| 1 |
/* |
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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@schmorp.de> |
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*/ |
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|
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|
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#include <global.h> |
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#include <unistd.h> |
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|
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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 * |
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get_region_by_name (const char *region_name) |
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{ |
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region *reg; |
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char *p = strchr (region_name, '\n'); |
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|
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if (p) |
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*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)) |
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return reg; |
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|
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for (reg = first_region; reg != NULL; reg = reg->next) |
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{ |
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if (reg->fallback) |
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{ |
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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 * |
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get_region_by_map (maptile *m) |
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{ |
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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 * |
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get_name_of_region_for_map (const maptile *m) |
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{ |
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region *reg; |
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|
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if (m->region) |
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return m->region->name; |
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|
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for (reg = first_region; reg != NULL; reg = reg->next) |
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{ |
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if (reg->fallback) |
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return reg->name; |
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} |
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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 * |
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get_region_from_string (const char *name) |
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{ |
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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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{ |
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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) |
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*p = '\0'; |
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for (reg = first_region; reg != NULL; reg = reg->next) |
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if (!strcasecmp (reg->name, name)) |
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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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if (!strcasecmp (reg->longname, name)) |
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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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{ |
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substr = strstr (reg->longname, name); |
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if (substr != NULL) |
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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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/* |
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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) |
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return reg; |
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} |
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for (reg = first_region; reg != NULL; reg = reg->next) |
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{ |
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substr = strstr (reg->name, name); |
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if (substr != NULL) |
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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 |
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region_is_child_of_region (const region * child, const region * r) |
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{ |
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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 |
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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 * |
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get_region_longname (const region * r) |
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{ |
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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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{ |
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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 * |
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get_region_msg (const region * r) |
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{ |
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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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{ |
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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 * |
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get_jail_exit (object *op) |
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{ |
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region *reg; |
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object *exit; |
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|
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if (op->type != PLAYER) |
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{ |
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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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{ |
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if (reg->jailmap) |
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{ |
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exit = object::create (); |
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EXIT_PATH (exit) = 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 |
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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 |
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init_regions (void) |
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{ |
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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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{ |
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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 * |
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get_region_struct (void) |
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{ |
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return new region; |
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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 |
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parse_regions (FILE * fp) |
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{ |
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region *newreg; |
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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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newreg = NULL; |
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while (fgets (buf, HUGE_BUF - 1, fp) != NULL) |
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{ |
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buf[HUGE_BUF - 1] = 0; |
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key = buf; |
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while (isspace (*key)) |
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key++; |
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if (*key == 0) |
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continue; /* empty line */ |
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value = strchr (key, ' '); |
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if (!value) |
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{ |
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end = strchr (key, '\n'); |
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*end = 0; |
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} |
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else |
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{ |
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*value = 0; |
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value++; |
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while (isspace (*value)) |
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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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{ |
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*end = 0; |
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newreg = get_region_struct (); |
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newreg->name = strdup (value); |
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} |
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else if (!strcmp (key, "parent")) |
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{ |
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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; |
| 362 |
newreg->parent_name = strdup (value); |
| 363 |
} |
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else if (!strcmp (key, "longname")) |
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{ |
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*end = 0; |
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newreg->longname = strdup (value); |
| 368 |
} |
| 369 |
else if (!strcmp (key, "jail")) |
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{ |
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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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|
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if (sscanf (value, "%[^ ] %d %d\n", path, &x, &y) != 3) |
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{ |
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LOG (llevError, "region.c: malformated regions entry: jail %s\n", value); |
| 378 |
continue; |
| 379 |
} |
| 380 |
newreg->jailmap = strdup (path); |
| 381 |
newreg->jailx = x; |
| 382 |
newreg->jaily = y; |
| 383 |
} |
| 384 |
else if (!strcmp (key, "msg")) |
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{ |
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while (fgets (buf, HUGE_BUF - 1, fp) != NULL) |
| 387 |
{ |
| 388 |
if (!strcmp (buf, "endmsg\n")) |
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break; |
| 390 |
else |
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{ |
| 392 |
strcpy (msgbuf + msgpos, buf); |
| 393 |
msgpos += strlen (buf); |
| 394 |
} |
| 395 |
} |
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/* |
| 397 |
* 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... |
| 400 |
*/ |
| 401 |
if (msgpos != 0) |
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newreg->msg = strdup (msgbuf); |
| 403 |
|
| 404 |
/* we have to reset msgpos, or the next region will store both msg blocks. */ |
| 405 |
msgpos = 0; |
| 406 |
} |
| 407 |
else if (!strcmp (key, "fallback")) |
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{ |
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*end = 0; |
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newreg->fallback = atoi (value); |
| 411 |
} |
| 412 |
else if (!strcmp (key, "end")) |
| 413 |
{ |
| 414 |
/* Place this new region last on the list, if the list is empty put it first */ |
| 415 |
for (reg = first_region; reg != NULL && reg->next != NULL; reg = reg->next); |
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|
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if (reg == NULL) |
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first_region = newreg; |
| 419 |
else |
| 420 |
reg->next = newreg; |
| 421 |
newreg = NULL; |
| 422 |
} |
| 423 |
else if (!strcmp (key, "nomore")) |
| 424 |
{ |
| 425 |
/* we have reached the end of the region specs.... */ |
| 426 |
break; |
| 427 |
} |
| 428 |
else |
| 429 |
{ |
| 430 |
/* we should never get here, if we have, then something is wrong */ |
| 431 |
LOG (llevError, "Got unknown value in region file: %s %s\n", key, value); |
| 432 |
} |
| 433 |
} |
| 434 |
if (!key || strcmp (key, "nomore")) |
| 435 |
LOG (llevError, "Got premature eof on regions file!\n"); |
| 436 |
} |
| 437 |
|
| 438 |
void |
| 439 |
assign_region_parents (void) |
| 440 |
{ |
| 441 |
region *reg; |
| 442 |
uint32 parent_count = 0; |
| 443 |
uint32 region_count = 0; |
| 444 |
|
| 445 |
for (reg = first_region; reg != NULL && reg->next != NULL; reg = reg->next) |
| 446 |
{ |
| 447 |
if (reg->parent_name != NULL) |
| 448 |
{ |
| 449 |
reg->parent = get_region_by_name (reg->parent_name); |
| 450 |
parent_count++; |
| 451 |
} |
| 452 |
region_count++; |
| 453 |
} |
| 454 |
LOG (llevDebug, "Assigned %u regions with %u parents.\n", region_count, parent_count); |
| 455 |
} |
