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root |
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/* |
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* static char *rcsid_friend_c = |
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* "$Id: friend.c,v 1.8 2005/12/05 23:34:03 akirschbaum Exp $"; |
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*/ |
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/* |
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CrossFire, A Multiplayer game for X-windows |
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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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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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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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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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The authors can be reached via e-mail at crossfire-devel@real-time.com |
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*/ |
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#include <global.h> |
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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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void add_friendly_object(object *op) { |
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objectlink *ol; |
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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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if (ol->ob == op) { |
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LOG(llevError, "add_friendly_object: Trying to add object already on list (%s)\n", |
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op->name); |
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return; |
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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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* Removes the specified object from the linked list of friendly objects. |
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*/ |
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void remove_friendly_object(object *op) { |
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objectlink *this; |
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CLEAR_FLAG(op,FLAG_FRIENDLY); |
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if (!first_friendly_object) { |
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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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this=first_friendly_object; |
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first_friendly_object=this->next; |
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free(this); |
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} else { |
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objectlink *prev=first_friendly_object; |
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for (this=first_friendly_object->next; this!=NULL; this=this->next) { |
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if (this->ob == op) break; |
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prev=this; |
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} |
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if (this) { |
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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 (this->id != op->count) { |
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LOG(llevError,"remove_friendly_object, tags do no match, %s, %d != %d\n", |
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op->name?op->name:"none", op->count, this->id); |
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} |
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prev->next = this->next; |
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free(this); |
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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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void dump_friendly_objects(void) { |
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objectlink *ol; |
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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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/* 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 clean_friendly_list(void) { |
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objectlink *this, *prev=NULL, *next; |
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int count=0; |
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for (this=first_friendly_object; this!=NULL; this=next) { |
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next=this->next; |
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if (QUERY_FLAG(this->ob, FLAG_FREED) || |
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!QUERY_FLAG(this->ob, FLAG_FRIENDLY) || |
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(this->id != this->ob->count)) { |
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if (prev) { |
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prev->next = this->next; |
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} |
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else { |
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first_friendly_object = this->next; |
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} |
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count++; |
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free(this); |
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} |
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/* If we removed the object, then prev is still valid. */ |
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else prev=this; |
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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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/* 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 is_friendly(object* op) |
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{ |
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objectlink *ol; |
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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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return 0; |
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} |
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