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TrinityCore/src/game/CreatureAI.cpp
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megamage 40a8e6d3ab *Rename some script functions (no real change). 
--HG--
branch : trunk
2009-05-10 14:29:28 -05:00

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/*
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*
* Copyright (C) 2008-2009 Trinity <http://www.trinitycore.org/>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "CreatureAI.h"
#include "Creature.h"
#include "Player.h"
#include "Pet.h"
#include "SpellAuras.h"
#include "World.h"
void UnitAI::AttackStart(Unit *victim)
{
if(!victim)
return;
if(me->Attack(victim, true))
{
//DEBUG_LOG("Creature %s tagged a victim to kill [guid=%u]", me->GetName(), victim->GetGUIDLow());
me->GetMotionMaster()->MoveChase(victim);
}
}
void UnitAI::DoMeleeAttackIfReady()
{
//Make sure our attack is ready and we aren't currently casting before checking distance
if (me->isAttackReady() && !me->hasUnitState(UNIT_STAT_CASTING))
{
//If we are within range melee the target
if (me->IsWithinMeleeRange(me->getVictim()))
{
me->AttackerStateUpdate(me->getVictim());
me->resetAttackTimer();
}
}
if (me->haveOffhandWeapon() && me->isAttackReady(OFF_ATTACK) && !me->hasUnitState(UNIT_STAT_CASTING))
{
//If we are within range melee the target
if (me->IsWithinMeleeRange(me->getVictim()))
{
me->AttackerStateUpdate(me->getVictim(), OFF_ATTACK);
me->resetAttackTimer(OFF_ATTACK);
}
}
}
//Enable PlayerAI when charmed
void PlayerAI::OnCharmed(bool apply) { me->IsAIEnabled = apply; }
//Disable CreatureAI when charmed
void CreatureAI::OnCharmed(bool apply)
{
//me->IsAIEnabled = !apply;*/
me->NeedChangeAI = true;
me->IsAIEnabled = false;
}
AISpellInfoType *AISpellInfo;
void CreatureAI::DoZoneInCombat(Creature* creature)
{
if (!creature)
creature = me;
Map *map = creature->GetMap();
if (!map->IsDungeon()) //use IsDungeon instead of Instanceable, in case battlegrounds will be instantiated
{
sLog.outError("DoZoneInCombat call for map that isn't an instance (creature entry = %d)", creature->GetTypeId() == TYPEID_UNIT ? ((Creature*)creature)->GetEntry() : 0);
return;
}
if(!creature->getVictim())
{
if(Unit *target = creature->SelectNearestTarget())
creature->AI()->AttackStart(target);
else if(creature->isSummon())
{
if(Unit *summoner = ((TempSummon*)creature)->GetSummoner())
{
if(summoner->getVictim()
&& (creature->IsFriendlyTo(summoner) || creature->IsHostileTo(summoner->getVictim())))
creature->AI()->AttackStart(summoner->getVictim());
}
}
}
if (!creature->CanHaveThreatList() || !creature->getVictim())
{
sLog.outError("DoZoneInCombat called for creature that either cannot have threat list or has empty threat list (creature entry = %d)", creature->GetTypeId() == TYPEID_UNIT ? ((Creature*)creature)->GetEntry() : 0);
return;
}
Map::PlayerList const &PlayerList = map->GetPlayers();
for(Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
{
if (Player* i_pl = i->getSource())
if (i_pl->isAlive())
{
creature->SetInCombatWith(i_pl);
i_pl->SetInCombatWith(creature);
creature->AddThreat(i_pl, 0.0f);
}
}
}
void CreatureAI::MoveInLineOfSight(Unit *who)
{
if(me->getVictim())
return;
if(me->canStartAttack(who))
AttackStart(who);
else if(who->getVictim() && me->IsFriendlyTo(who)
&& me->IsWithinDistInMap(who, sWorld.getConfig(CONFIG_CREATURE_FAMILY_ASSISTANCE_RADIUS))
&& me->canAttack(who->getVictim()))
AttackStart(who->getVictim());
}
bool CreatureAI::UpdateVictim()
{
if(!me->isInCombat())
return false;
if(Unit *victim = me->SelectVictim())
AttackStart(victim);
return me->getVictim();
}
void CreatureAI::EnterEvadeMode()
{
me->RemoveAllAuras();
me->DeleteThreatList();
me->CombatStop();
me->LoadCreaturesAddon();
me->SetLootRecipient(NULL);
if(me->isAlive())
me->GetMotionMaster()->MoveTargetedHome();
}
inline bool SelectTargetHelper(const Unit * me, const Unit * target, const bool &playerOnly, const float &dist, const int32 &aura)
{
if(playerOnly && target->GetTypeId() != TYPEID_PLAYER)
return false;
if(dist && !me->IsWithinCombatRange(target, dist))
return false;
if(aura)
{
if(aura > 0)
{
if(!target->HasAura(aura))
return false;
}
else
{
if(target->HasAura(aura))
return false;
}
}
return true;
}
struct TargetDistanceOrder : public std::binary_function<const Unit *, const Unit *, bool>
{
const Unit * me;
TargetDistanceOrder(const Unit* Target) : me(Target) {};
// functor for operator ">"
bool operator()(const Unit * _Left, const Unit * _Right) const
{
return (me->GetDistanceSq(_Left) < me->GetDistanceSq(_Right));
}
};
Unit* CreatureAI::SelectTarget(SelectAggroTarget targetType, uint32 position, float dist, bool playerOnly, int32 aura)
{
if(targetType == SELECT_TARGET_NEAREST || targetType == SELECT_TARGET_FARTHEST)
{
std::list<HostilReference*> &m_threatlist = me->getThreatManager().getThreatList();
if(position >= m_threatlist.size())
return NULL;
std::list<Unit*> targetList;
for(std::list<HostilReference*>::iterator itr = m_threatlist.begin(); itr!= m_threatlist.end(); ++itr)
if(SelectTargetHelper(me, (*itr)->getTarget(), playerOnly, dist, aura))
targetList.push_back((*itr)->getTarget());
if(position >= targetList.size())
return NULL;
targetList.sort(TargetDistanceOrder(m_creature));
if(targetType == SELECT_TARGET_NEAREST)
{
std::list<Unit*>::iterator i = targetList.begin();
advance(i, position);
return *i;
}
else
{
std::list<Unit*>::reverse_iterator i = targetList.rbegin();
advance(i, position);
return *i;
}
}
else
{
std::list<HostilReference*> m_threatlist = me->getThreatManager().getThreatList();
std::list<HostilReference*>::iterator i;
while(position < m_threatlist.size())
{
if(targetType == SELECT_TARGET_BOTTOMAGGRO)
{
i = m_threatlist.end();
advance(i, - (int32)position - 1);
}
else
{
i = m_threatlist.begin();
if(targetType == SELECT_TARGET_TOPAGGRO)
advance(i, position);
else // random
advance(i, position + rand()%(m_threatlist.size() - position));
}
if(SelectTargetHelper(me, (*i)->getTarget(), playerOnly, dist, aura))
return (*i)->getTarget();
else
m_threatlist.erase(i);
}
}
return NULL;
}
void CreatureAI::SelectTargetList(std::list<Unit*> &targetList, uint32 num, SelectAggroTarget targetType, float dist, bool playerOnly, int32 aura)
{
if(targetType == SELECT_TARGET_NEAREST || targetType == SELECT_TARGET_FARTHEST)
{
std::list<HostilReference*> &m_threatlist = m_creature->getThreatManager().getThreatList();
if(m_threatlist.empty())
return;
for(std::list<HostilReference*>::iterator itr = m_threatlist.begin(); itr!= m_threatlist.end(); ++itr)
if(SelectTargetHelper(me, (*itr)->getTarget(), playerOnly, dist, aura))
targetList.push_back((*itr)->getTarget());
targetList.sort(TargetDistanceOrder(me));
targetList.resize(num);
if(targetType == SELECT_TARGET_FARTHEST)
targetList.reverse();
}
else
{
std::list<HostilReference*> m_threatlist = me->getThreatManager().getThreatList();
std::list<HostilReference*>::iterator i;
while(!m_threatlist.empty() && num)
{
if(targetType == SELECT_TARGET_BOTTOMAGGRO)
{
i = m_threatlist.end();
--i;
}
else
{
i = m_threatlist.begin();
if(targetType == SELECT_TARGET_RANDOM)
advance(i, rand()%m_threatlist.size());
}
if(SelectTargetHelper(me, (*i)->getTarget(), playerOnly, dist, aura))
{
targetList.push_back((*i)->getTarget());
--num;
}
m_threatlist.erase(i);
}
}
}
void SimpleCharmedAI::UpdateAI(const uint32 /*diff*/)
{
Creature *charmer = (Creature*)me->GetCharmer();
//kill self if charm aura has infinite duration
if(charmer->IsInEvadeMode())
{
Unit::AuraEffectList const& auras = me->GetAurasByType(SPELL_AURA_MOD_CHARM);
for(Unit::AuraEffectList::const_iterator iter = auras.begin(); iter != auras.end(); ++iter)
if((*iter)->GetCasterGUID() == charmer->GetGUID() && (*iter)->GetParentAura()->IsPermanent())
{
charmer->Kill(me);
return;
}
}
if(!charmer->isInCombat())
me->GetMotionMaster()->MoveFollow(charmer, PET_FOLLOW_DIST, PET_FOLLOW_ANGLE);
Unit *target = me->getVictim();
if(!target || !charmer->canAttack(target))
AttackStart(charmer->SelectNearestTarget());
}
/*void CreatureAI::AttackedBy( Unit* attacker )
{
if(!m_creature->getVictim())
AttackStart(attacker);
}*/
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