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/* |
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* static char *rcsid_map_c = |
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* "$Id$"; |
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*/ |
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|
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/* |
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CrossFire, A Multiplayer game for X-windows |
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|
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Copyright (C) 2001-2003 Mark Wedel & Crossfire Development Team |
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Copyright (C) 1992 Frank Tore Johansen |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your 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 GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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|
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The authors can be reached via e-mail at crossfire-devel@real-time.com |
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*/ |
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|
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|
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#include <global.h> |
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|
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#ifndef WIN32 /* ---win32 exclude header */ |
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#include <unistd.h> |
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#endif /* win32 */ |
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/* |
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* Pass a char array, returns a pointer to the region of the same name. |
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* if it can't find a region of the same name it returns the first region |
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* with the 'fallback' property set. |
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* if it can't find a matching name /or/ a fallback region it logs an info message |
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* message and returns NULL |
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* used by the map parsing code. |
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*/ |
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region *get_region_by_name(const char *region_name) { |
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region *reg; |
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char *p = strchr(region_name, '\n'); |
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if (p) *p = '\0'; |
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for (reg=first_region;reg!=NULL;reg=reg->next) |
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if (!strcmp(reg->name, region_name)) return reg; |
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|
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for (reg=first_region;reg!=NULL;reg=reg->next) { |
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if (reg->fallback) { |
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LOG(llevDebug,"region called %s requested, but not found, fallback used.\n", region_name); |
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return reg; |
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} |
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} |
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LOG(llevInfo,"Got no region or fallback for region %s.\n", region_name); |
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return NULL; |
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} |
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|
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/* This might need optimising at some point. */ |
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region *get_region_by_map(mapstruct *m) { |
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return get_region_by_name(get_name_of_region_for_map(m)); |
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} |
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|
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/* |
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* Since we won't assume all maps have a region set properly, we need an |
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* explicit check that it is, this is much nicer here than scattered throughout |
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* the map code. |
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*/ |
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|
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const char *get_name_of_region_for_map(const mapstruct *m) { |
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region *reg; |
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if (m->region!=NULL) return m->region->name; |
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for (reg=first_region;reg!=NULL;reg=reg->next) { |
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if (reg->fallback) return reg->name; |
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} |
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LOG(llevInfo,"map %s had no region and I couldn't find a fallback to use.\n", m->name); |
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return "unknown"; |
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} |
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|
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/* |
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* Tries to find a region that 'name' corresponds to. |
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* It looks, in order, for: |
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* an exact match to region name (case insensitive) |
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* an exact match to longname (case insensitive) |
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* a substring that matches to the longname (eg Kingdom) |
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* a substring that matches to the region name (eg nav) |
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* if it can find none of these it returns the first parentless region |
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* (there should be only one of these - the top level one) |
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* If we got a NULL, then just return the top level region |
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* |
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*/ |
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region *get_region_from_string(const char *name) { |
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region *reg; |
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char *substr; |
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char *p; |
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|
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if (name==NULL) { |
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for (reg=first_region;reg->parent!=NULL;reg=reg->parent); |
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return reg; |
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} |
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p = strchr(name, '\n'); |
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if (p) *p = '\0'; |
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for (reg=first_region;reg!=NULL;reg=reg->next) |
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if (!strcasecmp(reg->name, name)) return reg; |
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|
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for (reg=first_region;reg!=NULL;reg=reg->next) |
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if (reg->longname != NULL) { |
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if (!strcasecmp(reg->longname, name)) return reg; |
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} |
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|
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substr=NULL; |
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for (reg=first_region;reg!=NULL;reg=reg->next) |
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if (reg->longname != NULL) { |
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substr=strstr(reg->longname, name); |
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if (substr != NULL) return reg; |
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} |
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for (reg=first_region;reg!=NULL;reg=reg->next) |
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if (reg->longname != NULL) { |
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/* |
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* This is not a bug, we want the region that is most identifiably a discrete |
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* area in the game, eg if we have 'scor', we want to return 'scorn' and not |
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* 'scornarena', regardless of their order on the list so we only look at those |
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* regions with a longname set. |
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*/ |
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substr=strstr(reg->name, name); |
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if (substr != NULL) return reg; |
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} |
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for (reg=first_region;reg!=NULL;reg=reg->next) { |
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substr=strstr(reg->name, name); |
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if (substr != NULL) return reg; |
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} |
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/* if we are still here, we are going to have to give up, and give the top level region */ |
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for (reg=first_region;reg->parent!=NULL;reg=reg->parent); |
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return reg; |
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} |
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|
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/* |
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* returns 1 if the player is in the region reg, or a child region thereof |
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* otherwise returns 0 |
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* if passed a NULL region returns -1 |
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*/ |
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|
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int region_is_child_of_region(const region *child, const region *r) { |
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|
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if (r==NULL) |
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return -1; |
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if (child == NULL) |
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return 0; |
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if (!strcmp(child->name, r->name)) |
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return 1; |
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else if(child->parent!=NULL) |
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return region_is_child_of_region(child->parent,r); |
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else return 0; |
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} |
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|
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/* |
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* the longname of a region is not a required field, any given region |
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* may want to not set it and use the parent's one instead. so, we: |
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* 1. check if a longname is set and if so return it. |
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* 2. check if there is a parent and try and call the function against that |
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* 3. return a obviously wrong string if we can't get a longname, this should |
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* never happen. We also log a debug message. |
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*/ |
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const char *get_region_longname(const region *r) { |
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|
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if (r->longname!=NULL) |
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return r->longname; |
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else if(r->parent!=NULL) |
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return get_region_longname(r->parent); |
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else { |
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LOG(llevDebug,"NOTICE region %s has no parent and no longname.\n", r->name); |
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return "no name can be found for the current region"; |
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} |
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} |
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|
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const char *get_region_msg(const region *r) { |
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if (r->msg!=NULL) |
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return r->msg; |
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else if(r->parent!=NULL) |
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return get_region_msg(r->parent); |
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else { |
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LOG(llevDebug,"NOTICE region %s has no parent and no msg.\n", r->name); |
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return "no description can be found for the current region"; |
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} |
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} |
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|
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/** Returns an object which is an exit through which the player represented by op should be |
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* sent in order to be imprisoned. If there is no suitable place to which an exit can be |
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* constructed, then NULL will be returned. The caller is responsible for freeing the object |
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* created by this function. |
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*/ |
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object *get_jail_exit(object *op) { |
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region *reg; |
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object *exit; |
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if (op->type != PLAYER) { |
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LOG(llevError, "region.c: get_jail_exit called against non-player object.\n"); |
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return NULL; |
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} |
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reg=get_region_by_map(op->map); |
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while (reg!=NULL) { |
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if (reg->jailmap) { |
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exit=get_object(); |
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EXIT_PATH(exit)=add_string(reg->jailmap); |
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/* damned exits reset savebed and remove teleports, so the prisoner can't escape */ |
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SET_FLAG(exit, FLAG_DAMNED); |
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EXIT_X(exit) = reg->jailx; |
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EXIT_Y(exit) = reg->jaily; |
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return exit; |
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} |
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else reg=reg->parent; |
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} |
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LOG(llevDebug,"No suitable jailmap for region %s was found.\n", reg->name); |
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return NULL; |
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} |
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|
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/* |
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* First initialises the archtype hash-table (init_archetable()). |
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* Reads and parses the archetype file (with the first and second-pass |
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* functions). |
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* Then initialises treasures by calling load_treasures(). |
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*/ |
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void init_regions(void) { |
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FILE *fp; |
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char filename[MAX_BUF]; |
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int comp; |
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|
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if(first_region!=NULL) /* Only do this once */ |
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return; |
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|
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sprintf(filename,"%s/%s/%s",settings.datadir,settings.mapdir,settings.regions); |
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LOG(llevDebug,"Reading regions from %s...\n",filename); |
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if((fp=open_and_uncompress(filename,0,&comp))==NULL) { |
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LOG(llevError," Can't open regions file %s in init_regions.\n", filename); |
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return; |
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} |
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parse_regions(fp); |
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assign_region_parents(); |
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LOG(llevDebug," done\n"); |
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|
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close_and_delete(fp, comp); |
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} |
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|
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/* |
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* Allocates and zeros a region struct, this isn't free()'d anywhere, so might |
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* be a memory leak, but it shouldn't matter too much since it isn't called that |
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* often.... |
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*/ |
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|
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region *get_region_struct(void) { |
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|
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region *new; |
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|
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new=(region *)CALLOC(1,sizeof(region)); |
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if(new==NULL) |
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fatal(OUT_OF_MEMORY); |
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|
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memset(new, '\0', sizeof(region)); |
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|
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return new; |
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} |
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|
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/* |
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* Reads/parses the region file, and copies into a linked list |
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* of region structs. |
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*/ |
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void parse_regions(FILE *fp) { |
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region *new; |
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region *reg; |
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|
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char buf[HUGE_BUF], msgbuf[HUGE_BUF], *key=NULL, *value, *end; |
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int msgpos=0; |
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|
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new = NULL; |
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while (fgets(buf, HUGE_BUF-1, fp)!=NULL) { |
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buf[HUGE_BUF-1] = 0; |
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key = buf; |
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while (isspace(*key)) key++; |
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if (*key == 0) continue; /* empty line */ |
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value = strchr(key, ' '); |
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if (!value) { |
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end = strchr(key, '\n'); |
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*end=0; |
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} else { |
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*value = 0; |
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value++; |
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while (isspace(*value)) value++; |
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end = strchr(value, '\n'); |
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} |
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|
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/* |
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* This is a bizzare mutated form of the map and archetype parser |
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* rolled into one. Key is the field name, value is what it should |
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* be set to. |
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* We've already done the work to null terminate key, |
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* and strip off any leading spaces for both of these. |
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* We have not touched the newline at the end of the line - |
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* these might be needed for some values. the end pointer |
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* points to the first of the newlines. |
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* value could be NULL! It would be easy enough to just point |
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* this to "" to prevent cores, but that would let more errors slide |
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* through. |
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*/ |
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if (!strcmp(key,"region")) { |
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*end=0; |
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new=get_region_struct(); |
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new->name = strdup_local(value); |
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} |
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else if (!strcmp(key,"parent")) { |
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/* |
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* Note that this is in the initialisation code, so we don't actually |
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* assign the pointer to the parent yet, because it might not have been |
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* parsed. |
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*/ |
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*end=0; |
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new->parent_name = strdup_local(value); |
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} |
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else if (!strcmp(key,"longname")) { |
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*end=0; |
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new->longname = strdup_local(value); |
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} |
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else if (!strcmp(key,"jail")) { |
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/* jail entries are of the form: /path/to/map x y */ |
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char path[MAX_BUF]; |
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int x,y; |
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if (sscanf(value, "%[^ ] %d %d\n", path, &x, &y) != 3) { |
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LOG(llevError, "region.c: malformated regions entry: jail %s\n", value); |
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continue; |
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} |
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new->jailmap = strdup_local(path); |
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new->jailx = x; |
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new->jaily = y; |
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} |
| 334 |
else if (!strcmp(key,"msg")) { |
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while (fgets(buf, HUGE_BUF-1, fp)!=NULL) { |
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if (!strcmp(buf,"endmsg\n")) break; |
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else { |
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strcpy(msgbuf+msgpos, buf); |
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msgpos += strlen(buf); |
| 340 |
} |
| 341 |
} |
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/* |
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* There may be regions with empty messages (eg, msg/endmsg |
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* with nothing between). When maps are loaded, this is done |
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* so better do it here too... |
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*/ |
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if (msgpos != 0) |
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new->msg = strdup_local(msgbuf); |
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|
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/* we have to reset msgpos, or the next region will store both msg blocks.*/ |
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msgpos=0; |
| 352 |
} |
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else if (!strcmp(key,"fallback")) { |
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*end=0; |
| 355 |
new->fallback = atoi(value); |
| 356 |
} |
| 357 |
else if (!strcmp(key,"end")) { |
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/* Place this new region last on the list, if the list is empty put it first */ |
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for (reg=first_region;reg!=NULL&®->next!=NULL;reg=reg->next); |
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|
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if (reg==NULL) first_region=new; |
| 362 |
else reg->next=new; |
| 363 |
new = NULL; |
| 364 |
} |
| 365 |
else if (!strcmp(key,"nomore")) { |
| 366 |
/* we have reached the end of the region specs....*/ |
| 367 |
break; |
| 368 |
} |
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else { |
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/* we should never get here, if we have, then something is wrong */ |
| 371 |
LOG(llevError, "Got unknown value in region file: %s %s\n", key, value); |
| 372 |
} |
| 373 |
} |
| 374 |
if (!key || strcmp(key,"nomore")) |
| 375 |
LOG(llevError, "Got premature eof on regions file!\n"); |
| 376 |
} |
| 377 |
|
| 378 |
void assign_region_parents(void) { |
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region *reg; |
| 380 |
uint32 parent_count=0; |
| 381 |
uint32 region_count=0; |
| 382 |
for (reg=first_region;reg!=NULL&®->next!=NULL;reg=reg->next) { |
| 383 |
if (reg->parent_name!=NULL) { |
| 384 |
reg->parent=get_region_by_name(reg->parent_name); |
| 385 |
parent_count++; |
| 386 |
} |
| 387 |
region_count++; |
| 388 |
} |
| 389 |
LOG(llevDebug, "Assigned %u regions with %u parents.", region_count, parent_count); |
| 390 |
} |
