
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recipelist * |
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get_formulalist (int i) |
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{ |
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recipelist *fl = formulalist; |
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int number = i; |
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|
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while (fl && number > 1) |
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{ |
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if (!(fl = fl->next)) |
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break; |
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number--; |
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} |
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|
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return fl; |
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} |
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|
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/* check_recipe() - makes sure we actually have the requested artifact |
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* and archetype. */ |
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static int |
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check_recipe (const recipe *rp) |
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{ |
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size_t i; |
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int result = 1; |
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|
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for (i = 0; i < rp->arch_names; i++) |
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{ |
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if (archetype::find (rp->arch_name[i])) |
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{ |
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artifact *art = locate_recipe_artifact (rp, i); |
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|
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if (!art && rp->title != shstr_NONE) |
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{ |
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LOG (llevError, "WARNING: Formula %s of %s has no artifact.\n", rp->arch_name[i], &rp->title); |
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result = 0; |
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} |
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} |
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else |
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{ |
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LOG (llevError, "WARNING: Can't find archetype %s for formula %s\n", rp->arch_name[i], &rp->title); |
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result = 0; |
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} |
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} |
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|
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return result; |
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} |
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|
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/* check_formulae()- since we are doing a squential search on the |
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* formulae lists now, we have to be carefull that we dont have 2 |
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* formula with the exact same index value. Under the new nbatches |
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* code, it is possible to have multiples of ingredients in a cauldron |
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* which could result in an index formula mismatch. We *don't* check for |
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* that possibility here. -b.t. |
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*/ |
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static void |
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check_formulae () |
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{ |
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recipelist *fl; |
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recipe *check, *formula; |
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int numb = 1; |
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|
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LOG (llevDebug, "Checking formulae lists...\n"); |
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|
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for (fl = formulalist; fl; fl = fl->next) |
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{ |
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for (formula = fl->items; formula; formula = formula->next) |
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for (check = formula->next; check; check = check->next) |
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if (check->index == formula->index) |
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{ |
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LOG (llevError, " ERROR: On %d ingred list: ", numb); |
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LOG (llevError, "Formulae [%s] of %s and [%s] of %s have matching index id (%d)\n", |
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formula->arch_name[0], &formula->title, check->arch_name[0], &check->title, formula->index); |
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} |
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numb++; |
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} |
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|
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LOG (llevDebug, "done.\n"); |
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|
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} |
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|
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/* |
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* init_formulae() - Builds up the lists of formula from the file in |
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* the libdir. -b.t. |
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*/ |
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void |
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init_formulae () |
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{ |
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static int has_been_done = 0; |
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FILE *fp; |
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char filename[MAX_BUF], buf[MAX_BUF], *cp, *next; |
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recipe *formula = NULL; |
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recipelist *fl = init_recipelist (); |
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linked_char *tmp; |
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int value, comp; |
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|
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if (!formulalist) |
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formulalist = fl; |
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|
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if (has_been_done) |
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return; |
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else |
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has_been_done = 1; |
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|
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sprintf (filename, "%s/formulae", settings.datadir); |
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LOG (llevDebug, "Reading alchemical formulae from %s...\n", filename); |
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if ((fp = open_and_uncompress (filename, 0, &comp)) == NULL) |
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{ |
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LOG (llevError, "Can't open %s.\n", filename); |
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return; |
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} |
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|
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while (fgets (buf, MAX_BUF, fp) != NULL) |
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{ |
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if (*buf == '#') |
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continue; |
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if ((cp = strchr (buf, '\n')) != NULL) |
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*cp = '\0'; |
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cp = buf; |
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while (*cp == ' ') /* Skip blanks */ |
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cp++; |
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|
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if (!strncmp (cp, "object", 6)) |
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{ |
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formula = get_empty_formula (); |
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formula->title = strchr (cp, ' ') + 1; |
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} |
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else if (!strncmp (cp, "keycode", 7)) |
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formula->keycode = strchr (cp, ' ') + 1; |
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else if (sscanf (cp, "trans %d", &value)) |
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formula->transmute = (uint16) value; |
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else if (sscanf (cp, "yield %d", &value)) |
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formula->yield = (uint16) value; |
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else if (sscanf (cp, "chance %d", &value)) |
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formula->chance = (uint16) value; |
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else if (sscanf (cp, "exp %d", &value)) |
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formula->exp = (uint16) value; |
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else if (sscanf (cp, "diff %d", &value)) |
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formula->diff = (uint16) value; |
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else if (!strncmp (cp, "ingred", 6)) |
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{ |
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int numb_ingred = 1; |
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|
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cp = strchr (cp, ' ') + 1; |
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do |
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{ |
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if ((next = strchr (cp, ',')) != NULL) |
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{ |
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*(next++) = '\0'; |
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numb_ingred++; |
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} |
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|
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tmp = new linked_char; |
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|
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tmp->name = cp; |
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tmp->next = formula->ingred; |
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formula->ingred = tmp; |
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/* each ingredient's ASCII value is coadded. Later on this |
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* value will be used allow us to search the formula lists |
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* quickly for the right recipe. |
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*/ |
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formula->index += strtoint (cp); |
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} |
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while ((cp = next) != NULL); |
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|
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/* now find the correct (# of ingred ordered) formulalist */ |
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fl = formulalist; |
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while (numb_ingred != 1) |
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{ |
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if (!fl->next) |
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fl->next = init_recipelist (); |
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|
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fl = fl->next; |
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numb_ingred--; |
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} |
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|
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fl->total_chance += formula->chance; |
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fl->number++; |
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formula->next = fl->items; |
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fl->items = formula; |
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} |
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else if (!strncmp (cp, "arch", 4)) |
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{ |
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build_stringlist (strchr (cp, ' ') + 1, &formula->arch_name, &formula->arch_names); |
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check_recipe (formula); |
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} |
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else if (!strncmp (cp, "skill", 5)) |
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formula->skill = strchr (cp, ' ') + 1; |
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else if (!strncmp (cp, "cauldron", 8)) |
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formula->cauldron = strchr (cp, ' ') + 1; |
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else |
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LOG (llevError, "Unknown input in file %s: %s\n", filename, buf); |
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} |
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|
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LOG (llevDebug, "done.\n"); |
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close_and_delete (fp, comp); |
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/* Lastly, lets check for problems in formula we got */ |
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check_formulae (); |
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} |
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|
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/* Find a treasure with a matching name. The 'depth' parameter is |
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* only there to prevent infinite loops in treasure lists (a list |
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* referencing another list pointing back to the first one). */ |
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static archetype * |
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find_treasure_by_name (const treasure *t, const char *name, int depth) |
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{ |
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if (depth > 10) |
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return 0; |
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|
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while (t) |
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{ |
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if (t->name) |
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{ |
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if (treasurelist *tl = treasurelist::find (t->name)) |
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if (tl->items) |
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if (archetype *at = find_treasure_by_name (tl->items, name, depth + 1)) |
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return at; |
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} |
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else |
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{ |
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if (t->item && !strcasecmp (t->item->object::name, name)) |
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return t->item; |
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} |
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|
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if (t->next_yes) |
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if (archetype *at = find_treasure_by_name (t->next_yes, name, depth)) |
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return at; |
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|
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if (t->next_no) |
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if (archetype *at = find_treasure_by_name (t->next_no, name, depth)) |
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return at; |
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|
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t = t->next; |
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} |
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|
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return 0; |
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} |
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|
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static const char * |
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ingred_name (const char *name) |
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{ |
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const char *cp = name; |
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|
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if (atoi (cp)) |
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cp = strchr (cp, ' ') + 1; |
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|
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return cp; |
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} |
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|
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static int |
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numb_ingred (const char *buf) |
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{ |
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int numb; |
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|
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if ((numb = atoi (buf))) |
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return numb; |
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else |
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return 1; |
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} |
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|
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/* strtoint() - we use this to convert buf into an integer |
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* equal to the coadded sum of the (lowercase) character |
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* ASCII values in buf (times prepended integers). |
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* Some kind of hashing. |
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*/ |
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int |
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strtoint (const char *buf) |
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{ |
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const char *cp = ingred_name (buf); |
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int val = 0, len = strlen (cp), mult = numb_ingred (buf); |
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|
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while (len) |
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{ |
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val += tolower (*cp); |
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cp++; |
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len--; |
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} |
| 365 |
|
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return val * mult; |
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} |
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|
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artifact * |
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locate_recipe_artifact (const recipe *rp, size_t idx) |
| 371 |
{ |
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archetype *at = archetype::find (rp->arch_name [idx]); |
| 373 |
|
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if (at) |
| 375 |
if (artifactlist *al = find_artifactlist (at->type)) |
| 376 |
for (artifact *art = al->items; art; art = art->next) |
| 377 |
if (art->item->name == rp->title) |
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return art; |
| 379 |
|
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return 0; |
| 381 |
} |
| 382 |
|
| 383 |
static recipelist * |
| 384 |
get_random_recipelist () |
| 385 |
{ |
| 386 |
recipelist *fl = NULL; |
| 387 |
int number = 0, roll = 0; |
| 388 |
|
| 389 |
/* first, determine # of recipelist we have */ |
| 390 |
for (fl = get_formulalist (1); fl; fl = fl->next) |
| 391 |
number++; |
| 392 |
|
| 393 |
/* now, randomly choose one */ |
| 394 |
if (number > 0) |
| 395 |
roll = rndm (number); |
| 396 |
|
| 397 |
fl = get_formulalist (1); |
| 398 |
while (roll && fl) |
| 399 |
{ |
| 400 |
if (fl->next) |
| 401 |
fl = fl->next; |
| 402 |
else |
| 403 |
break; |
| 404 |
roll--; |
| 405 |
} |
| 406 |
if (!fl) /* failed! */ |
| 407 |
LOG (llevError, "get_random_recipelist(): no recipelists found!\n"); |
| 408 |
else if (fl->total_chance == 0) |
| 409 |
fl = get_random_recipelist (); |
| 410 |
|
| 411 |
return fl; |
| 412 |
} |
| 413 |
|
| 414 |
recipe * |
| 415 |
get_random_recipe (recipelist * rpl) |
| 416 |
{ |
| 417 |
recipelist *fl = rpl; |
| 418 |
recipe *rp = NULL; |
| 419 |
int r = 0; |
| 420 |
|
| 421 |
/* looks like we have to choose a random one */ |
| 422 |
if (fl == NULL) |
| 423 |
if ((fl = get_random_recipelist ()) == NULL) |
| 424 |
return rp; |
| 425 |
|
| 426 |
if (fl->total_chance > 0) |
| 427 |
{ |
| 428 |
r = rndm (fl->total_chance); |
| 429 |
for (rp = fl->items; rp; rp = rp->next) |
| 430 |
{ |
| 431 |
r -= rp->chance; |
| 432 |
if (r < 0) |
| 433 |
break; |
| 434 |
} |
| 435 |
} |
| 436 |
return rp; |
| 437 |
} |
| 438 |
|
| 439 |
/** |
| 440 |
* Split a comma separated string list into words. |
| 441 |
* |
| 442 |
* @param str the string to split |
| 443 |
* |
| 444 |
* @param result_list pointer to return value for the newly created list; the |
| 445 |
* caller is responsible for freeing both *result_list and **result_list. |
| 446 |
* |
| 447 |
* @param result_size pointer to return value for the size of the newly |
| 448 |
* created list |
| 449 |
*/ |
| 450 |
static void |
| 451 |
build_stringlist (const char *str, char ***result_list, size_t * result_size) |
| 452 |
{ |
| 453 |
char *dup; |
| 454 |
char *p; |
| 455 |
size_t size; |
| 456 |
size_t i; |
| 457 |
|
| 458 |
dup = strdup (str); |
| 459 |
if (dup == NULL) |
| 460 |
fatal (OUT_OF_MEMORY); |
| 461 |
|
| 462 |
size = 0; |
| 463 |
for (p = strtok (dup, ","); p != NULL; p = strtok (NULL, ",")) |
| 464 |
size++; |
| 465 |
|
| 466 |
*result_list = (char **) malloc (size * sizeof (*result_list)); |
| 467 |
|
| 468 |
*result_size = size; |
| 469 |
|
| 470 |
for (i = 0; i < size; i++) |
| 471 |
{ |
| 472 |
(*result_list)[i] = dup; |
| 473 |
dup = dup + strlen (dup) + 1; |
| 474 |
} |
| 475 |
} |
