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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) 2002 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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#include <global.h> |
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|
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/* |
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* Add a new friendly object to the linked list of friendly objects. |
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* No checking to see if the object is already in the linked list is done. |
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*/ |
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|
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void |
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add_friendly_object (object *op) |
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{ |
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objectlink *ol; |
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|
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/* Add some error checking. This shouldn't happen, but the friendly |
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* object list usually isn't very long, and remove_friendly_object |
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* won't remove it either. Plus, it is easier to put a breakpoint in |
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* the debugger here and see where the problem is happening. |
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*/ |
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for (ol = first_friendly_object; ol != NULL; ol = ol->next) |
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{ |
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if (ol->ob == op) |
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{ |
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LOG (llevError, "add_friendly_object: Trying to add object already on list (%s)\n", &op->name); |
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return; |
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} |
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} |
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|
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ol = first_friendly_object; |
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first_friendly_object = get_objectlink (); |
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first_friendly_object->ob = op; |
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first_friendly_object->id = op->count; |
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first_friendly_object->next = ol; |
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} |
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|
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/* |
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* Removes the specified object from the linked list of friendly objects. |
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*/ |
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|
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void |
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remove_friendly_object (object *op) |
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{ |
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objectlink *obj; |
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|
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CLEAR_FLAG (op, FLAG_FRIENDLY); |
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|
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if (!first_friendly_object) |
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{ |
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LOG (llevError, "remove_friendly_object called with empty friendly list, remove ob=%s\n", &op->name); |
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return; |
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} |
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/* if the first object happens to be the one, processing is pretty |
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* easy. |
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*/ |
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if (first_friendly_object->ob == op) |
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{ |
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obj = first_friendly_object; |
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first_friendly_object = obj->next; |
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free (obj); |
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} |
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else |
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{ |
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objectlink *prev = first_friendly_object; |
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|
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for (obj = first_friendly_object->next; obj != NULL; obj = obj->next) |
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{ |
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if (obj->ob == op) |
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break; |
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prev = obj; |
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} |
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if (obj) |
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{ |
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/* This should not happen. But if it does, presumably the |
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* call to remove it is still valid. |
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*/ |
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if (obj->id != op->count) |
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{ |
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LOG (llevError, "remove_friendly_object, tags do no match, %s, %d != %d\n", |
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op->name ? (const char *) op->name : "none", op->count, obj->id); |
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} |
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prev->next = obj->next; |
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free (obj); |
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} |
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} |
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} |
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|
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/* |
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* Dumps all friendly objects. Invoked in DM-mode with the G key. |
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*/ |
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|
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void |
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dump_friendly_objects (void) |
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{ |
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objectlink *ol; |
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|
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for (ol = first_friendly_object; ol != NULL; ol = ol->next) |
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LOG (llevError, "%s (%d)\n", &ol->ob->name, ol->ob->count); |
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} |
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|
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/* New function, MSW 2000-1-14 |
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* It traverses the friendly list removing objects that should not be here |
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* (ie, do not have friendly flag set, freed, etc) |
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*/ |
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void |
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clean_friendly_list (void) |
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{ |
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objectlink *obj, *prev = NULL, *next; |
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int count = 0; |
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|
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for (obj = first_friendly_object; obj != NULL; obj = next) |
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{ |
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next = obj->next; |
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if (QUERY_FLAG (obj->ob, FLAG_FREED) || !QUERY_FLAG (obj->ob, FLAG_FRIENDLY) || (obj->id != obj->ob->count)) |
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{ |
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if (prev) |
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{ |
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prev->next = obj->next; |
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} |
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else |
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{ |
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first_friendly_object = obj->next; |
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} |
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count++; |
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free (obj); |
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} |
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/* If we removed the object, then prev is still valid. */ |
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else |
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prev = obj; |
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} |
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if (count) |
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LOG (llevDebug, "clean_friendly_list: Removed %d bogus links\n", count); |
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} |
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|
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/* Checks if the given object is already in the friendly list or not |
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* Lauwenmark - 31/07/05 |
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*/ |
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int |
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is_friendly (const object *op) |
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{ |
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objectlink *ol; |
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|
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for (ol = first_friendly_object; ol != NULL; ol = ol->next) |
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if (ol->ob == op) |
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return 1; |
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|
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return 0; |
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} |
