src/game/CreatureAISelector.cpp

   1 /*
   2  * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #include "Creature.h"
  20 #include "CreatureAIImpl.h"
  21 #include "CreatureAISelector.h"
  22 #include "NullCreatureAI.h"
  23 #include "Policies/SingletonImp.h"
  24 #include "MovementGenerator.h"
  25 #include "ScriptCalls.h"
  26 #include "Pet.h"
  27
  28 INSTANTIATE_SINGLETON_1(CreatureAIRegistry);
  29 INSTANTIATE_SINGLETON_1(MovementGeneratorRegistry);
  30
  31 namespace FactorySelector
  32 {
  33     CreatureAI* selectAI(Creature *creature)
  34     {
  35         // Allow scripting AI for normal creatures and not controlled pets (guardians and mini-pets)
  36         if((!creature->isPet() || !((Pet*)creature)->isControlled()) && !creature->isCharmed())
  37             if(CreatureAI* scriptedAI = Script->GetAI(creature))
  38                 return scriptedAI;
  39
  40         CreatureAIRegistry &ai_registry(CreatureAIRepository::Instance());
  41         assert( creature->GetCreatureInfo() != NULL );
  42         CreatureInfo const *cinfo=creature->GetCreatureInfo();
  43
  44         const CreatureAICreator *ai_factory = NULL;
  45
  46         std::string ainame=cinfo->AIName;
  47
  48         // select by script name
  49         if( !ainame.empty())
  50             ai_factory = ai_registry.GetRegistryItem( ainame.c_str() );
  51
  52         // select by NPC flags
  53         if(!ai_factory)
  54         {
  55             if( creature->isGuard() )
  56                 ai_factory = ai_registry.GetRegistryItem("GuardAI");
  57             else if(creature->isPet() || creature->isCharmed())
  58                 ai_factory = ai_registry.GetRegistryItem("PetAI");
  59             else if(creature->isTotem())
  60                 ai_factory = ai_registry.GetRegistryItem("TotemAI");
  61         }
  62
  63         // select by permit check
  64         if(!ai_factory)
  65         {
  66             int best_val = -1;
  67             typedef CreatureAIRegistry::RegistryMapType RMT;
  68             RMT const &l = ai_registry.GetRegisteredItems();
  69             for( RMT::const_iterator iter = l.begin(); iter != l.end(); ++iter)
  70             {
  71                 const CreatureAICreator *factory = iter->second;
  72                 const SelectableAI *p = dynamic_cast<const SelectableAI *>(factory);
  73                 assert( p != NULL );
  74                 int val = p->Permit(creature);
  75                 if( val > best_val )
  76                 {
  77                     best_val = val;
  78                     ai_factory = p;
  79                 }
  80             }
  81         }
  82
  83         // select NullCreatureAI if not another cases
  84         ainame = (ai_factory == NULL) ? "NullCreatureAI" : ai_factory->key();
  85
  86         DEBUG_LOG("Creature %u used AI is %s.", creature->GetGUIDLow(), ainame.c_str() );
  87         return ( ai_factory == NULL ? new NullCreatureAI : ai_factory->Create(creature) );
  88     }
  89
  90     MovementGenerator* selectMovementGenerator(Creature *creature)
  91     {
  92         MovementGeneratorRegistry &mv_registry(MovementGeneratorRepository::Instance());
  93         assert( creature->GetCreatureInfo() != NULL );
  94         const MovementGeneratorCreator *mv_factory = mv_registry.GetRegistryItem( creature->GetDefaultMovementType());
  95
  96         /* if( mv_factory == NULL  )
  97         {
  98             int best_val = -1;
  99             std::vector<std::string> l;
 100             mv_registry.GetRegisteredItems(l);
 101             for( std::vector<std::string>::iterator iter = l.begin(); iter != l.end(); ++iter)
 102             {
 103             const MovementGeneratorCreator *factory = mv_registry.GetRegistryItem((*iter).c_str());
 104             const SelectableMovement *p = dynamic_cast<const SelectableMovement *>(factory);
 105             assert( p != NULL );
 106             int val = p->Permit(creature);
 107             if( val > best_val )
 108             {
 109                 best_val = val;
 110                 mv_factory = p;
 111             }
 112             }
 113         }*/
 114
 115         return ( mv_factory == NULL ? NULL : mv_factory->Create(creature) );
 116
 117     }
 118 }