ScriptedCreature.cpp

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "ScriptedCreature.h"
#include "AreaBoundary.h"
#include "DB2Stores.h"
#include "Cell.h"
#include "CellImpl.h"
#include "Containers.h"
#include "CreatureAIImpl.h"
#include "GridNotifiers.h"
#include "GridNotifiersImpl.h"
#include "InstanceScript.h"
#include "Log.h"
#include "Loot.h"
#include "MotionMaster.h"
#include "ObjectAccessor.h"
#include "PhasingHandler.h"
#include "Spell.h"
#include "SpellMgr.h"
#include "TemporarySummon.h"
 
void SummonList::Summon(Creature const* summon)
{
 _storage.push_back(summon->GetGUID());
}
 
void SummonList::Despawn(Creature const* summon)
{
 _storage.remove(summon->GetGUID());
}
 
void SummonList::DoZoneInCombat(uint32 entry)
{
 for (StorageType::iterator i = _storage.begin(); i != _storage.end();)
 {
 Creature* summon = ObjectAccessor::GetCreature(*_me, *i);
 ++i;
 if (summon && summon->IsAIEnabled()
 && (!entry || summon->GetEntry() == entry))
 {
 summon->AI()->DoZoneInCombat();
 }
 }
}
 
void SummonList::DespawnEntry(uint32 entry)
{
 for (StorageType::iterator i = _storage.begin(); i != _storage.end();)
 {
 Creature* summon = ObjectAccessor::GetCreature(*_me, *i);
 if (!summon)
 i = _storage.erase(i);
 else if (summon->GetEntry() == entry)
 {
 i = _storage.erase(i);
 summon->DespawnOrUnsummon();
 }
 else
 ++i;
 }
}
 
void SummonList::DespawnAll()
{
 while (!_storage.empty())
 {
 Creature* summon = ObjectAccessor::GetCreature(*_me, _storage.front());
 _storage.pop_front();
 if (summon)
 summon->DespawnOrUnsummon();
 }
}
 
void SummonList::RemoveNotExisting()
{
 for (StorageType::iterator i = _storage.begin(); i != _storage.end();)
 {
 if (ObjectAccessor::GetCreature(*_me, *i))
 ++i;
 else
 i = _storage.erase(i);
 }
}
 
bool SummonList::HasEntry(uint32 entry) const
{
 for (ObjectGuid const& guid : _storage)
 {
 Creature* summon = ObjectAccessor::GetCreature(*_me, guid);
 if (summon && summon->GetEntry() == entry)
 return true;
 }
 
 return false;
}
 
void SummonList::DoActionImpl(int32 action, StorageType& summons, uint16 max)
{
 if (max)
 Trinity::Containers::RandomResize(summons, max);
 
 for (ObjectGuid const& guid : summons)
 {
 Creature* summon = ObjectAccessor::GetCreature(*_me, guid);
 if (summon && summon->IsAIEnabled())
 summon->AI()->DoAction(action);
 }
}
 
ScriptedAI::ScriptedAI(Creature* creature) : ScriptedAI(creature, creature->GetScriptId()) { }
 
ScriptedAI::ScriptedAI(Creature* creature, uint32 scriptId) : CreatureAI(creature, scriptId), IsFleeing(false), _isCombatMovementAllowed(true)
{
 _difficulty = me->GetMap()->GetDifficultyID();
}
 
void ScriptedAI::AttackStartNoMove(Unit* who)
{
 if (!who)
 return;
 
 if (me->Attack(who, true))
 DoStartNoMovement(who);
}
 
void ScriptedAI::AttackStart(Unit* who)
{
 if (IsCombatMovementAllowed())
 CreatureAI::AttackStart(who);
 else
 AttackStartNoMove(who);
}
 
void ScriptedAI::UpdateAI(uint32 /*diff*/)
{
 // Check if we have a current target
 UpdateVictim();
}
 
void ScriptedAI::DoStartMovement(Unit* victim, float distance, float angle)
{
 if (victim)
 me->StartDefaultCombatMovement(victim, distance, angle);
}
 
void ScriptedAI::DoStartNoMovement(Unit* victim)
{
 if (!victim)
 return;
 
 me->GetMotionMaster()->MoveIdle();
}
 
void ScriptedAI::DoStopAttack()
{
 if (me->GetVictim())
 me->AttackStop();
}
 
void ScriptedAI::DoCastSpell(Unit* target, SpellInfo const* spellInfo, bool triggered)
{
 if (!target || me->IsNonMeleeSpellCast(false))
 return;
 
 me->StopMoving();
 me->CastSpell(target, spellInfo->Id, triggered ? TRIGGERED_FULL_MASK : TRIGGERED_NONE);
}
 
void ScriptedAI::DoPlaySoundToSet(WorldObject* source, uint32 soundId)
{
 if (!source)
 return;
 
 if (!sSoundKitStore.LookupEntry(soundId))
 {
 TC_LOG_ERROR("scripts.ai", "ScriptedAI::DoPlaySoundToSet: Invalid soundId {} used in DoPlaySoundToSet (Source: {})", soundId, source->GetGUID().ToString());
 return;
 }
 
 source->PlayDirectSound(soundId);
}
 
void ScriptedAI::AddThreat(Unit* victim, float amount, Unit* who)
{
 if (!victim)
 return;
 if (!who)
 who = me;
 who->GetThreatManager().AddThreat(victim, amount, nullptr, true, true);
}
 
void ScriptedAI::ModifyThreatByPercent(Unit* victim, int32 pct, Unit* who)
{
 if (!victim)
 return;
 if (!who)
 who = me;
 who->GetThreatManager().ModifyThreatByPercent(victim, pct);
}
 
void ScriptedAI::ResetThreat(Unit* victim, Unit* who)
{
 if (!victim)
 return;
 if (!who)
 who = me;
 who->GetThreatManager().ResetThreat(victim);
}
 
void ScriptedAI::ResetThreatList(Unit* who)
{
 if (!who)
 who = me;
 who->GetThreatManager().ResetAllThreat();
}
 
float ScriptedAI::GetThreat(Unit const* victim, Unit const* who)
{
 if (!victim)
 return 0.0f;
 if (!who)
 who = me;
 return who->GetThreatManager().GetThreat(victim);
}
 
void ScriptedAI::ForceCombatStop(Creature* who, bool reset /*= true*/)
{
 if (!who || !who->IsInCombat())
 return;
 
 who->CombatStop(true);
 who->DoNotReacquireSpellFocusTarget();
 who->GetMotionMaster()->Clear(MOTION_PRIORITY_NORMAL);
 
 if (reset)
 {
 who->LoadCreaturesAddon();
 if (!me->IsTapListNotClearedOnEvade())
 who->SetTappedBy(nullptr);
 
 who->ResetPlayerDamageReq();
 who->SetLastDamagedTime(0);
 who->SetCannotReachTarget(false);
 }
}
 
void ScriptedAI::ForceCombatStopForCreatureEntry(uint32 entry, float maxSearchRange /*= 250.0f*/, bool samePhase /*= true*/, bool reset /*= true*/)
{
 TC_LOG_DEBUG("scripts.ai", "ScriptedAI::ForceCombatStopForCreatureEntry: called on '{}'. Debug info: {}", me->GetGUID().ToString(), me->GetDebugInfo());
 
 std::list<Creature*> creatures;
 Trinity::AllCreaturesOfEntryInRange check(me, entry, maxSearchRange);
 Trinity::CreatureListSearcher<Trinity::AllCreaturesOfEntryInRange> searcher(me, creatures, check);
 
 if (!samePhase)
 PhasingHandler::SetAlwaysVisible(me, true, false);
 
 Cell::VisitGridObjects(me, searcher, maxSearchRange);
 
 if (!samePhase)
 PhasingHandler::SetAlwaysVisible(me, false, false);
 
 for (Creature* creature : creatures)
 ForceCombatStop(creature, reset);
}
 
void ScriptedAI::ForceCombatStopForCreatureEntry(std::vector<uint32> creatureEntries, float maxSearchRange /*= 250.0f*/, bool samePhase /*= true*/, bool reset /*= true*/)
{
 for (uint32 const entry : creatureEntries)
 ForceCombatStopForCreatureEntry(entry, maxSearchRange, samePhase, reset);
}
 
Creature* ScriptedAI::DoSpawnCreature(uint32 entry, float offsetX, float offsetY, float offsetZ, float angle, uint32 type, Milliseconds despawntime)
{
 return me->SummonCreature(entry, me->GetPositionX() + offsetX, me->GetPositionY() + offsetY, me->GetPositionZ() + offsetZ, angle, TempSummonType(type), despawntime);
}
 
bool ScriptedAI::HealthBelowPct(uint32 pct) const
{
 return me->HealthBelowPct(pct);
}
 
bool ScriptedAI::HealthAbovePct(uint32 pct) const
{
 return me->HealthAbovePct(pct);
}
 
bool ScriptedAI::IsLFR() const
{
 return me->GetMap()->IsLFR();
}
 
bool ScriptedAI::IsNormal() const
{
 return me->GetMap()->IsNormal();
}
 
bool ScriptedAI::IsHeroic() const
{
 return me->GetMap()->IsHeroic();
}
 
bool ScriptedAI::IsMythic() const
{
 return me->GetMap()->IsMythic();
}
 
bool ScriptedAI::IsMythicPlus() const
{
 return me->GetMap()->IsMythicPlus();
}
 
bool ScriptedAI::IsHeroicOrHigher() const
{
 return me->GetMap()->IsHeroicOrHigher();
}
 
bool ScriptedAI::IsTimewalking() const
{
 return me->GetMap()->IsTimewalking();
}
 
SpellInfo const* ScriptedAI::SelectSpell(Unit* target, uint32 school, uint32 mechanic, SelectTargetType targets, float rangeMin, float rangeMax, SelectEffect effect)
{
 // No target so we can't cast
 if (!target)
 return nullptr;
 
 // Silenced so we can't cast
 if (me->IsSilenced(school ? SpellSchoolMask(school) : SPELL_SCHOOL_MASK_MAGIC))
 return nullptr;
 
 // Using the extended script system we first create a list of viable spells
 SpellInfo const* apSpell[MAX_CREATURE_SPELLS];
 memset(apSpell, 0, MAX_CREATURE_SPELLS * sizeof(SpellInfo*));
 
 uint32 spellCount = 0;
 
 SpellInfo const* tempSpell = nullptr;
 AISpellInfoType const* aiSpell = nullptr;
 
 // Check if each spell is viable(set it to null if not)
 for (uint32 spell : me->m_spells)
 {
 tempSpell = sSpellMgr->GetSpellInfo(spell, me->GetMap()->GetDifficultyID());
 aiSpell = GetAISpellInfo(spell, me->GetMap()->GetDifficultyID());
 
 // This spell doesn't exist
 if (!tempSpell || !aiSpell)
 continue;
 
 // Targets and Effects checked first as most used restrictions
 // Check the spell targets if specified
 if (targets && !(aiSpell->Targets & (1 << (targets-1))))
 continue;
 
 // Check the type of spell if we are looking for a specific spell type
 if (effect && !(aiSpell->Effects & (1 << (effect-1))))
 continue;
 
 // Check for school if specified
 if (school && (tempSpell->SchoolMask & school) == 0)
 continue;
 
 // Check for spell mechanic if specified
 if (mechanic && tempSpell->Mechanic != mechanic)
 continue;
 
 // Continue if we don't have the mana to actually cast this spell
 bool hasPower = true;
 for (SpellPowerCost const& cost : tempSpell->CalcPowerCost(me, tempSpell->GetSchoolMask()))
 {
 if (cost.Amount > me->GetPower(cost.Power))
 {
 hasPower = false;
 break;
 }
 }
 
 if (!hasPower)
 continue;
 
 // Check if the spell meets our range requirements
 if (rangeMin && me->GetSpellMinRangeForTarget(target, tempSpell) < rangeMin)
 continue;
 if (rangeMax && me->GetSpellMaxRangeForTarget(target, tempSpell) > rangeMax)
 continue;
 
 // Check if our target is in range
 if (me->IsWithinDistInMap(target, float(me->GetSpellMinRangeForTarget(target, tempSpell))) || !me->IsWithinDistInMap(target, float(me->GetSpellMaxRangeForTarget(target, tempSpell))))
 continue;
 
 // All good so lets add it to the spell list
 apSpell[spellCount] = tempSpell;
 ++spellCount;
 }
 
 // We got our usable spells so now lets randomly pick one
 if (!spellCount)
 return nullptr;
 
 return apSpell[urand(0, spellCount - 1)];
}
 
void ScriptedAI::DoTeleportTo(float x, float y, float z, uint32 time)
{
 me->Relocate(x, y, z);
 float speed = me->GetDistance(x, y, z) / ((float)time * 0.001f);
 me->MonsterMoveWithSpeed(x, y, z, speed);
}
 
void ScriptedAI::DoTeleportTo(const float position[4])
{
 me->NearTeleportTo(position[0], position[1], position[2], position[3]);
}
 
void ScriptedAI::DoTeleportPlayer(Unit* unit, float x, float y, float z, float o)
{
 if (!unit)
 return;
 
 if (Player* player = unit->ToPlayer())
 player->TeleportTo(unit->GetMapId(), x, y, z, o, TELE_TO_NOT_LEAVE_COMBAT);
 else
 TC_LOG_ERROR("scripts.ai", "ScriptedAI::DoTeleportPlayer: Creature {} Tried to teleport non-player unit ({}) to x: {} y:{} z: {} o: {}. Aborted.",
 me->GetGUID().ToString(), unit->GetGUID().ToString(), x, y, z, o);
}
 
void ScriptedAI::DoTeleportAll(float x, float y, float z, float o)
{
 Map* map = me->GetMap();
 if (!map->IsDungeon())
 return;
 
 for (MapReference const& mapref : map->GetPlayers())
 if (Player* player = mapref.GetSource())
 if (player->IsAlive())
 player->TeleportTo(me->GetMapId(), x, y, z, o, TELE_TO_NOT_LEAVE_COMBAT);
}
 
Unit* ScriptedAI::DoSelectLowestHpFriendly(float range, uint32 minHPDiff)
{
 Unit* unit = nullptr;
 Trinity::MostHPMissingInRange u_check(me, range, minHPDiff);
 Trinity::UnitLastSearcher<Trinity::MostHPMissingInRange> searcher(me, unit, u_check);
 Cell::VisitAllObjects(me, searcher, range);
 
 return unit;
}
 
Unit* ScriptedAI::DoSelectBelowHpPctFriendlyWithEntry(uint32 entry, float range, uint8 minHPDiff, bool excludeSelf)
{
 Unit* unit = nullptr;
 Trinity::FriendlyBelowHpPctEntryInRange u_check(me, entry, range, minHPDiff, excludeSelf);
 Trinity::UnitLastSearcher<Trinity::FriendlyBelowHpPctEntryInRange> searcher(me, unit, u_check);
 Cell::VisitAllObjects(me, searcher, range);
 
 return unit;
}
 
std::list<Creature*> ScriptedAI::DoFindFriendlyCC(float range)
{
 std::list<Creature*> list;
 Trinity::FriendlyCCedInRange u_check(me, range);
 Trinity::CreatureListSearcher<Trinity::FriendlyCCedInRange> searcher(me, list, u_check);
 Cell::VisitAllObjects(me, searcher, range);
 
 return list;
}
 
std::list<Creature*> ScriptedAI::DoFindFriendlyMissingBuff(float range, uint32 uiSpellid)
{
 std::list<Creature*> list;
 Trinity::FriendlyMissingBuffInRange u_check(me, range, uiSpellid);
 Trinity::CreatureListSearcher<Trinity::FriendlyMissingBuffInRange> searcher(me, list, u_check);
 Cell::VisitAllObjects(me, searcher, range);
 
 return list;
}
 
Player* ScriptedAI::GetPlayerAtMinimumRange(float minimumRange)
{
 Player* player = nullptr;
 
 Trinity::PlayerAtMinimumRangeAway check(me, minimumRange);
 Trinity::PlayerSearcher<Trinity::PlayerAtMinimumRangeAway> searcher(me, player, check);
 Cell::VisitWorldObjects(me, searcher, minimumRange);
 
 return player;
}
 
void ScriptedAI::SetEquipmentSlots(bool loadDefault, int32 mainHand /*= EQUIP_NO_CHANGE*/, int32 offHand /*= EQUIP_NO_CHANGE*/, int32 ranged /*= EQUIP_NO_CHANGE*/)
{
 if (loadDefault)
 {
 me->LoadEquipment(me->GetOriginalEquipmentId(), true);
 return;
 }
 
 if (mainHand >= 0)
 me->SetVirtualItem(0, uint32(mainHand));
 
 if (offHand >= 0)
 me->SetVirtualItem(1, uint32(offHand));
 
 if (ranged >= 0)
 me->SetVirtualItem(2, uint32(ranged));
}
 
void ScriptedAI::SetCombatMovement(bool allowMovement)
{
 _isCombatMovementAllowed = allowMovement;
}
 
// BossAI - for instanced bosses
BossAI::BossAI(Creature* creature, uint32 bossId) : ScriptedAI(creature), instance(creature->GetInstanceScript()), summons(creature), _bossId(bossId)
{
 if (instance)
 SetBoundary(instance->GetBossBoundary(bossId));
 scheduler.SetValidator([this]
 {
 return !me->HasUnitState(UNIT_STATE_CASTING);
 });
}
 
void BossAI::_Reset()
{
 if (!me->IsAlive())
 return;
 
 me->SetCombatPulseDelay(0);
 me->ResetLootMode();
 events.Reset();
 summons.DespawnAll();
 scheduler.CancelAll();
 if (instance && instance->GetBossState(_bossId) != DONE)
 instance->SetBossState(_bossId, NOT_STARTED);
}
 
void BossAI::_JustDied()
{
 events.Reset();
 summons.DespawnAll();
 scheduler.CancelAll();
 if (instance)
 instance->SetBossState(_bossId, DONE);
}
 
void BossAI::_JustReachedHome()
{
 me->setActive(false);
}
 
void BossAI::_JustEngagedWith(Unit* who)
{
 if (instance)
 {
 // bosses do not respawn, check only on enter combat
 if (!instance->CheckRequiredBosses(_bossId, who->ToPlayer()))
 {
 EnterEvadeMode(EvadeReason::SequenceBreak);
 return;
 }
 instance->SetBossState(_bossId, IN_PROGRESS);
 }
 
 me->SetCombatPulseDelay(5);
 me->setActive(true);
 DoZoneInCombat();
 ScheduleTasks();
}
 
void BossAI::TeleportCheaters()
{
 float x, y, z;
 me->GetPosition(x, y, z);
 
 for (auto const& pair : me->GetCombatManager().GetPvECombatRefs())
 {
 Unit* target = pair.second->GetOther(me);
 if (target->IsControlledByPlayer() && !IsInBoundary(target))
 target->NearTeleportTo(x, y, z, 0);
 }
}
 
void BossAI::JustSummoned(Creature* summon)
{
 summons.Summon(summon);
 if (me->IsEngaged())
 DoZoneInCombat(summon);
}
 
void BossAI::SummonedCreatureDespawn(Creature* summon)
{
 summons.Despawn(summon);
}
 
void BossAI::UpdateAI(uint32 diff)
{
 if (!UpdateVictim())
 return;
 
 events.Update(diff);
 
 if (me->HasUnitState(UNIT_STATE_CASTING))
 return;
 
 while (uint32 eventId = events.ExecuteEvent())
 {
 ExecuteEvent(eventId);
 if (me->HasUnitState(UNIT_STATE_CASTING))
 return;
 }
}
 
bool BossAI::CanAIAttack(Unit const* target) const
{
 return IsInBoundary(target);
}
 
void BossAI::_DespawnAtEvade(Seconds delayToRespawn /*= 30s*/, Creature* who /*= nullptr*/)
{
 if (delayToRespawn < 2s)
 {
 TC_LOG_ERROR("scripts.ai", "BossAI::_DespawnAtEvade: called with delay of {} seconds, defaulting to 2 (me: {})", delayToRespawn.count(), me->GetGUID().ToString());
 delayToRespawn = 2s;
 }
 
 if (!who)
 who = me;
 
 if (TempSummon* whoSummon = who->ToTempSummon())
 {
 TC_LOG_WARN("scripts.ai", "BossAI::_DespawnAtEvade: called on a temporary summon (who: {})", who->GetGUID().ToString());
 whoSummon->UnSummon();
 return;
 }
 
 who->DespawnOrUnsummon(0s, delayToRespawn);
 
 if (instance && who == me)
 instance->SetBossState(_bossId, FAIL);
}
 
// WorldBossAI - for non-instanced bosses
WorldBossAI::WorldBossAI(Creature* creature) : ScriptedAI(creature), summons(creature) { }
 
void WorldBossAI::_Reset()
{
 if (!me->IsAlive())
 return;
 
 events.Reset();
 summons.DespawnAll();
}
 
void WorldBossAI::_JustDied()
{
 events.Reset();
 summons.DespawnAll();
}
 
void WorldBossAI::_JustEngagedWith()
{
 Unit* target = SelectTarget(SelectTargetMethod::Random, 0, 0.0f, true);
 if (target)
 AttackStart(target);
}
 
void WorldBossAI::JustSummoned(Creature* summon)
{
 summons.Summon(summon);
 Unit* target = SelectTarget(SelectTargetMethod::Random, 0, 0.0f, true);
 if (target)
 summon->AI()->AttackStart(target);
}
 
void WorldBossAI::SummonedCreatureDespawn(Creature* summon)
{
 summons.Despawn(summon);
}
 
void WorldBossAI::UpdateAI(uint32 diff)
{
 if (!UpdateVictim())
 return;
 
 events.Update(diff);
 
 if (me->HasUnitState(UNIT_STATE_CASTING))
 return;
 
 while (uint32 eventId = events.ExecuteEvent())
 {
 ExecuteEvent(eventId);
 if (me->HasUnitState(UNIT_STATE_CASTING))
 return;
 }
}