/*
 * This file is part of the AzerothCore 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 "AccountMgr.h"
#include "BattlegroundAV.h"
#include "CellImpl.h"
#include "CreatureAISelector.h"
#include "DisableMgr.h"
#include "GameObjectAI.h"
#include "GameObjectModel.h"
#include "GameTime.h"
#include "GridNotifiersImpl.h"
#include "Group.h"
#include "GroupMgr.h"
#include "ObjectMgr.h"
#include "OutdoorPvPMgr.h"
#include "PoolMgr.h"
#include "ScriptMgr.h"
#include "SpellMgr.h"
#include "Transport.h"
#include "UpdateFieldFlags.h"
#include "World.h"
#include <G3D/Box.h>
#include <G3D/CoordinateFrame.h>
#include <G3D/Quat.h>

GameObject::GameObject() : WorldObject(), MovableMapObject(),
    m_model(nullptr), m_goValue(), m_AI(nullptr)
{
    m_objectType |= TYPEMASK_GAMEOBJECT;
    m_objectTypeId = TYPEID_GAMEOBJECT;

    m_updateFlag = (UPDATEFLAG_LOWGUID | UPDATEFLAG_STATIONARY_POSITION | UPDATEFLAG_POSITION | UPDATEFLAG_ROTATION);

    m_valuesCount = GAMEOBJECT_END;
    m_respawnTime = 0;
    m_respawnDelayTime = 300;
    m_despawnDelay = 0;
    m_despawnRespawnTime = 0s;
    m_restockTime = 0s;
    m_lootState = GO_NOT_READY;
    m_spawnedByDefault = true;
    m_allowModifyDestructibleBuilding = true;
    m_usetimes = 0;
    m_spellId = 0;
    m_cooldownTime = 0;
    m_goInfo = nullptr;
    m_goData = nullptr;
    m_packedRotation = 0;

    m_spawnId = 0;

    m_lootRecipientGroup = 0;
    m_groupLootTimer = 0;
    lootingGroupLowGUID = 0;
    m_lootGenerationTime = 0;

    ResetLootMode(); // restore default loot mode
    loot.sourceGameObject = this;
    m_stationaryPosition.Relocate(0.0f, 0.0f, 0.0f, 0.0f);
}

GameObject::~GameObject()
{
    delete m_AI;
    delete m_model;
    //if (m_uint32Values)                                      // field array can be not exist if GameOBject not loaded
    //    CleanupsBeforeDelete();
}

bool GameObject::AIM_Initialize()
{
    if (m_AI)
        delete m_AI;

    m_AI = FactorySelector::SelectGameObjectAI(this);

    if (!m_AI)
        return false;

    m_AI->InitializeAI();
    return true;
}

std::string const& GameObject::GetAIName() const
{
    return sObjectMgr->GetGameObjectTemplate(GetEntry())->AIName;
}

void GameObject::CleanupsBeforeDelete(bool /*finalCleanup*/)
{
    if (GetTransport() && !ToTransport())
    {
        GetTransport()->RemovePassenger(this);
        SetTransport(nullptr);
        m_movementInfo.transport.Reset();
        m_movementInfo.RemoveMovementFlag(MOVEMENTFLAG_ONTRANSPORT);
    }

    if (IsInWorld())
        RemoveFromWorld();

    if (m_uint32Values)                                      // field array can be not exist if GameOBject not loaded
        RemoveFromOwner();
}

void GameObject::RemoveFromOwner()
{
    ObjectGuid ownerGUID = GetOwnerGUID();
    if (!ownerGUID)
        return;

    if (Unit* owner = ObjectAccessor::GetUnit(*this, ownerGUID))
    {
        owner->RemoveGameObject(this, false);
        ASSERT(!GetOwnerGUID());
        return;
    }

    LOG_DEBUG("entities.gameobject", "Delete GameObject ({} Entry: {} SpellId {} LinkedGO {}) that lost references to owner {} GO list.",
        GetGUID().ToString(), GetGOInfo()->entry, m_spellId, GetGOInfo()->GetLinkedGameObjectEntry(), ownerGUID.ToString());

    SetOwnerGUID(ObjectGuid::Empty);
}

void GameObject::AddToWorld()
{
    ///- Register the gameobject for guid lookup
    if (!IsInWorld())
    {
        if (m_zoneScript)
            m_zoneScript->OnGameObjectCreate(this);

        GetMap()->GetObjectsStore().Insert<GameObject>(GetGUID(), this);
        if (m_spawnId)
            GetMap()->GetGameObjectBySpawnIdStore().insert(std::make_pair(m_spawnId, this));

        if (m_model)
        {
            m_model->UpdatePosition();
            GetMap()->InsertGameObjectModel(*m_model);
        }

        EnableCollision(GetGoState() == GO_STATE_READY || IsTransport()); // pussywizard: this startOpen is unneeded here, collision depends entirely on GOState

        WorldObject::AddToWorld();

        loot.sourceWorldObjectGUID = GetGUID();

        sScriptMgr->OnGameObjectAddWorld(this);
    }
}

void GameObject::RemoveFromWorld()
{
    ///- Remove the gameobject from the accessor
    if (IsInWorld())
    {
        sScriptMgr->OnGameObjectRemoveWorld(this);

        if (m_zoneScript)
            m_zoneScript->OnGameObjectRemove(this);

        RemoveFromOwner();

        if (m_model)
            if (GetMap()->ContainsGameObjectModel(*m_model))
                GetMap()->RemoveGameObjectModel(*m_model);

        if (Transport* transport = GetTransport())
            transport->RemovePassenger(this, true);

        // If linked trap exists, despawn it
        if (GameObject* linkedTrap = GetLinkedTrap())
        {
            linkedTrap->Delete();
        }

        WorldObject::RemoveFromWorld();

        if (m_spawnId)
            Acore::Containers::MultimapErasePair(GetMap()->GetGameObjectBySpawnIdStore(), m_spawnId, this);
        GetMap()->GetObjectsStore().Remove<GameObject>(GetGUID());
    }
}

void GameObject::CheckRitualList()
{
    if (m_unique_users.empty())
        return;

    uint32 animSpell = GetGOInfo()->summoningRitual.animSpell;
    if (!animSpell)
        animSpell = GetSpellId();

    for (GuidSet::iterator itr = m_unique_users.begin(); itr != m_unique_users.end();)
    {
        if (*itr == GetOwnerGUID())
        {
            ++itr;
            continue;
        }

        bool erase = true;
        if (Player* channeler = ObjectAccessor::GetPlayer(*this, *itr))
            if (Spell* spell = channeler->GetCurrentSpell(CURRENT_CHANNELED_SPELL))
                if (spell->m_spellInfo->Id == animSpell)
                    erase = false;

        if (erase)
            m_unique_users.erase(itr++);
        else
            ++itr;
    }
}

void GameObject::ClearRitualList()
{
    if (m_unique_users.empty())
        return;

    uint32 animSpell = GetGOInfo()->summoningRitual.animSpell;
    if (!animSpell)
        animSpell = GetSpellId();

    for (ObjectGuid const& guid : m_unique_users)
    {
        if (Player* channeler = ObjectAccessor::GetPlayer(*this, guid))
            if (Spell* spell = channeler->GetCurrentSpell(CURRENT_CHANNELED_SPELL))
                if (spell->m_spellInfo->Id == animSpell)
                {
                    spell->SendChannelUpdate(0);
                    spell->finish();
                }
    }

    m_unique_users.clear();
}

bool GameObject::Create(ObjectGuid::LowType guidlow, uint32 name_id, Map* map, uint32 phaseMask, float x, float y, float z, float ang, G3D::Quat const& rotation, uint32 animprogress, GOState go_state, uint32 artKit)
{
    ASSERT(map);
    SetMap(map);

    Relocate(x, y, z, ang);
    m_stationaryPosition.Relocate(x, y, z, ang);
    if (!IsPositionValid())
    {
        LOG_ERROR("entities.gameobject", "Gameobject (GUID: {} Entry: {}) not created. Suggested coordinates isn't valid (X: {} Y: {})", guidlow, name_id, x, y);
        return false;
    }

    SetPhaseMask(phaseMask, false);

    UpdatePositionData();

    SetZoneScript();
    if (m_zoneScript)
    {
        name_id = m_zoneScript->GetGameObjectEntry(guidlow, name_id);
        if (!name_id)
            return false;
    }

    GameObjectTemplate const* goinfo = sObjectMgr->GetGameObjectTemplate(name_id);
    if (!goinfo)
    {
        LOG_ERROR("sql.sql", "Gameobject (GUID: {} Entry: {}) not created: non-existing entry in `gameobject_template`. Map: {} (X: {} Y: {} Z: {})", guidlow, name_id, map->GetId(), x, y, z);
        return false;
    }

    Object::_Create(guidlow, goinfo->entry, HighGuid::GameObject);

    m_goInfo = goinfo;

    if (goinfo->type >= MAX_GAMEOBJECT_TYPE)
    {
        LOG_ERROR("sql.sql", "Gameobject (GUID: {} Entry: {}) not created: non-existing GO type '{}' in `gameobject_template`. It will crash client if created.", guidlow, name_id, goinfo->type);
        return false;
    }

    GameObjectAddon const* addon = sObjectMgr->GetGameObjectAddon(GetSpawnId());

    // hackfix for the hackfix down below
    switch (goinfo->entry)
    {
        // excluded ids from the hackfix below
        // used switch since there should be more
        case 181233: // maexxna portal effect
        case 181575: // maexxna portal
        case 20992: // theramore black shield
        case 21042: // theramore guard badge
            SetLocalRotation(rotation);
            break;
        default:
            // xinef: hackfix - but make it possible to use original WorldRotation (using special gameobject addon data)
            // pussywizard: temporarily calculate WorldRotation from orientation, do so until values in db are correct
            if (addon && addon->invisibilityType == INVISIBILITY_GENERAL && addon->InvisibilityValue == 0)
            {
                SetLocalRotation(rotation);
            }
            else
            {
                SetLocalRotationAngles(NormalizeOrientation(GetOrientation()), 0.0f, 0.0f);
            }
            break;
    }

    // pussywizard: no PathRotation for normal gameobjects
    SetTransportPathRotation(0.0f, 0.0f, 0.0f, 1.0f);

    SetObjectScale(goinfo->size);

    if (GameObjectTemplateAddon const* templateAddon = GetTemplateAddon())
    {
        SetUInt32Value(GAMEOBJECT_FACTION, templateAddon->faction);
        ReplaceAllGameObjectFlags((GameObjectFlags)templateAddon->flags);
    }

    SetEntry(goinfo->entry);

    // set name for logs usage, doesn't affect anything ingame
    SetName(goinfo->name);

    // GAMEOBJECT_BYTES_1, index at 0, 1, 2 and 3
    SetGoType(GameobjectTypes(goinfo->type));

    if (IsInstanceGameobject())
    {
        if (InstanceScript* instance = GetInstanceScript())
        {
            switch (uint8 state = instance->GetStoredGameObjectState(GetSpawnId()))
            {
                case 0:
                    SetGoState(GO_STATE_READY);
                    SwitchDoorOrButton(true);
                    break;
                case 1:
                case 2:
                    SetGoState((GOState)state);
                    break;
                default:
                    SetGoState(go_state);
                    break;
            }
        }
    }
    else
    {
        SetGoState(go_state);
    }

    SetGoArtKit(artKit);

    SetDisplayId(goinfo->displayId);

    if (!m_model)
        m_model = CreateModel();

    switch (goinfo->type)
    {
        case GAMEOBJECT_TYPE_FISHINGHOLE:
            SetGoAnimProgress(animprogress);
            m_goValue.FishingHole.MaxOpens = urand(GetGOInfo()->fishinghole.minSuccessOpens, GetGOInfo()->fishinghole.maxSuccessOpens);
            break;
        case GAMEOBJECT_TYPE_DESTRUCTIBLE_BUILDING:
            m_goValue.Building.Health = goinfo->building.intactNumHits + goinfo->building.damagedNumHits;
            m_goValue.Building.MaxHealth = m_goValue.Building.Health;
            SetGoAnimProgress(255);
            break;
        case GAMEOBJECT_TYPE_FISHINGNODE:
            SetGoAnimProgress(0);
            break;
        case GAMEOBJECT_TYPE_TRAP:
            if (GetGOInfo()->trap.stealthed)
            {
                m_stealth.AddFlag(STEALTH_TRAP);
                m_stealth.AddValue(STEALTH_TRAP, 70);
            }

            if (GetGOInfo()->trap.invisible)
            {
                m_invisibility.AddFlag(INVISIBILITY_TRAP);
                m_invisibility.AddValue(INVISIBILITY_TRAP, 300);
            }
            break;
        default:
            SetGoAnimProgress(animprogress);
            break;
    }

    if (addon)
    {
        if (addon->InvisibilityValue)
        {
            m_invisibility.AddFlag(addon->invisibilityType);
            m_invisibility.AddValue(addon->invisibilityType, addon->InvisibilityValue);
        }
    }

    LastUsedScriptID = GetScriptId();
    AIM_Initialize();

    if (uint32 linkedEntry = GetGOInfo()->GetLinkedGameObjectEntry())
    {
        GameObject* linkedGO = new GameObject();
        if (linkedGO->Create(map->GenerateLowGuid<HighGuid::GameObject>(), linkedEntry, map, phaseMask, x, y, z, ang, rotation, 255, GO_STATE_READY))
        {
            SetLinkedTrap(linkedGO);
            map->AddToMap(linkedGO);
        }
        else
        {
            delete linkedGO;
        }
    }

    // Check if GameObject is Large
    if (goinfo->IsLargeGameObject())
        SetVisibilityDistanceOverride(VisibilityDistanceType::Large);

    // Check if GameObject is Infinite
    if (goinfo->IsInfiniteGameObject())
        SetVisibilityDistanceOverride(VisibilityDistanceType::Infinite);

    return true;
}

void GameObject::Update(uint32 diff)
{
    WorldObject::Update(diff);

    if (AI())
        AI()->UpdateAI(diff);
    else if (!AIM_Initialize())
        LOG_ERROR("entities.gameobject", "Could not initialize GameObjectAI");

    if (m_despawnDelay)
    {
        if (m_despawnDelay > diff)
        {
            m_despawnDelay -= diff;
        }
        else
        {
            m_despawnDelay = 0;
            DespawnOrUnsummon(0ms, m_despawnRespawnTime);
        }
    }

    for (std::unordered_map<ObjectGuid, int32>::iterator itr = m_SkillupList.begin(); itr != m_SkillupList.end();)
    {
        if (itr->second > 0)
        {
            if (itr->second > static_cast<int32>(diff))
            {
                itr->second -= static_cast<int32>(diff);
                ++itr;
            }
            else
            {
                itr = m_SkillupList.erase(itr);
            }
        }
        else
        {
            ++itr;
        }
    }

    switch (m_lootState)
    {
        case GO_NOT_READY:
            {
                switch (GetGoType())
                {
                    case GAMEOBJECT_TYPE_TRAP:
                        {
                            // Arming Time for GAMEOBJECT_TYPE_TRAP (6)
                            GameObjectTemplate const* goInfo = GetGOInfo();
                            // Bombs
                            if (goInfo->trap.type == 2)
                                m_cooldownTime = GameTime::GetGameTimeMS().count() + 10 * IN_MILLISECONDS; // Hardcoded tooltip value
                            else if (GetOwner())
                                m_cooldownTime = GameTime::GetGameTimeMS().count() + goInfo->trap.startDelay * IN_MILLISECONDS;

                            m_lootState = GO_READY;
                            break;
                        }
                    case GAMEOBJECT_TYPE_FISHINGNODE:
                        {
                            // fishing code (bobber ready)
                            if (GameTime::GetGameTime().count() > m_respawnTime - FISHING_BOBBER_READY_TIME)
                            {
                                // splash bobber (bobber ready now)
                                Unit* caster = GetOwner();
                                if (caster && caster->IsPlayer())
                                {
                                    SetGoState(GO_STATE_ACTIVE);
                                    ReplaceAllGameObjectFlags(GO_FLAG_NODESPAWN);

                                    UpdateData udata;
                                    WorldPacket packet;
                                    BuildValuesUpdateBlockForPlayer(&udata, caster->ToPlayer());
                                    udata.BuildPacket(packet);
                                    caster->ToPlayer()->SendDirectMessage(&packet);

                                    SendCustomAnim(GetGoAnimProgress());
                                }

                                m_lootState = GO_READY;                 // can be successfully open with some chance
                            }
                            return;
                        }
                    case GAMEOBJECT_TYPE_SUMMONING_RITUAL:
                        {
                            if (GameTime::GetGameTimeMS().count() < m_cooldownTime)
                                return;
                            GameObjectTemplate const* info = GetGOInfo();

                            CheckRitualList();

                            if (GetUniqueUseCount() < info->summoningRitual.reqParticipants)
                            {
                                SetLootState(GO_READY);
                                return;
                            }

                            Unit* owner = GetOwner();
                            Unit* spellCaster = owner ? owner : ObjectAccessor::GetPlayer(*this, m_ritualOwnerGUID);
                            if (!spellCaster)
                            {
                                SetLootState(GO_JUST_DEACTIVATED);
                                return;
                            }

                            uint32 spellId = info->summoningRitual.spellId;

                            if (spellId == 62330)                       // GO store nonexistent spell, replace by expected
                            {
                                // spell have reagent and mana cost but it not expected use its
                                // it triggered spell in fact casted at currently channeled GO
                                spellId = 61993;
                            }

                            // Cast casterTargetSpell at a random GO user
                            // on the current DB there is only one gameobject that uses this (Ritual of Doom)
                            // and its required target number is 1 (outter for loop will run once)
                            if (info->summoningRitual.casterTargetSpell && info->summoningRitual.casterTargetSpell != 1) // No idea why this field is a bool in some cases
                                for (uint32 i = 0; i < info->summoningRitual.casterTargetSpellTargets; i++)
                                    // m_unique_users can contain only player GUIDs
                                    if (Player* target = ObjectAccessor::GetPlayer(*this, Acore::Containers::SelectRandomContainerElement(m_unique_users)))
                                        spellCaster->CastSpell(target, info->summoningRitual.casterTargetSpell, true);

                            // finish owners spell
                            // xinef: properly process event cooldowns
                            if (owner)
                            {
                                if (Spell* spell = owner->GetCurrentSpell(CURRENT_CHANNELED_SPELL))
                                {
                                    spell->SendChannelUpdate(0);
                                    spell->finish(false);
                                }
                            }

                            // can be deleted now
                            if (!info->summoningRitual.ritualPersistent)
                                SetLootState(GO_JUST_DEACTIVATED);
                            else
                                SetLootState(GO_READY);

                            ClearRitualList();
                            spellCaster->CastSpell(spellCaster, spellId, true);
                            return;
                        }
                    case GAMEOBJECT_TYPE_CHEST:
                        if (m_restockTime > GameTime::GetGameTime())
                        {
                            return;
                        }
                        // If there is no restock timer, or if the restock timer passed, the chest becomes ready to loot
                        m_restockTime = 0s;
                        m_lootState = GO_READY;
                        AddToObjectUpdateIfNeeded();
                        break;
                    default:
                        m_lootState = GO_READY;                         // for other GOis same switched without delay to GO_READY
                        break;
                }
                [[fallthrough]];
            }
        case GO_READY:
            {
                if (m_respawnTime > 0)                          // timer on
                {
                    time_t now = GameTime::GetGameTime().count();
                    if (m_respawnTime <= now)            // timer expired
                    {
                        ObjectGuid dbtableHighGuid = ObjectGuid::Create<HighGuid::GameObject>(GetEntry(), m_spawnId);
                        time_t linkedRespawntime = GetMap()->GetLinkedRespawnTime(dbtableHighGuid);
                        if (linkedRespawntime)             // Can't respawn, the master is dead
                        {
                            ObjectGuid targetGuid = sObjectMgr->GetLinkedRespawnGuid(dbtableHighGuid);
                            if (targetGuid == dbtableHighGuid) // if linking self, never respawn (check delayed to next day)
                                SetRespawnTime(DAY);
                            else
                                m_respawnTime = (now > linkedRespawntime ? now : linkedRespawntime) + urand(5, MINUTE); // else copy time from master and add a little
                            SaveRespawnTime(); // also save to DB immediately
                            return;
                        }

                        m_respawnTime = 0;
                        m_SkillupList.clear();
                        m_usetimes = 0;

                        switch (GetGoType())
                        {
                            case GAMEOBJECT_TYPE_FISHINGNODE:   //  can't fish now
                                {
                                    Unit* caster = GetOwner();
                                    if (caster && caster->IsPlayer())
                                    {
                                        caster->ToPlayer()->RemoveGameObject(this, false);

                                        WorldPacket data(SMSG_FISH_ESCAPED, 0);
                                        caster->ToPlayer()->SendDirectMessage(&data);
                                    }
                                    // can be delete
                                    m_lootState = GO_JUST_DEACTIVATED;
                                    return;
                                }
                            case GAMEOBJECT_TYPE_DOOR:
                            case GAMEOBJECT_TYPE_BUTTON:
                                //we need to open doors if they are closed (add there another condition if this code breaks some usage, but it need to be here for battlegrounds)
                                if (GetGoState() != GO_STATE_READY)
                                    ResetDoorOrButton();
                                break;
                            case GAMEOBJECT_TYPE_FISHINGHOLE:
                                // Initialize a new max fish count on respawn
                                m_goValue.FishingHole.MaxOpens = urand(GetGOInfo()->fishinghole.minSuccessOpens, GetGOInfo()->fishinghole.maxSuccessOpens);
                                break;
                            default:
                                break;
                        }

                        if (!m_spawnedByDefault)        // despawn timer
                        {
                            // can be despawned or destroyed
                            SetLootState(GO_JUST_DEACTIVATED);
                            return;
                        }

                        // Xinef: Call AI Reset (required for example in SmartAI to clear one time events)
                        if (AI())
                            AI()->Reset();

                        // respawn timer
                        uint32 poolid = m_spawnId ? sPoolMgr->IsPartOfAPool<GameObject>(m_spawnId) : 0;
                        if (poolid)
                            sPoolMgr->UpdatePool<GameObject>(poolid, m_spawnId);
                        else
                            GetMap()->AddToMap(this);
                    }
                }

                if (isSpawned())
                {
                    // traps can have time and can not have
                    GameObjectTemplate const* goInfo = GetGOInfo();
                    if (goInfo->type == GAMEOBJECT_TYPE_TRAP)
                    {
                        if (GameTime::GetGameTimeMS().count() < m_cooldownTime)
                            break;

                        // Type 2 - Bomb (will go away after casting it's spell)
                        if (goInfo->trap.type == 2)
                        {
                            SetLootState(GO_ACTIVATED);
                            break;
                        }

                        /// @todo This is activation radius. Casting radius must be selected from spell data.
                        /// @todo Move activated state code to GO_ACTIVATED, in this place just check for activation and set state.
                        float radius = float(goInfo->trap.diameter) * 0.5f;
                        if (!goInfo->trap.diameter)
                        {
                            // Cast in other case (at some triggering/linked go/etc explicit call)
                            if (goInfo->trap.cooldown != 3 || m_respawnTime > 0)
                            {
                                break;
                            }

                            radius = 3.f;
                        }

                        // Type 0 and 1 - trap (type 0 will not get removed after casting a spell)
                        Unit* owner = GetOwner();
                        Unit* target = nullptr;                            // pointer to appropriate target if found any

                        // Note: this hack with search required until GO casting not implemented
                        // search unfriendly creature
                        if (owner && goInfo->trap.autoCloseTime != -1) // hunter trap
                        {
                            Acore::NearestAttackableNoTotemUnitInObjectRangeCheck checker(this, owner, radius);
                            Acore::UnitSearcher<Acore::NearestAttackableNoTotemUnitInObjectRangeCheck> searcher(this, target, checker);
                            Cell::VisitObjects(this, searcher, radius);
                        }
                        else                                        // environmental trap
                        {
                            // environmental damage spells already have around enemies targeting but this not help in case not existed GO casting support
                            // affect only players
                            Player* player = nullptr;
                            Acore::AnyPlayerInObjectRangeCheck checker(this, radius, true, true);
                            Acore::PlayerSearcher<Acore::AnyPlayerInObjectRangeCheck> searcher(this, player, checker);
                            Cell::VisitObjects(this, searcher, radius);
                            target = player;
                        }

                        if (target)
                        {
                            SetLootState(GO_ACTIVATED, target);
                        }
                    }
                    else if (uint32 max_charges = goInfo->GetCharges())
                    {
                        if (m_usetimes >= max_charges)
                        {
                            m_usetimes = 0;
                            SetLootState(GO_JUST_DEACTIVATED);      // can be despawned or destroyed
                        }
                    }
                }

                break;
            }
        case GO_ACTIVATED:
            {
                switch (GetGoType())
                {
                    case GAMEOBJECT_TYPE_DOOR:
                    case GAMEOBJECT_TYPE_BUTTON:
                        if (GetGOInfo()->GetAutoCloseTime() && GameTime::GetGameTimeMS().count() >= m_cooldownTime)
                            ResetDoorOrButton();
                        break;
                    case GAMEOBJECT_TYPE_GOOBER:
                        if (GameTime::GetGameTimeMS().count() >= m_cooldownTime)
                        {
                            RemoveGameObjectFlag(GO_FLAG_IN_USE);

                            SetLootState(GO_JUST_DEACTIVATED);
                        }
                        break;
                    case GAMEOBJECT_TYPE_CHEST:
                        if (m_groupLootTimer)
                        {
                            if (m_groupLootTimer <= diff)
                            {
                                Group* group = sGroupMgr->GetGroupByGUID(lootingGroupLowGUID);
                                if (group)
                                    group->EndRoll(&loot, GetMap());
                                m_groupLootTimer = 0;
                                lootingGroupLowGUID = 0;
                            }
                            else
                            {
                                m_groupLootTimer -= diff;
                            }
                        }

                        // Non-consumable chest was partially looted and restock time passed, restock all loot now
                        if (GetGOInfo()->chest.consumable == 0 && GameTime::GetGameTime() >= m_restockTime)
                        {
                            m_restockTime = 0s;
                            m_lootState = GO_READY;
                            AddToObjectUpdateIfNeeded();
                        }
                        break;
                    case GAMEOBJECT_TYPE_TRAP:
                    {
                        GameObjectTemplate const* goInfo = GetGOInfo();
                        if (goInfo->trap.type == 2)
                        {
                            if (goInfo->trap.spellId)
                                CastSpell(nullptr, goInfo->trap.spellId);  // FIXME: null target won't work for target type 1
                            SetLootState(GO_JUST_DEACTIVATED);
                        }
                        else if (Unit* target = ObjectAccessor::GetUnit(*this, _lootStateUnitGUID))
                        {
                            if (goInfo->trap.spellId)
                                CastSpell(target, goInfo->trap.spellId);

                            m_cooldownTime = GameTime::GetGameTimeMS().count() + (goInfo->trap.cooldown ? goInfo->trap.cooldown : uint32(4)) * IN_MILLISECONDS; // template or 4 seconds

                            if (goInfo->trap.type == 1)
                                SetLootState(GO_JUST_DEACTIVATED);
                            else if (!goInfo->trap.type)
                                SetLootState(GO_READY);

                            // Battleground gameobjects have data2 == 0 && data5 == 3
                            if (!goInfo->trap.diameter && goInfo->trap.cooldown == 3)
                                if (Player* player = target->ToPlayer())
                                    if (Battleground* bg = player->GetBattleground())
                                        bg->HandleTriggerBuff(this);
                        }
                        break;
                    }
                    default:
                        break;
                }
                break;
            }
        case GO_JUST_DEACTIVATED:
            {
                // If nearby linked trap exists, despawn it
                if (GameObject* linkedTrap = GetLinkedTrap())
                {
                    linkedTrap->DespawnOrUnsummon();
                }

                //if Gameobject should cast spell, then this, but some GOs (type = 10) should be destroyed
                if (GetGoType() == GAMEOBJECT_TYPE_GOOBER)
                {
                    SetGoState(GO_STATE_READY);

                    //any return here in case battleground traps
                    // Xinef: Do not return here for summoned gos that should be deleted few lines below
                    // Xinef: Battleground objects are treated as spawned by default
                    if (GameObjectTemplateAddon const* addon = GetTemplateAddon())
                        if ((addon->flags & GO_FLAG_NODESPAWN) && isSpawnedByDefault())
                            return;
                }

                loot.clear();

                // Do not delete chests or goobers that are not consumed on loot, while still allowing them to despawn when they expire if summoned
                bool isSummonedAndExpired = (GetOwner() || GetSpellId()) && m_respawnTime == 0;
                if ((GetGoType() == GAMEOBJECT_TYPE_CHEST || GetGoType() == GAMEOBJECT_TYPE_GOOBER) && !GetGOInfo()->IsDespawnAtAction() && !isSummonedAndExpired)
                {
                    if (GetGoType() == GAMEOBJECT_TYPE_CHEST && GetGOInfo()->chest.chestRestockTime > 0)
                    {
                        // Start restock timer when the chest is fully looted
                        m_restockTime = GameTime::GetGameTime() + Seconds(GetGOInfo()->chest.chestRestockTime);
                        SetLootState(GO_NOT_READY);
                        AddToObjectUpdateIfNeeded();
                    }
                    else
                    {
                        SetLootState(GO_READY);
                    }

                    UpdateObjectVisibility();
                    return;
                }
                else if (GetOwnerGUID() || GetSpellId())
                {
                    SetRespawnTime(0);
                    Delete();
                    return;
                }

                SetLootState(GO_READY);

                //burning flags in some battlegrounds, if you find better condition, just add it
                if (GetGOInfo()->IsDespawnAtAction() || GetGoAnimProgress() > 0)
                {
                    SendObjectDeSpawnAnim(GetGUID());
                    //reset flags
                    if (GameObjectTemplateAddon const* addon = GetTemplateAddon())
                        ReplaceAllGameObjectFlags((GameObjectFlags)addon->flags);
                }

                if (!m_respawnDelayTime)
                    return;

                if (!m_spawnedByDefault)
                {
                    m_respawnTime = 0;
                    DestroyForVisiblePlayers(); // xinef: old UpdateObjectVisibility();
                    return;
                }

                uint32 dynamicRespawnDelay = GetMap()->ApplyDynamicModeRespawnScaling(this, m_respawnDelayTime);
                m_respawnTime = GameTime::GetGameTime().count() + dynamicRespawnDelay;

                // if option not set then object will be saved at grid unload
                if (GetMap()->IsDungeon())
                    SaveRespawnTime();

                DestroyForVisiblePlayers(); // xinef: old UpdateObjectVisibility();
                break;
            }
    }

    sScriptMgr->OnGameObjectUpdate(this, diff);
}

GameObjectTemplateAddon const* GameObject::GetTemplateAddon() const
{
    return sObjectMgr->GetGameObjectTemplateAddon(GetGOInfo()->entry);
}

void GameObject::Refresh()
{
    // not refresh despawned not casted GO (despawned casted GO destroyed in all cases anyway)
    if (m_respawnTime > 0 && m_spawnedByDefault)
        return;

    if (isSpawned())
        GetMap()->AddToMap(this);
}

void GameObject::AddUniqueUse(Player* player)
{
    AddUse();
    m_unique_users.insert(player->GetGUID());
}

void GameObject::DespawnOrUnsummon(Milliseconds delay /*= 0ms*/, Seconds forceRespawnTime /*= 0s*/)
{
    if (delay > 0ms)
    {
        if (!m_despawnDelay || m_despawnDelay > delay.count())
        {
            m_despawnDelay = delay.count();
            m_despawnRespawnTime = forceRespawnTime;
        }
    }
    else
    {
        if (m_goData)
        {
            int32 const respawnDelay = (forceRespawnTime > 0s) ? forceRespawnTime.count() : m_goData->spawntimesecs;
            SetRespawnTime(respawnDelay);
        }

       // Respawn is handled by the gameobject itself.
       // If we delete it from world, it simply never respawns...
       // Uncomment this and remove the following lines if dynamic spawn is implemented.
       // Delete();
        {
            SetLootState(GO_JUST_DEACTIVATED);
            SendObjectDeSpawnAnim(GetGUID());
            SetGoState(GO_STATE_READY);

            if (GameObject* trap = GetLinkedTrap())
            {
                trap->DespawnOrUnsummon();
            }

            if (GameObjectTemplateAddon const* addon = GetTemplateAddon())
            {
                ReplaceAllGameObjectFlags((GameObjectFlags)addon->flags);
            }

            uint32 poolid = m_spawnId ? sPoolMgr->IsPartOfAPool<GameObject>(m_spawnId) : 0;
            if (poolid)
            {
                sPoolMgr->UpdatePool<GameObject>(poolid, m_spawnId);
            }
        }
    }
}

void GameObject::Delete()
{
    SetLootState(GO_NOT_READY);
    RemoveFromOwner();

    SendObjectDeSpawnAnim(GetGUID());

    SetGoState(GO_STATE_READY);

    if (GameObjectTemplateAddon const* addon = GetTemplateAddon())
        ReplaceAllGameObjectFlags((GameObjectFlags)addon->flags);

    // Xinef: if ritual gameobject is removed, clear anim spells
    if (GetGOInfo()->type == GAMEOBJECT_TYPE_SUMMONING_RITUAL)
        ClearRitualList();

    uint32 poolid = m_spawnId ? sPoolMgr->IsPartOfAPool<GameObject>(m_spawnId) : 0;
    if (poolid)
        sPoolMgr->UpdatePool<GameObject>(poolid, m_spawnId);
    else
        AddObjectToRemoveList();
}

void GameObject::GetFishLoot(Loot* fishLoot, Player* lootOwner, bool junk /*= false*/)
{
    fishLoot->clear();

    uint32 zone, area;
    uint32 defaultZone = 1;
    GetZoneAndAreaId(zone, area);

    uint16 lootMode = junk ? LOOT_MODE_JUNK_FISH : LOOT_MODE_DEFAULT;
    // Check to fill loot in the order area - zone - defaultZone.
    // This is because area and zone is not set in some places, like Off the coast of Storm Peaks.
    uint32 lootZones[] = { area, zone, defaultZone };
    for (uint32 fillZone : lootZones)
    {
        fishLoot->FillLoot(fillZone, LootTemplates_Fishing, lootOwner, true, true, lootMode);

        // If the loot is filled and the loot is eligible, then we break out of the loop.
        if (!fishLoot->empty() && !fishLoot->isLooted())
            break;
    }
}

void GameObject::SaveToDB(bool saveAddon /*= false*/)
{
    // this should only be used when the gameobject has already been loaded
    // preferably after adding to map, because mapid may not be valid otherwise
    GameObjectData const* data = sObjectMgr->GetGameObjectData(m_spawnId);
    if (!data)
    {
        LOG_ERROR("entities.gameobject", "GameObject::SaveToDB failed, cannot get gameobject data!");
        return;
    }

    SaveToDB(GetMapId(), data->spawnMask, data->phaseMask, saveAddon);
}

void GameObject::SaveToDB(uint32 mapid, uint8 spawnMask, uint32 phaseMask, bool saveAddon /*= false*/)
{
    const GameObjectTemplate* goI = GetGOInfo();

    if (!goI)
        return;

    if (!m_spawnId)
        m_spawnId = sObjectMgr->GenerateGameObjectSpawnId();

    // update in loaded data (changing data only in this place)
    GameObjectData& data = sObjectMgr->NewGOData(m_spawnId);

    data.id = GetEntry();
    data.mapid = mapid;
    data.phaseMask = phaseMask;
    data.posX = GetPositionX();
    data.posY = GetPositionY();
    data.posZ = GetPositionZ();
    data.orientation = GetOrientation();
    data.rotation = m_localRotation;
    data.spawntimesecs = m_spawnedByDefault ? m_respawnDelayTime : -(int32)m_respawnDelayTime;
    data.animprogress = GetGoAnimProgress();
    data.go_state = GetGoState();
    data.spawnMask = spawnMask;
    data.artKit = GetGoArtKit();

    // Update in DB
    WorldDatabaseTransaction trans = WorldDatabase.BeginTransaction();

    uint8 index = 0;

    WorldDatabasePreparedStatement* stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_GAMEOBJECT);
    stmt->SetData(0, m_spawnId);
    trans->Append(stmt);

    stmt = WorldDatabase.GetPreparedStatement(WORLD_INS_GAMEOBJECT);
    stmt->SetData(index++, m_spawnId);
    stmt->SetData(index++, GetEntry());
    stmt->SetData(index++, uint16(mapid));
    stmt->SetData(index++, spawnMask);
    stmt->SetData(index++, GetPhaseMask());
    stmt->SetData(index++, GetPositionX());
    stmt->SetData(index++, GetPositionY());
    stmt->SetData(index++, GetPositionZ());
    stmt->SetData(index++, GetOrientation());
    stmt->SetData(index++, m_localRotation.x);
    stmt->SetData(index++, m_localRotation.y);
    stmt->SetData(index++, m_localRotation.z);
    stmt->SetData(index++, m_localRotation.w);
    stmt->SetData(index++, int32(m_respawnDelayTime));
    stmt->SetData(index++, GetGoAnimProgress());
    stmt->SetData(index++, uint8(GetGoState()));
    trans->Append(stmt);

    if (saveAddon && !sObjectMgr->GetGameObjectAddon(m_spawnId))
    {
        index = 0;
        stmt = WorldDatabase.GetPreparedStatement(WORLD_INS_GAMEOBJECT_ADDON);
        stmt->SetData(index++, m_spawnId);
        trans->Append(stmt);
    }

    WorldDatabase.CommitTransaction(trans);
    sScriptMgr->OnGameObjectSaveToDB(this);
}

bool GameObject::LoadGameObjectFromDB(ObjectGuid::LowType spawnId, Map* map, bool addToMap)
{
    GameObjectData const* data = sObjectMgr->GetGameObjectData(spawnId);

    if (!data)
    {
        LOG_ERROR("sql.sql", "Gameobject (GUID: {}) not found in table `gameobject`, can't load. ", spawnId);
        return false;
    }

    uint32 entry = data->id;
    //uint32 map_id = data->mapid;                          // already used before call
    uint32 phaseMask = data->phaseMask;
    float x = data->posX;
    float y = data->posY;
    float z = data->posZ;
    float ang = data->orientation;

    uint32 animprogress = data->animprogress;
    GOState go_state = data->go_state;
    uint32 artKit = data->artKit;

    m_goData = data;
    m_spawnId = spawnId;

    if (!Create(map->GenerateLowGuid<HighGuid::GameObject>(), entry, map, phaseMask, x, y, z, ang, data->rotation, animprogress, go_state, artKit))
        return false;

    if (data->spawntimesecs >= 0)
    {
        m_spawnedByDefault = true;

        if (!GetGOInfo()->GetDespawnPossibility() && !GetGOInfo()->IsDespawnAtAction())
        {
            SetGameObjectFlag(GO_FLAG_NODESPAWN);
            m_respawnDelayTime = 0;
            m_respawnTime = 0;
        }
        else
        {
            m_respawnDelayTime = data->spawntimesecs;
            m_respawnTime = GetMap()->GetGORespawnTime(m_spawnId);

            // ready to respawn
            if (m_respawnTime && m_respawnTime <= GameTime::GetGameTime().count())
            {
                m_respawnTime = 0;
                GetMap()->RemoveGORespawnTime(m_spawnId);
            }
        }
    }
    else
    {
        m_spawnedByDefault = false;
        m_respawnDelayTime = -data->spawntimesecs;
        m_respawnTime = 0;
    }

    if (addToMap && !GetMap()->AddToMap(this))
        return false;

    return true;
}

void GameObject::DeleteFromDB()
{
    GetMap()->RemoveGORespawnTime(m_spawnId);
    sObjectMgr->DeleteGOData(m_spawnId);

    WorldDatabasePreparedStatement* stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_GAMEOBJECT);
    stmt->SetData(0, m_spawnId);
    WorldDatabase.Execute(stmt);

    stmt = WorldDatabase.GetPreparedStatement(WORLD_DEL_EVENT_GAMEOBJECT);
    stmt->SetData(0, m_spawnId);
    WorldDatabase.Execute(stmt);
}

/*********************************************************/
/***                    QUEST SYSTEM                   ***/
/*********************************************************/
bool GameObject::hasQuest(uint32 quest_id) const
{
    QuestRelationBounds qr = sObjectMgr->GetGOQuestRelationBounds(GetEntry());
    for (QuestRelations::const_iterator itr = qr.first; itr != qr.second; ++itr)
    {
        if (itr->second == quest_id)
            return true;
    }
    return false;
}

bool GameObject::hasInvolvedQuest(uint32 quest_id) const
{
    QuestRelationBounds qir = sObjectMgr->GetGOQuestInvolvedRelationBounds(GetEntry());
    for (QuestRelations::const_iterator itr = qir.first; itr != qir.second; ++itr)
    {
        if (itr->second == quest_id)
            return true;
    }
    return false;
}

bool GameObject::IsTransport() const
{
    return GetGOInfo() && (GetGOInfo()->type == GAMEOBJECT_TYPE_TRANSPORT || GetGOInfo()->type == GAMEOBJECT_TYPE_MO_TRANSPORT);
}

bool GameObject::IsDestructibleBuilding() const
{
    GameObjectTemplate const* gInfo = GetGOInfo();
    if (!gInfo) return false;
    return gInfo->type == GAMEOBJECT_TYPE_DESTRUCTIBLE_BUILDING;
}

Unit* GameObject::GetOwner() const
{
    return ObjectAccessor::GetUnit(*this, GetOwnerGUID());
}

void GameObject::SaveRespawnTime(uint32 forceDelay)
{
    if (m_goData && m_goData->dbData && (forceDelay || m_respawnTime > GameTime::GetGameTime().count()) && m_spawnedByDefault)
    {
        time_t respawnTime = forceDelay ? GameTime::GetGameTime().count() + forceDelay : m_respawnTime;
        GetMap()->SaveGORespawnTime(m_spawnId, respawnTime);
    }
}

bool GameObject::IsNeverVisible() const
{
    if (WorldObject::IsNeverVisible())
        return true;

    if (GetGoType() == GAMEOBJECT_TYPE_SPELL_FOCUS && GetGOInfo()->spellFocus.serverOnly == 1)
        return true;

    return false;
}

bool GameObject::IsAlwaysVisibleFor(WorldObject const* seer) const
{
    if (WorldObject::IsAlwaysVisibleFor(seer))
        return true;

    if (IsTransport() || IsDestructibleBuilding())
        return true;

    if (!seer)
        return false;

    // Always seen by owner and friendly units
    if (ObjectGuid guid = GetOwnerGUID())
    {
        if (seer->GetGUID() == guid)
            return true;

        Unit* owner = GetOwner();
        if (owner)
        {
            if (seer->IsUnit() && owner->IsFriendlyTo(seer->ToUnit()))
                return true;
        }
    }

    return false;
}

bool GameObject::IsInvisibleDueToDespawn() const
{
    if (WorldObject::IsInvisibleDueToDespawn())
        return true;

    // Despawned
    if (!isSpawned())
        return true;

    return false;
}

void GameObject::SetRespawnTime(int32 respawn)
{
    m_respawnTime = respawn > 0 ? GameTime::GetGameTime().count() + respawn : 0;
    SetRespawnDelay(respawn);
    if (respawn && !m_spawnedByDefault)
    {
        UpdateObjectVisibility(true);
    }
}

void GameObject::SetRespawnDelay(int32 respawn)
{
    m_respawnDelayTime = respawn > 0 ? respawn : 0;
}

void GameObject::Respawn()
{
    if (m_spawnedByDefault && m_respawnTime > 0)
    {
        m_respawnTime = GameTime::GetGameTime().count();
        GetMap()->RemoveGORespawnTime(m_spawnId);
    }
}

bool GameObject::ActivateToQuest(Player* target) const
{
    if (target->HasQuestForGO(GetEntry()))
        return true;

    if (!GetGOInfo()->IsGameObjectForQuests())
        return false;

    switch (GetGoType())
    {
        case GAMEOBJECT_TYPE_QUESTGIVER:
            {
                GameObject* go = const_cast<GameObject*>(this);
                QuestGiverStatus questStatus = target->GetQuestDialogStatus(go);
                if (questStatus > DIALOG_STATUS_UNAVAILABLE)
                    return true;
                break;
            }
        case GAMEOBJECT_TYPE_CHEST:
            {
                // scan GO chest with loot including quest items
                if (target->GetQuestStatus(GetGOInfo()->chest.questId) == QUEST_STATUS_INCOMPLETE || LootTemplates_Gameobject.HaveQuestLootForPlayer(GetGOInfo()->GetLootId(), target))
                {
                    //TODO: fix this hack
                    //look for battlegroundAV for some objects which are only activated after mine gots captured by own team
                    if (GetEntry() == BG_AV_OBJECTID_MINE_N || GetEntry() == BG_AV_OBJECTID_MINE_S)
                        if (Battleground* bg = target->GetBattleground())
                            if (bg->GetBgTypeID(true) == BATTLEGROUND_AV && !bg->ToBattlegroundAV()->PlayerCanDoMineQuest(GetEntry(), target->GetTeamId()))
                                return false;
                    return true;
                }
                break;
            }
        case GAMEOBJECT_TYPE_GENERIC:
            {
                if (GetGOInfo()->_generic.questID == -1 || target->GetQuestStatus(GetGOInfo()->_generic.questID) == QUEST_STATUS_INCOMPLETE)
                    return true;
                break;
            }
        case GAMEOBJECT_TYPE_SPELL_FOCUS:
            {
                if (GetGOInfo()->spellFocus.questID > 0 && target->GetQuestStatus(GetGOInfo()->spellFocus.questID) == QUEST_STATUS_INCOMPLETE)
                    return true;
                break;
            }
        case GAMEOBJECT_TYPE_GOOBER:
            {
                if (GetGOInfo()->goober.questId == -1 || target->GetQuestStatus(GetGOInfo()->goober.questId) == QUEST_STATUS_INCOMPLETE)
                    return true;
                break;
            }
        default:
            break;
    }

    return false;
}

void GameObject::TriggeringLinkedGameObject(uint32 trapEntry, Unit* target)
{
    GameObjectTemplate const* trapInfo = sObjectMgr->GetGameObjectTemplate(trapEntry);
    if (!trapInfo || trapInfo->type != GAMEOBJECT_TYPE_TRAP)
        return;

    SpellInfo const* trapSpell = sSpellMgr->GetSpellInfo(trapInfo->trap.spellId);
    if (!trapSpell)                                          // checked at load already
        return;

    // xinef: many spells have range 0 but radius > 0
    float range = float(target->GetSpellMaxRangeForTarget(GetOwner(), trapSpell));
    if (range < 1.0f)
        range = 5.0f;

    // found correct GO
    // xinef: we should use the trap (checks for despawn type)
    if (GameObject* trapGO = GetLinkedTrap())
    {
        trapGO->Use(target); // trapGO->CastSpell(target, trapInfo->trap.spellId);
    }
}

GameObject* GameObject::LookupFishingHoleAround(float range)
{
    GameObject* ok = nullptr;

    Acore::NearestGameObjectFishingHole u_check(*this, range);
    Acore::GameObjectSearcher<Acore::NearestGameObjectFishingHole> checker(this, ok, u_check);

    Cell::VisitObjects(this, checker, range);
    return ok;
}

void GameObject::ResetDoorOrButton()
{
    if (m_lootState == GO_READY || m_lootState == GO_JUST_DEACTIVATED)
        return;

    SwitchDoorOrButton(false);
    SetLootState(GO_JUST_DEACTIVATED);
    m_cooldownTime = 0;
}

void GameObject::UseDoorOrButton(uint32 time_to_restore, bool alternative /* = false */, Unit* user /*=nullptr*/)
{
    if (m_lootState != GO_READY)
        return;

    if (!time_to_restore)
        time_to_restore = GetGOInfo()->GetAutoCloseTime();

    SwitchDoorOrButton(true, alternative);
    SetLootState(GO_ACTIVATED, user);

    m_cooldownTime = GameTime::GetGameTimeMS().count() + time_to_restore;
}

void GameObject::SetGoArtKit(uint8 kit)
{
    SetByteValue(GAMEOBJECT_BYTES_1, 2, kit);
    GameObjectData* data = const_cast<GameObjectData*>(sObjectMgr->GetGameObjectData(m_spawnId));
    if (data)
        data->artKit = kit;
}

void GameObject::SetGoArtKit(uint8 artkit, GameObject* go, ObjectGuid::LowType lowguid)
{
    const GameObjectData* data = nullptr;
    if (go)
    {
        go->SetGoArtKit(artkit);
        data = go->GetGameObjectData();
    }
    else if (lowguid)
        data = sObjectMgr->GetGameObjectData(lowguid);

    if (data)
        const_cast<GameObjectData*>(data)->artKit = artkit;
}

void GameObject::SwitchDoorOrButton(bool activate, bool alternative /* = false */)
{
    if (activate)
        SetGameObjectFlag(GO_FLAG_IN_USE);
    else
        RemoveGameObjectFlag(GO_FLAG_IN_USE);

    if (GetGoState() == GO_STATE_READY)                      //if closed -> open
        SetGoState(alternative ? GO_STATE_ACTIVE_ALTERNATIVE : GO_STATE_ACTIVE);
    else                                                    //if open -> close
        SetGoState(GO_STATE_READY);
}

void GameObject::Use(Unit* user)
{
    // Xinef: we cannot use go with not selectable flags
    if (HasGameObjectFlag(GO_FLAG_NOT_SELECTABLE))
        return;

    // by default spell caster is user
    Unit* spellCaster = user;
    uint32 spellId = 0;
    uint32 triggeredFlags = TRIGGERED_NONE;

    if (Player* playerUser = user->ToPlayer())
    {
        if (sScriptMgr->OnGossipHello(playerUser, this))
            return;

        if (AI()->GossipHello(playerUser, false))
            return;
    }

    // If cooldown data present in template
    if (uint32 cooldown = GetGOInfo()->GetCooldown())
    {
        if (GameTime::GetGameTimeMS().count() < m_cooldownTime)
            return;

        m_cooldownTime = GameTime::GetGameTimeMS().count() + cooldown * IN_MILLISECONDS;
    }

    if (user->IsPlayer() && GetGoType() != GAMEOBJECT_TYPE_TRAP) // workaround for GO casting
        if (!m_goInfo->IsUsableMounted())
            user->RemoveAurasByType(SPELL_AURA_MOUNTED);

    switch (GetGoType())
    {
        case GAMEOBJECT_TYPE_DOOR:                          //0
            //doors/buttons never really despawn, only reset to default state/flags
            UseDoorOrButton(0, false, user);
            return;
        case GAMEOBJECT_TYPE_BUTTON:                        //1
            //doors/buttons never really despawn, only reset to default state/flags
            UseDoorOrButton(0, false, user);

            // Xinef: properly link possible traps
            if (uint32 trapEntry = GetGOInfo()->button.linkedTrap)
                TriggeringLinkedGameObject(trapEntry, user);
            return;
        case GAMEOBJECT_TYPE_QUESTGIVER:                    //2
            {
                if (!user->IsPlayer())
                    return;

                Player* player = user->ToPlayer();

                player->PrepareGossipMenu(this, GetGOInfo()->questgiver.gossipID, true);
                player->SendPreparedGossip(this);
                return;
            }
        case GAMEOBJECT_TYPE_TRAP:                          //6
            {
                GameObjectTemplate const* goInfo = GetGOInfo();
                if (goInfo->trap.spellId)
                    CastSpell(user, goInfo->trap.spellId);

                m_cooldownTime = GameTime::GetGameTimeMS().count() + (goInfo->trap.cooldown ? goInfo->trap.cooldown :  uint32(4)) * IN_MILLISECONDS; // template or 4 seconds

                if (goInfo->trap.type == 1)         // Deactivate after trigger
                    SetLootState(GO_JUST_DEACTIVATED);

                return;
            }
        //Sitting: Wooden bench, chairs enzz
        case GAMEOBJECT_TYPE_CHAIR:                         //7
            {
                GameObjectTemplate const* info = GetGOInfo();
                if (!info)
                    return;

                if (!user->IsPlayer())
                    return;

                if (ChairListSlots.empty())        // this is called once at first chair use to make list of available slots
                {
                    if (info->chair.slots > 0)     // sometimes chairs in DB have error in fields and we dont know number of slots
                        for (uint32 i = 0; i < info->chair.slots; ++i)
                            ChairListSlots[i].Clear(); // Last user of current slot set to 0 (none sit here yet)
                    else
                        ChairListSlots[0].Clear();     // error in DB, make one default slot
                }

                Player* player = user->ToPlayer();

                // a chair may have n slots. we have to calculate their positions and teleport the player to the nearest one

                float lowestDist = DEFAULT_VISIBILITY_DISTANCE;

                uint32 nearest_slot = 0;
                float x_lowest = GetPositionX();
                float y_lowest = GetPositionY();

                // the object orientation + 1/2 pi
                // every slot will be on that straight line
                float orthogonalOrientation = GetOrientation() + M_PI * 0.5f;
                // find nearest slot
                bool found_free_slot = false;
                for (ChairSlotAndUser::iterator itr = ChairListSlots.begin(); itr != ChairListSlots.end(); ++itr)
                {
                    // the distance between this slot and the center of the go - imagine a 1D space
                    float relativeDistance = (info->size * itr->first) - (info->size * (info->chair.slots - 1) / 2.0f);

                    float x_i = GetPositionX() + relativeDistance * cos(orthogonalOrientation);
                    float y_i = GetPositionY() + relativeDistance * std::sin(orthogonalOrientation);

                    if (itr->second)
                    {
                        if (Player* ChairUser = ObjectAccessor::GetPlayer(*this, itr->second))
                        {
                            if (ChairUser->IsSitState() && ChairUser->getStandState() != UNIT_STAND_STATE_SIT && ChairUser->GetExactDist2d(x_i, y_i) < 0.1f)
                                continue;        // This seat is already occupied by ChairUser. NOTE: Not sure if the ChairUser->getStandState() != UNIT_STAND_STATE_SIT check is required.
                            else
                                itr->second.Clear(); // This seat is unoccupied.
                        }
                        else
                            itr->second.Clear();     // The seat may of had an occupant, but they're offline.
                    }

                    found_free_slot = true;

                    // calculate the distance between the player and this slot
                    float thisDistance = player->GetDistance2d(x_i, y_i);

                    if (thisDistance <= lowestDist)
                    {
                        nearest_slot = itr->first;
                        lowestDist = thisDistance;
                        x_lowest = x_i;
                        y_lowest = y_i;
                    }
                }

                if (found_free_slot)
                {
                    ChairSlotAndUser::iterator itr = ChairListSlots.find(nearest_slot);
                    if (itr != ChairListSlots.end())
                    {
                        itr->second = player->GetGUID(); //this slot in now used by player
                        player->TeleportTo(GetMapId(), x_lowest, y_lowest, GetPositionZ(), GetOrientation(), TELE_TO_NOT_LEAVE_TRANSPORT | TELE_TO_NOT_LEAVE_COMBAT | TELE_TO_NOT_UNSUMMON_PET);
                        player->SetStandState(UNIT_STAND_STATE_SIT_LOW_CHAIR + info->chair.height);
                        return;
                    }
                }

                return;
            }
        //big gun, its a spell/aura
        case GAMEOBJECT_TYPE_GOOBER:                        //10
            {
                GameObjectTemplate const* info = GetGOInfo();

                // xinef: Goober cannot be used with this flag, skip
                if (HasGameObjectFlag(GO_FLAG_IN_USE))
                    return;

                if (user->IsPlayer())
                {
                    Player* player = user->ToPlayer();

                    if (info->goober.pageId)                    // show page...
                    {
                        WorldPacket data(SMSG_GAMEOBJECT_PAGETEXT, 8);
                        data << GetGUID();
                        player->SendDirectMessage(&data);
                    }
                    else if (info->goober.gossipID)
                    {
                        player->PrepareGossipMenu(this, info->goober.gossipID);
                        player->SendPreparedGossip(this);
                    }

                    if (info->goober.eventId)
                    {
                        LOG_DEBUG("maps.script", "Goober ScriptStart id {} for GO entry {} (spawnId {}).", info->goober.eventId, GetEntry(), m_spawnId);
                        GetMap()->ScriptsStart(sEventScripts, info->goober.eventId, player, this);
                        EventInform(info->goober.eventId);
                    }

                    // possible quest objective for active quests
                    if (info->goober.questId && sObjectMgr->GetQuestTemplate(info->goober.questId))
                    {
                        //Quest require to be active for GO using
                        if (player->GetQuestStatus(info->goober.questId) != QUEST_STATUS_INCOMPLETE)
                            break;
                    }

                    if (Battleground* bg = player->GetBattleground())
                        bg->EventPlayerUsedGO(player, this);

                    if (Group* group = player->GetGroup())
                    {
                        for (GroupReference const* itr = group->GetFirstMember(); itr != nullptr; itr = itr->next())
                        {
                            if (Player* member = itr->GetSource())
                            {
                                if (member->IsAtGroupRewardDistance(this))
                                {
                                    member->KillCreditGO(info->entry, GetGUID());
                                }
                            }
                        }
                    }
                    else
                    {
                        player->KillCreditGO(info->entry, GetGUID());
                    }
                }

                if (uint32 trapEntry = info->goober.linkedTrapId)
                    TriggeringLinkedGameObject(trapEntry, user);

                if (info->GetAutoCloseTime())
                {
                    SetGameObjectFlag(GO_FLAG_IN_USE);
                    SetLootState(GO_ACTIVATED, user);
                    if (!info->goober.customAnim)
                        SetGoState(GO_STATE_ACTIVE);
                }

                // this appear to be ok, however others exist in addition to this that should have custom (ex: 190510, 188692, 187389)
                if (info->goober.customAnim)
                    SendCustomAnim(GetGoAnimProgress());

                m_cooldownTime = GameTime::GetGameTimeMS().count() + info->GetAutoCloseTime();

                // cast this spell later if provided
                spellId = info->goober.spellId;
                spellCaster = user;

                break;
            }
        case GAMEOBJECT_TYPE_CAMERA:                        //13
            {
                GameObjectTemplate const* info = GetGOInfo();
                if (!info)
                    return;

                if (!user->IsPlayer())
                    return;

                Player* player = user->ToPlayer();

                if (info->camera.cinematicId)
                    player->SendCinematicStart(info->camera.cinematicId);

                if (info->camera.eventID)
                {
                    GetMap()->ScriptsStart(sEventScripts, info->camera.eventID, player, this);
                    EventInform(info->camera.eventID);
                }

                return;
            }
        //fishing bobber
        case GAMEOBJECT_TYPE_FISHINGNODE:                   //17
            {
                Player* player = user->ToPlayer();
                if (!player)
                    return;

                if (player->GetGUID() != GetOwnerGUID())
                    return;

                switch (getLootState())
                {
                    case GO_READY:                              // ready for loot
                        {
                            uint32 zone, subzone;
                            GetZoneAndAreaId(zone, subzone);

                            int32 zoneSkill = sObjectMgr->GetFishingBaseSkillLevel(subzone);
                            if (!zoneSkill)
                                zoneSkill = sObjectMgr->GetFishingBaseSkillLevel(zone);

                            //provide error, no fishable zone or area should be 0
                            if (!zoneSkill)
                                LOG_ERROR("sql.sql", "Fishable areaId {} are not properly defined in `skill_fishing_base_level`.", subzone);

                            // no miss skill is zone skill + 95 since at least patch 2.1
                            int32 const noMissSkill = zoneSkill + 95;

                            int32 const skill = player->GetSkillValue(SKILL_FISHING);

                            int32 chance;
                            // fishing pool catches are 100%
                            //TODO: find reasonable value for fishing hole search
                            GameObject* fishingHole = LookupFishingHoleAround(20.0f + CONTACT_DISTANCE);
                            if (fishingHole)
                                chance = 100;
                            else if (skill < noMissSkill)
                            {
                                chance = int32(pow((double)skill / noMissSkill, 2) * 100);
                                if (chance < 1)
                                    chance = 1;
                            }
                            else
                                chance = 100;

                            int32 const roll = irand(1, 100);

                            LOG_DEBUG("entities.gameobject", "Fishing check (skill: {} zone min skill: {} no-miss skill: {} chance {} roll: {})", skill, zoneSkill, noMissSkill, chance, roll);

                            if (sScriptMgr->OnPlayerUpdateFishingSkill(player, skill, zoneSkill, chance, roll))
                                player->UpdateFishingSkill();
                            // but you will likely cause junk in areas that require a high fishing skill (not yet implemented)
                            if (chance >= roll)
                            {
                                //TODO: I do not understand this hack. Need some explanation.
                                // prevent removing GO at spell cancel
                                RemoveFromOwner();
                                SetOwnerGUID(player->GetGUID());
                                SetSpellId(0); // prevent removing unintended auras at Unit::RemoveGameObject

                                // fishing pool catch
                                if (fishingHole)
                                {
                                    fishingHole->Use(player);
                                    SetLootState(GO_JUST_DEACTIVATED);
                                }
                                else
                                    player->SendLoot(GetGUID(), LOOT_FISHING);
                            }
                            else // else: junk
                                player->SendLoot(GetGUID(), LOOT_FISHING_JUNK);
                            break;
                        }
                    case GO_JUST_DEACTIVATED:                   // nothing to do, will be deleted at next update
                        break;
                    default:
                        {
                            SetLootState(GO_JUST_DEACTIVATED);

                            WorldPacket data(SMSG_FISH_NOT_HOOKED, 0);
                            player->SendDirectMessage(&data);
                            break;
                        }
                }
                player->FinishSpell(CURRENT_CHANNELED_SPELL, true);
                return;
            }

        case GAMEOBJECT_TYPE_SUMMONING_RITUAL:              //18
            {
                if (!user->IsPlayer())
                    return;

                Player* player = user->ToPlayer();
                Unit* owner = GetOwner();
                GameObjectTemplate const* info = GetGOInfo();

                // ritual owner is set for GO's without owner (not summoned)
                if (!m_ritualOwnerGUID && !owner)
                    m_ritualOwnerGUID = player->GetGUID();

                if (owner)
                {
                    if (!owner->IsPlayer())
                        return;

                    // accept only use by player from same group as owner, excluding owner itself (unique use already added in spell effect)
                    if (player == owner->ToPlayer() || (info->summoningRitual.castersGrouped && !player->IsInSameRaidWith(owner->ToPlayer())))
                        return;

                    // expect owner to already be channeling, so if not...
                    if (!owner->GetCurrentSpell(CURRENT_CHANNELED_SPELL))
                        return;
                }
                else
                {
                    Player* ritualOwner = ObjectAccessor::GetPlayer(*this, m_ritualOwnerGUID);
                    if (!ritualOwner)
                        return;
                    if (player != ritualOwner && (info->summoningRitual.castersGrouped && !player->IsInSameRaidWith(ritualOwner)))
                        return;
                }

                CheckRitualList();

                if (GetUniqueUseCount() == info->summoningRitual.reqParticipants)
                    return;

                if (info->summoningRitual.animSpell)
                    player->CastSpell(player, info->summoningRitual.animSpell, true);
                else
                    player->CastSpell(player, GetSpellId(),
                        TriggerCastFlags(TRIGGERED_IGNORE_EFFECTS
                                       | TRIGGERED_IGNORE_POWER_AND_REAGENT_COST
                                       | TRIGGERED_CAST_DIRECTLY));

                AddUniqueUse(player);

                // full amount unique participants including original summoner
                if (GetUniqueUseCount() == info->summoningRitual.reqParticipants)
                {
                    SetLootState(GO_NOT_READY);

                    // channel ready, maintain this
                    m_cooldownTime = GameTime::GetGameTimeMS().count() + 5 * IN_MILLISECONDS;
                }

                return;
            }
        case GAMEOBJECT_TYPE_SPELLCASTER:                   //22
            {
                GameObjectTemplate const* info = GetGOInfo();
                if (!info)
                    return;

                if (info->spellcaster.partyOnly)
                {
                    if (!user->IsPlayer())
                        return;
                    if (ObjectGuid ownerGuid = GetOwnerGUID())
                    {
                        if (user->GetGUID() != ownerGuid)
                        {
                            Group* group = user->ToPlayer()->GetGroup();
                            if (!group)
                                return;
                            if (!group->IsMember(ownerGuid))
                                return;
                        }
                    }
                }

                spellId = info->spellcaster.spellId;
                break;
            }
        case GAMEOBJECT_TYPE_MEETINGSTONE:                  //23
            {
                GameObjectTemplate const* info = GetGOInfo();

                if (!user->IsPlayer())
                    return;

                Player* player = user->ToPlayer();

                Player* targetPlayer = ObjectAccessor::FindPlayer(player->GetTarget());

                // accept only use by player from same raid as caster
                if (!targetPlayer || !targetPlayer->IsInSameRaidWith(player))
                    return;

                //required lvl checks!
                uint8 level = player->GetLevel();
                if (level < info->meetingstone.minLevel)
                    return;
                level = targetPlayer->GetLevel();
                if (level < info->meetingstone.minLevel)
                    return;

                spellId = 23598;                            // Meeting Stone Summon

                break;
            }

        case GAMEOBJECT_TYPE_FLAGSTAND:                     // 24
            {
                if (!user->IsPlayer())
                    return;

                Player* player = user->ToPlayer();

                if (player->CanUseBattlegroundObject(this))
                {
                    // in battleground check
                    Battleground* bg = player->GetBattleground();
                    if (!bg)
                        return;

                    if (player->GetVehicle())
                        return;

                    player->RemoveAurasByType(SPELL_AURA_MOD_STEALTH);
                    player->RemoveAurasByType(SPELL_AURA_MOD_INVISIBILITY);
                    // BG flag click
                    // AB:
                    // 15001
                    // 15002
                    // 15003
                    // 15004
                    // 15005
                    bg->EventPlayerClickedOnFlag(player, this);
                    return;                                     //we don;t need to delete flag ... it is despawned!
                }
                break;
            }

        case GAMEOBJECT_TYPE_FISHINGHOLE:                   // 25
            {
                if (!user->IsPlayer())
                    return;

                Player* player = user->ToPlayer();

                player->SendLoot(GetGUID(), LOOT_FISHINGHOLE);
                player->UpdateAchievementCriteria(ACHIEVEMENT_CRITERIA_TYPE_FISH_IN_GAMEOBJECT, GetGOInfo()->entry);
                return;
            }

        case GAMEOBJECT_TYPE_FLAGDROP:                      // 26
            {
                if (!user->IsPlayer())
                    return;

                Player* player = user->ToPlayer();

                if (player->CanUseBattlegroundObject(this))
                {
                    // in battleground check
                    Battleground* bg = player->GetBattleground();
                    if (!bg)
                        return;

                    if (player->GetVehicle())
                        return;

                    player->RemoveAurasByType(SPELL_AURA_MOD_STEALTH);
                    player->RemoveAurasByType(SPELL_AURA_MOD_INVISIBILITY);
                    // BG flag dropped
                    // WS:
                    // 179785 - Silverwing Flag
                    // 179786 - Warsong Flag
                    // EotS:
                    // 184142 - Netherstorm Flag
                    GameObjectTemplate const* info = GetGOInfo();
                    if (info)
                    {
                        if (GameObject::gameObjectToEventFlag.find(info->entry) != GameObject::gameObjectToEventFlag.end())
                        {
                            GameObject::gameObjectToEventFlag[info->entry](player, this, bg);
                        }
                        else
                        {
                            switch (info->entry)
                            {
                                case 179785:                        // Silverwing Flag
                                case 179786:                        // Warsong Flag
                                    if (bg->GetBgTypeID(true) == BATTLEGROUND_WS)
                                        bg->EventPlayerClickedOnFlag(player, this);
                                    break;
                                case 184142:                        // Netherstorm Flag
                                    if (bg->GetBgTypeID(true) == BATTLEGROUND_EY)
                                        bg->EventPlayerClickedOnFlag(player, this);
                                    break;
                            }
                        }
                    }
                    //this cause to call return, all flags must be deleted here!!
                    spellId = 0;
                    Delete();
                }
                break;
            }
        case GAMEOBJECT_TYPE_BARBER_CHAIR:                  //32
            {
                GameObjectTemplate const* info = GetGOInfo();
                if (!info)
                    return;

                if (!user->IsPlayer())
                    return;

                Player* player = user->ToPlayer();

                // fallback, will always work
                player->TeleportTo(GetMapId(), GetPositionX(), GetPositionY(), GetPositionZ(), GetOrientation(), TELE_TO_NOT_LEAVE_TRANSPORT | TELE_TO_NOT_LEAVE_COMBAT | TELE_TO_NOT_UNSUMMON_PET);

                WorldPacket data(SMSG_ENABLE_BARBER_SHOP, 0);
                player->SendDirectMessage(&data);

                player->SetStandState(UNIT_STAND_STATE_SIT_LOW_CHAIR + info->barberChair.chairheight);
                return;
            }
        default:
            if (GetGoType() >= MAX_GAMEOBJECT_TYPE)
                LOG_ERROR("entities.gameobject", "GameObject::Use(): unit ({}, name: {}) tries to use object ({}, name: {}) of unknown type ({})",
                               user->GetGUID().ToString(), user->GetName(), GetGUID().ToString(),  GetGOInfo()->name, GetGoType());
            break;
    }

    if (!spellId)
        return;

    SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellId);
    if (!spellInfo)
    {
        if (!user->IsPlayer() || !sOutdoorPvPMgr->HandleCustomSpell(user->ToPlayer(), spellId, this))
            LOG_ERROR("entities.gameobject", "WORLD: unknown spell id {} at use action for gameobject (Entry: {} GoType: {})", spellId, GetEntry(), GetGoType());
        else
            LOG_DEBUG("outdoorpvp", "WORLD: {} non-dbc spell was handled by OutdoorPvP", spellId);
        return;
    }

    if (m_goInfo->IsUsableMounted())
        triggeredFlags |= TRIGGERED_IGNORE_CASTER_MOUNTED_OR_ON_VEHICLE;

    if (Player* player = user->ToPlayer())
        sOutdoorPvPMgr->HandleCustomSpell(player, spellId, this);

    if (spellCaster)
    {
        if ((spellCaster->CastSpell(user, spellInfo, TriggerCastFlags(triggeredFlags)) == SPELL_CAST_OK) && GetGoType() == GAMEOBJECT_TYPE_SPELLCASTER)
            AddUse();
    }
    else
        CastSpell(user, spellId);
}

void GameObject::CastSpell(Unit* target, uint32 spellId)
{
    SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellId);
    if (!spellInfo)
        return;

    bool self = true;
    for (uint8 i = 0; i < MAX_SPELL_EFFECTS; ++i)
    {
        if (spellInfo->Effects[i].TargetA.GetReferenceType() != TARGET_REFERENCE_TYPE_CASTER || spellInfo->Effects[i].TargetB.GetTarget())
        {
            self = false;
            break;
        }
    }

    if (self && target && target->GetGUID() != GetGUID())
    {
        target->CastSpell(target, spellInfo, true);
        return;
    }

    //summon world trigger
    Creature* trigger = SummonTrigger(GetPositionX(), GetPositionY(), GetPositionZ(), 0, spellInfo->CalcCastTime() + 2000, true);
    if (!trigger)
        return;

    if (Unit* owner = GetOwner())
    {
        trigger->SetLevel(owner->GetLevel(), false);
        trigger->SetFaction(owner->GetFaction());
        // needed for GO casts for proper target validation checks
        trigger->SetOwnerGUID(owner->GetGUID());
        // xinef: fixes some duel bugs with traps]
        if (owner->HasUnitFlag(UNIT_FLAG_PLAYER_CONTROLLED))
            trigger->SetUnitFlag(UNIT_FLAG_PLAYER_CONTROLLED);
        if (owner->IsFFAPvP())
        {
            if (!trigger->HasByteFlag(UNIT_FIELD_BYTES_2, 1, UNIT_BYTE2_FLAG_FFA_PVP))
            {
                sScriptMgr->OnFfaPvpStateUpdate(trigger, true);
                trigger->SetByteFlag(UNIT_FIELD_BYTES_2, 1, UNIT_BYTE2_FLAG_FFA_PVP);
            }

        }
        // xinef: Remove Immunity flags
        trigger->SetImmuneToNPC(false);
        // xinef: set proper orientation, fixes cast against stealthed targets
        if (target)
            trigger->SetInFront(target);
        trigger->CastSpell(target ? target : trigger, spellInfo, true, 0, 0, owner->GetGUID());
    }
    else
    {
        // xinef: set faction of gameobject, if no faction - assume hostile
        trigger->SetFaction(GetTemplateAddon() && GetTemplateAddon()->faction ? GetTemplateAddon()->faction : 14);
        // Set owner guid for target if no owner availble - needed by trigger auras
        // - trigger gets despawned and there's no caster avalible (see AuraEffect::TriggerSpell())
        // xinef: set proper orientation, fixes cast against stealthed targets
        if (target)
            trigger->SetInFront(target);
        trigger->CastSpell(target ? target : trigger, spellInfo, true, 0, 0, target ? target->GetGUID() : ObjectGuid::Empty);
    }
}

void GameObject::SendCustomAnim(uint32 anim)
{
    WorldPacket data(SMSG_GAMEOBJECT_CUSTOM_ANIM, 8 + 4);
    data << GetGUID();
    data << uint32(anim);
    SendMessageToSet(&data, true);
}

bool GameObject::IsInRange(float x, float y, float z, float radius) const
{
    GameObjectDisplayInfoEntry const* info = sGameObjectDisplayInfoStore.LookupEntry(m_goInfo->displayId);
    if (!info)
        return IsWithinDist3d(x, y, z, radius);

    float sinA = std::sin(GetOrientation());
    float cosA = cos(GetOrientation());
    float dx = x - GetPositionX();
    float dy = y - GetPositionY();
    float dz = z - GetPositionZ();
    float dist = std::sqrt(dx * dx + dy * dy);
    //! Check if the distance between the 2 objects is 0, can happen if both objects are on the same position.
    //! The code below this check wont crash if dist is 0 because 0/0 in float operations is valid, and returns infinite
    if (G3D::fuzzyEq(dist, 0.0f))
        return true;

    float scale = GetObjectScale();
    float sinB = dx / dist;
    float cosB = dy / dist;
    dx = dist * (cosA * cosB + sinA * sinB);
    dy = dist * (cosA * sinB - sinA * cosB);
    return dx < (info->maxX * scale) + radius && dx > (info->minX * scale) - radius
           && dy < (info->maxY * scale) + radius && dy > (info->minY * scale) - radius
           && dz < (info->maxZ * scale) + radius && dz > (info->minZ * scale) - radius;
}

void GameObject::EventInform(uint32 eventId)
{
    if (!eventId)
        return;

    if (AI())
        AI()->EventInform(eventId);

    if (m_zoneScript)
        m_zoneScript->ProcessEvent(this, eventId);
}

uint32 GameObject::GetScriptId() const
{
    if (GameObjectData const* gameObjectData = GetGameObjectData())
        if (uint32 scriptId = gameObjectData->ScriptId)
            return scriptId;

    return GetGOInfo()->ScriptId;
}

// overwrite WorldObject function for proper name localization
std::string const& GameObject::GetNameForLocaleIdx(LocaleConstant loc_idx) const
{
    if (loc_idx != DEFAULT_LOCALE)
    {
        uint8 uloc_idx = uint8(loc_idx);
        if (GameObjectLocale const* cl = sObjectMgr->GetGameObjectLocale(GetEntry()))
            if (cl->Name.size() > uloc_idx && !cl->Name[uloc_idx].empty())
                return cl->Name[uloc_idx];
    }

    return GetName();
}

void GameObject::UpdatePackedRotation()
{
    static const int32 PACK_YZ = 1 << 20;
    static const int32 PACK_X = PACK_YZ << 1;
    static const int32 PACK_YZ_MASK = (PACK_YZ << 1) - 1;
    static const int32 PACK_X_MASK = (PACK_X << 1) - 1;
    int8 w_sign = (m_localRotation.w >= 0.f ? 1 : -1);
    int64 x = int32(m_localRotation.x * PACK_X)  * w_sign & PACK_X_MASK;
    int64 y = int32(m_localRotation.y * PACK_YZ) * w_sign & PACK_YZ_MASK;
    int64 z = int32(m_localRotation.z * PACK_YZ) * w_sign & PACK_YZ_MASK;
    m_packedRotation = z | (y << 21) | (x << 42);
}

void GameObject::SetLocalRotation(G3D::Quat const& rot)
{
    G3D::Quat rotation;
    // Temporary solution for gameobjects that have no rotation data in DB:
    if (G3D::fuzzyEq(rot.z, 0.f) && G3D::fuzzyEq(rot.w, 0.f))
        rotation = G3D::Quat::fromAxisAngleRotation(G3D::Vector3::unitZ(), GetOrientation());
    else
        rotation = rot;

    rotation.unitize();
    m_localRotation = rotation;
    UpdatePackedRotation();
}

void GameObject::SetTransportPathRotation(float qx, float qy, float qz, float qw)
{
    SetFloatValue(GAMEOBJECT_PARENTROTATION + 0, qx);
    SetFloatValue(GAMEOBJECT_PARENTROTATION + 1, qy);
    SetFloatValue(GAMEOBJECT_PARENTROTATION + 2, qz);
    SetFloatValue(GAMEOBJECT_PARENTROTATION + 3, qw);
}

void GameObject::SetLocalRotationAngles(float z_rot, float y_rot, float x_rot)
{
    SetLocalRotation(G3D::Quat(G3D::Matrix3::fromEulerAnglesZYX(z_rot, y_rot, x_rot)));
}

G3D::Quat GameObject::GetWorldRotation() const
{
    G3D::Quat localRotation = GetLocalRotation();
    if (Transport* transport = GetTransport())
    {
        G3D::Quat worldRotation = transport->GetWorldRotation();

        G3D::Quat worldRotationQuat(worldRotation.x, worldRotation.y, worldRotation.z, worldRotation.w);
        G3D::Quat localRotationQuat(localRotation.x, localRotation.y, localRotation.z, localRotation.w);

        G3D::Quat resultRotation = localRotationQuat * worldRotationQuat;

        return G3D::Quat(resultRotation.x, resultRotation.y, resultRotation.z, resultRotation.w);
    }
    return localRotation;
}

void GameObject::ModifyHealth(int32 change, Unit* attackerOrHealer /*= nullptr*/, uint32 spellId /*= 0*/)
{
    if (!IsDestructibleBuilding())
        return;

    // if this building doesn't have health, return
    if (!m_goValue.Building.MaxHealth)
        return;

    sScriptMgr->OnGameObjectModifyHealth(this, attackerOrHealer, change, sSpellMgr->GetSpellInfo(spellId));

    // if the health isn't being changed, return
    if (!change)
        return;

    if (!m_allowModifyDestructibleBuilding)
        change = 0;

    // prevent double destructions of the same object
    if (change < 0 && !m_goValue.Building.Health)
        return;

    if (int32(m_goValue.Building.Health) + change <= 0)
        m_goValue.Building.Health = 0;
    else if (int32(m_goValue.Building.Health) + change >= int32(m_goValue.Building.MaxHealth))
        m_goValue.Building.Health = m_goValue.Building.MaxHealth;
    else
        m_goValue.Building.Health += change;

    // Set the health bar, value = 255 * healthPct;
    SetGoAnimProgress(m_goValue.Building.Health * 255 / m_goValue.Building.MaxHealth);

    Player* player = attackerOrHealer->GetCharmerOrOwnerPlayerOrPlayerItself();

    // dealing damage, send packet
    /// @todo: is there any packet for healing?
    if (player)
    {
        WorldPacket data(SMSG_DESTRUCTIBLE_BUILDING_DAMAGE, 8 + 8 + 8 + 4 + 4);
        data << GetPackGUID();
        data << attackerOrHealer->GetPackGUID();
        data << player->GetPackGUID();
        data << uint32(-change);                    // change  < 0 triggers SPELL_BUILDING_HEAL combat log event
        // change >= 0 triggers SPELL_BUILDING_DAMAGE event
        data << uint32(spellId);
        player->SendDirectMessage(&data);
    }

    GameObjectDestructibleState newState = GetDestructibleState();

    if (!m_goValue.Building.Health)
        newState = GO_DESTRUCTIBLE_DESTROYED;
    else if (m_goValue.Building.Health <= GetGOInfo()->building.damagedNumHits)
        newState = GO_DESTRUCTIBLE_DAMAGED;
    else if (m_goValue.Building.Health == m_goValue.Building.MaxHealth)
        newState = GO_DESTRUCTIBLE_INTACT;

    if (newState == GetDestructibleState())
        return;

    SetDestructibleState(newState, player, false);
}

void GameObject::SetDestructibleState(GameObjectDestructibleState state, Player* eventInvoker /*= nullptr*/, bool setHealth /*= false*/)
{
    // the user calling this must know he is already operating on destructible gameobject
    ASSERT(GetGoType() == GAMEOBJECT_TYPE_DESTRUCTIBLE_BUILDING);

    switch (state)
    {
        case GO_DESTRUCTIBLE_INTACT:
            RemoveGameObjectFlag(GO_FLAG_DAMAGED | GO_FLAG_DESTROYED);
            SetDisplayId(m_goInfo->displayId);
            if (setHealth)
            {
                m_goValue.Building.Health = m_goValue.Building.MaxHealth;
                SetGoAnimProgress(255);
            }
            EnableCollision(true);
            break;
        case GO_DESTRUCTIBLE_DAMAGED:
            {
                EventInform(m_goInfo->building.damagedEvent);

                sScriptMgr->OnGameObjectDamaged(this, eventInvoker);

                if (BattlegroundMap* bgMap = GetMap()->ToBattlegroundMap())
                    if (Battleground* bg = bgMap->GetBG())
                        bg->EventPlayerDamagedGO(eventInvoker, this, m_goInfo->building.damagedEvent);

                RemoveGameObjectFlag(GO_FLAG_DESTROYED);
                SetGameObjectFlag(GO_FLAG_DAMAGED);

                uint32 modelId = m_goInfo->building.damagedDisplayId;
                if (DestructibleModelDataEntry const* modelData = sDestructibleModelDataStore.LookupEntry(m_goInfo->building.destructibleData))
                    if (modelData->DamagedDisplayId)
                        modelId = modelData->DamagedDisplayId;
                SetDisplayId(modelId);

                if (setHealth)
                {
                    m_goValue.Building.Health = m_goInfo->building.damagedNumHits;
                    uint32 maxHealth = m_goValue.Building.MaxHealth;
                    // in this case current health is 0 anyway so just prevent crashing here
                    if (!maxHealth)
                        maxHealth = 1;
                    SetGoAnimProgress(m_goValue.Building.Health * 255 / maxHealth);
                }
                break;
            }
        case GO_DESTRUCTIBLE_DESTROYED:
            {
                sScriptMgr->OnGameObjectDestroyed(this, eventInvoker);

                EventInform(m_goInfo->building.destroyedEvent);

                if (BattlegroundMap* bgMap = GetMap()->ToBattlegroundMap())
                {
                    if (Battleground* bg = bgMap->GetBG())
                    {
                        bg->EventPlayerDamagedGO(eventInvoker, this, m_goInfo->building.destroyedEvent);
                        bg->DestroyGate(eventInvoker, this);
                    }
                }

                RemoveGameObjectFlag(GO_FLAG_DAMAGED);
                SetGameObjectFlag(GO_FLAG_DESTROYED);

                uint32 modelId = m_goInfo->building.destroyedDisplayId;
                if (DestructibleModelDataEntry const* modelData = sDestructibleModelDataStore.LookupEntry(m_goInfo->building.destructibleData))
                    if (modelData->DestroyedDisplayId)
                        modelId = modelData->DestroyedDisplayId;
                SetDisplayId(modelId);

                if (setHealth)
                {
                    m_goValue.Building.Health = 0;
                    SetGoAnimProgress(0);
                }
                EnableCollision(false);
                break;
            }
        case GO_DESTRUCTIBLE_REBUILDING:
            {
                EventInform(m_goInfo->building.rebuildingEvent);
                RemoveGameObjectFlag(GO_FLAG_DAMAGED | GO_FLAG_DESTROYED);

                uint32 modelId = m_goInfo->displayId;
                if (DestructibleModelDataEntry const* modelData = sDestructibleModelDataStore.LookupEntry(m_goInfo->building.destructibleData))
                    if (modelData->RebuildingDisplayId)
                        modelId = modelData->RebuildingDisplayId;
                SetDisplayId(modelId);

                // restores to full health
                if (setHealth)
                {
                    m_goValue.Building.Health = m_goValue.Building.MaxHealth;
                    SetGoAnimProgress(255);
                }
                EnableCollision(true);
                break;
            }
    }
}

void GameObject::SetLootState(LootState state, Unit* unit)
{
    m_lootState = state;

    if (unit)
        _lootStateUnitGUID = unit->GetGUID();
    else
        _lootStateUnitGUID.Clear();

    AI()->OnStateChanged(state, unit);
    sScriptMgr->OnGameObjectLootStateChanged(this, state, unit);

    // Start restock timer if the chest is partially looted or not looted at all
    if (GetGoType() == GAMEOBJECT_TYPE_CHEST && state == GO_ACTIVATED && GetGOInfo()->chest.chestRestockTime > 0 && m_restockTime == 0s)
    {
        m_restockTime = GameTime::GetGameTime() + Seconds(GetGOInfo()->chest.chestRestockTime);
    }

    // pussywizard: lootState has nothing to do with collision, it depends entirely on GOState. Loot state is for timed close/open door and respawning, which then sets GOState
    /*if (m_model)
    {
        // startOpen determines whether we are going to add or remove the LoS on activation
        bool startOpen = (GetGoType() == GAMEOBJECT_TYPE_DOOR || GetGoType() == GAMEOBJECT_TYPE_BUTTON ? GetGOInfo()->door.startOpen : false);

        // Use the current go state
        if (GetGoState() == GO_STATE_ACTIVE)
            startOpen = !startOpen;

        if (state == GO_ACTIVATED || state == GO_JUST_DEACTIVATED)
            EnableCollision(startOpen);
        else if (state == GO_READY)
            EnableCollision(!startOpen);
    }*/
}

void GameObject::SetGoState(GOState state)
{
    SetByteValue(GAMEOBJECT_BYTES_1, 0, state);

    sScriptMgr->OnGameObjectStateChanged(this, state);

    if (m_model)
    {
        if (!IsInWorld())
            return;

        // pussywizard: this startOpen is unneeded here, collision depends entirely on current GOState
        EnableCollision(state == GO_STATE_READY || IsTransport());
        // pussywizard: commented out everything below

        // startOpen determines whether we are going to add or remove the LoS on activation
        /*bool startOpen = (GetGoType() == GAMEOBJECT_TYPE_DOOR || GetGoType() == GAMEOBJECT_TYPE_BUTTON ? GetGOInfo()->door.startOpen : false);

        if (GetGameObjectData() && GetGameObjectData()->go_state == GO_STATE_READY)
            startOpen = !startOpen;

        if (state == GO_STATE_ACTIVE || state == GO_STATE_ACTIVE_ALTERNATIVE)
            EnableCollision(startOpen);
        else if (state == GO_STATE_READY)
            EnableCollision(!startOpen);*/
    }
    /* Whenever a gameobject inside an instance changes
     * save it's state on the database to be loaded properly
     * on server restart or crash.
     */
    if (IsInstanceGameobject() && IsAllowedToSaveToDB())
    {
        SaveStateToDB();
    }
}

bool GameObject::IsInstanceGameobject() const
{
    // Avoid checking for unecessary gameobjects whose
    // states don't matter for the dungeon progression
    if (!ValidateGameobjectType())
    {
        return false;
    }

    if (auto* map = FindMap())
    {
        if (map->IsDungeon() || map->IsRaid())
        {
            return true;
        }
    }
    return false;
}

bool GameObject::ValidateGameobjectType() const
{
    switch (m_goInfo->type)
    {
        case GAMEOBJECT_TYPE_DOOR:
        case GAMEOBJECT_TYPE_BUTTON:
        case GAMEOBJECT_TYPE_TRAP:
        case GAMEOBJECT_TYPE_DESTRUCTIBLE_BUILDING:
        case GAMEOBJECT_TYPE_TRAPDOOR:
            return true;
        default:
            return false;
    }
}

uint8 GameObject::GameobjectStateToInt(GOState* state) const
{
    uint8 m_state = 3;

    if (state)
    {
        switch (*state)
        {
            case GO_STATE_ACTIVE:
                m_state = 0;
                return m_state;
            case GO_STATE_READY:
                m_state = 1;
                return m_state;
            case GO_STATE_ACTIVE_ALTERNATIVE:
                m_state = 2;
                return m_state;
        }
    }

    // Returning any value that is not one of the specified ones
    // Which will default into the invalid part of the switch
    return m_state;
}

void GameObject::SaveStateToDB()
{
    if (IsInstanceGameobject())
    {
        if (InstanceScript* instance = GetInstanceScript())
        {
            GOState param = GetGoState();
            instance->StoreGameObjectState(GetSpawnId(), GameobjectStateToInt(&param));

            CharacterDatabasePreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_INSERT_INSTANCE_SAVED_DATA);
            stmt->SetData(0, GetInstanceId());
            stmt->SetData(1, GetSpawnId());
            stmt->SetData(2, GameobjectStateToInt(&param));
            CharacterDatabase.Execute(stmt);
        }
    }
}

void GameObject::SetDisplayId(uint32 displayid)
{
    SetUInt32Value(GAMEOBJECT_DISPLAYID, displayid);
    UpdateModel();
}

void GameObject::SetPhaseMask(uint32 newPhaseMask, bool update)
{
    WorldObject::SetPhaseMask(newPhaseMask, update);

    if (m_model && m_model->isEnabled())
        EnableCollision(true);
}

void GameObject::EnableCollision(bool enable)
{
    if (!m_model)
        return;

    /*if (enable && !GetMap()->ContainsGameObjectModel(*m_model))
        GetMap()->InsertGameObjectModel(*m_model);*/

    uint32 phaseMask = 0;
    if (enable && !sDisableMgr->IsDisabledFor(DISABLE_TYPE_GO_LOS, GetEntry(), nullptr))
        phaseMask = GetPhaseMask();

    m_model->enable(phaseMask);
}

void GameObject::UpdateModel()
{
    if (!IsInWorld())
        return;
    if (m_model)
        if (GetMap()->ContainsGameObjectModel(*m_model))
            GetMap()->RemoveGameObjectModel(*m_model);
    delete m_model;
    m_model = CreateModel();
    if (m_model)
        GetMap()->InsertGameObjectModel(*m_model);
}

Player* GameObject::GetLootRecipient() const
{
    if (!m_lootRecipient)
        return nullptr;
    return ObjectAccessor::FindConnectedPlayer(m_lootRecipient);
}

Group* GameObject::GetLootRecipientGroup() const
{
    if (!m_lootRecipientGroup)
        return nullptr;
    return sGroupMgr->GetGroupByGUID(m_lootRecipientGroup);
}

void GameObject::SetLootRecipient(Creature* creature)
{
    // 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 (!creature)
    {
        m_lootRecipient.Clear();
        m_lootRecipientGroup = 0;
        ResetAllowedLooters();
        return;
    }

    m_lootRecipient = creature->GetLootRecipientGUID();
    m_lootRecipientGroup = creature->GetLootRecipientGroupGUID();
    SetAllowedLooters(creature->GetAllowedLooters());
}

void GameObject::SetLootRecipient(Map* map)
{
    Group* group = nullptr;
    Map::PlayerList const& PlayerList = map->GetPlayers();
    for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
    {
        if (Player* groupMember = i->GetSource())
        {
            if (groupMember->IsGameMaster() || groupMember->IsSpectator())
            {
                continue;
            }

            if (!m_lootRecipient)
            {
                m_lootRecipient = groupMember->GetGUID();
            }

            Group* memberGroup = groupMember->GetGroup();
            if (memberGroup && !group)
            {
                group = memberGroup;
                m_lootRecipientGroup = group->GetGUID().GetCounter();
            }

            if (memberGroup == group)
            {
                AddAllowedLooter(groupMember->GetGUID());
            }
        }
    }

    if (!group)
    {
        AddAllowedLooter(m_lootRecipient);
    }
}

bool GameObject::IsLootAllowedFor(Player const* player) const
{
    if (!m_lootRecipient && !m_lootRecipientGroup)
    {
        return true;
    }

    if (player->GetGUID() == m_lootRecipient)
    {
        return true;
    }

    if (player->HasPendingBind())
    {
        return false;
    }

    // if we dont have a group we arent the recipient
    // if go doesnt have group bound it means it was solo killed by someone else
    Group const* playerGroup = player->GetGroup();
    if (!playerGroup || playerGroup != GetLootRecipientGroup())
    {
        return false;
    }

    if (!HasAllowedLooter(player->GetGUID()))
    {
        return false;
    }

    return true;
}

GameObject* GameObject::GetLinkedTrap()
{
    return ObjectAccessor::GetGameObject(*this, m_linkedTrap);
}

void GameObject::BuildValuesUpdate(uint8 updateType, ByteBuffer* data, Player* target)
{
    if (!target)
        return;

    bool forcedFlags = GetGoType() == GAMEOBJECT_TYPE_CHEST && GetGOInfo()->chest.groupLootRules && HasLootRecipient();
    bool targetIsGM = target->IsGameMaster() && target->GetSession()->IsGMAccount();

    ByteBuffer fieldBuffer;

    UpdateMask updateMask;
    updateMask.SetCount(m_valuesCount);

    uint32* flags = GameObjectUpdateFieldFlags;
    uint32 visibleFlag = UF_FLAG_PUBLIC;
    if (GetOwnerGUID() == target->GetGUID())
        visibleFlag |= UF_FLAG_OWNER;

    for (uint16 index = 0; index < m_valuesCount; ++index)
    {
        if (_fieldNotifyFlags & flags[index] ||
                ((updateType == UPDATETYPE_VALUES ? _changesMask.GetBit(index) : m_uint32Values[index]) && (flags[index] & visibleFlag)) ||
                (index == GAMEOBJECT_FLAGS && forcedFlags))
        {
            updateMask.SetBit(index);

            if (index == GAMEOBJECT_DYNAMIC)
            {
                uint16 dynFlags = 0;
                int16 pathProgress = -1;
                switch (GetGoType())
                {
                    case GAMEOBJECT_TYPE_QUESTGIVER:
                        if (ActivateToQuest(target))
                            dynFlags |= GO_DYNFLAG_LO_ACTIVATE;
                        break;
                    case GAMEOBJECT_TYPE_CHEST:
                    case GAMEOBJECT_TYPE_GOOBER:
                        if (ActivateToQuest(target))
                        {
                            dynFlags |= GO_DYNFLAG_LO_ACTIVATE;
                            if (sWorld->getBoolConfig(CONFIG_OBJECT_SPARKLES))
                                dynFlags |= GO_DYNFLAG_LO_SPARKLE;
                        }
                        else if (targetIsGM)
                            dynFlags |= GO_DYNFLAG_LO_ACTIVATE;
                        break;
                    case GAMEOBJECT_TYPE_SPELL_FOCUS:
                    case GAMEOBJECT_TYPE_GENERIC:
                        if (ActivateToQuest(target) && sWorld->getBoolConfig(CONFIG_OBJECT_SPARKLES))
                            dynFlags |= GO_DYNFLAG_LO_SPARKLE;
                        break;
                    case GAMEOBJECT_TYPE_TRANSPORT:
                        if (const StaticTransport* t = ToStaticTransport())
                            if (t->GetPauseTime())
                            {
                                if (GetGoState() == GO_STATE_READY)
                                {
                                    if (t->GetPathProgress() >= t->GetPauseTime()) // if not, send 100% progress
                                        pathProgress = int16(float(t->GetPathProgress() - t->GetPauseTime()) / float(t->GetPeriod() - t->GetPauseTime()) * 65535.0f);
                                }
                                else
                                {
                                    if (t->GetPathProgress() <= t->GetPauseTime()) // if not, send 100% progress
                                        pathProgress = int16(float(t->GetPathProgress()) / float(t->GetPauseTime()) * 65535.0f);
                                }
                            }
                        // else it's ignored
                        break;
                    case GAMEOBJECT_TYPE_MO_TRANSPORT:
                        if (const MotionTransport* t = ToMotionTransport())
                            pathProgress = int16(float(t->GetPathProgress()) / float(t->GetPeriod()) * 65535.0f);
                        break;
                    default:
                        break;
                }

                fieldBuffer << uint16(dynFlags);
                fieldBuffer << int16(pathProgress);
            }
            else if (index == GAMEOBJECT_FLAGS)
            {
                uint32 goFlags = m_uint32Values[GAMEOBJECT_FLAGS];
                if (GetGoType() == GAMEOBJECT_TYPE_CHEST && GetGOInfo() && GetGOInfo()->chest.groupLootRules && !IsLootAllowedFor(target))
                {
                    goFlags |= GO_FLAG_LOCKED | GO_FLAG_NOT_SELECTABLE;
                }

                fieldBuffer << goFlags;
            }
            else
                fieldBuffer << m_uint32Values[index];                // other cases
        }
    }

    *data << uint8(updateMask.GetBlockCount());
    updateMask.AppendToPacket(data);
    data->append(fieldBuffer);
}

void GameObject::GetRespawnPosition(float& x, float& y, float& z, float* ori /* = nullptr*/) const
{
    if (m_spawnId)
    {
        if (GameObjectData const* data = sObjectMgr->GetGameObjectData(m_spawnId))
        {
            x = data->posX;
            y = data->posY;
            z = data->posZ;
            if (ori)
                *ori = data->orientation;
            return;
        }
    }

    x = GetPositionX();
    y = GetPositionY();
    z = GetPositionZ();
    if (ori)
        *ori = GetOrientation();
}

void GameObject::SetPosition(float x, float y, float z, float o)
{
    // pussywizard: do not call for MotionTransport and other gobjects not in grid

    if (!Acore::IsValidMapCoord(x, y, z, o))
        return;

    GetMap()->GameObjectRelocation(this, x, y, z, o);
}

float GameObject::GetInteractionDistance() const
{
    switch (GetGoType())
    {
        case GAMEOBJECT_TYPE_AREADAMAGE:
            return 0.0f;
        case GAMEOBJECT_TYPE_QUESTGIVER:
        case GAMEOBJECT_TYPE_TEXT:
        case GAMEOBJECT_TYPE_FLAGSTAND:
        case GAMEOBJECT_TYPE_FLAGDROP:
        case GAMEOBJECT_TYPE_MINI_GAME:
            return 5.5555553f;
        case GAMEOBJECT_TYPE_BINDER:
            return 10.0f;
        case GAMEOBJECT_TYPE_CHAIR:
        case GAMEOBJECT_TYPE_BARBER_CHAIR:
            return 3.0f;
        case GAMEOBJECT_TYPE_FISHINGNODE:
            return 100.0f;
        case GAMEOBJECT_TYPE_FISHINGHOLE:
            return 20.0f + CONTACT_DISTANCE; // max spell range
        case GAMEOBJECT_TYPE_CAMERA:
        case GAMEOBJECT_TYPE_MAP_OBJECT:
        case GAMEOBJECT_TYPE_DUNGEON_DIFFICULTY:
        case GAMEOBJECT_TYPE_DESTRUCTIBLE_BUILDING:
        case GAMEOBJECT_TYPE_DOOR:
            return 5.0f;
        // Following values are not blizzlike
        case GAMEOBJECT_TYPE_GUILD_BANK:
        case GAMEOBJECT_TYPE_MAILBOX:
            // Successful mailbox interaction is rather critical to the client, failing it will start a minute-long cooldown until the next mail query may be executed.
            // And since movement info update is not sent with mailbox interaction query, server may find the player outside of interaction range. Thus we increase it.
            return 10.0f; // 5.0f is blizzlike
        default:
            return INTERACTION_DISTANCE;
    }
}

void GameObject::UpdateModelPosition()
{
    if (!m_model)
        return;

    if (GetMap()->ContainsGameObjectModel(*m_model))
    {
        GetMap()->RemoveGameObjectModel(*m_model);
        m_model->UpdatePosition();
        GetMap()->InsertGameObjectModel(*m_model);
    }
}

time_t GameObject::GetRespawnTimeEx() const
{
    time_t now = GameTime::GetGameTime().count();
    if (m_respawnTime > now)
        return m_respawnTime;
    else
        return now;
}

void GameObject::SetLootGenerationTime()
{
    m_lootGenerationTime = GameTime::GetGameTime().count();
}

std::unordered_map<int, goEventFlag> GameObject::gameObjectToEventFlag = { };

class GameObjectModelOwnerImpl : public GameObjectModelOwnerBase
{
public:
    explicit GameObjectModelOwnerImpl(GameObject* owner) : _owner(owner) { }

    bool IsSpawned() const override { return _owner->isSpawned(); }
    uint32 GetDisplayId() const override { return _owner->GetDisplayId(); }
    uint32 GetPhaseMask() const override { return (_owner->GetGoState() == GO_STATE_READY || _owner->IsTransport()) ? _owner->GetPhaseMask() : 0; }
    G3D::Vector3 GetPosition() const override { return G3D::Vector3(_owner->GetPositionX(), _owner->GetPositionY(), _owner->GetPositionZ()); }
    float GetOrientation() const override { return _owner->GetOrientation(); }
    float GetScale() const override { return _owner->GetObjectScale(); }
    void DebugVisualizeCorner(G3D::Vector3 const& corner) const override { const_cast<GameObject*>(_owner)->SummonCreature(1, corner.x, corner.y, corner.z, 0.0f, TEMPSUMMON_TIMED_DESPAWN, 10000); }

private:
    GameObject* _owner;
};

GameObjectModel* GameObject::CreateModel()
{
    return GameObjectModel::Create(std::make_unique<GameObjectModelOwnerImpl>(this), sWorld->GetDataPath());
}

bool GameObject::IsAtInteractDistance(Player const* player, SpellInfo const* spell) const
{
    if (spell || (spell = GetSpellForLock(player)))
    {
        float maxRange = spell->GetMaxRange(spell->IsPositive());

        if (GetGoType() == GAMEOBJECT_TYPE_SPELL_FOCUS)
        {
            return maxRange * maxRange >= GetExactDistSq(player);
        }

        if (sGameObjectDisplayInfoStore.LookupEntry(GetGOInfo()->displayId))
        {
            return IsAtInteractDistance(*player, maxRange);
        }
    }

    return IsAtInteractDistance(*player, GetInteractionDistance());
}

bool GameObject::IsAtInteractDistance(Position const& pos, float radius) const
{
    if (GameObjectDisplayInfoEntry const* displayInfo = sGameObjectDisplayInfoStore.LookupEntry(GetGOInfo()->displayId))
    {
        float scale = GetObjectScale();

        float minX = displayInfo->minX * scale - radius;
        float minY = displayInfo->minY * scale - radius;
        float minZ = displayInfo->minZ * scale - radius;
        float maxX = displayInfo->maxX * scale + radius;
        float maxY = displayInfo->maxY * scale + radius;
        float maxZ = displayInfo->maxZ * scale + radius;

        G3D::Quat worldRotation = GetWorldRotation();
        G3D::Quat worldRotationQuat(worldRotation.x, worldRotation.y, worldRotation.z, worldRotation.w);

        return G3D::CoordinateFrame {{worldRotationQuat}, {GetPositionX(), GetPositionY(), GetPositionZ()}}.toWorldSpace(G3D::Box {{minX, minY, minZ}, {maxX, maxY, maxZ}}).contains({pos.GetPositionX(), pos.GetPositionY(), pos.GetPositionZ()});
    }

    return GetExactDist(&pos) <= radius;
}

bool GameObject::IsWithinDistInMap(Player const* player) const
{
    return IsInMap(player) && InSamePhase(player) && IsAtInteractDistance(player);
}

SpellInfo const* GameObject::GetSpellForLock(Player const* player) const
{
    if (!player)
    {
        return nullptr;
    }

    uint32 lockId = GetGOInfo()->GetLockId();
    if (!lockId)
    {
        return nullptr;
    }

    LockEntry const* lock = sLockStore.LookupEntry(lockId);
    if (!lock)
    {
        return nullptr;
    }

    for (uint8 i = 0; i < MAX_LOCK_CASE; ++i)
    {
        if (!lock->Type[i])
        {
            continue;
        }

        if (lock->Type[i] == LOCK_KEY_SPELL)
        {
            if (SpellInfo const* spell = sSpellMgr->GetSpellInfo(lock->Index[i]))
            {
                return spell;
            }
        }

        if (lock->Type[i] != LOCK_KEY_SKILL)
        {
            break;
        }

        for (auto&& playerSpell : player->GetSpellMap())
        {
            if (SpellInfo const* spell = sSpellMgr->GetSpellInfo(playerSpell.first))
            {
                for (auto&& effect : spell->Effects)
                {
                    if (effect.Effect == SPELL_EFFECT_OPEN_LOCK && ((uint32) effect.MiscValue) == lock->Index[i])
                    {
                        if (effect.CalcValue(player) >= int32(lock->Skill[i]))
                        {
                            return spell;
                        }
                    }
                }
            }
        }
    }

    return nullptr;
}

void GameObject::AddToSkillupList(ObjectGuid const& playerGuid)
{
    int32 timer = GetMap()->IsDungeon() ? -1 : 10 * MINUTE * IN_MILLISECONDS;
    m_SkillupList[playerGuid] = timer;
}

bool GameObject::IsInSkillupList(ObjectGuid const& playerGuid) const
{
    for (auto const& itr : m_SkillupList)
    {
        if (itr.first == playerGuid)
        {
            return true;
        }
    }

    return false;
}

std::string GameObject::GetDebugInfo() const
{
    std::stringstream sstr;
    sstr << WorldObject::GetDebugInfo() << "\n"
        << "SpawnId: " << GetSpawnId() << " GoState: " << std::to_string(GetGoState()) << " ScriptId: " << GetScriptId() << " AIName: " << GetAIName();
    return sstr.str();
}

// Note: This is called in a tight (heavy) loop, is it critical that all checks are FAST and are hopefully only simple conditionals.
bool GameObject::IsUpdateNeeded()
{
    if (WorldObject::IsUpdateNeeded())
        return true;

    if (GetMap()->isCellMarked(GetCurrentCell().GetCellCoord().GetId()))
        return true;

    if (!GetObjectVisibilityContainer().GetVisiblePlayersMap().empty())
        return true;

    if (IsTransport())
        return true;

    return false;
}