src/game/CreatureAISelector.cpp

   1 /*
   2  * Copyright (C) 2005-2010 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
  42         const CreatureAICreator *ai_factory = NULL;
  43
  44         std::string ainame=creature->GetAIName();
  45
  46         // select by NPC flags _first_ - otherwise EventAI might be choosen for pets/totems
  47         // excplicit check for isControlled() and owner type to allow guardian, mini-pets and pets controlled by NPCs to be scripted by EventAI
  48         Unit *owner=NULL;
  49         if ((creature->isPet() && ((Pet*)creature)->isControlled() &&
  50             ((owner=creature->GetOwner()) && owner->GetTypeId()==TYPEID_PLAYER)) || creature->isCharmed())
  51             ai_factory = ai_registry.GetRegistryItem("PetAI");
  52         else if (creature->isTotem())
  53             ai_factory = ai_registry.GetRegistryItem("TotemAI");
  54
  55         // select by script name
  56         if (!ai_factory && !ainame.empty())
  57             ai_factory = ai_registry.GetRegistryItem( ainame.c_str() );
  58
  59         if (!ai_factory && creature->isGuard() )
  60             ai_factory = ai_registry.GetRegistryItem("GuardAI");
  61
  62         // select by permit check
  63         if (!ai_factory)
  64         {
  65             int best_val = PERMIT_BASE_NO;
  66             typedef CreatureAIRegistry::RegistryMapType RMT;
  67             RMT const &l = ai_registry.GetRegisteredItems();
  68             for( RMT::const_iterator iter = l.begin(); iter != l.end(); ++iter)
  69             {
  70                 const CreatureAICreator *factory = iter->second;
  71                 const SelectableAI *p = dynamic_cast<const SelectableAI *>(factory);
  72                 assert( p != NULL );
  73                 int val = p->Permit(creature);
  74                 if( val > best_val )
  75                 {
  76                     best_val = val;
  77                     ai_factory = p;
  78                 }
  79             }
  80         }
  81
  82         // select NullCreatureAI if not another cases
  83         ainame = (ai_factory == NULL) ? "NullCreatureAI" : ai_factory->key();
  84
  85         DEBUG_LOG("Creature %u used AI is %s.", creature->GetGUIDLow(), ainame.c_str() );
  86         return ( ai_factory == NULL ? new NullCreatureAI(creature) : ai_factory->Create(creature) );
  87     }
  88
  89     MovementGenerator* selectMovementGenerator(Creature *creature)
  90     {
  91         MovementGeneratorRegistry &mv_registry(MovementGeneratorRepository::Instance());
  92         assert( creature->GetCreatureInfo() != NULL );
  93         const MovementGeneratorCreator *mv_factory = mv_registry.GetRegistryItem( creature->GetDefaultMovementType());
  94
  95         /* if( mv_factory == NULL  )
  96         {
  97             int best_val = -1;
  98             std::vector<std::string> l;
  99             mv_registry.GetRegisteredItems(l);
 100             for( std::vector<std::string>::iterator iter = l.begin(); iter != l.end(); ++iter)
 101             {
 102             const MovementGeneratorCreator *factory = mv_registry.GetRegistryItem((*iter).c_str());
 103             const SelectableMovement *p = dynamic_cast<const SelectableMovement *>(factory);
 104             assert( p != NULL );
 105             int val = p->Permit(creature);
 106             if( val > best_val )
 107             {
 108                 best_val = val;
 109                 mv_factory = p;
 110             }
 111             }
 112         }*/
 113
 114         return ( mv_factory == NULL ? NULL : mv_factory->Create(creature) );
 115
 116     }
 117 }