Creature.cpp

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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 "Creature.h"
#include "BattlegroundMgr.h"
#include "CellImpl.h"
#include "CombatPackets.h"
#include "Common.h"
#include "Containers.h"
#include "CreatureAI.h"
#include "CreatureAISelector.h"
#include "CreatureGroups.h"
#include "DatabaseEnv.h"
#include "Formulas.h"
#include "GameEventMgr.h"
#include "GameTime.h"
#include "GossipDef.h"
#include "GridNotifiersImpl.h"
#include "Group.h"
#include "GroupMgr.h"
#include "InstanceScript.h"
#include "Log.h"
#include "LootMgr.h"
#include "MapManager.h"
#include "MotionMaster.h"
#include "MoveSpline.h"
#include "ObjectAccessor.h"
#include "ObjectMgr.h"
#include "Player.h"
#include "PoolMgr.h"
#include "QueryPackets.h"
#include "QuestDef.h"
#include "ScriptedGossip.h"
#include "SpellAuraEffects.h"
#include "SpellMgr.h"
#include "TemporarySummon.h"
#include "Transport.h"
#include "Util.h"
#include "Vehicle.h"
#include "World.h"
#include "WorldPacket.h"
#include <G3D/g3dmath.h>
 
CreatureMovementData::CreatureMovementData() : Ground(CreatureGroundMovementType::Run), Flight(CreatureFlightMovementType::None), Swim(true), Rooted(false), Chase(CreatureChaseMovementType::Run),
Random(CreatureRandomMovementType::Walk), InteractionPauseTimer(sWorld->getIntConfig(CONFIG_CREATURE_STOP_FOR_PLAYER)) { }
 
std::string CreatureMovementData::ToString() const
{
    char const* const GroundStates[] = { "None", "Run", "Hover" };
    char const* const FlightStates[] = { "None", "DisableGravity", "CanFly" };
    char const* const ChaseStates[]  = { "Run", "CanWalk", "AlwaysWalk" };
    char const* const RandomStates[] = { "Walk", "CanRun", "AlwaysRun" };
 
    std::ostringstream str;
    str << std::boolalpha
        << "Ground: " << GroundStates[AsUnderlyingType(Ground)]
        << ", Swim: " << Swim
        << ", Flight: " << FlightStates[AsUnderlyingType(Flight)]
        << ", Chase: " << ChaseStates[AsUnderlyingType(Chase)]
        << ", Random: " << RandomStates[AsUnderlyingType(Random)];
    if (Rooted)
        str << ", Rooted";
    str << ", InteractionPauseTimer: " << InteractionPauseTimer;
 
    return str.str();
}
 
VendorItemCount::VendorItemCount(uint32 _item, uint32 _count)
    : itemId(_item), count(_count), lastIncrementTime(GameTime::GetGameTime()) { }
 
bool VendorItem::IsGoldRequired(ItemTemplate const* pProto) const
{
    return pProto->HasFlag(ITEM_FLAG2_DONT_IGNORE_BUY_PRICE) || !ExtendedCost;
}
 
bool VendorItemData::RemoveItem(uint32 item_id)
{
    auto newEnd = std::remove_if(m_items.begin(), m_items.end(), [=](VendorItem const& vendorItem)
    {
        return vendorItem.item == item_id;
    });
 
    bool found = (newEnd != m_items.end());
    m_items.erase(newEnd, m_items.end());
    return found;
}
 
VendorItem const* VendorItemData::FindItemCostPair(uint32 item_id, uint32 extendedCost) const
{
    for (VendorItem const& vendorItem : m_items)
        if (vendorItem.item == item_id && vendorItem.ExtendedCost == extendedCost)
            return &vendorItem;
    return nullptr;
}
 
uint32 CreatureTemplate::GetRandomValidModelId() const
{
    uint8 c = 0;
    uint32 modelIDs[4];
 
    if (Modelid1) modelIDs[c++] = Modelid1;
    if (Modelid2) modelIDs[c++] = Modelid2;
    if (Modelid3) modelIDs[c++] = Modelid3;
    if (Modelid4) modelIDs[c++] = Modelid4;
 
    return ((c>0) ? modelIDs[urand(0, c-1)] : 0);
}
 
uint32 CreatureTemplate::GetFirstValidModelId() const
{
    if (Modelid1) return Modelid1;
    if (Modelid2) return Modelid2;
    if (Modelid3) return Modelid3;
    if (Modelid4) return Modelid4;
    return 0;
}
 
uint32 CreatureTemplate::GetFirstInvisibleModel() const
{
    CreatureModelInfo const* modelInfo = sObjectMgr->GetCreatureModelInfo(Modelid1);
    if (modelInfo && modelInfo->is_trigger)
        return Modelid1;
 
    modelInfo = sObjectMgr->GetCreatureModelInfo(Modelid2);
    if (modelInfo && modelInfo->is_trigger)
        return Modelid2;
 
    modelInfo = sObjectMgr->GetCreatureModelInfo(Modelid3);
    if (modelInfo && modelInfo->is_trigger)
        return Modelid3;
 
    modelInfo = sObjectMgr->GetCreatureModelInfo(Modelid4);
    if (modelInfo && modelInfo->is_trigger)
        return Modelid4;
 
    return 11686;
}
 
uint32 CreatureTemplate::GetFirstVisibleModel() const
{
    CreatureModelInfo const* modelInfo = sObjectMgr->GetCreatureModelInfo(Modelid1);
    if (modelInfo && !modelInfo->is_trigger)
        return Modelid1;
 
    modelInfo = sObjectMgr->GetCreatureModelInfo(Modelid2);
    if (modelInfo && !modelInfo->is_trigger)
        return Modelid2;
 
    modelInfo = sObjectMgr->GetCreatureModelInfo(Modelid3);
    if (modelInfo && !modelInfo->is_trigger)
        return Modelid3;
 
    modelInfo = sObjectMgr->GetCreatureModelInfo(Modelid4);
    if (modelInfo && !modelInfo->is_trigger)
        return Modelid4;
 
    return 17519;
}
 
void CreatureTemplate::InitializeQueryData()
{
    for (uint8 loc = LOCALE_enUS; loc < TOTAL_LOCALES; ++loc)
        QueryData[loc] = BuildQueryData(static_cast<LocaleConstant>(loc));
}
 
WorldPacket CreatureTemplate::BuildQueryData(LocaleConstant loc) const
{
    WorldPackets::Query::QueryCreatureResponse queryTemp;
 
    std::string locName = Name, locTitle = Title;
    if (CreatureLocale const* cl = sObjectMgr->GetCreatureLocale(Entry))
    {
        ObjectMgr::GetLocaleString(cl->Name, loc, locName);
        ObjectMgr::GetLocaleString(cl->Title, loc, locTitle);
    }
 
    queryTemp.CreatureID = Entry;
    queryTemp.Allow = true;
 
    queryTemp.Stats.Name = locName;
    queryTemp.Stats.Title = locTitle;
    queryTemp.Stats.CursorName = IconName;
    queryTemp.Stats.Flags = type_flags;
    queryTemp.Stats.CreatureType = type;
    queryTemp.Stats.CreatureFamily = family;
    queryTemp.Stats.Classification = rank;
    memcpy(queryTemp.Stats.ProxyCreatureID, KillCredit, sizeof(uint32) * MAX_KILL_CREDIT);
    queryTemp.Stats.CreatureDisplayID[0] = Modelid1;
    queryTemp.Stats.CreatureDisplayID[1] = Modelid2;
    queryTemp.Stats.CreatureDisplayID[2] = Modelid3;
    queryTemp.Stats.CreatureDisplayID[3] = Modelid4;
    queryTemp.Stats.HpMulti = ModHealth;
    queryTemp.Stats.EnergyMulti = ModMana;
    queryTemp.Stats.Leader = RacialLeader;
 
    for (uint32 i = 0; i < MAX_CREATURE_QUEST_ITEMS; ++i)
        queryTemp.Stats.QuestItems[i] = 0;
 
    if (std::vector<uint32> const* items = sObjectMgr->GetCreatureQuestItemList(Entry))
        for (uint32 i = 0; i < MAX_CREATURE_QUEST_ITEMS; ++i)
            if (i < items->size())
                queryTemp.Stats.QuestItems[i] = (*items)[i];
 
    queryTemp.Stats.CreatureMovementInfoID = movementId;
    queryTemp.Write();
    queryTemp.ShrinkToFit();
    return queryTemp.Move();
}
 
bool AssistDelayEvent::Execute(uint64 /*e_time*/, uint32 /*p_time*/)
{
    if (Unit* victim = ObjectAccessor::GetUnit(m_owner, m_victim))
    {
        while (!m_assistants.empty())
        {
            Creature* assistant = ObjectAccessor::GetCreature(m_owner, *m_assistants.begin());
            m_assistants.pop_front();
 
            if (assistant && assistant->CanAssistTo(&m_owner, victim))
            {
                assistant->SetNoCallAssistance(true);
                assistant->EngageWithTarget(victim);
            }
        }
    }
    return true;
}
 
CreatureBaseStats const* CreatureBaseStats::GetBaseStats(uint8 level, uint8 unitClass)
{
    return sObjectMgr->GetCreatureBaseStats(level, unitClass);
}
 
bool ForcedDespawnDelayEvent::Execute(uint64 /*e_time*/, uint32 /*p_time*/)
{
    m_owner.DespawnOrUnsummon(0s, m_respawnTimer);    // since we are here, we are not TempSummon as object type cannot change during runtime
    return true;
}
 
Creature::Creature(bool isWorldObject): Unit(isWorldObject), MapObject(), m_groupLootTimer(0), m_PlayerDamageReq(0), _pickpocketLootRestore(0),
    m_corpseRemoveTime(0), m_respawnTime(0), m_respawnDelay(300), m_corpseDelay(60), m_ignoreCorpseDecayRatio(false), m_wanderDistance(0.0f),
    m_boundaryCheckTime(2500), m_combatPulseTime(0), m_combatPulseDelay(0), m_reactState(REACT_AGGRESSIVE),
    m_defaultMovementType(IDLE_MOTION_TYPE), m_spawnId(0), m_equipmentId(0), m_originalEquipmentId(0),
    m_AlreadyCallAssistance(false), m_AlreadySearchedAssistance(false), m_cannotReachTarget(false), m_cannotReachTimer(0),
    m_meleeDamageSchoolMask(SPELL_SCHOOL_MASK_NORMAL), m_baseAttackPower(0), m_baseRangedAttackPower(0), m_originalEntry(0),
    m_homePosition(), m_transportHomePosition(), m_creatureInfo(nullptr), m_creatureData(nullptr), m_stringIds(),
    _waypointPathId(0), _currentWaypointNodeInfo(0, 0), m_formation(nullptr), m_triggerJustAppeared(true), m_respawnCompatibilityMode(false),
    _lastDamagedTime(0), _regenerateHealth(true), _regenerateHealthLock(false), _isMissingCanSwimFlagOutOfCombat(false)
{
    m_regenTimer = CREATURE_REGEN_INTERVAL;
    m_valuesCount = UNIT_END;
 
    for (uint8 i = 0; i < MAX_CREATURE_SPELLS; ++i)
        m_spells[i] = 0;
 
    DisableReputationGain = false;
 
    m_SightDistance = sWorld->getFloatConfig(CONFIG_SIGHT_MONSTER);
    m_CombatDistance = 0;//MELEE_RANGE;
 
    ResetLootMode(); // restore default loot mode
    m_isTempWorldObject = false;
}
 
void Creature::AddToWorld()
{
    if (!IsInWorld())
    {
        GetMap()->GetObjectsStore().Insert<Creature>(GetGUID(), this);
        if (m_spawnId)
            GetMap()->GetCreatureBySpawnIdStore().insert(std::make_pair(m_spawnId, this));
 
        TC_LOG_DEBUG("entities.unit", "Adding creature {} with DBGUID {} to world in map {}", GetGUID().ToString(), m_spawnId, GetMap()->GetId());
 
        Unit::AddToWorld();
        SearchFormation();
        AIM_Initialize();
        if (IsVehicle())
            GetVehicleKit()->Install();
 
        if (GetZoneScript())
            GetZoneScript()->OnCreatureCreate(this);
    }
}
 
void Creature::RemoveFromWorld()
{
    if (IsInWorld())
    {
        if (GetZoneScript())
            GetZoneScript()->OnCreatureRemove(this);
 
        if (m_formation)
            sFormationMgr->RemoveCreatureFromGroup(m_formation, this);
 
        Unit::RemoveFromWorld();
 
        if (m_spawnId)
            Trinity::Containers::MultimapErasePair(GetMap()->GetCreatureBySpawnIdStore(), m_spawnId, this);
 
        TC_LOG_DEBUG("entities.unit", "Removing creature {} with DBGUID {} to world in map {}", GetGUID().ToString(), m_spawnId, GetMap()->GetId());
        GetMap()->GetObjectsStore().Remove<Creature>(GetGUID());
    }
}
 
bool Creature::IsReturningHome() const
{
    if (GetMotionMaster()->GetCurrentMovementGeneratorType() == HOME_MOTION_TYPE)
        return true;
 
    return false;
}
 
void Creature::SearchFormation()
{
    if (IsSummon())
        return;
 
    ObjectGuid::LowType lowguid = GetSpawnId();
    if (!lowguid)
        return;
 
    if (FormationInfo const* formationInfo = sFormationMgr->GetFormationInfo(lowguid))
        sFormationMgr->AddCreatureToGroup(formationInfo->LeaderSpawnId, this);
}
 
bool Creature::IsFormationLeader() const
{
    if (!m_formation)
        return false;
 
    return m_formation->IsLeader(this);
}
 
void Creature::SignalFormationMovement()
{
    if (!m_formation)
        return;
 
    if (!m_formation->IsLeader(this))
        return;
 
    m_formation->LeaderStartedMoving();
}
 
bool Creature::IsFormationLeaderMoveAllowed() const
{
    if (!m_formation)
        return false;
 
    return m_formation->CanLeaderStartMoving();
}
 
void Creature::RemoveCorpse(bool setSpawnTime, bool destroyForNearbyPlayers)
{
    if (getDeathState() != CORPSE)
        return;
 
    if (m_respawnCompatibilityMode)
    {
        m_corpseRemoveTime = GameTime::GetGameTime();
        setDeathState(DEAD);
        RemoveAllAuras();
        loot.clear();
        uint32 respawnDelay = m_respawnDelay;
        if (CreatureAI* ai = AI())
            ai->CorpseRemoved(respawnDelay);
 
        if (destroyForNearbyPlayers)
            DestroyForNearbyPlayers();
 
        // Should get removed later, just keep "compatibility" with scripts
        if (setSpawnTime)
            m_respawnTime = std::max<time_t>(GameTime::GetGameTime() + respawnDelay, m_respawnTime);
 
        // if corpse was removed during falling, the falling will continue and override relocation to respawn position
        if (IsFalling())
            StopMoving();
 
        float x, y, z, o;
        GetRespawnPosition(x, y, z, &o);
 
        // We were spawned on transport, calculate real position
        if (IsSpawnedOnTransport())
        {
            Position& pos = m_movementInfo.transport.pos;
            pos.m_positionX = x;
            pos.m_positionY = y;
            pos.m_positionZ = z;
            pos.SetOrientation(o);
 
            if (TransportBase* transport = GetDirectTransport())
                transport->CalculatePassengerPosition(x, y, z, &o);
        }
 
        UpdateAllowedPositionZ(x, y, z);
        SetHomePosition(x, y, z, o);
        GetMap()->CreatureRelocation(this, x, y, z, o);
    }
    else
    {
        if (CreatureAI* ai = AI())
            ai->CorpseRemoved(m_respawnDelay);
 
        // In case this is called directly and normal respawn timer not set
        // Since this timer will be longer than the already present time it
        // will be ignored if the correct place added a respawn timer
        if (setSpawnTime)
        {
            uint32 respawnDelay = m_respawnDelay;
            m_respawnTime = std::max<time_t>(GameTime::GetGameTime() + respawnDelay, m_respawnTime);
 
            SaveRespawnTime();
        }
 
        if (TempSummon* summon = ToTempSummon())
            summon->UnSummon();
        else
            AddObjectToRemoveList();
    }
}
 
bool Creature::InitEntry(uint32 entry, CreatureData const* data /*= nullptr*/)
{
    CreatureTemplate const* normalInfo = sObjectMgr->GetCreatureTemplate(entry);
    if (!normalInfo)
    {
        TC_LOG_ERROR("sql.sql", "Creature::InitEntry creature entry {} does not exist.", entry);
        return false;
    }
 
    // get difficulty 1 mode entry, skip for pets
    CreatureTemplate const* cinfo = normalInfo;
    for (uint8 diff = uint8(GetMap()->GetSpawnMode()); diff > 0 && !IsPet();)
    {
        // we already have valid Map pointer for current creature!
        if (normalInfo->DifficultyEntry[diff - 1])
        {
            cinfo = sObjectMgr->GetCreatureTemplate(normalInfo->DifficultyEntry[diff - 1]);
            if (cinfo)
                break;                                      // template found
 
            // check and reported at startup, so just ignore (restore normalInfo)
            cinfo = normalInfo;
        }
 
        // for instances heroic to normal, other cases attempt to retrieve previous difficulty
        if (diff >= RAID_DIFFICULTY_10MAN_HEROIC && GetMap()->IsRaid())
            diff -= 2;                                      // to normal raid difficulty cases
        else
            --diff;
    }
 
    // Initialize loot duplicate count depending on raid difficulty
    if (GetMap()->Is25ManRaid())
        loot.maxDuplicates = 3;
 
    SetEntry(entry);                                        // normal entry always
    m_creatureInfo = cinfo;                                 // map mode related always
 
    // equal to player Race field, but creature does not have race
    SetRace(RACE_NONE);
 
    // known valid are: CLASS_WARRIOR, CLASS_PALADIN, CLASS_ROGUE, CLASS_MAGE
    SetClass(uint8(cinfo->unit_class));
 
    // Cancel load if no model defined
    if (!(cinfo->GetFirstValidModelId()))
    {
        TC_LOG_ERROR("sql.sql", "Creature (Entry: {}) has no model defined in table `creature_template`, can't load. ", entry);
        return false;
    }
 
    uint32 displayID = ObjectMgr::ChooseDisplayId(GetCreatureTemplate(), data);
    CreatureModelInfo const* minfo = sObjectMgr->GetCreatureModelRandomGender(&displayID);
    if (!minfo)                                             // Cancel load if no model defined
    {
        TC_LOG_ERROR("sql.sql", "Creature (Entry: {}) has invalid model {} defined in table `creature_template`, can't load.", entry, displayID);
        return false;
    }
 
    SetDisplayId(displayID);
    SetNativeDisplayId(displayID);
 
    // Load creature equipment
    if (!data)
        LoadEquipment();  // use default equipment (if available) for summons
    else if (data->equipmentId == 0)
        LoadEquipment(0); // 0 means no equipment for creature table
    else
    {
        m_originalEquipmentId = data->equipmentId;
        LoadEquipment(data->equipmentId);
    }
 
    SetName(normalInfo->Name);                              // at normal entry always
 
    SetModCastingSpeed(1.0f);
 
    SetSpeedRate(MOVE_WALK,   cinfo->speed_walk);
    SetSpeedRate(MOVE_RUN,    cinfo->speed_run);
    SetSpeedRate(MOVE_SWIM,   1.0f); // using 1.0 rate
    SetSpeedRate(MOVE_FLIGHT, 1.0f); // using 1.0 rate
 
    // Will set UNIT_FIELD_BOUNDINGRADIUS and UNIT_FIELD_COMBATREACH
    SetObjectScale(GetNativeObjectScale());
 
    SetHoverHeight(cinfo->HoverHeight);
 
    SetCanDualWield(cinfo->flags_extra & CREATURE_FLAG_EXTRA_USE_OFFHAND_ATTACK);
 
    // checked at loading
    m_defaultMovementType = MovementGeneratorType(data ? data->movementType : cinfo->MovementType);
    if (!m_wanderDistance && m_defaultMovementType == RANDOM_MOTION_TYPE)
        m_defaultMovementType = IDLE_MOTION_TYPE;
 
    for (uint8 i = 0; i < MAX_CREATURE_SPELLS; ++i)
        m_spells[i] = GetCreatureTemplate()->spells[i];
 
    return true;
}
 
bool Creature::UpdateEntry(uint32 entry, CreatureData const* data /*= nullptr*/, bool updateLevel /* = true */)
{
    if (!InitEntry(entry, data))
        return false;
 
    CreatureTemplate const* cInfo = GetCreatureTemplate();
 
    _regenerateHealth = cInfo->RegenHealth;
 
    // creatures always have melee weapon ready if any unless specified otherwise
    if (!GetCreatureAddon())
        SetSheath(SHEATH_STATE_MELEE);
 
    SetFaction(cInfo->faction);
 
    uint32 npcFlags, unitFlags, dynamicFlags;
    ObjectMgr::ChooseCreatureFlags(cInfo, &npcFlags, &unitFlags, &dynamicFlags, data);
 
    if (cInfo->flags_extra & CREATURE_FLAG_EXTRA_WORLDEVENT)
        npcFlags |= sGameEventMgr->GetNPCFlag(this);
 
    ReplaceAllNpcFlags(NPCFlags(npcFlags));
 
    // if unit is in combat, keep this flag
    unitFlags &= ~UNIT_FLAG_IN_COMBAT;
    if (IsInCombat())
        unitFlags |= UNIT_FLAG_IN_COMBAT;
 
    ReplaceAllUnitFlags(UnitFlags(unitFlags));
    ReplaceAllUnitFlags2(UnitFlags2(cInfo->unit_flags2));
 
    ReplaceAllDynamicFlags(dynamicFlags);
 
    SetCanDualWield(cInfo->flags_extra & CREATURE_FLAG_EXTRA_USE_OFFHAND_ATTACK);
 
    SetAttackTime(BASE_ATTACK,   cInfo->BaseAttackTime);
    SetAttackTime(OFF_ATTACK,    cInfo->BaseAttackTime);
    SetAttackTime(RANGED_ATTACK, cInfo->RangeAttackTime);
 
    if (updateLevel)
        SelectLevel();
 
    // Do not update guardian stats here - they are handled in Guardian::InitStatsForLevel()
    if (!IsGuardian())
    {
        uint32 previousHealth = GetHealth();
        UpdateLevelDependantStats();
        if (previousHealth > 0)
            SetHealth(previousHealth);
 
        SetMeleeDamageSchool(SpellSchools(cInfo->dmgschool));
        SetStatFlatModifier(UNIT_MOD_RESISTANCE_HOLY,   BASE_VALUE, float(cInfo->resistance[SPELL_SCHOOL_HOLY]));
        SetStatFlatModifier(UNIT_MOD_RESISTANCE_FIRE,   BASE_VALUE, float(cInfo->resistance[SPELL_SCHOOL_FIRE]));
        SetStatFlatModifier(UNIT_MOD_RESISTANCE_NATURE, BASE_VALUE, float(cInfo->resistance[SPELL_SCHOOL_NATURE]));
        SetStatFlatModifier(UNIT_MOD_RESISTANCE_FROST,  BASE_VALUE, float(cInfo->resistance[SPELL_SCHOOL_FROST]));
        SetStatFlatModifier(UNIT_MOD_RESISTANCE_SHADOW, BASE_VALUE, float(cInfo->resistance[SPELL_SCHOOL_SHADOW]));
        SetStatFlatModifier(UNIT_MOD_RESISTANCE_ARCANE, BASE_VALUE, float(cInfo->resistance[SPELL_SCHOOL_ARCANE]));
 
        SetCanModifyStats(true);
        UpdateAllStats();
    }
 
    // checked and error show at loading templates
    if (FactionTemplateEntry const* factionTemplate = sFactionTemplateStore.LookupEntry(cInfo->faction))
        SetPvP((factionTemplate->Flags & FACTION_TEMPLATE_FLAG_PVP) != 0);
 
    // updates spell bars for vehicles and set player's faction - should be called here, to overwrite faction that is set from the new template
    if (IsVehicle())
    {
        if (Player* owner = Creature::GetCharmerOrOwnerPlayerOrPlayerItself()) // this check comes in case we don't have a player
        {
            SetFaction(owner->GetFaction()); // vehicles should have same as owner faction
            owner->VehicleSpellInitialize();
        }
    }
 
    // trigger creature is always uninteractible and can not be attacked
    if (IsTrigger())
        SetUnitFlag(UNIT_FLAG_UNINTERACTIBLE);
 
    InitializeReactState();
 
    if (cInfo->flags_extra & CREATURE_FLAG_EXTRA_NO_TAUNT)
    {
        ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_MOD_TAUNT, true);
        ApplySpellImmune(0, IMMUNITY_EFFECT, SPELL_EFFECT_ATTACK_ME, true);
    }
 
    SetIsCombatDisallowed((cInfo->flags_extra & CREATURE_FLAG_EXTRA_CANNOT_ENTER_COMBAT) != 0);
 
    LoadTemplateRoot();
    LoadCreaturesAddon();
    InitializeMovementFlags();
    LoadTemplateImmunities();
 
    GetThreatManager().EvaluateSuppressed();
 
    //We must update last scriptId or it looks like we reloaded a script, breaking some things such as gossip temporarily
    LastUsedScriptID = GetScriptId();
 
    m_stringIds[AsUnderlyingType(StringIdType::Template)] = &cInfo->StringId;
 
    if (IsSpiritGuide() && sWorld->IsFFAPvPRealm())
    {
        // client will only send spirit guide query for units that can assist them
        // for ffa pvp flagged players its only other ffa pvp flagged units
        SetPvpFlag(UNIT_BYTE2_FLAG_FFA_PVP);
    }
 
    return true;
}
 
void Creature::SetPhaseMask(uint32 newPhaseMask, bool update)
{
    if (newPhaseMask == GetPhaseMask())
        return;
 
    Unit::SetPhaseMask(newPhaseMask, false);
 
    if (Vehicle* vehicle = GetVehicleKit())
    {
        for (auto seat = vehicle->Seats.begin(); seat != vehicle->Seats.end(); seat++)
            if (Unit* passenger = ObjectAccessor::GetUnit(*this, seat->second.Passenger.Guid))
                passenger->SetPhaseMask(newPhaseMask, update);
    }
 
    if (update)
        UpdateObjectVisibility();
}
 
void Creature::Update(uint32 diff)
{
    if (IsAIEnabled() && m_triggerJustAppeared && m_deathState != DEAD)
    {
        if (m_respawnCompatibilityMode && m_vehicleKit)
            m_vehicleKit->Reset();
        m_triggerJustAppeared = false;
        AI()->JustAppeared();
    }
 
    UpdateMovementFlags();
 
    switch (m_deathState)
    {
        case JUST_RESPAWNED:
            // Must not be called, see Creature::setDeathState JUST_RESPAWNED -> ALIVE promoting.
            TC_LOG_ERROR("entities.unit", "Creature {} in wrong state: JUST_RESPAWNED (4)", GetGUID().ToString());
            break;
        case JUST_DIED:
            // Must not be called, see Creature::setDeathState JUST_DIED -> CORPSE promoting.
            TC_LOG_ERROR("entities.unit", "Creature {} in wrong state: JUST_DIED (1)", GetGUID().ToString());
            break;
        case DEAD:
        {
            if (!m_respawnCompatibilityMode)
            {
                TC_LOG_ERROR("entities.unit", "Creature {} in wrong state: DEAD (3)", GetGUID().ToString());
                break;
            }
            time_t now = GameTime::GetGameTime();
            if (m_respawnTime <= now)
            {
                // Delay respawn if spawn group is not active
                if (m_creatureData && !GetMap()->IsSpawnGroupActive(m_creatureData->spawnGroupData->groupId))
                {
                    m_respawnTime = now + urand(4,7);
                    break; // Will be rechecked on next Update call after delay expires
                }
 
                ObjectGuid dbtableHighGuid = ObjectGuid::Create<HighGuid::Unit>(GetEntry(), m_spawnId);
                time_t linkedRespawnTime = GetMap()->GetLinkedRespawnTime(dbtableHighGuid);
                if (!linkedRespawnTime)             // Can respawn
                    Respawn();
                else                                // the master is dead
                {
                    ObjectGuid targetGuid = sObjectMgr->GetLinkedRespawnGuid(dbtableHighGuid);
                    if (targetGuid == dbtableHighGuid) // if linking self, never respawn
                        SetRespawnTime(WEEK);
                    else
                    {
                        // else copy time from master and add a little
                        time_t baseRespawnTime = std::max(linkedRespawnTime, now);
                        time_t const offset = urand(5, MINUTE);
 
                        // linked guid can be a boss, uses std::numeric_limits<time_t>::max to never respawn in that instance
                        // we shall inherit it instead of adding and causing an overflow
                        if (baseRespawnTime <= std::numeric_limits<time_t>::max() - offset)
                            m_respawnTime = baseRespawnTime + offset;
                        else
                            m_respawnTime = std::numeric_limits<time_t>::max();
                    }
                    SaveRespawnTime(); // also save to DB immediately
                }
            }
            break;
        }
        case CORPSE:
        {
            Unit::Update(diff);
            // deathstate changed on spells update, prevent problems
            if (m_deathState != CORPSE)
                break;
 
            if (IsEngaged())
                Unit::AIUpdateTick(diff);
 
            if (m_groupLootTimer && !lootingGroupLowGUID.IsEmpty())
            {
                if (m_groupLootTimer <= diff)
                {
                    if (Group* group = sGroupMgr->GetGroupByGUID(lootingGroupLowGUID))
                        group->EndRoll(&loot, GetMap());
 
                    m_groupLootTimer = 0;
                    lootingGroupLowGUID.Clear();
                }
                else
                    m_groupLootTimer -= diff;
            }
            else if (m_corpseRemoveTime <= GameTime::GetGameTime())
            {
                RemoveCorpse(false);
                TC_LOG_DEBUG("entities.unit", "Removing corpse... {} ", GetEntry());
            }
            break;
        }
        case ALIVE:
        {
            Unit::Update(diff);
 
            // creature can be dead after Unit::Update call
            // CORPSE/DEAD state will processed at next tick (in other case death timer will be updated unexpectedly)
            if (!IsAlive())
                break;
 
            GetThreatManager().Update(diff);
            if (_spellFocusInfo.Delay)
            {
                if (_spellFocusInfo.Delay <= diff)
                    ReacquireSpellFocusTarget();
                else
                    _spellFocusInfo.Delay -= diff;
            }
 
            // periodic check to see if the creature has passed an evade boundary
            if (IsAIEnabled() && !IsInEvadeMode() && IsEngaged())
            {
                if (diff >= m_boundaryCheckTime)
                {
                    AI()->CheckInRoom();
                    m_boundaryCheckTime = 2500;
                } else
                    m_boundaryCheckTime -= diff;
            }
 
            // if periodic combat pulse is enabled and we are both in combat and in a dungeon, do this now
            if (m_combatPulseDelay > 0 && IsEngaged() && GetMap()->IsDungeon())
            {
                if (diff > m_combatPulseTime)
                    m_combatPulseTime = 0;
                else
                    m_combatPulseTime -= diff;
 
                if (m_combatPulseTime == 0)
                {
                    Map::PlayerList const& players = GetMap()->GetPlayers();
                    if (!players.isEmpty())
                        for (Map::PlayerList::const_iterator it = players.begin(); it != players.end(); ++it)
                        {
                            if (Player* player = it->GetSource())
                            {
                                if (player->IsGameMaster())
                                    continue;
 
                                if (player->IsAlive() && IsHostileTo(player))
                                    EngageWithTarget(player);
                            }
                        }
 
                    m_combatPulseTime = m_combatPulseDelay * IN_MILLISECONDS;
                }
            }
 
            Unit::AIUpdateTick(diff);
 
            // creature can be dead after UpdateAI call
            // CORPSE/DEAD state will processed at next tick (in other case death timer will be updated unexpectedly)
            if (!IsAlive())
                break;
 
            if (m_regenTimer > 0)
            {
                if (diff >= m_regenTimer)
                    m_regenTimer = 0;
                else
                    m_regenTimer -= diff;
            }
 
            if (m_regenTimer == 0)
            {
                if (!IsInEvadeMode())
                {
                    // regenerate health if not in combat or if polymorphed)
                    if (!IsEngaged() || IsPolymorphed())
                        RegenerateHealth();
                    else if (CanNotReachTarget())
                    {
                        // regenerate health if cannot reach the target and the setting is set to do so.
                        // this allows to disable the health regen of raid bosses if pathfinding has issues for whatever reason
                        if (sWorld->getBoolConfig(CONFIG_REGEN_HP_CANNOT_REACH_TARGET_IN_RAID) || !GetMap()->IsRaid())
                        {
                            RegenerateHealth();
                            TC_LOG_DEBUG("entities.unit.chase", "RegenerateHealth() enabled because Creature cannot reach the target. Detail: {}", GetDebugInfo());
                        }
                        else
                            TC_LOG_DEBUG("entities.unit.chase", "RegenerateHealth() disabled even if the Creature cannot reach the target. Detail: {}", GetDebugInfo());
                    }
                }
 
                if (GetPowerType() == POWER_ENERGY)
                    Regenerate(POWER_ENERGY);
                else
                    Regenerate(POWER_MANA);
 
                m_regenTimer = CREATURE_REGEN_INTERVAL;
            }
 
            if (CanNotReachTarget() && !IsInEvadeMode() && !GetMap()->IsRaid())
            {
                m_cannotReachTimer += diff;
                if (m_cannotReachTimer >= CREATURE_NOPATH_EVADE_TIME)
                    if (CreatureAI* ai = AI())
                        ai->EnterEvadeMode(CreatureAI::EVADE_REASON_NO_PATH);
            }
            break;
        }
        default:
            break;
    }
}
 
void Creature::Regenerate(Powers power)
{
    uint32 curValue = GetPower(power);
    uint32 maxValue = GetMaxPower(power);
 
    if (!HasUnitFlag2(UNIT_FLAG2_REGENERATE_POWER))
        return;
 
    if (curValue >= maxValue)
        return;
 
    float addvalue = 0.0f;
 
    switch (power)
    {
        case POWER_FOCUS:
        {
            // For hunter pets.
            addvalue = 24 * sWorld->getRate(RATE_POWER_FOCUS);
            break;
        }
        case POWER_ENERGY:
        {
            // For deathknight's ghoul.
            addvalue = 20;
            break;
        }
        case POWER_MANA:
        {
            // Combat and any controlled creature
            if (IsInCombat() || !GetCharmerOrOwnerGUID().IsEmpty())
            {
                if (!IsUnderLastManaUseEffect())
                {
                    float ManaIncreaseRate = sWorld->getRate(RATE_POWER_MANA);
                    float Spirit = GetStat(STAT_SPIRIT);
 
                    addvalue = uint32((Spirit / 5.0f + 17.0f) * ManaIncreaseRate);
                }
            }
            else
                addvalue = maxValue / 3;
 
            break;
        }
        default:
            return;
    }
 
    // Apply modifiers (if any).
    addvalue *= GetTotalAuraMultiplierByMiscValue(SPELL_AURA_MOD_POWER_REGEN_PERCENT, power);
 
    addvalue += GetTotalAuraModifierByMiscValue(SPELL_AURA_MOD_POWER_REGEN, power) * (IsHunterPet() ? PET_FOCUS_REGEN_INTERVAL : CREATURE_REGEN_INTERVAL) / (5 * IN_MILLISECONDS);
 
    ModifyPower(power, int32(addvalue));
}
 
void Creature::RegenerateHealth()
{
    if (!CanRegenerateHealth())
        return;
 
    uint32 curValue = GetHealth();
    uint32 maxValue = GetMaxHealth();
 
    if (curValue >= maxValue)
        return;
 
    uint32 addvalue = 0;
 
    // Not only pet, but any controlled creature (and not polymorphed)
    if (!GetCharmerOrOwnerGUID().IsEmpty() && !IsPolymorphed())
    {
        float HealthIncreaseRate = sWorld->getRate(RATE_HEALTH);
        float Spirit = GetStat(STAT_SPIRIT);
 
        if (GetPower(POWER_MANA) > 0)
            addvalue = uint32(Spirit * 0.25 * HealthIncreaseRate);
        else
            addvalue = uint32(Spirit * 0.80 * HealthIncreaseRate);
    }
    else
        addvalue = maxValue/3;
 
    // Apply modifiers (if any).
    addvalue *= GetTotalAuraMultiplier(SPELL_AURA_MOD_HEALTH_REGEN_PERCENT);
 
    addvalue += GetTotalAuraModifier(SPELL_AURA_MOD_REGEN) * CREATURE_REGEN_INTERVAL  / (5 * IN_MILLISECONDS);
 
    ModifyHealth(addvalue);
}
 
void Creature::DoFleeToGetAssistance()
{
    if (!GetVictim())
        return;
 
    if (HasAuraType(SPELL_AURA_PREVENTS_FLEEING))
        return;
 
    float radius = sWorld->getFloatConfig(CONFIG_CREATURE_FAMILY_FLEE_ASSISTANCE_RADIUS);
    if (radius >0)
    {
        Creature* creature = nullptr;
        Trinity::NearestAssistCreatureInCreatureRangeCheck u_check(this, GetVictim(), radius);
        Trinity::CreatureLastSearcher<Trinity::NearestAssistCreatureInCreatureRangeCheck> searcher(this, creature, u_check);
        Cell::VisitGridObjects(this, searcher, radius);
 
        SetNoSearchAssistance(true);
 
        if (!creature)
            SetControlled(true, UNIT_STATE_FLEEING);
        else
            GetMotionMaster()->MoveSeekAssistance(creature->GetPositionX(), creature->GetPositionY(), creature->GetPositionZ());
    }
}
 
bool Creature::AIM_Destroy()
{
    PopAI();
    RefreshAI();
    return true;
}
 
bool Creature::AIM_Create(CreatureAI* ai /*= nullptr*/)
{
    Motion_Initialize();
 
    SetAI(ai ? ai : FactorySelector::SelectAI(this));
 
    return true;
}
 
bool Creature::AIM_Initialize(CreatureAI* ai)
{
    if (!AIM_Create(ai))
        return false;
 
    AI()->InitializeAI();
    if (GetVehicleKit())
        GetVehicleKit()->Reset();
    return true;
}
 
void Creature::Motion_Initialize()
{
    if (m_formation)
    {
        if (m_formation->GetLeader() == this)
            m_formation->FormationReset(false);
        else if (m_formation->IsFormed())
        {
            GetMotionMaster()->MoveIdle(); // wait the order of leader
            return;
        }
    }
 
    GetMotionMaster()->Initialize();
}
 
bool Creature::Create(ObjectGuid::LowType guidlow, Map* map, uint32 phaseMask, uint32 entry, Position const& pos, CreatureData const* data /*= nullptr*/, uint32 vehId /*= 0*/, bool dynamic)
{
    ASSERT(map);
    SetMap(map);
    SetPhaseMask(phaseMask, false);
 
    // Set if this creature can handle dynamic spawns
    if (!dynamic)
        SetRespawnCompatibilityMode();
 
    CreatureTemplate const* cinfo = sObjectMgr->GetCreatureTemplate(entry);
    if (!cinfo)
    {
        TC_LOG_ERROR("sql.sql", "Creature::Create(): creature template (guidlow: {}, entry: {}) does not exist.", guidlow, entry);
        return false;
    }
 
    Relocate(pos);
 
    // Check if the position is valid before calling CreateFromProto(), otherwise we might add Auras to Creatures at
    // invalid position, triggering a crash about Auras not removed in the destructor
    if (!IsPositionValid())
    {
        TC_LOG_ERROR("entities.unit", "Creature::Create(): given coordinates for creature (guidlow {}, entry {}) are not valid (X: {}, Y: {}, Z: {}, O: {})", guidlow, entry, pos.GetPositionX(), pos.GetPositionY(), pos.GetPositionZ(), pos.GetOrientation());
        return false;
    }
    {
        // area/zone id is needed immediately for ZoneScript::GetCreatureEntry hook before it is known which creature template to load (no model/scale available yet)
        PositionFullTerrainStatus terrainStatus;
        GetMap()->GetFullTerrainStatusForPosition(GetPhaseMask(), GetPositionX(), GetPositionY(), GetPositionZ(), terrainStatus);
        ProcessPositionDataChanged(terrainStatus);
    }
 
    // Allow players to see those units while dead, do it here (mayby altered by addon auras)
    if (cinfo->type_flags & CREATURE_TYPE_FLAG_VISIBLE_TO_GHOSTS)
        m_serverSideVisibility.SetValue(SERVERSIDE_VISIBILITY_GHOST, GHOST_VISIBILITY_ALIVE | GHOST_VISIBILITY_GHOST);
 
    if (!CreateFromProto(guidlow, entry, data, vehId))
        return false;
 
    if (GetCreatureTemplate()->flags_extra & CREATURE_FLAG_EXTRA_DUNGEON_BOSS && map->IsDungeon())
        m_respawnDelay = 0; // special value, prevents respawn for dungeon bosses unless overridden
 
    switch (GetCreatureTemplate()->rank)
    {
        case CREATURE_ELITE_RARE:
            m_corpseDelay = sWorld->getIntConfig(CONFIG_CORPSE_DECAY_RARE);
            break;
        case CREATURE_ELITE_ELITE:
            m_corpseDelay = sWorld->getIntConfig(CONFIG_CORPSE_DECAY_ELITE);
            break;
        case CREATURE_ELITE_RAREELITE:
            m_corpseDelay = sWorld->getIntConfig(CONFIG_CORPSE_DECAY_RAREELITE);
            break;
        case CREATURE_ELITE_WORLDBOSS:
            m_corpseDelay = sWorld->getIntConfig(CONFIG_CORPSE_DECAY_WORLDBOSS);
            break;
        default:
            m_corpseDelay = sWorld->getIntConfig(CONFIG_CORPSE_DECAY_NORMAL);
            break;
    }
 
    LastUsedScriptID = GetScriptId();
 
    if (IsSpiritHealer() || IsSpiritGuide() || (GetCreatureTemplate()->flags_extra & CREATURE_FLAG_EXTRA_GHOST_VISIBILITY))
    {
        m_serverSideVisibility.SetValue(SERVERSIDE_VISIBILITY_GHOST, GHOST_VISIBILITY_GHOST);
        m_serverSideVisibilityDetect.SetValue(SERVERSIDE_VISIBILITY_GHOST, GHOST_VISIBILITY_GHOST);
    }
 
    if (GetCreatureTemplate()->flags_extra & CREATURE_FLAG_EXTRA_IGNORE_PATHFINDING)
        AddUnitState(UNIT_STATE_IGNORE_PATHFINDING);
 
    if (GetCreatureTemplate()->flags_extra & CREATURE_FLAG_EXTRA_IMMUNITY_KNOCKBACK)
    {
        ApplySpellImmune(0, IMMUNITY_EFFECT, SPELL_EFFECT_KNOCK_BACK, true);
        ApplySpellImmune(0, IMMUNITY_EFFECT, SPELL_EFFECT_KNOCK_BACK_DEST, true);
    }
 
    GetThreatManager().Initialize();
 
    return true;
}
 
Unit* Creature::SelectVictim()
{
    Unit* target = nullptr;
 
    if (CanHaveThreatList())
        target = GetThreatManager().GetCurrentVictim();
    else if (!HasReactState(REACT_PASSIVE))
    {
        // We're a player pet, probably
        target = getAttackerForHelper();
        if (!target && IsSummon())
        {
            if (Unit* owner = ToTempSummon()->GetOwner())
            {
                if (owner->IsInCombat())
                    target = owner->getAttackerForHelper();
                if (!target)
                {
                    for (ControlList::const_iterator itr = owner->m_Controlled.begin(); itr != owner->m_Controlled.end(); ++itr)
                    {
                        if ((*itr)->IsInCombat())
                        {
                            target = (*itr)->getAttackerForHelper();
                            if (target)
                                break;
                        }
                    }
                }
            }
        }
    }
    else
        return nullptr;
 
    if (target && _IsTargetAcceptable(target) && CanCreatureAttack(target))
    {
        if (!HasSpellFocus())
            SetInFront(target);
        return target;
    }
 
    if (GetVehicle())
        return nullptr;
 
    Unit::AuraEffectList const& iAuras = GetAuraEffectsByType(SPELL_AURA_MOD_INVISIBILITY);
    if (!iAuras.empty())
    {
        for (Unit::AuraEffectList::const_iterator itr = iAuras.begin(); itr != iAuras.end(); ++itr)
        {
            if ((*itr)->GetBase()->IsPermanent())
            {
                AI()->EnterEvadeMode(CreatureAI::EVADE_REASON_OTHER);
                break;
            }
        }
        return nullptr;
    }
 
    // enter in evade mode in other case
    AI()->EnterEvadeMode(CreatureAI::EVADE_REASON_NO_HOSTILES);
 
    return nullptr;
}
 
void Creature::InitializeReactState()
{
    if (IsTotem() || IsTrigger() || IsCritter() || IsSpiritService())
        SetReactState(REACT_PASSIVE);
    /*
    else if (IsCivilian())
        SetReactState(REACT_DEFENSIVE);
    */
    else
        SetReactState(REACT_AGGRESSIVE);
}
 
bool Creature::isCanInteractWithBattleMaster(Player* player, bool msg) const
{
    if (!IsBattleMaster())
        return false;
 
    BattlegroundTypeId bgTypeId = sBattlegroundMgr->GetBattleMasterBG(GetEntry());
    if (!msg)
        return player->GetBGAccessByLevel(bgTypeId);
 
    if (!player->GetBGAccessByLevel(bgTypeId))
    {
        ClearGossipMenuFor(player);
        switch (bgTypeId)
        {
            case BATTLEGROUND_AV:  SendGossipMenuFor(player, 7616, this); break;
            case BATTLEGROUND_WS:  SendGossipMenuFor(player, 7599, this); break;
            case BATTLEGROUND_AB:  SendGossipMenuFor(player, 7642, this); break;
            case BATTLEGROUND_EY:
            case BATTLEGROUND_NA:
            case BATTLEGROUND_BE:
            case BATTLEGROUND_AA:
            case BATTLEGROUND_RL:
            case BATTLEGROUND_SA:
            case BATTLEGROUND_DS:
            case BATTLEGROUND_RV:  SendGossipMenuFor(player, 10024, this); break;
            default: break;
        }
        return false;
    }
    return true;
}
 
bool Creature::CanResetTalents(Player* player, bool pet) const
{
    Trainer::Trainer const* trainer = sObjectMgr->GetTrainer(GetEntry());
    if (!trainer)
        return false;
 
    return player->GetLevel() >= 10 &&
        (trainer->GetTrainerType() == (pet ? Trainer::Type::Pet : Trainer::Type::Class)) &&
        trainer->IsTrainerValidForPlayer(player);
}
 
Player* Creature::GetLootRecipient() const
{
    if (!m_lootRecipient)
        return nullptr;
 
    return ObjectAccessor::FindConnectedPlayer(m_lootRecipient);
}
 
Group* Creature::GetLootRecipientGroup() const
{
    if (m_lootRecipientGroup.IsEmpty())
        return nullptr;
 
    return sGroupMgr->GetGroupByGUID(m_lootRecipientGroup);
}
 
void Creature::SetLootRecipient(Unit* unit, bool withGroup)
{
    // set the player whose group should receive the right
    // to loot the creature after it dies
    // should be set to nullptr after the loot disappears
 
    if (!unit)
    {
        m_lootRecipient.Clear();
        m_lootRecipientGroup.Clear();
        RemoveDynamicFlag(UNIT_DYNFLAG_LOOTABLE|UNIT_DYNFLAG_TAPPED);
        return;
    }
 
    if (unit->GetTypeId() != TYPEID_PLAYER && !unit->IsVehicle())
        return;
 
    Player* player = unit->GetCharmerOrOwnerPlayerOrPlayerItself();
    if (!player)                                             // normal creature, no player involved
        return;
 
    m_lootRecipient = player->GetGUID();
    if (withGroup)
    {
        if (Group* group = player->GetGroup())
            m_lootRecipientGroup = group->GetGUID();
    }
    else
        m_lootRecipientGroup = ObjectGuid::Empty;
 
    SetDynamicFlag(UNIT_DYNFLAG_TAPPED);
}
 
// return true if this creature is tapped by the player or by a member of his group.
bool Creature::isTappedBy(Player const* player) const
{
    if (player->GetGUID() == m_lootRecipient)
        return true;
 
    Group const* playerGroup = player->GetGroup();
    if (!playerGroup || playerGroup != GetLootRecipientGroup()) // if we dont have a group we arent the recipient
        return false;                                           // if creature doesnt have group bound it means it was solo killed by someone else
 
    return true;
}
 
void Creature::SaveToDB()
{
    // this should only be used when the creature has already been loaded
    // preferably after adding to map, because mapid may not be valid otherwise
    CreatureData const* data = sObjectMgr->GetCreatureData(m_spawnId);
    if (!data)
    {
        TC_LOG_ERROR("entities.unit", "Creature::SaveToDB failed, cannot get creature data!");
        return;
    }
 
    uint32 mapId = GetTransport() ? GetTransport()->GetGOInfo()->moTransport.mapID : GetMapId();
    SaveToDB(mapId, data->spawnMask, GetPhaseMask());
}
 
void Creature::SaveToDB(uint32 mapid, uint8 spawnMask, uint32 phaseMask)
{
    // update in loaded data
    if (!m_spawnId)
        m_spawnId = sObjectMgr->GenerateCreatureSpawnId();
 
    CreatureData& data = sObjectMgr->NewOrExistCreatureData(m_spawnId);
 
    uint32 displayId = GetNativeDisplayId();
    uint32 npcflag = GetNpcFlags();
    uint32 unit_flags = GetUnitFlags();
    uint32 dynamicflags = GetDynamicFlags();
 
    // check if it's a custom model and if not, use 0 for displayId
    CreatureTemplate const* cinfo = GetCreatureTemplate();
    if (cinfo)
    {
        if (displayId == cinfo->Modelid1 || displayId == cinfo->Modelid2 ||
            displayId == cinfo->Modelid3 || displayId == cinfo->Modelid4)
            displayId = 0;
 
        if (npcflag == cinfo->npcflag)
            npcflag = 0;
 
        if (unit_flags == cinfo->unit_flags)
            unit_flags = 0;
 
        if (dynamicflags == cinfo->dynamicflags)
            dynamicflags = 0;
    }
 
    if (!data.spawnId)
        data.spawnId = m_spawnId;
    ASSERT(data.spawnId == m_spawnId);
    data.id = GetEntry();
    data.phaseMask = phaseMask;
    data.displayid = displayId;
    data.equipmentId = GetCurrentEquipmentId();
    if (!GetTransport())
    {
        data.mapId = GetMapId();
        data.spawnPoint.Relocate(this);
    }
    else
    {
        data.mapId = mapid;
        data.spawnPoint.Relocate(GetTransOffsetX(), GetTransOffsetY(), GetTransOffsetZ(), GetTransOffsetO());
    }
    data.spawntimesecs = m_respawnDelay;
    // prevent add data integrity problems
    data.wander_distance = GetDefaultMovementType() == IDLE_MOTION_TYPE ? 0.0f : m_wanderDistance;
    data.currentwaypoint = 0;
    data.curhealth = GetHealth();
    data.curmana = GetPower(POWER_MANA);
    // prevent add data integrity problems
    data.movementType = !m_wanderDistance && GetDefaultMovementType() == RANDOM_MOTION_TYPE
        ? IDLE_MOTION_TYPE : GetDefaultMovementType();
    data.spawnMask = spawnMask;
    data.npcflag = npcflag;
    data.unit_flags = unit_flags;
    data.dynamicflags = dynamicflags;
    if (!data.spawnGroupData)
        data.spawnGroupData = sObjectMgr->GetDefaultSpawnGroup();
 
    // update in DB
    WorldDatabaseTransaction trans = WorldDatabase.BeginTransaction();
 
    WorldDatabasePreparedStatement* stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_CREATURE);
    stmt->setUInt32(0, m_spawnId);
 
    trans->Append(stmt);
 
    uint8 index = 0;
 
    stmt = WorldDatabase.GetPreparedStatement(WORLD_INS_CREATURE);
    stmt->setUInt32(index++, m_spawnId);
    stmt->setUInt32(index++, GetEntry());
    stmt->setUInt16(index++, uint16(mapid));
    stmt->setUInt8(index++, spawnMask);
    stmt->setUInt32(index++, GetPhaseMask());
    stmt->setUInt32(index++, displayId);
    stmt->setUInt8(index++, GetCurrentEquipmentId());
    stmt->setFloat(index++, GetPositionX());
    stmt->setFloat(index++, GetPositionY());
    stmt->setFloat(index++, GetPositionZ());
    stmt->setFloat(index++, GetOrientation());
    stmt->setUInt32(index++, m_respawnDelay);
    stmt->setFloat(index++, m_wanderDistance);
    stmt->setUInt32(index++, 0);
    stmt->setUInt32(index++, GetHealth());
    stmt->setUInt32(index++, GetPower(POWER_MANA));
    stmt->setUInt8(index++, uint8(GetDefaultMovementType()));
    stmt->setUInt32(index++, npcflag);
    stmt->setUInt32(index++, unit_flags);
    stmt->setUInt32(index++, dynamicflags);
    trans->Append(stmt);
 
    WorldDatabase.CommitTransaction(trans);
}
 
void Creature::SelectLevel()
{
    CreatureTemplate const* cInfo = GetCreatureTemplate();
 
    // level
    uint8 minlevel = std::min(cInfo->maxlevel, cInfo->minlevel);
    uint8 maxlevel = std::max(cInfo->maxlevel, cInfo->minlevel);
    uint8 level = minlevel == maxlevel ? minlevel : urand(minlevel, maxlevel);
    SetLevel(level);
}
 
void Creature::UpdateLevelDependantStats()
{
    CreatureTemplate const* cInfo = GetCreatureTemplate();
    uint32 rank = IsPet() ? 0 : cInfo->rank;
    CreatureBaseStats const* stats = sObjectMgr->GetCreatureBaseStats(GetLevel(), cInfo->unit_class);
 
    // health
    float healthmod = _GetHealthMod(rank);
 
    uint32 basehp = stats->GenerateHealth(cInfo);
    uint32 health = uint32(basehp * healthmod);
 
    SetCreateHealth(health);
    SetMaxHealth(health);
    SetHealth(health);
    ResetPlayerDamageReq();
 
    // mana
    uint32 mana = stats->GenerateMana(cInfo);
    SetCreateMana(mana);
 
    switch (GetClass())
    {
        case UNIT_CLASS_PALADIN:
        case UNIT_CLASS_MAGE:
            SetMaxPower(POWER_MANA, mana);
            SetFullPower(POWER_MANA);
            break;
        default: // We don't set max power here, 0 makes power bar hidden
            break;
    }
 
    SetStatFlatModifier(UNIT_MOD_HEALTH, BASE_VALUE, (float)health);
 
    // damage
    float basedamage = stats->GenerateBaseDamage(cInfo);
 
    float weaponBaseMinDamage = basedamage;
    float weaponBaseMaxDamage = basedamage * 1.5f;
 
    SetBaseWeaponDamage(BASE_ATTACK, MINDAMAGE, weaponBaseMinDamage);
    SetBaseWeaponDamage(BASE_ATTACK, MAXDAMAGE, weaponBaseMaxDamage);
 
    SetBaseWeaponDamage(OFF_ATTACK, MINDAMAGE, weaponBaseMinDamage);
    SetBaseWeaponDamage(OFF_ATTACK, MAXDAMAGE, weaponBaseMaxDamage);
 
    SetBaseWeaponDamage(RANGED_ATTACK, MINDAMAGE, weaponBaseMinDamage);
    SetBaseWeaponDamage(RANGED_ATTACK, MAXDAMAGE, weaponBaseMaxDamage);
 
    m_baseAttackPower       = stats->AttackPower;
    m_baseRangedAttackPower = stats->RangedAttackPower;
 
    float armor = (float)stats->GenerateArmor(cInfo); 
    SetStatFlatModifier(UNIT_MOD_ARMOR, BASE_VALUE, armor);
}
 
float Creature::_GetHealthMod(int32 Rank)
{
    switch (Rank)                                           // define rates for each elite rank
    {
        case CREATURE_ELITE_NORMAL:
            return sWorld->getRate(RATE_CREATURE_NORMAL_HP);
        case CREATURE_ELITE_ELITE:
            return sWorld->getRate(RATE_CREATURE_ELITE_ELITE_HP);
        case CREATURE_ELITE_RAREELITE:
            return sWorld->getRate(RATE_CREATURE_ELITE_RAREELITE_HP);
        case CREATURE_ELITE_WORLDBOSS:
            return sWorld->getRate(RATE_CREATURE_ELITE_WORLDBOSS_HP);
        case CREATURE_ELITE_RARE:
            return sWorld->getRate(RATE_CREATURE_ELITE_RARE_HP);
        default:
            return sWorld->getRate(RATE_CREATURE_ELITE_ELITE_HP);
    }
}
 
void Creature::LowerPlayerDamageReq(uint32 unDamage)
{
    if (m_PlayerDamageReq)
        m_PlayerDamageReq > unDamage ? m_PlayerDamageReq -= unDamage : m_PlayerDamageReq = 0;
}
 
float Creature::_GetDamageMod(int32 Rank)
{
    switch (Rank)                                           // define rates for each elite rank
    {
        case CREATURE_ELITE_NORMAL:
            return sWorld->getRate(RATE_CREATURE_NORMAL_DAMAGE);
        case CREATURE_ELITE_ELITE:
            return sWorld->getRate(RATE_CREATURE_ELITE_ELITE_DAMAGE);
        case CREATURE_ELITE_RAREELITE:
            return sWorld->getRate(RATE_CREATURE_ELITE_RAREELITE_DAMAGE);
        case CREATURE_ELITE_WORLDBOSS:
            return sWorld->getRate(RATE_CREATURE_ELITE_WORLDBOSS_DAMAGE);
        case CREATURE_ELITE_RARE:
            return sWorld->getRate(RATE_CREATURE_ELITE_RARE_DAMAGE);
        default:
            return sWorld->getRate(RATE_CREATURE_ELITE_ELITE_DAMAGE);
    }
}
 
float Creature::GetSpellDamageMod(int32 Rank) const
{
    switch (Rank)                                           // define rates for each elite rank
    {
        case CREATURE_ELITE_NORMAL:
            return sWorld->getRate(RATE_CREATURE_NORMAL_SPELLDAMAGE);
        case CREATURE_ELITE_ELITE:
            return sWorld->getRate(RATE_CREATURE_ELITE_ELITE_SPELLDAMAGE);
        case CREATURE_ELITE_RAREELITE:
            return sWorld->getRate(RATE_CREATURE_ELITE_RAREELITE_SPELLDAMAGE);
        case CREATURE_ELITE_WORLDBOSS:
            return sWorld->getRate(RATE_CREATURE_ELITE_WORLDBOSS_SPELLDAMAGE);
        case CREATURE_ELITE_RARE:
            return sWorld->getRate(RATE_CREATURE_ELITE_RARE_SPELLDAMAGE);
        default:
            return sWorld->getRate(RATE_CREATURE_ELITE_ELITE_SPELLDAMAGE);
    }
}
 
bool Creature::CreateFromProto(ObjectGuid::LowType guidlow, uint32 entry, CreatureData const* data /*= nullptr*/, uint32 vehId /*= 0*/)
{
    SetZoneScript();
    if (GetZoneScript() && data)
    {
        entry = GetZoneScript()->GetCreatureEntry(guidlow, data);
        if (!entry)
            return false;
    }
 
    CreatureTemplate const* cinfo = sObjectMgr->GetCreatureTemplate(entry);
    if (!cinfo)
    {
        TC_LOG_ERROR("sql.sql", "Creature::CreateFromProto(): creature template (guidlow: {}, entry: {}) does not exist.", guidlow, entry);
        return false;
    }
 
    SetOriginalEntry(entry);
 
    if (vehId || cinfo->VehicleId)
        Object::_Create(ObjectGuid::Create<HighGuid::Vehicle>(entry, guidlow));
    else
        Object::_Create(ObjectGuid::Create<HighGuid::Unit>(entry, guidlow));
 
    if (!UpdateEntry(entry, data))
        return false;
 
    if (!vehId)
    {
        if (GetCreatureTemplate()->VehicleId)
        {
            vehId = GetCreatureTemplate()->VehicleId;
            entry = GetCreatureTemplate()->Entry;
        }
        else
            vehId = cinfo->VehicleId;
    }
 
    if (vehId)
        if (CreateVehicleKit(vehId, entry))
            UpdateDisplayPower();
 
    return true;
}
 
bool Creature::LoadFromDB(ObjectGuid::LowType spawnId, Map* map, bool addToMap, bool allowDuplicate)
{
    if (!allowDuplicate)
    {
        // If an alive instance of this spawnId is already found, skip creation
        // If only dead instance(s) exist, despawn them and spawn a new (maybe also dead) version
        const auto creatureBounds = map->GetCreatureBySpawnIdStore().equal_range(spawnId);
        std::vector <Creature*> despawnList;
 
        if (creatureBounds.first != creatureBounds.second)
        {
            for (auto itr = creatureBounds.first; itr != creatureBounds.second; ++itr)
            {
                if (itr->second->IsAlive())
                {
                    TC_LOG_DEBUG("maps", "Would have spawned {} but {} already exists", spawnId, creatureBounds.first->second->GetGUID().ToString());
                    return false;
                }
                else
                {
                    despawnList.push_back(itr->second);
                    TC_LOG_DEBUG("maps", "Despawned dead instance of spawn {} ({})", spawnId, itr->second->GetGUID().ToString());
                }
            }
 
            for (Creature* despawnCreature : despawnList)
            {
                despawnCreature->AddObjectToRemoveList();
            }
        }
    }
 
    CreatureData const* data = sObjectMgr->GetCreatureData(spawnId);
 
    if (!data)
    {
        TC_LOG_ERROR("sql.sql", "Creature (SpawnID {}) not found in table `creature`, can't load. ", spawnId);
        return false;
    }
 
    m_spawnId = spawnId;
 
    m_respawnCompatibilityMode = ((data->spawnGroupData->flags & SPAWNGROUP_FLAG_COMPATIBILITY_MODE) != 0);
    m_creatureData = data;
    m_wanderDistance = data->wander_distance;
    m_respawnDelay = data->spawntimesecs;
 
    if (!Create(map->GenerateLowGuid<HighGuid::Unit>(), map, data->phaseMask, data->id, data->spawnPoint, data, 0U , !m_respawnCompatibilityMode))
        return false;
 
    //We should set first home position, because then AI calls home movement
    SetHomePosition(*this);
 
    m_deathState = ALIVE;
 
    m_respawnTime = GetMap()->GetCreatureRespawnTime(m_spawnId);
 
    if (!m_respawnTime && !map->IsSpawnGroupActive(data->spawnGroupData->groupId))
    {
        if (!m_respawnCompatibilityMode)
        {
            // @todo pools need fixing! this is just a temporary thing, but they violate dynspawn principles
            if (!sPoolMgr->IsPartOfAPool<Creature>(spawnId))
            {
                TC_LOG_ERROR("entities.unit", "Creature (SpawnID {}) trying to load in inactive spawn group '{}':\n{}", spawnId, data->spawnGroupData->name, GetDebugInfo());
                return false;
            }
        }
 
        m_respawnTime = GameTime::GetGameTime() + urand(4, 7);
    }
 
    if (m_respawnTime)
    {
        if (!m_respawnCompatibilityMode)
        {
            // @todo same as above
            if (!sPoolMgr->IsPartOfAPool<Creature>(spawnId))
            {
                TC_LOG_ERROR("entities.unit", "Creature (SpawnID {}) trying to load despite a respawn timer in progress:\n{}", spawnId, GetDebugInfo());
                return false;
            }
        }
        else
        {
            // compatibility mode creatures will be respawned in ::Update()
            m_deathState = DEAD;
        }
 
        if (CanFly())
        {
            float tz = map->GetHeight(GetPhaseMask(), data->spawnPoint, true, MAX_FALL_DISTANCE);
            if (data->spawnPoint.GetPositionZ() - tz > 0.1f && Trinity::IsValidMapCoord(tz))
                Relocate(data->spawnPoint.GetPositionX(), data->spawnPoint.GetPositionY(), tz);
        }
    }
 
    SetSpawnHealth();
 
    // checked at creature_template loading
    m_defaultMovementType = MovementGeneratorType(data->movementType);
 
    m_stringIds[AsUnderlyingType(StringIdType::Spawn)] = &data->StringId;
 
    if (addToMap && !GetMap()->AddToMap(this))
        return false;
    return true;
}
 
void Creature::SetCanDualWield(bool value)
{
    Unit::SetCanDualWield(value);
    UpdateDamagePhysical(OFF_ATTACK);
}
 
void Creature::LoadEquipment(int8 id, bool force /*= true*/)
{
    if (id == 0)
    {
        if (force)
        {
            for (uint8 i = 0; i < MAX_EQUIPMENT_ITEMS; ++i)
                SetVirtualItem(i, 0);
            m_equipmentId = 0;
        }
 
        return;
    }
 
    EquipmentInfo const* einfo = sObjectMgr->GetEquipmentInfo(GetEntry(), id);
    if (!einfo)
        return;
 
    m_equipmentId = id;
    for (uint8 i = 0; i < MAX_EQUIPMENT_ITEMS; ++i)
        SetVirtualItem(i, einfo->ItemEntry[i]);
}
 
void Creature::SetSpawnHealth()
{
    if (_regenerateHealthLock)
        return;
 
    uint32 curhealth;
    if (m_creatureData && !_regenerateHealth)
    {
        curhealth = m_creatureData->curhealth;
        if (curhealth)
        {
            curhealth = uint32(curhealth*_GetHealthMod(GetCreatureTemplate()->rank));
            if (curhealth < 1)
                curhealth = 1;
        }
        SetPower(POWER_MANA, m_creatureData->curmana);
    }
    else
    {
        curhealth = GetMaxHealth();
        SetPower(POWER_MANA, GetMaxPower(POWER_MANA));
    }
 
    SetHealth((m_deathState == ALIVE || m_deathState == JUST_RESPAWNED) ? curhealth : 0);
}
 
void Creature::LoadTemplateRoot()
{
    if (GetMovementTemplate().IsRooted())
        SetControlled(true, UNIT_STATE_ROOT);
}
 
bool Creature::hasQuest(uint32 quest_id) const
{
    return sObjectMgr->GetCreatureQuestRelations(GetEntry()).HasQuest(quest_id);
}
 
bool Creature::hasInvolvedQuest(uint32 quest_id) const
{
    return sObjectMgr->GetCreatureQuestInvolvedRelations(GetEntry()).HasQuest(quest_id);
}
 
/*static*/ bool Creature::DeleteFromDB(ObjectGuid::LowType spawnId)
{
    CreatureData const* data = sObjectMgr->GetCreatureData(spawnId);
    if (!data)
        return false;
 
    CharacterDatabaseTransaction charTrans = CharacterDatabase.BeginTransaction();
 
    sMapMgr->DoForAllMapsWithMapId(data->mapId,
        [spawnId, charTrans](Map* map) -> void
        {
            // despawn all active creatures, and remove their respawns
            std::vector<Creature*> toUnload;
            for (auto const& pair : Trinity::Containers::MapEqualRange(map->GetCreatureBySpawnIdStore(), spawnId))
                toUnload.push_back(pair.second);
            for (Creature* creature : toUnload)
                map->AddObjectToRemoveList(creature);
            map->RemoveRespawnTime(SPAWN_TYPE_CREATURE, spawnId, charTrans);
        }
    );
 
    // delete data from memory ...
    sObjectMgr->DeleteCreatureData(spawnId);
 
    CharacterDatabase.CommitTransaction(charTrans);
 
    WorldDatabaseTransaction trans = WorldDatabase.BeginTransaction();
 
    // ... and the database
    WorldDatabasePreparedStatement* stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_CREATURE);
    stmt->setUInt32(0, spawnId);
    trans->Append(stmt);
 
    stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_SPAWNGROUP_MEMBER);
    stmt->setUInt8(0, uint8(SPAWN_TYPE_CREATURE));
    stmt->setUInt32(1, spawnId);
    trans->Append(stmt);
 
    stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_CREATURE_ADDON);
    stmt->setUInt32(0, spawnId);
    trans->Append(stmt);
 
    stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_GAME_EVENT_CREATURE);
    stmt->setUInt32(0, spawnId);
    trans->Append(stmt);
 
    stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_GAME_EVENT_MODEL_EQUIP);
    stmt->setUInt32(0, spawnId);
    trans->Append(stmt);
 
    stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_LINKED_RESPAWN);
    stmt->setUInt32(0, spawnId);
    stmt->setUInt32(1, LINKED_RESPAWN_CREATURE_TO_CREATURE);
    trans->Append(stmt);
 
    stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_LINKED_RESPAWN);
    stmt->setUInt32(0, spawnId);
    stmt->setUInt32(1, LINKED_RESPAWN_CREATURE_TO_GO);
    trans->Append(stmt);
 
    stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_LINKED_RESPAWN_MASTER);
    stmt->setUInt32(0, spawnId);
    stmt->setUInt32(1, LINKED_RESPAWN_CREATURE_TO_CREATURE);
    trans->Append(stmt);
 
    stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_LINKED_RESPAWN_MASTER);
    stmt->setUInt32(0, spawnId);
    stmt->setUInt32(1, LINKED_RESPAWN_GO_TO_CREATURE);
    trans->Append(stmt);
 
    WorldDatabase.CommitTransaction(trans);
 
    return true;
}
 
bool Creature::IsInvisibleDueToDespawn() const
{
    if (Unit::IsInvisibleDueToDespawn())
        return true;
 
    if (IsAlive() || isDying() || m_corpseRemoveTime > GameTime::GetGameTime())
        return false;
 
    return true;
}
 
bool Creature::CanAlwaysSee(WorldObject const* obj) const
{
    if (IsAIEnabled() && AI()->CanSeeAlways(obj))
        return true;
 
    return false;
}
 
bool Creature::CanStartAttack(Unit const* who, bool force) const
{
    if (IsCivilian())
        return false;
 
    // This set of checks is should be done only for creatures
    if ((IsImmuneToNPC() && !who->HasUnitFlag(UNIT_FLAG_PLAYER_CONTROLLED))
        || (IsImmuneToPC() && who->HasUnitFlag(UNIT_FLAG_PLAYER_CONTROLLED)))
        return false;
 
    // Do not attack non-combat pets
    if (who->GetTypeId() == TYPEID_UNIT && who->GetCreatureType() == CREATURE_TYPE_NON_COMBAT_PET)
        return false;
 
    if (!CanFly() && (GetDistanceZ(who) > CREATURE_Z_ATTACK_RANGE + m_CombatDistance))
        //|| who->IsControlledByPlayer() && who->IsFlying()))
        // we cannot check flying for other creatures, too much map/vmap calculation
        return false;
 
    if (!force)
    {
        if (!_IsTargetAcceptable(who))
            return false;
 
        if (IsNeutralToAll() || !IsWithinDistInMap(who, GetAttackDistance(who) + m_CombatDistance))
            return false;
    }
 
    if (!CanCreatureAttack(who, force))
        return false;
 
    // No aggro from gray creatures
    if (CheckNoGrayAggroConfig(who->GetLevelForTarget(this), GetLevelForTarget(who)))
        return false;
 
    return IsWithinLOSInMap(who);
}
 
bool Creature::CheckNoGrayAggroConfig(uint32 playerLevel, uint32 creatureLevel) const
{
    if (Trinity::XP::GetColorCode(playerLevel, creatureLevel) != XP_GRAY)
        return false;
 
    uint32 notAbove = sWorld->getIntConfig(CONFIG_NO_GRAY_AGGRO_ABOVE);
    uint32 notBelow = sWorld->getIntConfig(CONFIG_NO_GRAY_AGGRO_BELOW);
    if (notAbove == 0 && notBelow == 0)
        return false;
 
    if (playerLevel <= notBelow || (playerLevel >= notAbove && notAbove > 0))
        return true;
    return false;
}
 
float Creature::GetAttackDistance(Unit const* player) const
{
    float aggroRate = sWorld->getRate(RATE_CREATURE_AGGRO);
    if (aggroRate == 0)
        return 0.0f;
 
    // WoW Wiki: the minimum radius seems to be 5 yards, while the maximum range is 45 yards
    float maxRadius = (45.0f * sWorld->getRate(RATE_CREATURE_AGGRO));
    float minRadius = (5.0f * sWorld->getRate(RATE_CREATURE_AGGRO));
 
    uint8 expansionMaxLevel = uint8(GetMaxLevelForExpansion(GetCreatureTemplate()->expansion));
    int32 levelDifference = GetLevel() - player->GetLevel();
 
    // The aggro radius for creatures with equal level as the player is 20 yards.
    // The combatreach should not get taken into account for the distance so we drop it from the range (see Supremus as expample)
    float baseAggroDistance = 20.0f - GetCombatReach();
 
    // + - 1 yard for each level difference between player and creature
    float aggroRadius = baseAggroDistance + float(levelDifference);
 
    // detect range auras
    if (float(GetLevel() + 5) <= sWorld->getIntConfig(CONFIG_MAX_PLAYER_LEVEL))
    {
        aggroRadius += GetTotalAuraModifier(SPELL_AURA_MOD_DETECT_RANGE);
        aggroRadius += player->GetTotalAuraModifier(SPELL_AURA_MOD_DETECTED_RANGE);
    }
 
    // The aggro range of creatures with higher levels than the total player level for the expansion should get the maxlevel treatment
    // This makes sure that creatures such as bosses wont have a bigger aggro range than the rest of the npc's
    // The following code is used for blizzlike behaivior such as skippable bosses
    if (GetLevel() > expansionMaxLevel)
        aggroRadius = baseAggroDistance + float(expansionMaxLevel - player->GetLevel());
 
    // Make sure that we wont go over the total range limits
    if (aggroRadius > maxRadius)
        aggroRadius = maxRadius;
    else if (aggroRadius < minRadius)
        aggroRadius = minRadius;
 
    return (aggroRadius * aggroRate);
}
 
void Creature::setDeathState(DeathState s)
{
    Unit::setDeathState(s);
 
    if (s == JUST_DIED)
    {
        m_corpseRemoveTime = GameTime::GetGameTime() + m_corpseDelay;
 
        uint32 respawnDelay = m_respawnDelay;
        if (uint32 scalingMode = sWorld->getIntConfig(CONFIG_RESPAWN_DYNAMICMODE))
            GetMap()->ApplyDynamicModeRespawnScaling(this, m_spawnId, respawnDelay, scalingMode);
 
        // @todo remove the boss respawn time hack in a dynspawn follow-up once we have creature groups in instances
        if (m_respawnCompatibilityMode)
        {
            if (IsDungeonBoss() && !m_respawnDelay)
                m_respawnTime = std::numeric_limits<time_t>::max(); // never respawn in this instance
            else
                m_respawnTime = GameTime::GetGameTime() + respawnDelay + m_corpseDelay;
        }
        else
        {
            if (IsDungeonBoss() && !m_respawnDelay)
                m_respawnTime = std::numeric_limits<time_t>::max(); // never respawn in this instance
            else
                m_respawnTime = GameTime::GetGameTime() + respawnDelay;
        }
 
        SaveRespawnTime();
 
        ReleaseSpellFocus(nullptr, false); // remove spellcast focus
        DoNotReacquireSpellFocusTarget();  // cancel delayed re-target
        SetTarget(ObjectGuid::Empty);      // drop target - dead mobs shouldn't ever target things
 
        ReplaceAllNpcFlags(UNIT_NPC_FLAG_NONE);
 
        SetMountDisplayId(0); // if creature is mounted on a virtual mount, remove it at death
 
        setActive(false);
 
        SetNoSearchAssistance(false);
 
        //Dismiss group if is leader
        if (m_formation && m_formation->GetLeader() == this)
            m_formation->FormationReset(true);
 
        bool needsFalling = (IsFlying() || IsHovering()) && !IsUnderWater();
        SetHover(false);
        SetDisableGravity(false);
 
        if (needsFalling)
            GetMotionMaster()->MoveFall();
 
        Unit::setDeathState(CORPSE);
    }
    else if (s == JUST_RESPAWNED)
    {
        if (IsPet())
            SetFullHealth();
        else
            SetSpawnHealth();
 
        SetLootRecipient(nullptr);
        ResetPlayerDamageReq();
 
        SetCannotReachTarget(false);
        UpdateMovementFlags();
 
        ClearUnitState(UNIT_STATE_ALL_ERASABLE);
 
        if (!IsPet())
        {
            CreatureData const* creatureData = GetCreatureData();
            CreatureTemplate const* cinfo = GetCreatureTemplate();
 
            uint32 npcflag, unit_flags, dynamicflags;
            ObjectMgr::ChooseCreatureFlags(cinfo, &npcflag, &unit_flags, &dynamicflags, creatureData);
 
            ReplaceAllNpcFlags(NPCFlags(npcflag));
            ReplaceAllUnitFlags(UnitFlags(unit_flags));
            ReplaceAllDynamicFlags(dynamicflags);
 
            SetMeleeDamageSchool(SpellSchools(cinfo->dmgschool));
 
            if (creatureData && GetPhaseMask() != creatureData->phaseMask)
                SetPhaseMask(creatureData->phaseMask, false);
        }
 
        Motion_Initialize();
        Unit::setDeathState(ALIVE);
 
        if (!IsPet())
            LoadCreaturesAddon();
    }
}
 
void Creature::Respawn(bool force)
{
    if (force)
    {
        if (IsAlive())
            setDeathState(JUST_DIED);
        else if (getDeathState() != CORPSE)
            setDeathState(CORPSE);
    }
 
    if (m_respawnCompatibilityMode)
    {
        DestroyForNearbyPlayers();
        RemoveCorpse(false, false);
 
        if (getDeathState() == DEAD)
        {
            TC_LOG_DEBUG("entities.unit", "Respawning creature {} ({})", GetName(), GetGUID().ToString());
            m_respawnTime = 0;
            ResetPickPocketRefillTimer();
            loot.clear();
 
            if (m_originalEntry != GetEntry())
                UpdateEntry(m_originalEntry);
 
            SelectLevel();
 
            setDeathState(JUST_RESPAWNED);
 
            uint32 displayID = GetNativeDisplayId();
            if (sObjectMgr->GetCreatureModelRandomGender(&displayID))
            {
                SetDisplayId(displayID);
                SetNativeDisplayId(displayID);
            }
 
            GetMotionMaster()->InitializeDefault();
 
            // Re-initialize reactstate that could be altered by movementgenerators
            InitializeReactState();
 
            if (UnitAI* ai = AI()) // reset the AI to be sure no dirty or uninitialized values will be used till next tick
                ai->Reset();
 
            m_triggerJustAppeared = true;
 
            uint32 poolid = GetSpawnId() ? sPoolMgr->IsPartOfAPool<Creature>(GetSpawnId()) : 0;
            if (poolid)
                sPoolMgr->UpdatePool<Creature>(poolid, GetSpawnId());
        }
        UpdateObjectVisibility();
    }
    else
    {
        if (m_spawnId)
            GetMap()->Respawn(SPAWN_TYPE_CREATURE, m_spawnId);
    }
 
    TC_LOG_DEBUG("entities.unit", "Respawning creature {} ({})",
        GetName(), GetGUID().ToString());
 
}
 
void Creature::ForcedDespawn(uint32 timeMSToDespawn, Seconds forceRespawnTimer)
{
    if (timeMSToDespawn)
    {
        m_Events.AddEvent(new ForcedDespawnDelayEvent(*this, forceRespawnTimer), m_Events.CalculateTime(Milliseconds(timeMSToDespawn)));
        return;
    }
 
    if (m_respawnCompatibilityMode)
    {
        uint32 corpseDelay = GetCorpseDelay();
        uint32 respawnDelay = GetRespawnDelay();
 
        // do it before killing creature
        DestroyForNearbyPlayers();
 
        bool overrideRespawnTime = false;
        if (IsAlive())
        {
            if (forceRespawnTimer > Seconds::zero())
            {
                SetCorpseDelay(0);
                SetRespawnDelay(forceRespawnTimer.count());
                overrideRespawnTime = true;
            }
 
            setDeathState(JUST_DIED);
        }
 
        // Skip corpse decay time
        RemoveCorpse(!overrideRespawnTime, false);
 
        SetCorpseDelay(corpseDelay);
        SetRespawnDelay(respawnDelay);
    }
    else
    {
        if (forceRespawnTimer > Seconds::zero())
            SaveRespawnTime(forceRespawnTimer.count());
        else
        {
            uint32 respawnDelay = m_respawnDelay;
            if (uint32 scalingMode = sWorld->getIntConfig(CONFIG_RESPAWN_DYNAMICMODE))
                GetMap()->ApplyDynamicModeRespawnScaling(this, m_spawnId, respawnDelay, scalingMode);
            m_respawnTime = GameTime::GetGameTime() + respawnDelay;
            SaveRespawnTime();
        }
 
        AddObjectToRemoveList();
    }
}
 
void Creature::DespawnOrUnsummon(Milliseconds timeToDespawn /*= 0s*/, Seconds forceRespawnTimer /*= 0s*/)
{
    if (TempSummon* summon = ToTempSummon())
        summon->UnSummon(timeToDespawn.count());
    else
        ForcedDespawn(timeToDespawn.count(), forceRespawnTimer);
}
 
void Creature::LoadTemplateImmunities()
{
    // uint32 max used for "spell id", the immunity system will not perform SpellInfo checks against invalid spells
    // used so we know which immunities were loaded from template
    static uint32 const placeholderSpellId = std::numeric_limits<uint32>::max();
 
    // unapply template immunities (in case we're updating entry)
    for (uint32 i = MECHANIC_NONE + 1; i < MAX_MECHANIC; ++i)
        ApplySpellImmune(placeholderSpellId, IMMUNITY_MECHANIC, i, false);
 
    for (uint32 i = SPELL_SCHOOL_NORMAL; i < MAX_SPELL_SCHOOL; ++i)
        ApplySpellImmune(placeholderSpellId, IMMUNITY_SCHOOL, 1 << i, false);
 
    // don't inherit immunities for hunter pets
    if (GetOwnerGUID().IsPlayer() && IsHunterPet())
        return;
 
    if (uint32 mask = GetCreatureTemplate()->MechanicImmuneMask)
    {
        for (uint32 i = MECHANIC_NONE + 1; i < MAX_MECHANIC; ++i)
        {
            if (mask & (1 << (i - 1)))
                ApplySpellImmune(placeholderSpellId, IMMUNITY_MECHANIC, i, true);
        }
    }
 
    if (uint32 mask = GetCreatureTemplate()->SpellSchoolImmuneMask)
    {
        for (uint8 i = SPELL_SCHOOL_NORMAL; i < MAX_SPELL_SCHOOL; ++i)
        {
            if (mask & (1 << i))
                ApplySpellImmune(placeholderSpellId, IMMUNITY_SCHOOL, 1 << i, true);
        }
    }
}
 
bool Creature::IsImmunedToSpell(SpellInfo const* spellInfo, WorldObject const* caster, bool requireImmunityPurgesEffectAttribute /*= false*/) const
{
    if (!spellInfo)
        return false;
 
    bool immunedToAllEffects = true;
    for (SpellEffectInfo const& spellEffectInfo : spellInfo->GetEffects())
    {
        if (spellEffectInfo.IsEffect() && !IsImmunedToSpellEffect(spellInfo, spellEffectInfo, caster, requireImmunityPurgesEffectAttribute))
        {
            immunedToAllEffects = false;
            break;
        }
    }
 
    if (immunedToAllEffects)
        return true;
 
    return Unit::IsImmunedToSpell(spellInfo, caster, requireImmunityPurgesEffectAttribute);
}
 
bool Creature::IsImmunedToSpellEffect(SpellInfo const* spellInfo, SpellEffectInfo const& spellEffectInfo, WorldObject const* caster,
    bool requireImmunityPurgesEffectAttribute /*= false*/) const
{
    if (GetCreatureTemplate()->type == CREATURE_TYPE_MECHANICAL && spellEffectInfo.IsEffect(SPELL_EFFECT_HEAL))
        return true;
 
    return Unit::IsImmunedToSpellEffect(spellInfo, spellEffectInfo, caster, requireImmunityPurgesEffectAttribute);
}
 
bool Creature::isElite() const
{
    if (IsPet())
        return false;
 
    uint32 rank = GetCreatureTemplate()->rank;
    return rank != CREATURE_ELITE_NORMAL && rank != CREATURE_ELITE_RARE;
}
 
bool Creature::isWorldBoss() const
{
    if (IsPet())
        return false;
 
    return (GetCreatureTemplate()->type_flags & CREATURE_TYPE_FLAG_BOSS_MOB) != 0;
}
 
// select nearest hostile unit within the given distance (regardless of threat list).
Unit* Creature::SelectNearestTarget(float dist, bool playerOnly /* = false */) const
{
    if (dist == 0.0f)
        dist = MAX_VISIBILITY_DISTANCE;
 
    Unit* target = nullptr;
    Trinity::NearestHostileUnitCheck u_check(this, dist, playerOnly);
    Trinity::UnitLastSearcher<Trinity::NearestHostileUnitCheck> searcher(this, target, u_check);
    Cell::VisitAllObjects(this, searcher, dist);
    return target;
}
 
// select nearest hostile unit within the given attack distance (i.e. distance is ignored if > than ATTACK_DISTANCE), regardless of threat list.
Unit* Creature::SelectNearestTargetInAttackDistance(float dist) const
{
    if (dist > MAX_VISIBILITY_DISTANCE)
    {
        TC_LOG_ERROR("entities.unit", "Creature {} SelectNearestTargetInAttackDistance called with dist > MAX_VISIBILITY_DISTANCE. Distance set to ATTACK_DISTANCE.", GetGUID().ToString());
        dist = ATTACK_DISTANCE;
    }
 
    Unit* target = nullptr;
    Trinity::NearestHostileUnitInAttackDistanceCheck u_check(this, dist);
    Trinity::UnitLastSearcher<Trinity::NearestHostileUnitInAttackDistanceCheck> searcher(this, target, u_check);
    Cell::VisitAllObjects(this, searcher, std::max(dist, ATTACK_DISTANCE));
    return target;
}
 
void Creature::SendAIReaction(AiReaction reactionType)
{
    WorldPackets::Combat::AIReaction packet;
 
    packet.UnitGUID = GetGUID();
    packet.Reaction = reactionType;
 
    SendMessageToSet(packet.Write(), true);
 
    TC_LOG_DEBUG("network", "WORLD: Sent SMSG_AI_REACTION, type {}.", reactionType);
}
 
void Creature::CallAssistance()
{
    if (!m_AlreadyCallAssistance && GetVictim() && !IsPet() && !IsCharmed())
    {
        SetNoCallAssistance(true);
 
        float radius = sWorld->getFloatConfig(CONFIG_CREATURE_FAMILY_ASSISTANCE_RADIUS);
 
        if (radius > 0)
        {
            std::list<Creature*> assistList;
            Trinity::AnyAssistCreatureInRangeCheck u_check(this, GetVictim(), radius);
            Trinity::CreatureListSearcher<Trinity::AnyAssistCreatureInRangeCheck> searcher(this, assistList, u_check);
            Cell::VisitGridObjects(this, searcher, radius);
 
            if (!assistList.empty())
            {
                AssistDelayEvent* e = new AssistDelayEvent(EnsureVictim()->GetGUID(), *this);
                while (!assistList.empty())
                {
                    // Pushing guids because in delay can happen some creature gets despawned => invalid pointer
                    e->AddAssistant((*assistList.begin())->GetGUID());
                    assistList.pop_front();
                }
                m_Events.AddEvent(e, m_Events.CalculateTime(Milliseconds(sWorld->getIntConfig(CONFIG_CREATURE_FAMILY_ASSISTANCE_DELAY))));
            }
        }
    }
}
 
void Creature::CallForHelp(float radius)
{
    if (radius <= 0.0f || !IsEngaged() || !IsAlive() || IsPet() || IsCharmed())
        return;
 
    Unit* target = GetThreatManager().GetCurrentVictim();
    if (!target)
        target = GetThreatManager().GetAnyTarget();
    if (!target)
        target = GetCombatManager().GetAnyTarget();
 
    if (!target)
    {
        TC_LOG_ERROR("entities.unit", "Creature {} ({}) trying to call for help without being in combat.", GetEntry(), GetName());
        return;
    }
 
    Trinity::CallOfHelpCreatureInRangeDo u_do(this, target, radius);
    Trinity::CreatureWorker<Trinity::CallOfHelpCreatureInRangeDo> worker(this, u_do);
    Cell::VisitGridObjects(this, worker, radius);
}
 
bool Creature::CanAssistTo(Unit const* u, Unit const* enemy, bool checkfaction /*= true*/) const
{
    // is it true?
    if (!HasReactState(REACT_AGGRESSIVE))
        return false;
 
    // we don't need help from zombies :)
    if (!IsAlive())
        return false;
 
    // we cannot assist in evade mode
    if (IsInEvadeMode())
        return false;
 
    // or if enemy is in evade mode
    if (enemy->GetTypeId() == TYPEID_UNIT && enemy->ToCreature()->IsInEvadeMode())
        return false;
 
    // we don't need help from non-combatant ;)
    if (IsCivilian())
        return false;
 
    if (HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE | UNIT_FLAG_UNINTERACTIBLE) || IsImmuneToNPC())
        return false;
 
    // skip fighting creature
    if (IsEngaged())
        return false;
 
    // only free creature
    if (!GetCharmerOrOwnerGUID().IsEmpty())
        return false;
 
    // only from same creature faction
    if (checkfaction)
    {
        if (GetFaction() != u->GetFaction())
            return false;
    }
    else
    {
        if (!IsFriendlyTo(u))
            return false;
    }
 
    // skip non hostile to caster enemy creatures
    if (!IsHostileTo(enemy))
        return false;
 
    return true;
}
 
// use this function to avoid having hostile creatures attack
// friendlies and other mobs they shouldn't attack
bool Creature::_IsTargetAcceptable(Unit const* target) const
{
    ASSERT(target);
 
    // if the target cannot be attacked, the target is not acceptable
    if (IsFriendlyTo(target)
        || !target->isTargetableForAttack(false)
        || (m_vehicle && (IsOnVehicle(target) || m_vehicle->GetBase()->IsOnVehicle(target))))
        return false;
 
    if (target->HasUnitState(UNIT_STATE_DIED))
    {
        // some creatures can detect fake death
        if (CanIgnoreFeignDeath() && target->HasUnitFlag2(UNIT_FLAG2_FEIGN_DEATH))
            return true;
        else
            return false;
    }
 
    // if I'm already fighting target, or I'm hostile towards the target, the target is acceptable
    if (IsEngagedBy(target) || IsHostileTo(target))
        return true;
 
    // if the target's victim is not friendly, or the target is friendly, the target is not acceptable
    return false;
}
 
void Creature::SaveRespawnTime(uint32 forceDelay)
{
    if (IsSummon() || !m_spawnId || (m_creatureData && !m_creatureData->dbData))
        return;
 
    if (m_respawnCompatibilityMode)
    {
        RespawnInfo ri;
        ri.type = SPAWN_TYPE_CREATURE;
        ri.spawnId = m_spawnId;
        ri.respawnTime = m_respawnTime;
        GetMap()->SaveRespawnInfoDB(ri);
        return;
    }
 
    time_t thisRespawnTime = forceDelay ? GameTime::GetGameTime() + forceDelay : m_respawnTime;
    GetMap()->SaveRespawnTime(SPAWN_TYPE_CREATURE, m_spawnId, GetEntry(), thisRespawnTime, Trinity::ComputeGridCoord(GetHomePosition().GetPositionX(), GetHomePosition().GetPositionY()).GetId());
}
 
// this should not be called by petAI or
bool Creature::CanCreatureAttack(Unit const* victim, bool /*force*/) const
{
    if (!victim->IsInMap(this))
        return false;
 
    if (!IsValidAttackTarget(victim))
        return false;
 
    if (!victim->isInAccessiblePlaceFor(this))
        return false;
 
    if (CreatureAI* ai = AI())
        if (!ai->CanAIAttack(victim))
            return false;
 
    // we cannot attack in evade mode
    if (IsInEvadeMode())
        return false;
 
    // or if enemy is in evade mode
    if (victim->GetTypeId() == TYPEID_UNIT && victim->ToCreature()->IsInEvadeMode())
        return false;
 
    if (!GetCharmerOrOwnerGUID().IsPlayer())
    {
        if (GetMap()->IsDungeon())
            return true;
 
        // don't check distance to home position if recently damaged, this should include taunt auras
        if (!isWorldBoss() && (GetLastDamagedTime() > GameTime::GetGameTime() || HasAuraType(SPELL_AURA_MOD_TAUNT)))
            return true;
    }
 
    // Map visibility range, but no more than 2*cell size
    float dist = std::min<float>(GetMap()->GetVisibilityRange(), SIZE_OF_GRID_CELL*2);
 
    if (Unit* unit = GetCharmerOrOwner())
        return victim->IsWithinDist(unit, dist);
    else
    {
        // include sizes for huge npcs
        dist += GetCombatReach() + victim->GetCombatReach();
 
        // to prevent creatures in air ignore attacks because distance is already too high...
        if (GetMovementTemplate().IsFlightAllowed())
            return victim->IsInDist2d(&m_homePosition, dist);
        else
            return victim->IsInDist(&m_homePosition, dist);
    }
}
 
CreatureAddon const* Creature::GetCreatureAddon() const
{
    if (m_spawnId)
    {
        if (CreatureAddon const* addon = sObjectMgr->GetCreatureAddon(m_spawnId))
            return addon;
    }
 
    // dependent from difficulty mode entry
    return sObjectMgr->GetCreatureTemplateAddon(GetCreatureTemplate()->Entry);
}
 
//creature_addon table
bool Creature::LoadCreaturesAddon()
{
    CreatureAddon const* creatureAddon = GetCreatureAddon();
    if (!creatureAddon)
        return false;
 
    if (creatureAddon->mount != 0)
        Mount(creatureAddon->mount);
 
    // UNIT_FIELD_BYTES_1 values
    SetStandState(UnitStandStateType(creatureAddon->standState));
    SetAnimTier(AnimTier(creatureAddon->animTier));
    ReplaceAllVisFlags(UnitVisFlags(creatureAddon->visFlags));
 
    // UNIT_FIELD_BYTES_2 values
    SetSheath(SheathState(creatureAddon->sheathState));
    ReplaceAllPvpFlags(UnitPVPStateFlags(creatureAddon->pvpFlags));
 
    // These fields must only be handled by core internals and must not be modified via scripts/DB data
    ReplaceAllPetFlags(UNIT_PET_FLAG_NONE);
    SetShapeshiftForm(FORM_NONE);
 
    if (creatureAddon->emote != 0)
        SetEmoteState(Emote(creatureAddon->emote));
 
    // Check if visibility distance different
    if (creatureAddon->visibilityDistanceType != VisibilityDistanceType::Normal)
        SetVisibilityDistanceOverride(creatureAddon->visibilityDistanceType);
 
    // Load Path
    if (creatureAddon->path_id != 0)
        _waypointPathId = creatureAddon->path_id;
 
    if (!creatureAddon->auras.empty())
    {
        for (std::vector<uint32>::const_iterator itr = creatureAddon->auras.begin(); itr != creatureAddon->auras.end(); ++itr)
        {
            SpellInfo const* AdditionalSpellInfo = sSpellMgr->GetSpellInfo(*itr);
            if (!AdditionalSpellInfo)
            {
                TC_LOG_ERROR("sql.sql", "Creature {} has wrong spell {} defined in `auras` field.", GetGUID().ToString(), *itr);
                continue;
            }
 
            // skip already applied aura
            if (HasAura(*itr))
                continue;
 
            AddAura(*itr, this);
            TC_LOG_DEBUG("entities.unit", "Spell: {} added to creature {}", *itr, GetGUID().ToString());
        }
    }
 
    return true;
}
 
void Creature::SendZoneUnderAttackMessage(Player* attacker)
{
    uint32 enemy_team = attacker->GetTeam();
 
    WorldPacket data(SMSG_ZONE_UNDER_ATTACK, 4);
    data << (uint32)GetAreaId();
    sWorld->SendGlobalMessage(&data, nullptr, (enemy_team == ALLIANCE ? HORDE : ALLIANCE));
}
 
uint32 Creature::GetShieldBlockValue() const                  //dunno mob block value
{
    return (GetLevel()/2 + uint32(GetStat(STAT_STRENGTH)/20));
}
 
bool Creature::HasSpell(uint32 spellID) const
{
    return std::find(std::begin(m_spells), std::end(m_spells), spellID) != std::end(m_spells);
}
 
time_t Creature::GetRespawnTimeEx() const
{
    time_t now = GameTime::GetGameTime();
    if (m_respawnTime > now)
        return m_respawnTime;
    else
        return now;
}
 
void Creature::SetRespawnTime(uint32 respawn)
{
    m_respawnTime = respawn ? GameTime::GetGameTime() + respawn : 0;
}
 
void Creature::GetRespawnPosition(float &x, float &y, float &z, float* ori, float* dist) const
{
    if (m_creatureData)
    {
        if (ori)
            m_creatureData->spawnPoint.GetPosition(x, y, z, *ori);
        else
            m_creatureData->spawnPoint.GetPosition(x, y, z);
 
        if (dist)
            *dist = m_creatureData->wander_distance;
    }
    else
    {
        Position const& homePos = GetHomePosition();
        if (ori)
            homePos.GetPosition(x, y, z, *ori);
        else
            homePos.GetPosition(x, y, z);
        if (dist)
            *dist = 0;
    }
}
 
void Creature::InitializeMovementFlags()
{
    // It does the same, for now
    UpdateMovementFlags();
}
 
void Creature::UpdateMovementFlags()
{
    // Do not update movement flags if creature is controlled by a player (charm/vehicle)
    if (IsMovedByClient())
        return;
 
    // Creatures with CREATURE_FLAG_EXTRA_NO_MOVE_FLAGS_UPDATE should control MovementFlags in your own scripts
    if (GetCreatureTemplate()->flags_extra & CREATURE_FLAG_EXTRA_NO_MOVE_FLAGS_UPDATE)
        return;
 
    // Set the movement flags if the creature is in that mode. (Only fly if actually in air, only swim if in water, etc)
    float ground = GetFloorZ();
 
    bool canHover = CanHover();
    bool isInAir = (G3D::fuzzyGt(GetPositionZ(), ground + (canHover ? GetFloatValue(UNIT_FIELD_HOVERHEIGHT) : 0.0f) + GROUND_HEIGHT_TOLERANCE) || G3D::fuzzyLt(GetPositionZ(), ground - GROUND_HEIGHT_TOLERANCE)); // Can be underground too, prevent the falling
 
    if (GetMovementTemplate().IsFlightAllowed() && isInAir && !IsFalling())
    {
        if (GetMovementTemplate().Flight == CreatureFlightMovementType::CanFly)
            SetCanFly(true);
        else
            SetDisableGravity(true);
 
        if (!HasAuraType(SPELL_AURA_HOVER))
            SetHover(false);
    }
    else
    {
        SetCanFly(false);
        SetDisableGravity(false);
        if (IsAlive() && (CanHover() || HasAuraType(SPELL_AURA_HOVER)))
            SetHover(true);
    }
 
    if (!isInAir)
        SetFall(false);
 
    SetSwim(CanSwim() && IsInWater());
}
 
CreatureMovementData const& Creature::GetMovementTemplate() const
{
    if (CreatureMovementData const* movementOverride = sObjectMgr->GetCreatureMovementOverride(m_spawnId))
        return *movementOverride;
 
    return GetCreatureTemplate()->Movement;
}
 
bool Creature::CanSwim() const
{
    if (Unit::CanSwim())
        return true;
 
    if (IsPet())
        return true;
 
    return false;
}
 
bool Creature::CanEnterWater() const
{
    if (CanSwim())
        return true;
 
    return GetMovementTemplate().IsSwimAllowed();
}
 
void Creature::RefreshCanSwimFlag(bool recheck)
{
    if (!_isMissingCanSwimFlagOutOfCombat || recheck)
        _isMissingCanSwimFlagOutOfCombat = !HasUnitFlag(UNIT_FLAG_CAN_SWIM);
 
    // Check if the creature has UNIT_FLAG_CAN_SWIM and add it if it's missing
    // Creatures must be able to chase a target in water if they can enter water
    if (_isMissingCanSwimFlagOutOfCombat && CanEnterWater())
        SetUnitFlag(UNIT_FLAG_CAN_SWIM);
}
 
void Creature::AllLootRemovedFromCorpse()
{
    if (loot.loot_type != LOOT_SKINNING && !IsPet() && GetCreatureTemplate()->SkinLootId && hasLootRecipient())
        if (LootTemplates_Skinning.HaveLootFor(GetCreatureTemplate()->SkinLootId))
            SetUnitFlag(UNIT_FLAG_SKINNABLE);
 
    time_t now = GameTime::GetGameTime();
    // Do not reset corpse remove time if corpse is already removed
    if (m_corpseRemoveTime <= now)
        return;
 
    // Scripts can choose to ignore RATE_CORPSE_DECAY_LOOTED by calling SetCorpseDelay(timer, true)
    float decayRate = m_ignoreCorpseDecayRatio ? 1.f : sWorld->getRate(RATE_CORPSE_DECAY_LOOTED);
 
    // corpse skinnable, but without skinning flag, and then skinned, corpse will despawn next update
    if (loot.loot_type == LOOT_SKINNING)
        m_corpseRemoveTime = now;
    else
        m_corpseRemoveTime = now + uint32(m_corpseDelay * decayRate);
 
    m_respawnTime = std::max<time_t>(m_corpseRemoveTime + m_respawnDelay, m_respawnTime);
}
 
uint8 Creature::GetLevelForTarget(WorldObject const* target) const
{
    if (!isWorldBoss() || !target->ToUnit())
        return Unit::GetLevelForTarget(target);
 
    uint16 level = target->ToUnit()->GetLevel() + sWorld->getIntConfig(CONFIG_WORLD_BOSS_LEVEL_DIFF);
    if (level < 1)
        return 1;
    if (level > 255)
        return 255;
    return uint8(level);
}
 
std::string const& Creature::GetAIName() const
{
    return sObjectMgr->GetCreatureTemplate(GetEntry())->AIName;
}
 
std::string Creature::GetScriptName() const
{
    return sObjectMgr->GetScriptName(GetScriptId());
}
 
uint32 Creature::GetScriptId() const
{
    if (CreatureData const* creatureData = GetCreatureData())
        if (uint32 scriptId = creatureData->scriptId)
            return scriptId;
 
    return ASSERT_NOTNULL(sObjectMgr->GetCreatureTemplate(GetEntry()))->ScriptID;
}
 
void Creature::InheritStringIds(Creature const* parent)
{
    // copy references to stringIds from template and spawn
    m_stringIds = parent->m_stringIds;
 
    // then copy script stringId, not just its reference
    SetScriptStringId(std::string(parent->GetStringId(StringIdType::Script)));
}
 
bool Creature::HasStringId(std::string_view id) const
{
    return std::ranges::any_of(m_stringIds, [id](std::string const* stringId) { return stringId && *stringId == id; });
}
 
void Creature::SetScriptStringId(std::string id)
{
    if (!id.empty())
    {
        m_scriptStringId.emplace(std::move(id));
        m_stringIds[AsUnderlyingType(StringIdType::Script)] = &*m_scriptStringId;
    }
    else
    {
        m_scriptStringId.reset();
        m_stringIds[AsUnderlyingType(StringIdType::Script)] = nullptr;
    }
}
 
VendorItemData const* Creature::GetVendorItems() const
{
    return sObjectMgr->GetNpcVendorItemList(GetEntry());
}
 
uint32 Creature::GetVendorItemCurrentCount(VendorItem const* vItem)
{
    if (!vItem->maxcount)
        return vItem->maxcount;
 
    VendorItemCounts::iterator itr = m_vendorItemCounts.begin();
    for (; itr != m_vendorItemCounts.end(); ++itr)
        if (itr->itemId == vItem->item)
            break;
 
    if (itr == m_vendorItemCounts.end())
        return vItem->maxcount;
 
    VendorItemCount* vCount = &*itr;
 
    time_t ptime = GameTime::GetGameTime();
 
    if (time_t(vCount->lastIncrementTime + vItem->incrtime) <= ptime)
        if (ItemTemplate const* pProto = sObjectMgr->GetItemTemplate(vItem->item))
        {
            uint32 diff = uint32((ptime - vCount->lastIncrementTime)/vItem->incrtime);
            if ((vCount->count + diff * pProto->GetBuyCount()) >= vItem->maxcount)
            {
                m_vendorItemCounts.erase(itr);
                return vItem->maxcount;
            }
 
            vCount->count += diff * pProto->GetBuyCount();
            vCount->lastIncrementTime = ptime;
        }
 
    return vCount->count;
}
 
uint32 Creature::UpdateVendorItemCurrentCount(VendorItem const* vItem, uint32 used_count)
{
    if (!vItem->maxcount)
        return 0;
 
    VendorItemCounts::iterator itr = m_vendorItemCounts.begin();
    for (; itr != m_vendorItemCounts.end(); ++itr)
        if (itr->itemId == vItem->item)
            break;
 
    if (itr == m_vendorItemCounts.end())
    {
        uint32 new_count = vItem->maxcount > used_count ? vItem->maxcount-used_count : 0;
        m_vendorItemCounts.push_back(VendorItemCount(vItem->item, new_count));
        return new_count;
    }
 
    VendorItemCount* vCount = &*itr;
 
    time_t ptime = GameTime::GetGameTime();
 
    if (time_t(vCount->lastIncrementTime + vItem->incrtime) <= ptime)
        if (ItemTemplate const* pProto = sObjectMgr->GetItemTemplate(vItem->item))
        {
            uint32 diff = uint32((ptime - vCount->lastIncrementTime)/vItem->incrtime);
            if ((vCount->count + diff * pProto->GetBuyCount()) < vItem->maxcount)
                vCount->count += diff * pProto->GetBuyCount();
            else
                vCount->count = vItem->maxcount;
        }
 
    vCount->count = vCount->count > used_count ? vCount->count-used_count : 0;
    vCount->lastIncrementTime = ptime;
    return vCount->count;
}
 
// overwrite WorldObject function for proper name localization
std::string const & Creature::GetNameForLocaleIdx(LocaleConstant loc_idx) const
{
    if (loc_idx != DEFAULT_LOCALE)
    {
        uint8 uloc_idx = uint8(loc_idx);
        CreatureLocale const* cl = sObjectMgr->GetCreatureLocale(GetEntry());
        if (cl)
        {
            if (cl->Name.size() > uloc_idx && !cl->Name[uloc_idx].empty())
                return cl->Name[uloc_idx];
        }
    }
 
    return GetName();
}
 
uint32 Creature::GetPetAutoSpellOnPos(uint8 pos) const
{
    if (pos >= MAX_SPELL_CHARM || !m_charmInfo || m_charmInfo->GetCharmSpell(pos)->GetType() != ACT_ENABLED)
        return 0;
    else
        return m_charmInfo->GetCharmSpell(pos)->GetAction();
}
 
float Creature::GetPetChaseDistance() const
{
    float range = 0.f;
 
    for (uint8 i = 0; i < GetPetAutoSpellSize(); ++i)
    {
        uint32 spellID = GetPetAutoSpellOnPos(i);
        if (!spellID)
            continue;
 
        if (SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellID))
        {
            if (spellInfo->GetRecoveryTime() == 0 && spellInfo->RangeEntry->ID != 1 /*Self*/ && spellInfo->RangeEntry->ID != 2 /*Combat Range*/ && spellInfo->GetMaxRange() > range)
                range = spellInfo->GetMaxRange();
        }
    }
 
    return range;
}
 
void Creature::SetCannotReachTarget(bool cannotReach)
{
    if (cannotReach == m_cannotReachTarget)
        return;
    m_cannotReachTarget = cannotReach;
    m_cannotReachTimer = 0;
 
    if (cannotReach)
        TC_LOG_DEBUG("entities.unit.chase", "Creature::SetCannotReachTarget() called with true. Details: {}", GetDebugInfo());
}
 
float Creature::GetAggroRange(Unit const* target) const
{
    // Determines the aggro range for creatures (usually pets), used mainly for aggressive pet target selection.
    // Based on data from wowwiki due to lack of 3.3.5a data
 
    if (target && IsPet())
    {
        uint32 targetLevel = 0;
 
        if (target->GetTypeId() == TYPEID_PLAYER)
            targetLevel = target->GetLevelForTarget(this);
        else if (target->GetTypeId() == TYPEID_UNIT)
            targetLevel = target->ToCreature()->GetLevelForTarget(this);
 
        uint32 myLevel = GetLevelForTarget(target);
        int32 levelDiff = int32(targetLevel) - int32(myLevel);
 
        // The maximum Aggro Radius is capped at 45 yards (25 level difference)
        if (levelDiff < -25)
            levelDiff = -25;
 
        // The base aggro radius for mob of same level
        float aggroRadius = 20;
 
        // Aggro Radius varies with level difference at a rate of roughly 1 yard/level
        aggroRadius -= (float)levelDiff;
 
        // detect range auras
        aggroRadius += GetTotalAuraModifier(SPELL_AURA_MOD_DETECT_RANGE);
 
        // detected range auras
        aggroRadius += target->GetTotalAuraModifier(SPELL_AURA_MOD_DETECTED_RANGE);
 
        // Just in case, we don't want pets running all over the map
        if (aggroRadius > MAX_AGGRO_RADIUS)
            aggroRadius = MAX_AGGRO_RADIUS;
 
        // Minimum Aggro Radius for a mob seems to be combat range (5 yards)
        //  hunter pets seem to ignore minimum aggro radius so we'll default it a little higher
        if (aggroRadius < 10)
            aggroRadius = 10;
 
        return (aggroRadius);
    }
 
    // Default
    return 0.0f;
}
 
Unit* Creature::SelectNearestHostileUnitInAggroRange(bool useLOS, bool ignoreCivilians) const
{
    // Selects nearest hostile target within creature's aggro range. Used primarily by
    //  pets set to aggressive. Will not return neutral or friendly targets.
 
    Unit* target = nullptr;
 
    Trinity::NearestHostileUnitInAggroRangeCheck u_check(this, useLOS, ignoreCivilians);
    Trinity::UnitSearcher<Trinity::NearestHostileUnitInAggroRangeCheck> searcher(this, target, u_check);
 
    Cell::VisitGridObjects(this, searcher, MAX_AGGRO_RADIUS);
 
    return target;
}
 
float Creature::GetNativeObjectScale() const
{
    return GetCreatureTemplate()->scale;
}
 
void Creature::SetObjectScale(float scale)
{
    Unit::SetObjectScale(scale);
 
    if (CreatureModelInfo const* minfo = sObjectMgr->GetCreatureModelInfo(GetDisplayId()))
    {
        SetBoundingRadius((IsPet() ? 1.0f : minfo->bounding_radius) * scale);
        SetCombatReach((IsPet() ? DEFAULT_PLAYER_COMBAT_REACH : minfo->combat_reach) * scale);
    }
}
 
void Creature::SetDisplayId(uint32 modelId)
{
    Unit::SetDisplayId(modelId);
 
    if (CreatureModelInfo const* minfo = sObjectMgr->GetCreatureModelInfo(modelId))
    {
        SetBoundingRadius((IsPet() ? 1.0f : minfo->bounding_radius) * GetObjectScale());
        SetCombatReach((IsPet() ? DEFAULT_PLAYER_COMBAT_REACH : minfo->combat_reach) * GetObjectScale());
    }
}
 
void Creature::SetTarget(ObjectGuid const& guid)
{
    if (HasSpellFocus())
        _spellFocusInfo.Target = guid;
    else
        SetGuidValue(UNIT_FIELD_TARGET, guid);
}
 
void Creature::SetSpellFocus(Spell const* focusSpell, WorldObject const* target)
{
    // Pointer validation and checking for a already existing focus
    if (_spellFocusInfo.Spell || !focusSpell)
        return;
 
    // Prevent dead / feign death creatures from setting a focus target
    if (!IsAlive() || HasUnitFlag2(UNIT_FLAG2_FEIGN_DEATH) || HasAuraType(SPELL_AURA_FEIGN_DEATH))
        return;
 
    // Don't allow stunned creatures to set a focus target
    if (HasUnitFlag(UNIT_FLAG_STUNNED))
        return;
 
    // some spells shouldn't track targets
    if (focusSpell->IsFocusDisabled())
        return;
 
    SpellInfo const* spellInfo = focusSpell->GetSpellInfo();
 
    // don't use spell focus for vehicle spells
    if (spellInfo->HasAura(SPELL_AURA_CONTROL_VEHICLE))
        return;
 
    // instant non-channeled casts and non-target spells don't need facing updates
    if (!target && (!focusSpell->GetCastTime() && !spellInfo->IsChanneled()))
        return;
 
    // store pre-cast values for target and orientation (used to later restore)
    if (!_spellFocusInfo.Delay)
    { // only overwrite these fields if we aren't transitioning from one spell focus to another
        _spellFocusInfo.Target = GetGuidValue(UNIT_FIELD_TARGET);
        _spellFocusInfo.Orientation = GetOrientation();
    }
    else // don't automatically reacquire target for the previous spellcast
        _spellFocusInfo.Delay = 0;
 
    _spellFocusInfo.Spell = focusSpell;
 
    bool const noTurnDuringCast = spellInfo->HasAttribute(SPELL_ATTR5_DONT_TURN_DURING_CAST);
    bool const turnDisabled = HasUnitFlag2(UNIT_FLAG2_CANNOT_TURN);
    // set target, then force send update packet to players if it changed to provide appropriate facing
    ObjectGuid newTarget = (target && !noTurnDuringCast && !turnDisabled) ? target->GetGUID() : ObjectGuid::Empty;
    if (GetGuidValue(UNIT_FIELD_TARGET) != newTarget)
        SetGuidValue(UNIT_FIELD_TARGET, newTarget);
 
    // If we are not allowed to turn during cast but have a focus target, face the target
    if (!turnDisabled && noTurnDuringCast && target)
        SetFacingToObject(target, false);
 
    if (noTurnDuringCast)
        AddUnitState(UNIT_STATE_FOCUSING);
}
 
bool Creature::HasSpellFocus(Spell const* focusSpell) const
{
    if (isDead()) // dead creatures cannot focus
    {
        if (_spellFocusInfo.Spell || _spellFocusInfo.Delay)
        {
            TC_LOG_WARN("entities.unit", "Creature '{}' (entry {}) has spell focus (spell id {}, delay {}ms) despite being dead.",
                        GetName(), GetEntry(), _spellFocusInfo.Spell ? _spellFocusInfo.Spell->GetSpellInfo()->Id : 0, _spellFocusInfo.Delay);
        }
        return false;
    }
 
    if (focusSpell)
        return (focusSpell == _spellFocusInfo.Spell);
    else
        return (_spellFocusInfo.Spell || _spellFocusInfo.Delay);
}
 
void Creature::ReleaseSpellFocus(Spell const* focusSpell, bool withDelay)
{
    if (!_spellFocusInfo.Spell)
        return;
 
    // focused to something else
    if (focusSpell && focusSpell != _spellFocusInfo.Spell)
        return;
 
    if (_spellFocusInfo.Spell->GetSpellInfo()->HasAttribute(SPELL_ATTR5_DONT_TURN_DURING_CAST))
        ClearUnitState(UNIT_STATE_FOCUSING);
 
    if (IsPet()) // player pets do not use delay system
    {
        if (!HasUnitFlag2(UNIT_FLAG2_CANNOT_TURN))
            ReacquireSpellFocusTarget();
    }
    else // don't allow re-target right away to prevent visual bugs
        _spellFocusInfo.Delay = withDelay ? 1000 : 1;
 
    _spellFocusInfo.Spell = nullptr;
}
 
void Creature::ReacquireSpellFocusTarget()
{
    if (!HasSpellFocus())
    {
        TC_LOG_ERROR("entities.unit", "Creature::ReacquireSpellFocusTarget() being called with HasSpellFocus() returning false. {}", GetDebugInfo());
        return;
    }
 
    SetGuidValue(UNIT_FIELD_TARGET, _spellFocusInfo.Target);
 
    if (!HasUnitFlag2(UNIT_FLAG2_CANNOT_TURN))
    {
        if (!_spellFocusInfo.Target.IsEmpty())
        {
            if (WorldObject const* objTarget = ObjectAccessor::GetWorldObject(*this, _spellFocusInfo.Target))
                SetFacingToObject(objTarget, false);
        }
        else
            SetFacingTo(_spellFocusInfo.Orientation, false);
    }
    _spellFocusInfo.Delay = 0;
}
 
void Creature::DoNotReacquireSpellFocusTarget()
{
    _spellFocusInfo.Delay = 0;
    _spellFocusInfo.Spell = nullptr;
}
 
bool Creature::IsMovementPreventedByCasting() const
{
    if (!Unit::IsMovementPreventedByCasting() && !HasSpellFocus())
        return false;
 
    return true;
}
 
void Creature::StartPickPocketRefillTimer()
{
    _pickpocketLootRestore = GameTime::GetGameTime() + sWorld->getIntConfig(CONFIG_CREATURE_PICKPOCKET_REFILL);
}
 
bool Creature::CanGeneratePickPocketLoot() const
{
    return _pickpocketLootRestore <= GameTime::GetGameTime();
}
 
void Creature::SetTextRepeatId(uint8 textGroup, uint8 id)
{
    CreatureTextRepeatIds& repeats = m_textRepeat[textGroup];
    if (std::find(repeats.begin(), repeats.end(), id) == repeats.end())
        repeats.push_back(id);
    else
        TC_LOG_ERROR("sql.sql", "CreatureTextMgr: TextGroup {} for Creature({}) {}, id {} already added", uint32(textGroup), GetName(), GetGUID().ToString(), uint32(id));
}
 
CreatureTextRepeatIds Creature::GetTextRepeatGroup(uint8 textGroup)
{
    CreatureTextRepeatIds ids;
 
    CreatureTextRepeatGroup::const_iterator groupItr = m_textRepeat.find(textGroup);
    if (groupItr != m_textRepeat.end())
        ids = groupItr->second;
 
    return ids;
}
 
void Creature::ClearTextRepeatGroup(uint8 textGroup)
{
    CreatureTextRepeatGroup::iterator groupItr = m_textRepeat.find(textGroup);
    if (groupItr != m_textRepeat.end())
        groupItr->second.clear();
}
 
bool Creature::CanGiveExperience() const
{
    return !IsCritter()
        && !IsPet()
        && !IsTotem()
        && !(GetCreatureTemplate()->flags_extra & CREATURE_FLAG_EXTRA_NO_XP);
}
 
bool Creature::IsEngaged() const
{
    if (CreatureAI const* ai = AI())
        return ai->IsEngaged();
    return false;
}
 
void Creature::AtEngage(Unit* target)
{
    Unit::AtEngage(target);
 
    if (!(GetCreatureTemplate()->type_flags & CREATURE_TYPE_FLAG_ALLOW_MOUNTED_COMBAT))
        Dismount();
 
    RefreshCanSwimFlag();
 
    if (IsPet() || IsGuardian()) // update pets' speed for catchup OOC speed
    {
        UpdateSpeed(MOVE_RUN);
        UpdateSpeed(MOVE_SWIM);
        UpdateSpeed(MOVE_FLIGHT);
    }
 
    MovementGeneratorType const movetype = GetMotionMaster()->GetCurrentMovementGeneratorType();
    if (movetype == WAYPOINT_MOTION_TYPE || movetype == POINT_MOTION_TYPE || (IsAIEnabled() && AI()->IsEscorted()))
    {
        SetHomePosition(GetPosition());
 
        // if its a vehicle, set the home positon of every creature passenger at engage
        // so that they are in combat range if hostile
        if (Vehicle* vehicle = GetVehicleKit())
        {
            for (auto seat = vehicle->Seats.begin(); seat != vehicle->Seats.end(); ++seat)
                if (Unit* passenger = ObjectAccessor::GetUnit(*this, seat->second.Passenger.Guid))
                    if (Creature* creature = passenger->ToCreature())
                        creature->SetHomePosition(GetPosition());
        }
    }
 
    if (CreatureAI* ai = AI())
        ai->JustEngagedWith(target);
    if (CreatureGroup* formation = GetFormation())
        formation->MemberEngagingTarget(this, target);
}
 
void Creature::AtDisengage()
{
    Unit::AtDisengage();
 
    ClearUnitState(UNIT_STATE_ATTACK_PLAYER);
    if (IsAlive() && HasDynamicFlag(UNIT_DYNFLAG_TAPPED))
        ReplaceAllDynamicFlags(GetCreatureTemplate()->dynamicflags);
 
    if (IsPet() || IsGuardian()) // update pets' speed for catchup OOC speed
    {
        UpdateSpeed(MOVE_RUN);
        UpdateSpeed(MOVE_SWIM);
        UpdateSpeed(MOVE_FLIGHT);
    }
}
 
bool Creature::IsEscorted() const
{
    if (CreatureAI const* ai = AI())
        return ai->IsEscorted();
    return false;
}
 
std::string Creature::GetDebugInfo() const
{
    std::stringstream sstr;
    sstr << Unit::GetDebugInfo() << "\n"
        << "AIName: " << GetAIName() << " ScriptName: " << GetScriptName()
        << " WaypointPath: " << GetWaypointPath() << " SpawnId: " << GetSpawnId();
    return sstr.str();
}
 
void Creature::ExitVehicle(Position const* /*exitPosition*/)
{
    bool const isInVehicle = GetVehicle();
    Unit::ExitVehicle();
 
    // if alive creature exits a vehicle, set it's home position to the
    // exited position so it won't run away (home) and evade if it's hostile
    if (isInVehicle && IsAlive())
        SetHomePosition(GetPosition());
}