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/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "TotemAI.h"
#include "CellImpl.h"
#include "Creature.h"
#include "GridNotifiers.h"
#include "GridNotifiersImpl.h"
#include "ObjectAccessor.h"
#include "SpellInfo.h"
#include "SpellMgr.h"
#include "Totem.h"
int32 TotemAI::Permissible(Creature const* creature)
{
if (creature->IsTotem())
return PERMIT_BASE_PROACTIVE;
return PERMIT_BASE_NO;
}
TotemAI::TotemAI(Creature* creature, uint32 scriptId) noexcept : NullCreatureAI(creature, scriptId), _victimGUID()
{
ASSERT(creature->IsTotem(), "TotemAI: AI assigned to a non-totem creature (%s)!", creature->GetGUID().ToString().c_str());
}
void TotemAI::UpdateAI(uint32 /*diff*/)
{
if (me->ToTotem()->GetTotemType() != TOTEM_ACTIVE)
return;
if (!me->IsAlive() || me->IsNonMeleeSpellCast(false))
return;
// Search spell
SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(me->ToTotem()->GetSpell(), me->GetMap()->GetDifficultyID());
if (!spellInfo)
return;
// Get spell range
float max_range = spellInfo->GetMaxRange(false);
// SpellModOp::Range not applied in this place just because not existence range mods for attacking totems
// pointer to appropriate target if found any
Unit* victim = !_victimGUID.IsEmpty() ? ObjectAccessor::GetUnit(*me, _victimGUID) : nullptr;
// Search victim if no, not attackable, or out of range, or friendly (possible in case duel end)
CanSeeOrDetectExtraArgs const& canSeeOrDetectExtraArgs = CanSeeOrDetectExtraArgs{
.IgnorePhaseShift = spellInfo->HasAttribute(SPELL_ATTR6_IGNORE_PHASE_SHIFT),
.IncludeHiddenBySpawnTracking = spellInfo->HasAttribute(SPELL_ATTR8_ALLOW_TARGETS_HIDDEN_BY_SPAWN_TRACKING),
.IncludeAnyPrivateObject = spellInfo->HasAttribute(SPELL_ATTR0_CU_CAN_TARGET_ANY_PRIVATE_OBJECT)
};
if (!victim || !victim->isTargetableForAttack() || !me->IsWithinDistInMap(victim, max_range) || me->IsFriendlyTo(victim) || !me->CanSeeOrDetect(victim, canSeeOrDetectExtraArgs))
{
victim = nullptr;
float extraSearchRadius = max_range > 0.0f ? EXTRA_CELL_SEARCH_RADIUS : 0.0f;
Trinity::NearestAttackableUnitInObjectRangeCheck u_check(me, me->GetCharmerOrOwnerOrSelf(), max_range);
Trinity::UnitLastSearcher<Trinity::NearestAttackableUnitInObjectRangeCheck> checker(me, victim, u_check);
Cell::VisitAllObjects(me, checker, max_range + extraSearchRadius);
}
// If have target
if (victim)
{
// remember
_victimGUID = victim->GetGUID();
// attack
me->CastSpell(victim, me->ToTotem()->GetSpell());
}
else
_victimGUID.Clear();
}
void TotemAI::AttackStart(Unit* /*victim*/)
{
}
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