#include "ScriptedFollowerAI.h"

Inheritance diagram for FollowerAI:

Public Member Functions
	FollowerAI (Creature *creature)

	~FollowerAI () override

void	MovementInform (uint32 motionType, uint32 pointId) override

void	AttackStart (Unit *) override

void	MoveInLineOfSight (Unit *) override

void	EnterEvadeMode (EvadeReason=EVADE_REASON_OTHER) override

void	JustDied (Unit *) override

void	JustRespawned () override

void	UpdateAI (uint32) override
	Use to start attacking a target. Called just before JustEngagedWith() More...

virtual void	UpdateFollowerAI (uint32)

void	StartFollow (Player player, uint32 factionForFollower=0, const Quest quest=nullptr)

void	SetFollowPaused (bool bPaused)

void	SetFollowComplete (bool bWithEndEvent=false)

bool	HasFollowState (uint32 uiFollowState)

Public Member Functions inherited from ScriptedAI
	ScriptedAI (Creature *creature)

	~ScriptedAI () override

void	AttackStartNoMove (Unit *target)

void	DamageTaken (Unit *, uint32 &, DamageEffectType, SpellSchoolMask) override
	Called at any Damage from any attacker (before damage apply) More...

void	UpdateAI (uint32 diff) override
	Use to start attacking a target. Called just before JustEngagedWith() More...

void	JustDied (Unit *) override

void	KilledUnit (Unit *) override

void	JustSummoned (Creature *) override

void	SummonedCreatureDespawn (Creature *) override

void	SpellHit (Unit , SpellInfo const ) override

void	SpellHitTarget (Unit , SpellInfo const ) override

void	MovementInform (uint32, uint32) override

void	OnPossess (bool)

bool	IsInRoom (const Position *pos, Axis axis, bool above)

void	Reset () override

void	JustEngagedWith (Unit *) override
	Called for reaction when initially engaged. More...

void	AttackStart (Unit *) override

void	DoStartMovement (Unit *target, float distance=0.0f, float angle=0.0f)

void	DoStartNoMovement (Unit *target)

void	DoStopAttack ()

void	DoCastSpell (Unit target, SpellInfo const spellInfo, bool triggered=false)

void	DoPlaySoundToSet (WorldObject *source, uint32 soundId)

void	DoPlayMusic (uint32 soundId, bool zone)

void	DoAddThreat (Unit *unit, float amount)

void	DoModifyThreatByPercent (Unit *unit, int32 pct)

void	DoResetThreat (Unit *unit)

void	DoResetThreatList ()

float	DoGetThreat (Unit *unit)

void	DoTeleportPlayer (Unit *unit, float x, float y, float z, float o)

void	DoTeleportPlayer (Unit *unit, Position pos)

void	DoTeleportAll (float x, float y, float z, float o)

Unit *	DoSelectLowestHpFriendly (float range, uint32 minHPDiff=1)

std::list< Creature * >	DoFindFriendlyCC (float range)

std::list< Creature * >	DoFindFriendlyMissingBuff (float range, uint32 spellId)

Player *	GetPlayerAtMinimumRange (float minRange)

Creature *	DoSpawnCreature (uint32 entry, float offsetX, float offsetY, float offsetZ, float angle, uint32 type, uint32 despawntime)

bool	IsUniqueTimedEventDone (uint32 id) const

void	SetUniqueTimedEventDone (uint32 id)

void	ResetUniqueTimedEvent (uint32 id)

void	ClearUniqueTimedEventsDone ()

void	ScheduleTimedEvent (Milliseconds timerMin, Milliseconds timerMax, std::function< void()> exec, Milliseconds repeatMin, Milliseconds repeatMax=0s, uint32 uniqueId=0)

void	ScheduleTimedEvent (Milliseconds timerMax, std::function< void()> exec, Milliseconds repeatMin, Milliseconds repeatMax=0s, uint32 uniqueId=0)

void	ScheduleUniqueTimedEvent (Milliseconds timer, std::function< void()> exec, uint32 uniqueId)

bool	HealthBelowPct (uint32 pct) const

bool	HealthAbovePct (uint32 pct) const

SpellInfo const *	SelectSpell (Unit *target, uint32 school, uint32 mechanic, SelectTargetType targets, uint32 powerCostMin, uint32 powerCostMax, float rangeMin, float rangeMax, SelectEffect effect)

void	SetEquipmentSlots (bool loadDefault, int32 mainHand=EQUIP_NO_CHANGE, int32 offHand=EQUIP_NO_CHANGE, int32 ranged=EQUIP_NO_CHANGE)

virtual bool	CheckEvadeIfOutOfCombatArea () const

bool	IsHeroic () const

Difficulty	GetDifficulty () const

bool	Is25ManRaid () const

template<class T >
const T &	DUNGEON_MODE (const T &normal5, const T &heroic10) const

template<class T >
const T &	RAID_MODE (const T &normal10, const T &normal25) const

template<class T >
const T &	RAID_MODE (const T &normal10, const T &normal25, const T &heroic10, const T &heroic25) const

Player *	SelectTargetFromPlayerList (float maxdist, uint32 excludeAura=0, bool mustBeInLOS=false) const

Public Member Functions inherited from CreatureAI
void	Talk (uint8 id, WorldObject const *whisperTarget=nullptr, Milliseconds delay=0s)
	Causes the creature to talk/say the text assigned to their entry in the `creature_text` database table. More...

void	Talk (uint8 id, Milliseconds delay)

	CreatureAI (Creature *creature)

	~CreatureAI () override

void	MoveCircleChecks ()

void	MoveBackwardsChecks ()

void	MoveInLineOfSight_Safe (Unit *who)
	== Reactions At ================================= More...

void	TriggerAlert (Unit const *who) const

virtual bool	CanRespawn ()

virtual void	EnterEvadeMode (EvadeReason why=EVADE_REASON_OTHER)

virtual void	JustEngagedWith (Unit *)
	Called for reaction when initially engaged. More...

virtual void	JustDied (Unit *)

virtual void	KilledUnit (Unit *)

virtual void	JustSummoned (Creature *)

virtual void	IsSummonedBy (WorldObject *)

virtual void	SummonedCreatureDespawn (Creature *)

virtual void	SummonedCreatureDies (Creature , Unit )

virtual void	SummonedCreatureDespawnAll ()

virtual void	SummonedCreatureEvade (Creature *)

virtual void	SpellHit (Unit , SpellInfo const )

virtual void	SpellHitTarget (Unit , SpellInfo const )

virtual void	AttackedBy (Unit *)

virtual bool	IsEscorted ()

virtual void	JustRespawned ()

virtual void	MovementInform (uint32, uint32)

virtual void	PathEndReached (uint32)

void	OnCharmed (bool apply) override
	Called when unit is charmed. More...

virtual void	JustReachedHome ()

void	DoZoneInCombat (Creature *creature=nullptr, float maxRangeToNearestTarget=250.0f)

virtual void	ReceiveEmote (Player *, uint32)

virtual void	OwnerAttackedBy (Unit *)

virtual void	OwnerAttacked (Unit *)

virtual void	CorpseRemoved (uint32 &)
	== Triggered Actions Requested ================== More...

virtual void	PassengerBoarded (Unit *, int8, bool)
	== Fields ======================================= More...

virtual bool	BeforeSpellClick (Unit *)

virtual void	OnSpellClick (Unit *, bool &)

virtual bool	CanSeeAlways (WorldObject const *)

virtual bool	CanBeSeen (Player const *)

virtual bool	CanAlwaysBeDetectable (WorldObject const *)

virtual void	PetStopAttack ()

virtual bool	CheckInRoom ()

CreatureBoundary const *	GetBoundary () const

void	SetBoundary (CreatureBoundary const *boundary, bool negativeBoundaries=false)

bool	IsInBoundary (Position const *who=nullptr) const

virtual void	CalculateThreat (Unit , float &, SpellInfo const )

virtual bool	OnTeleportUnreacheablePlayer (Player *)

virtual void	OnAuraRemove (AuraApplication *, AuraRemoveMode)

Public Member Functions inherited from UnitAI
	UnitAI (Unit *unit)

virtual	~UnitAI ()

virtual bool	CanAIAttack (Unit const *) const

virtual void	AttackStart (Unit *)

virtual void	UpdateAI (uint32)=0
	Use to start attacking a target. Called just before JustEngagedWith() More...

virtual void	InitializeAI ()

virtual void	Reset ()

virtual void	OnCharmed (bool apply)=0
	Called when unit is charmed. More...

virtual void	DoAction (int32)

virtual uint32	GetData (uint32) const

virtual void	SetData (uint32, uint32)

virtual void	SetGUID (ObjectGuid, int32=0)

virtual ObjectGuid	GetGUID (int32=0) const

Unit *	SelectTarget (SelectTargetMethod targetType, uint32 position=0, float dist=0.0f, bool playerOnly=false, bool withTank=true, int32 aura=0)

template<class PREDICATE >
Unit *	SelectTarget (SelectTargetMethod targetType, uint32 position, PREDICATE const &predicate)

void	SelectTargetList (std::list< Unit * > &targetList, uint32 num, SelectTargetMethod targetType, uint32 position=0, float dist=0.0f, bool playerOnly=false, bool withTank=true, int32 aura=0)
	Select the best (up to) <num> targets (in <targetType> order) from the threat list that fulfill the following: More...

template<class PREDICATE >
void	SelectTargetList (std::list< Unit * > &targetList, uint32 num, SelectTargetMethod targetType, uint32 position, PREDICATE const &predicate)

virtual void	JustEnteredCombat (Unit *)
	Called when the unit enters combat. More...

virtual void	JustExitedCombat ()
	Called when the unit leaves combat. More...

virtual void	DamageDealt (Unit *, uint32 &, DamageEffectType)
	Called at any Damage to any victim (before damage apply) More...

virtual void	DamageTaken (Unit *, uint32 &, DamageEffectType, SpellSchoolMask)
	Called at any Damage from any attacker (before damage apply) More...

virtual void	HealReceived (Unit *, uint32 &)
	Called when the creature receives heal. More...

virtual void	OnPowerUpdate (Powers, int32, int32, uint32)
	Called when the creature power updates. More...

virtual void	HealDone (Unit *, uint32 &)
	Called when the unit heals. More...

virtual void	OnCalculateMeleeDamageReceived (uint32 &, Unit *)
	Called during damage calculations. More...

virtual void	OnCalculateSpellDamageReceived (int32 &, Unit *)

virtual void	OnCalculatePeriodicTickReceived (uint32 &, Unit *)
	Called during calculation when receiving periodic healing or damage (DoT or HoT) More...

void	AttackStartCaster (Unit *victim, float dist)

SpellCastResult	DoAddAuraToAllHostilePlayers (uint32 spellid)

SpellCastResult	DoCast (uint32 spellId)

SpellCastResult	DoCast (Unit *victim, uint32 spellId, bool triggered=false)

SpellCastResult	DoCastSelf (uint32 spellId, bool triggered=false)

SpellCastResult	DoCastToAllHostilePlayers (uint32 spellid, bool triggered=false)
	To specify the caster as target if the spell is self-cast. More...

SpellCastResult	DoCastVictim (uint32 spellId, bool triggered=false)

SpellCastResult	DoCastAOE (uint32 spellId, bool triggered=false)

SpellCastResult	DoCastRandomTarget (uint32 spellId, uint32 threatTablePosition=0, float dist=0.0f, bool playerOnly=true, bool triggered=false, bool withTank=true)
	Cast the spell on a random unit from the threat list. More...

SpellCastResult	DoCastMaxThreat (uint32 spellId, uint32 threatTablePosition=0, float dist=0.0f, bool playerOnly=true, bool triggered=false)
	Cast spell on the top threat target, which may not be the current victim. More...

float	DoGetSpellMaxRange (uint32 spellId, bool positive=false)

void	DoMeleeAttackIfReady ()

bool	DoSpellAttackIfReady (uint32 spell)

void	DoSpellAttackToRandomTargetIfReady (uint32 spell, uint32 threatTablePosition=0, float dist=0.f, bool playerOnly=true)

virtual void	SummonMovementInform (Creature *, uint32, uint32)
	Called when a summon reaches a waypoint or point movement finished. More...

virtual void	sGossipHello (Player *)

virtual void	sGossipSelect (Player *, uint32, uint32)

virtual void	sGossipSelectCode (Player , uint32, uint32, char const )

virtual void	sQuestAccept (Player , Quest const )

virtual void	sQuestSelect (Player , Quest const )

virtual void	sQuestComplete (Player , Quest const )

virtual void	sQuestReward (Player , Quest const , uint32)

virtual void	sOnGameEvent (bool, uint16)

virtual std::string	GetDebugInfo () const

Protected Member Functions
Player *	GetLeaderForFollower ()

Protected Member Functions inherited from CreatureAI
bool	UpdateVictim ()

bool	UpdateVictimWithGaze ()

void	SetGazeOn (Unit *target)

Creature *	DoSummon (uint32 entry, Position const &pos, uint32 despawnTime=30000, TempSummonType summonType=TEMPSUMMON_CORPSE_TIMED_DESPAWN)

Creature *	DoSummon (uint32 entry, WorldObject *obj, float radius=5.0f, uint32 despawnTime=30000, TempSummonType summonType=TEMPSUMMON_CORPSE_TIMED_DESPAWN)

Creature *	DoSummonFlyer (uint32 entry, WorldObject *obj, float flightZ, float radius=5.0f, uint32 despawnTime=30000, TempSummonType summonType=TEMPSUMMON_CORPSE_TIMED_DESPAWN)

virtual void	MoveInLineOfSight (Unit *)

bool	_EnterEvadeMode (EvadeReason why=EVADE_REASON_OTHER)

Private Member Functions
void	AddFollowState (uint32 uiFollowState)

void	RemoveFollowState (uint32 uiFollowState)

bool	AssistPlayerInCombatAgainst (Unit *who)

Private Attributes
ObjectGuid	m_uiLeaderGUID

uint32	m_uiUpdateFollowTimer

uint32	m_uiFollowState

const Quest *	m_pQuestForFollow

Additional Inherited Members
Public Types inherited from ScriptedAI
enum class	Axis { AXIS_X , AXIS_Y }

Public Types inherited from CreatureAI
enum	EvadeReason { EVADE_REASON_NO_HOSTILES , EVADE_REASON_BOUNDARY , EVADE_REASON_SEQUENCE_BREAK , EVADE_REASON_NO_PATH , EVADE_REASON_OTHER }

Static Public Member Functions inherited from CreatureAI
static bool	IsInBounds (CreatureBoundary const &boundary, Position const *who)

Static Public Member Functions inherited from UnitAI
static void	FillAISpellInfo ()

Public Attributes inherited from ScriptedAI
Creature *	me

Static Public Attributes inherited from UnitAI
static AISpellInfoType *	AISpellInfo

Protected Attributes inherited from CreatureAI
Creature *const	me

EventMap	events

TaskScheduler	scheduler

CreatureBoundary const *	_boundary

bool	_negateBoundary

Protected Attributes inherited from UnitAI
Unit *const	me

Detailed Description

Constructor & Destructor Documentation

◆ FollowerAI()

FollowerAI::FollowerAI ( Creature * creature )

explicit

                                         : ScriptedAI(creature),
    m_uiUpdateFollowTimer(2500),
    m_uiFollowState(STATE_FOLLOW_NONE),
    m_pQuestForFollow(nullptr)
{}

◆ ~FollowerAI()

FollowerAI::~FollowerAI ( )

inlineoverride

39{ }

Member Function Documentation

◆ AddFollowState()

void FollowerAI::AddFollowState ( uint32 uiFollowState )

inlineprivate

69{ m_uiFollowState |= uiFollowState; }

References m_uiFollowState.

Referenced by MovementInform(), SetFollowComplete(), SetFollowPaused(), and StartFollow().

◆ AssistPlayerInCombatAgainst()

bool FollowerAI::AssistPlayerInCombatAgainst ( Unit * who )

private

{
    if (!who || !who->GetVictim())
        return false;
 
    //experimental (unknown) flag not present
    if (!(me->GetCreatureTemplate()->type_flags & CREATURE_TYPE_FLAG_CAN_ASSIST))
        return false;
 
    //not a player
    if (!who->GetVictim()->GetCharmerOrOwnerPlayerOrPlayerItself())
        return false;
 
    //never attack friendly
    if (me->IsFriendlyTo(who))
        return false;
 
    //too far away and no free sight?
    if (me->IsWithinDistInMap(who, MAX_PLAYER_DISTANCE) && me->IsWithinLOSInMap(who))
    {
        AttackStart(who);
        return true;
    }
 
    return false;
}

References AttackStart(), CREATURE_TYPE_FLAG_CAN_ASSIST, Unit::GetCharmerOrOwnerPlayerOrPlayerItself(), Creature::GetCreatureTemplate(), Unit::GetVictim(), Unit::IsFriendlyTo(), WorldObject::IsWithinDistInMap(), WorldObject::IsWithinLOSInMap(), MAX_PLAYER_DISTANCE, ScriptedAI::me, and CreatureTemplate::type_flags.

Referenced by MoveInLineOfSight().

◆ AttackStart()

void FollowerAI::AttackStart ( Unit * who )

overridevirtual

Reimplemented from ScriptedAI.

{
    if (!who)
        return;
 
    if (me->Attack(who, true))
    {
        // This is done in Unit::Attack function which wont bug npcs by not adding threat upon combat start...
        //me->AddThreat(who, 0.0f);
        //me->SetInCombatWith(who);
        //who->SetInCombatWith(me);
 
        if (me->HasUnitState(UNIT_STATE_FOLLOW))
            me->ClearUnitState(UNIT_STATE_FOLLOW);
 
        if (me->IsCombatMovementAllowed())
            me->GetMotionMaster()->MoveChase(who);
    }
}

References Unit::Attack(), Unit::ClearUnitState(), Unit::GetMotionMaster(), Unit::HasUnitState(), Creature::IsCombatMovementAllowed(), ScriptedAI::me, MotionMaster::MoveChase(), and UNIT_STATE_FOLLOW.

Referenced by AssistPlayerInCombatAgainst(), and MoveInLineOfSight().

◆ EnterEvadeMode()

void FollowerAI::EnterEvadeMode ( EvadeReason = EVADE_REASON_OTHER )

overridevirtual

Reimplemented from CreatureAI.

{
    me->RemoveAllAuras();
    me->GetThreatMgr().ClearAllThreat();
    me->CombatStop(true);
    me->SetLootRecipient(nullptr);
 
    if (HasFollowState(STATE_FOLLOW_INPROGRESS))
    {
        LOG_DEBUG("scripts.ai", "FollowerAI left combat, returning to CombatStartPosition.");
 
        if (me->GetMotionMaster()->GetCurrentMovementGeneratorType() == CHASE_MOTION_TYPE)
        {
            float fPosX, fPosY, fPosZ;
            me->GetPosition(fPosX, fPosY, fPosZ);
            me->GetMotionMaster()->MovePoint(POINT_COMBAT_START, fPosX, fPosY, fPosZ);
        }
    }
    else
    {
        if (me->GetMotionMaster()->GetCurrentMovementGeneratorType() == CHASE_MOTION_TYPE)
            me->GetMotionMaster()->MoveTargetedHome();
    }
 
    Reset();
}

References CHASE_MOTION_TYPE, ThreatMgr::ClearAllThreat(), Unit::CombatStop(), MotionMaster::GetCurrentMovementGeneratorType(), Unit::GetMotionMaster(), Position::GetPosition(), Unit::GetThreatMgr(), HasFollowState(), LOG_DEBUG, ScriptedAI::me, MotionMaster::MovePoint(), MotionMaster::MoveTargetedHome(), POINT_COMBAT_START, Unit::RemoveAllAuras(), ScriptedAI::Reset(), Creature::SetLootRecipient(), and STATE_FOLLOW_INPROGRESS.

◆ GetLeaderForFollower()

Player * FollowerAI::GetLeaderForFollower ( )

protected

{
    if (Player* player = ObjectAccessor::GetPlayer(*me, m_uiLeaderGUID))
    {
        if (player->IsAlive())
            return player;
        else
        {
            if (Group* group = player->GetGroup())
            {
                for (GroupReference* groupRef = group->GetFirstMember(); groupRef != nullptr; groupRef = groupRef->next())
                {
                    Player* member = groupRef->GetSource();
 
                    if (member && me->IsWithinDistInMap(member, MAX_PLAYER_DISTANCE) && member->IsAlive())
                    {
                        LOG_DEBUG("scripts.ai", "FollowerAI GetLeader changed and returned new leader.");
                        m_uiLeaderGUID = member->GetGUID();
                        return member;
                    }
                }
            }
        }
    }
 
    LOG_DEBUG("scripts.ai", "FollowerAI GetLeader can not find suitable leader.");
    return nullptr;
}

References Object::GetGUID(), ObjectAccessor::GetPlayer(), Unit::IsAlive(), WorldObject::IsWithinDistInMap(), LOG_DEBUG, m_uiLeaderGUID, MAX_PLAYER_DISTANCE, ScriptedAI::me, and GroupReference::next().

Referenced by JustDied(), npc_kerlonian::npc_kerlonianAI::MoveInLineOfSight(), npc_tooga::npc_toogaAI::MoveInLineOfSight(), npc_ringo::npc_ringoAI::MoveInLineOfSight(), MovementInform(), SetFollowPaused(), and UpdateAI().

◆ HasFollowState()

bool FollowerAI::HasFollowState ( uint32 uiFollowState )

inline

◆ JustDied()

void FollowerAI::JustDied ( Unit * )

overridevirtual

Reimplemented from ScriptedAI.

{
    if (!HasFollowState(STATE_FOLLOW_INPROGRESS) || !m_uiLeaderGUID || !m_pQuestForFollow)
        return;
 
    //TODO: need a better check for quests with time limit.
    if (Player* player = GetLeaderForFollower())
    {
        if (Group* group = player->GetGroup())
        {
            for (GroupReference* groupRef = group->GetFirstMember(); groupRef != nullptr; groupRef = groupRef->next())
            {
                if (Player* member = groupRef->GetSource())
                {
                    if (member->IsInMap(player) && member->GetQuestStatus(m_pQuestForFollow->GetQuestId()) == QUEST_STATUS_INCOMPLETE)
                        member->FailQuest(m_pQuestForFollow->GetQuestId());
                }
            }
        }
        else
        {
            if (player->GetQuestStatus(m_pQuestForFollow->GetQuestId()) == QUEST_STATUS_INCOMPLETE)
                player->FailQuest(m_pQuestForFollow->GetQuestId());
        }
    }
}

References GetLeaderForFollower(), Quest::GetQuestId(), HasFollowState(), m_pQuestForFollow, m_uiLeaderGUID, GroupReference::next(), QUEST_STATUS_INCOMPLETE, and STATE_FOLLOW_INPROGRESS.

◆ JustRespawned()

void FollowerAI::JustRespawned ( )

overridevirtual

Reimplemented from CreatureAI.

{
    m_uiFollowState = STATE_FOLLOW_NONE;
 
    if (!me->IsCombatMovementAllowed())
        me->SetCombatMovement(true);
 
    if (me->GetFaction() != me->GetCreatureTemplate()->faction)
        me->SetFaction(me->GetCreatureTemplate()->faction);
 
    Reset();
}

References CreatureTemplate::faction, Creature::GetCreatureTemplate(), Unit::GetFaction(), Creature::IsCombatMovementAllowed(), m_uiFollowState, ScriptedAI::me, ScriptedAI::Reset(), Creature::SetCombatMovement(), Unit::SetFaction(), and STATE_FOLLOW_NONE.

◆ MoveInLineOfSight()

void FollowerAI::MoveInLineOfSight ( Unit * who )

overridevirtual

Reimplemented from CreatureAI.

Reimplemented in npc_kerlonian::npc_kerlonianAI, npc_tooga::npc_toogaAI, npc_ringo::npc_ringoAI, and npc_captured_beryl_sorcerer::npc_captured_beryl_sorcererAI.

{
    if (me->GetVictim())
        return;
 
    if (!me->HasUnitState(UNIT_STATE_STUNNED) && who->isTargetableForAttack(true, me) && who->isInAccessiblePlaceFor(me))
        if (HasFollowState(STATE_FOLLOW_INPROGRESS) && AssistPlayerInCombatAgainst(who))
            return;
 
    if (me->HasReactState(REACT_AGGRESSIVE) && me->CanStartAttack(who))
    {
        if (me->HasUnitState(UNIT_STATE_DISTRACTED))
        {
            me->ClearUnitState(UNIT_STATE_DISTRACTED);
            me->GetMotionMaster()->Clear();
        }
        AttackStart(who);
    }
}

References AssistPlayerInCombatAgainst(), AttackStart(), Creature::CanStartAttack(), MotionMaster::Clear(), Unit::ClearUnitState(), Unit::GetMotionMaster(), Unit::GetVictim(), HasFollowState(), Creature::HasReactState(), Unit::HasUnitState(), Unit::isInAccessiblePlaceFor(), Unit::isTargetableForAttack(), ScriptedAI::me, REACT_AGGRESSIVE, STATE_FOLLOW_INPROGRESS, UNIT_STATE_DISTRACTED, and UNIT_STATE_STUNNED.

Referenced by npc_kerlonian::npc_kerlonianAI::MoveInLineOfSight(), npc_tooga::npc_toogaAI::MoveInLineOfSight(), npc_ringo::npc_ringoAI::MoveInLineOfSight(), and npc_captured_beryl_sorcerer::npc_captured_beryl_sorcererAI::MoveInLineOfSight().

◆ MovementInform()

void FollowerAI::MovementInform	(	uint32	motionType,
		uint32	pointId
	)

overridevirtual

Reimplemented from ScriptedAI.

Reimplemented in npc_tooga::npc_toogaAI.

{
    if (motionType != POINT_MOTION_TYPE || !HasFollowState(STATE_FOLLOW_INPROGRESS))
        return;
 
    if (pointId == POINT_COMBAT_START)
    {
        if (GetLeaderForFollower())
        {
            if (!HasFollowState(STATE_FOLLOW_PAUSED))
                AddFollowState(STATE_FOLLOW_RETURNING);
        }
        else
            me->DespawnOrUnsummon();
    }
}

References AddFollowState(), Creature::DespawnOrUnsummon(), GetLeaderForFollower(), HasFollowState(), ScriptedAI::me, POINT_COMBAT_START, POINT_MOTION_TYPE, STATE_FOLLOW_INPROGRESS, STATE_FOLLOW_PAUSED, and STATE_FOLLOW_RETURNING.

Referenced by npc_tooga::npc_toogaAI::MovementInform().

◆ RemoveFollowState()

void FollowerAI::RemoveFollowState ( uint32 uiFollowState )

inlineprivate

70{ m_uiFollowState &= ~uiFollowState; }

References m_uiFollowState.

Referenced by SetFollowComplete(), SetFollowPaused(), and UpdateAI().

◆ SetFollowComplete()

void FollowerAI::SetFollowComplete ( bool bWithEndEvent = false )

{
    if (me->HasUnitState(UNIT_STATE_FOLLOW))
    {
        me->ClearUnitState(UNIT_STATE_FOLLOW);
 
        me->StopMoving();
        me->GetMotionMaster()->Clear();
        me->GetMotionMaster()->MoveIdle();
    }
 
    if (bWithEndEvent)
        AddFollowState(STATE_FOLLOW_POSTEVENT);
    else
    {
        if (HasFollowState(STATE_FOLLOW_POSTEVENT))
            RemoveFollowState(STATE_FOLLOW_POSTEVENT);
    }
 
    AddFollowState(STATE_FOLLOW_COMPLETE);
}

References AddFollowState(), MotionMaster::Clear(), Unit::ClearUnitState(), Unit::GetMotionMaster(), HasFollowState(), Unit::HasUnitState(), ScriptedAI::me, MotionMaster::MoveIdle(), RemoveFollowState(), STATE_FOLLOW_COMPLETE, STATE_FOLLOW_POSTEVENT, Unit::StopMoving(), and UNIT_STATE_FOLLOW.

Referenced by npc_kerlonian::npc_kerlonianAI::MoveInLineOfSight(), npc_tooga::npc_toogaAI::MoveInLineOfSight(), npc_ringo::npc_ringoAI::MoveInLineOfSight(), npc_captured_beryl_sorcerer::npc_captured_beryl_sorcererAI::MoveInLineOfSight(), npc_tooga::npc_toogaAI::MovementInform(), npc_tooga::npc_toogaAI::UpdateFollowerAI(), and npc_ringo::npc_ringoAI::UpdateFollowerAI().

◆ SetFollowPaused()

void FollowerAI::SetFollowPaused ( bool bPaused )

{
    if (!HasFollowState(STATE_FOLLOW_INPROGRESS) || HasFollowState(STATE_FOLLOW_COMPLETE))
        return;
 
    if (paused)
    {
        AddFollowState(STATE_FOLLOW_PAUSED);
 
        if (me->HasUnitState(UNIT_STATE_FOLLOW))
        {
            me->ClearUnitState(UNIT_STATE_FOLLOW);
 
            me->StopMoving();
            me->GetMotionMaster()->Clear();
            me->GetMotionMaster()->MoveIdle();
        }
    }
    else
    {
        RemoveFollowState(STATE_FOLLOW_PAUSED);
 
        if (Player* leader = GetLeaderForFollower())
            me->GetMotionMaster()->MoveFollow(leader, PET_FOLLOW_DIST, PET_FOLLOW_ANGLE);
    }
}

References AddFollowState(), MotionMaster::Clear(), Unit::ClearUnitState(), GetLeaderForFollower(), Unit::GetMotionMaster(), HasFollowState(), Unit::HasUnitState(), ScriptedAI::me, MotionMaster::MoveFollow(), MotionMaster::MoveIdle(), PET_FOLLOW_ANGLE, PET_FOLLOW_DIST, RemoveFollowState(), STATE_FOLLOW_COMPLETE, STATE_FOLLOW_INPROGRESS, STATE_FOLLOW_PAUSED, Unit::StopMoving(), and UNIT_STATE_FOLLOW.

Referenced by npc_ringo::npc_ringoAI::ClearFaint(), npc_kerlonian::npc_kerlonianAI::ClearSleeping(), npc_ringo::npc_ringoAI::SetFaint(), and npc_kerlonian::npc_kerlonianAI::SetSleeping().

◆ StartFollow()

void FollowerAI::StartFollow	(	Player *	player,
		uint32	factionForFollower = `0`,
		const Quest *	quest = `nullptr`
	)

{
    if (me->GetVictim())
    {
        LOG_DEBUG("scripts.ai", "FollowerAI attempt to StartFollow while in combat.");
        return;
    }
 
    if (HasFollowState(STATE_FOLLOW_INPROGRESS))
    {
        LOG_ERROR("entities.unit.ai", "FollowerAI attempt to StartFollow while already following.");
        return;
    }
 
    //set variables
    m_uiLeaderGUID = player->GetGUID();
 
    if (factionForFollower)
        me->SetFaction(factionForFollower);
 
    m_pQuestForFollow = quest;
 
    if (me->GetMotionMaster()->GetCurrentMovementGeneratorType() == WAYPOINT_MOTION_TYPE)
    {
        me->GetMotionMaster()->Clear();
        me->GetMotionMaster()->MoveIdle();
        LOG_DEBUG("scripts.ai", "FollowerAI start with WAYPOINT_MOTION_TYPE, set to MoveIdle.");
    }
 
    me->ReplaceAllNpcFlags(UNIT_NPC_FLAG_NONE);
 
    AddFollowState(STATE_FOLLOW_INPROGRESS);
 
    me->GetMotionMaster()->MoveFollow(player, PET_FOLLOW_DIST, PET_FOLLOW_ANGLE);
 
    LOG_DEBUG("scripts.ai", "FollowerAI start follow {} ({})", player->GetName(), m_uiLeaderGUID.ToString());
}

References AddFollowState(), MotionMaster::Clear(), MotionMaster::GetCurrentMovementGeneratorType(), Object::GetGUID(), Unit::GetMotionMaster(), WorldObject::GetName(), Unit::GetVictim(), HasFollowState(), LOG_DEBUG, LOG_ERROR, m_pQuestForFollow, m_uiLeaderGUID, ScriptedAI::me, MotionMaster::MoveFollow(), MotionMaster::MoveIdle(), PET_FOLLOW_ANGLE, PET_FOLLOW_DIST, Unit::ReplaceAllNpcFlags(), Unit::SetFaction(), STATE_FOLLOW_INPROGRESS, ObjectGuid::ToString(), UNIT_NPC_FLAG_NONE, and WAYPOINT_MOTION_TYPE.

Referenced by npc_captured_beryl_sorcerer::npc_captured_beryl_sorcererAI::UpdateAI().

◆ UpdateAI()

void FollowerAI::UpdateAI ( uint32 )

overridevirtual

Use to start attacking a target. Called just before JustEngagedWith()

Reimplemented from ScriptedAI.

Reimplemented in npc_rabid_thistle_bear::npc_rabid_thistle_bearAI, and npc_captured_beryl_sorcerer::npc_captured_beryl_sorcererAI.

{
    if (HasFollowState(STATE_FOLLOW_INPROGRESS) && !me->GetVictim())
    {
        if (m_uiUpdateFollowTimer <= uiDiff)
        {
            if (HasFollowState(STATE_FOLLOW_COMPLETE) && !HasFollowState(STATE_FOLLOW_POSTEVENT))
            {
                LOG_DEBUG("scripts.ai", "FollowerAI is set completed, despawns.");
                me->DespawnOrUnsummon();
                return;
            }
 
            bool bIsMaxRangeExceeded = true;
 
            if (Player* player = GetLeaderForFollower())
            {
                if (HasFollowState(STATE_FOLLOW_RETURNING))
                {
                    LOG_DEBUG("scripts.ai", "FollowerAI is returning to leader.");
 
                    RemoveFollowState(STATE_FOLLOW_RETURNING);
                    me->GetMotionMaster()->MoveFollow(player, PET_FOLLOW_DIST, PET_FOLLOW_ANGLE);
                    return;
                }
 
                if (Group* group = player->GetGroup())
                {
                    for (GroupReference* groupRef = group->GetFirstMember(); groupRef != nullptr; groupRef = groupRef->next())
                    {
                        Player* member = groupRef->GetSource();
 
                        if (member && me->IsWithinDistInMap(member, MAX_PLAYER_DISTANCE, true, false))
                        {
                            bIsMaxRangeExceeded = false;
                            break;
                        }
                    }
                }
                else
                {
                    if (me->IsWithinDistInMap(player, MAX_PLAYER_DISTANCE, true, false))
                        bIsMaxRangeExceeded = false;
                }
            }
 
            if (bIsMaxRangeExceeded)
            {
                LOG_DEBUG("scripts.ai", "FollowerAI failed because player/group was to far away or not found");
                me->DespawnOrUnsummon();
                return;
            }
 
            m_uiUpdateFollowTimer = 1000;
        }
        else
            m_uiUpdateFollowTimer -= uiDiff;
    }
 
    UpdateFollowerAI(uiDiff);
}

References Creature::DespawnOrUnsummon(), GetLeaderForFollower(), Unit::GetMotionMaster(), Unit::GetVictim(), HasFollowState(), WorldObject::IsWithinDistInMap(), LOG_DEBUG, m_uiUpdateFollowTimer, MAX_PLAYER_DISTANCE, ScriptedAI::me, MotionMaster::MoveFollow(), GroupReference::next(), PET_FOLLOW_ANGLE, PET_FOLLOW_DIST, RemoveFollowState(), STATE_FOLLOW_COMPLETE, STATE_FOLLOW_INPROGRESS, STATE_FOLLOW_POSTEVENT, STATE_FOLLOW_RETURNING, and UpdateFollowerAI().

◆ UpdateFollowerAI()

void FollowerAI::UpdateFollowerAI ( uint32 )

virtual

Reimplemented in npc_kerlonian::npc_kerlonianAI, npc_tooga::npc_toogaAI, and npc_ringo::npc_ringoAI.

{
    if (!UpdateVictim())
        return;
 
    DoMeleeAttackIfReady();
}

References UnitAI::DoMeleeAttackIfReady(), and CreatureAI::UpdateVictim().

Referenced by UpdateAI().

Member Data Documentation

◆ m_pQuestForFollow

const Quest* FollowerAI::m_pQuestForFollow

private

Referenced by JustDied(), and StartFollow().

◆ m_uiFollowState

uint32 FollowerAI::m_uiFollowState

private

Referenced by AddFollowState(), HasFollowState(), JustRespawned(), and RemoveFollowState().

◆ m_uiLeaderGUID

ObjectGuid FollowerAI::m_uiLeaderGUID

private

Referenced by GetLeaderForFollower(), JustDied(), and StartFollow().

◆ m_uiUpdateFollowTimer

uint32 FollowerAI::m_uiUpdateFollowTimer

private

Referenced by UpdateAI().

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ FollowerAI()

◆ ~FollowerAI()

Member Function Documentation

◆ AddFollowState()

◆ AssistPlayerInCombatAgainst()

◆ AttackStart()

◆ EnterEvadeMode()

◆ GetLeaderForFollower()

◆ HasFollowState()

◆ JustDied()

◆ JustRespawned()

◆ MoveInLineOfSight()

◆ MovementInform()

◆ RemoveFollowState()

◆ SetFollowComplete()

◆ SetFollowPaused()

◆ StartFollow()

◆ UpdateAI()

◆ UpdateFollowerAI()

Member Data Documentation

◆ m_pQuestForFollow

◆ m_uiFollowState

◆ m_uiLeaderGUID

◆ m_uiUpdateFollowTimer