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Spell.cpp
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Spell.cpp
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/*
* Copyright (C) 2008-2015 TrinityCore <http://www.trinitycore.org/>
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*
* 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 "Common.h"
#include "DatabaseEnv.h"
#include "WorldPacket.h"
#include "WorldSession.h"
#include "GridNotifiers.h"
#include "GridNotifiersImpl.h"
#include "Opcodes.h"
#include "Log.h"
#include "UpdateMask.h"
#include "World.h"
#include "ObjectMgr.h"
#include "SpellMgr.h"
#include "Player.h"
#include "Pet.h"
#include "Unit.h"
#include "Spell.h"
#include "DynamicObject.h"
#include "Guild.h"
#include "UpdateData.h"
#include "ObjectAccessor.h"
#include "CellImpl.h"
#include "SharedDefines.h"
#include "LootMgr.h"
#include "VMapFactory.h"
#include "Battleground.h"
#include "Util.h"
#include "TemporarySummon.h"
#include "Vehicle.h"
#include "SpellAuraEffects.h"
#include "ScriptMgr.h"
#include "ConditionMgr.h"
#include "DisableMgr.h"
#include "SpellScript.h"
#include "InstanceScript.h"
#include "SpellInfo.h"
#include "DB2Stores.h"
#include "Battlefield.h"
#include "BattlefieldMgr.h"
#include "SpellPackets.h"
#include "CombatLogPackets.h"
#include "SpellHistory.h"
extern pEffect SpellEffects[TOTAL_SPELL_EFFECTS];
SpellDestination::SpellDestination()
{
_position.Relocate(0, 0, 0, 0);
_transportGUID.Clear();
_transportOffset.Relocate(0, 0, 0, 0);
}
SpellDestination::SpellDestination(float x, float y, float z, float orientation, uint32 mapId)
{
_position.Relocate(x, y, z, orientation);
_transportGUID.Clear();
_position.m_mapId = mapId;
_transportOffset.Relocate(0, 0, 0, 0);
}
SpellDestination::SpellDestination(Position const& pos)
{
_position.Relocate(pos);
_transportGUID.Clear();
_transportOffset.Relocate(0, 0, 0, 0);
}
SpellDestination::SpellDestination(WorldObject const& wObj)
{
_transportGUID = wObj.GetTransGUID();
_transportOffset.Relocate(wObj.GetTransOffsetX(), wObj.GetTransOffsetY(), wObj.GetTransOffsetZ(), wObj.GetTransOffsetO());
_position.Relocate(wObj);
}
void SpellDestination::Relocate(Position const& pos)
{
if (!_transportGUID.IsEmpty())
{
Position offset;
_position.GetPositionOffsetTo(pos, offset);
_transportOffset.RelocateOffset(offset);
}
_position.Relocate(pos);
}
void SpellDestination::RelocateOffset(Position const& offset)
{
if (!_transportGUID.IsEmpty())
_transportOffset.RelocateOffset(offset);
_position.RelocateOffset(offset);
}
SpellCastTargets::SpellCastTargets() : m_targetMask(0), m_objectTarget(nullptr), m_itemTarget(nullptr),
m_itemTargetEntry(0), m_pitch(0.0f), m_speed(0.0f)
{
}
SpellCastTargets::SpellCastTargets(Unit* caster, WorldPackets::Spells::SpellCastRequest const& spellCastRequest) :
m_targetMask(spellCastRequest.Target.Flags), m_objectTarget(nullptr), m_itemTarget(nullptr),
m_objectTargetGUID(spellCastRequest.Target.Unit), m_itemTargetGUID(spellCastRequest.Target.Item),
m_itemTargetEntry(0), m_pitch(0.0f), m_speed(0.0f), m_strTarget(spellCastRequest.Target.Name)
{
if (spellCastRequest.Target.SrcLocation)
{
m_src._transportGUID = spellCastRequest.Target.SrcLocation->Transport;
Position* pos;
if (!m_src._transportGUID.IsEmpty())
pos = &m_src._transportOffset;
else
pos = &m_src._position;
pos->Relocate(spellCastRequest.Target.SrcLocation->Location);
if (spellCastRequest.Target.Orientation)
pos->SetOrientation(*spellCastRequest.Target.Orientation);
}
if (spellCastRequest.Target.DstLocation)
{
m_dst._transportGUID = spellCastRequest.Target.DstLocation->Transport;
Position* pos;
if (!m_dst._transportGUID.IsEmpty())
pos = &m_dst._transportOffset;
else
pos = &m_dst._position;
pos->Relocate(spellCastRequest.Target.DstLocation->Location);
if (spellCastRequest.Target.Orientation)
pos->SetOrientation(*spellCastRequest.Target.Orientation);
}
SetPitch(spellCastRequest.MissileTrajectory.Pitch);
SetSpeed(spellCastRequest.MissileTrajectory.Speed);
Update(caster);
}
SpellCastTargets::~SpellCastTargets() { }
void SpellCastTargets::Write(WorldPackets::Spells::SpellTargetData& data)
{
data.Flags = m_targetMask;
if (m_targetMask & (TARGET_FLAG_UNIT | TARGET_FLAG_CORPSE_ALLY | TARGET_FLAG_GAMEOBJECT | TARGET_FLAG_CORPSE_ENEMY | TARGET_FLAG_UNIT_MINIPET))
data.Unit = m_objectTargetGUID;
if (m_targetMask & (TARGET_FLAG_ITEM | TARGET_FLAG_TRADE_ITEM) && m_itemTarget)
data.Item = m_itemTarget->GetGUID();
if (m_targetMask & TARGET_FLAG_SOURCE_LOCATION)
{
data.SrcLocation = boost::in_place();
data.SrcLocation->Transport = m_src._transportGUID; // relative position guid here - transport for example
if (!m_src._transportGUID.IsEmpty())
data.SrcLocation->Location = m_src._transportOffset;
else
data.SrcLocation->Location = m_src._position;
}
if (m_targetMask & TARGET_FLAG_DEST_LOCATION)
{
data.DstLocation = boost::in_place();
data.DstLocation->Transport = m_dst._transportGUID; // relative position guid here - transport for example
if (!m_dst._transportGUID.IsEmpty())
data.DstLocation->Location = m_dst._transportOffset;
else
data.DstLocation->Location = m_dst._position;
}
if (m_targetMask & TARGET_FLAG_STRING)
data.Name = m_strTarget;
}
ObjectGuid SpellCastTargets::GetOrigUnitTargetGUID() const
{
switch (m_origObjectTargetGUID.GetHigh())
{
case HighGuid::Player:
case HighGuid::Vehicle:
case HighGuid::Creature:
case HighGuid::Pet:
return m_origObjectTargetGUID;
default:
return ObjectGuid();
}
}
void SpellCastTargets::SetOrigUnitTarget(Unit* target)
{
if (!target)
return;
m_origObjectTargetGUID = target->GetGUID();
}
ObjectGuid SpellCastTargets::GetUnitTargetGUID() const
{
if (m_objectTargetGUID.IsUnit())
return m_objectTargetGUID;
return ObjectGuid::Empty;
}
Unit* SpellCastTargets::GetUnitTarget() const
{
if (m_objectTarget)
return m_objectTarget->ToUnit();
return NULL;
}
void SpellCastTargets::SetUnitTarget(Unit* target)
{
if (!target)
return;
m_objectTarget = target;
m_objectTargetGUID = target->GetGUID();
m_targetMask |= TARGET_FLAG_UNIT;
}
ObjectGuid SpellCastTargets::GetGOTargetGUID() const
{
if (m_objectTargetGUID.IsAnyTypeGameObject())
return m_objectTargetGUID;
return ObjectGuid::Empty;
}
GameObject* SpellCastTargets::GetGOTarget() const
{
if (m_objectTarget)
return m_objectTarget->ToGameObject();
return NULL;
}
void SpellCastTargets::SetGOTarget(GameObject* target)
{
if (!target)
return;
m_objectTarget = target;
m_objectTargetGUID = target->GetGUID();
m_targetMask |= TARGET_FLAG_GAMEOBJECT;
}
ObjectGuid SpellCastTargets::GetCorpseTargetGUID() const
{
if (m_objectTargetGUID.IsCorpse())
return m_objectTargetGUID;
return ObjectGuid::Empty;
}
Corpse* SpellCastTargets::GetCorpseTarget() const
{
if (m_objectTarget)
return m_objectTarget->ToCorpse();
return NULL;
}
WorldObject* SpellCastTargets::GetObjectTarget() const
{
return m_objectTarget;
}
ObjectGuid SpellCastTargets::GetObjectTargetGUID() const
{
return m_objectTargetGUID;
}
void SpellCastTargets::RemoveObjectTarget()
{
m_objectTarget = NULL;
m_objectTargetGUID.Clear();
m_targetMask &= ~(TARGET_FLAG_UNIT_MASK | TARGET_FLAG_CORPSE_MASK | TARGET_FLAG_GAMEOBJECT_MASK);
}
void SpellCastTargets::SetItemTarget(Item* item)
{
if (!item)
return;
m_itemTarget = item;
m_itemTargetGUID = item->GetGUID();
m_itemTargetEntry = item->GetEntry();
m_targetMask |= TARGET_FLAG_ITEM;
}
void SpellCastTargets::SetTradeItemTarget(Player* caster)
{
m_itemTargetGUID = ObjectGuid::TradeItem;
m_itemTargetEntry = 0;
m_targetMask |= TARGET_FLAG_TRADE_ITEM;
Update(caster);
}
void SpellCastTargets::UpdateTradeSlotItem()
{
if (m_itemTarget && (m_targetMask & TARGET_FLAG_TRADE_ITEM))
{
m_itemTargetGUID = m_itemTarget->GetGUID();
m_itemTargetEntry = m_itemTarget->GetEntry();
}
}
SpellDestination const* SpellCastTargets::GetSrc() const
{
return &m_src;
}
Position const* SpellCastTargets::GetSrcPos() const
{
return &m_src._position;
}
void SpellCastTargets::SetSrc(float x, float y, float z)
{
m_src = SpellDestination(x, y, z);
m_targetMask |= TARGET_FLAG_SOURCE_LOCATION;
}
void SpellCastTargets::SetSrc(Position const& pos)
{
m_src = SpellDestination(pos);
m_targetMask |= TARGET_FLAG_SOURCE_LOCATION;
}
void SpellCastTargets::SetSrc(WorldObject const& wObj)
{
m_src = SpellDestination(wObj);
m_targetMask |= TARGET_FLAG_SOURCE_LOCATION;
}
void SpellCastTargets::ModSrc(Position const& pos)
{
ASSERT(m_targetMask & TARGET_FLAG_SOURCE_LOCATION);
m_src.Relocate(pos);
}
void SpellCastTargets::RemoveSrc()
{
m_targetMask &= ~(TARGET_FLAG_SOURCE_LOCATION);
}
SpellDestination const* SpellCastTargets::GetDst() const
{
return &m_dst;
}
WorldLocation const* SpellCastTargets::GetDstPos() const
{
return &m_dst._position;
}
void SpellCastTargets::SetDst(float x, float y, float z, float orientation, uint32 mapId)
{
m_dst = SpellDestination(x, y, z, orientation, mapId);
m_targetMask |= TARGET_FLAG_DEST_LOCATION;
}
void SpellCastTargets::SetDst(Position const& pos)
{
m_dst = SpellDestination(pos);
m_targetMask |= TARGET_FLAG_DEST_LOCATION;
}
void SpellCastTargets::SetDst(WorldObject const& wObj)
{
m_dst = SpellDestination(wObj);
m_targetMask |= TARGET_FLAG_DEST_LOCATION;
}
void SpellCastTargets::SetDst(SpellDestination const& spellDest)
{
m_dst = spellDest;
m_targetMask |= TARGET_FLAG_DEST_LOCATION;
}
void SpellCastTargets::SetDst(SpellCastTargets const& spellTargets)
{
m_dst = spellTargets.m_dst;
m_targetMask |= TARGET_FLAG_DEST_LOCATION;
}
void SpellCastTargets::ModDst(Position const& pos)
{
ASSERT(m_targetMask & TARGET_FLAG_DEST_LOCATION);
m_dst.Relocate(pos);
}
void SpellCastTargets::ModDst(SpellDestination const& spellDest)
{
ASSERT(m_targetMask & TARGET_FLAG_DEST_LOCATION);
m_dst = spellDest;
}
void SpellCastTargets::RemoveDst()
{
m_targetMask &= ~(TARGET_FLAG_DEST_LOCATION);
}
void SpellCastTargets::Update(Unit* caster)
{
m_objectTarget = !m_objectTargetGUID.IsEmpty() ? ((m_objectTargetGUID == caster->GetGUID()) ? caster : ObjectAccessor::GetWorldObject(*caster, m_objectTargetGUID)) : NULL;
m_itemTarget = NULL;
if (caster->GetTypeId() == TYPEID_PLAYER)
{
Player* player = caster->ToPlayer();
if (m_targetMask & TARGET_FLAG_ITEM)
m_itemTarget = player->GetItemByGuid(m_itemTargetGUID);
else if (m_targetMask & TARGET_FLAG_TRADE_ITEM)
{
if (m_itemTargetGUID == ObjectGuid::TradeItem)
if (TradeData* pTrade = player->GetTradeData())
m_itemTarget = pTrade->GetTraderData()->GetItem(TRADE_SLOT_NONTRADED);
}
if (m_itemTarget)
m_itemTargetEntry = m_itemTarget->GetEntry();
}
// update positions by transport move
if (HasSrc() && !m_src._transportGUID.IsEmpty())
{
if (WorldObject* transport = ObjectAccessor::GetWorldObject(*caster, m_src._transportGUID))
{
m_src._position.Relocate(transport);
m_src._position.RelocateOffset(m_src._transportOffset);
}
}
if (HasDst() && !m_dst._transportGUID.IsEmpty())
{
if (WorldObject* transport = ObjectAccessor::GetWorldObject(*caster, m_dst._transportGUID))
{
m_dst._position.Relocate(transport);
m_dst._position.RelocateOffset(m_dst._transportOffset);
}
}
}
void SpellCastTargets::OutDebug() const
{
if (!m_targetMask)
TC_LOG_DEBUG("spells", "No targets");
TC_LOG_DEBUG("spells", "target mask: %u", m_targetMask);
if (m_targetMask & (TARGET_FLAG_UNIT_MASK | TARGET_FLAG_CORPSE_MASK | TARGET_FLAG_GAMEOBJECT_MASK))
TC_LOG_DEBUG("spells", "Object target: %s", m_objectTargetGUID.ToString().c_str());
if (m_targetMask & TARGET_FLAG_ITEM)
TC_LOG_DEBUG("spells", "Item target: %s", m_itemTargetGUID.ToString().c_str());
if (m_targetMask & TARGET_FLAG_TRADE_ITEM)
TC_LOG_DEBUG("spells", "Trade item target: %s", m_itemTargetGUID.ToString().c_str());
if (m_targetMask & TARGET_FLAG_SOURCE_LOCATION)
TC_LOG_DEBUG("spells", "Source location: transport guid:%s trans offset: %s position: %s", m_src._transportGUID.ToString().c_str(), m_src._transportOffset.ToString().c_str(), m_src._position.ToString().c_str());
if (m_targetMask & TARGET_FLAG_DEST_LOCATION)
TC_LOG_DEBUG("spells", "Destination location: transport guid:%s trans offset: %s position: %s", m_dst._transportGUID.ToString().c_str(), m_dst._transportOffset.ToString().c_str(), m_dst._position.ToString().c_str());
if (m_targetMask & TARGET_FLAG_STRING)
TC_LOG_DEBUG("spells", "String: %s", m_strTarget.c_str());
TC_LOG_DEBUG("spells", "speed: %f", m_speed);
TC_LOG_DEBUG("spells", "pitch: %f", m_pitch);
}
SpellValue::SpellValue(Difficulty diff, SpellInfo const* proto)
{
// todo 6.x
SpellEffectInfoVector effects = proto->GetEffectsForDifficulty(diff);
ASSERT(effects.size() <= MAX_SPELL_EFFECTS);
memset(EffectBasePoints, 0, sizeof(EffectBasePoints));
for (SpellEffectInfo const* effect : effects)
if (effect)
EffectBasePoints[effect->EffectIndex] = effect->BasePoints;
MaxAffectedTargets = proto->MaxAffectedTargets;
RadiusMod = 1.0f;
AuraStackAmount = 1;
}
Spell::Spell(Unit* caster, SpellInfo const* info, TriggerCastFlags triggerFlags, ObjectGuid originalCasterGUID, bool skipCheck) :
m_spellInfo(info), m_caster((info->HasAttribute(SPELL_ATTR6_CAST_BY_CHARMER) && caster->GetCharmerOrOwner()) ? caster->GetCharmerOrOwner() : caster),
m_spellValue(new SpellValue(caster->GetMap()->GetDifficultyID(), m_spellInfo)), m_preGeneratedPath(PathGenerator(m_caster))
{
_effects = info->GetEffectsForDifficulty(caster->GetMap()->GetDifficultyID());
m_customError = SPELL_CUSTOM_ERROR_NONE;
m_skipCheck = skipCheck;
m_selfContainer = NULL;
m_referencedFromCurrentSpell = false;
m_executedCurrently = false;
m_needComboPoints = m_spellInfo->NeedsComboPoints();
m_comboPointGain = 0;
m_delayStart = 0;
m_delayAtDamageCount = 0;
m_applyMultiplierMask = 0;
m_auraScaleMask = 0;
memset(m_damageMultipliers, 0, sizeof(m_damageMultipliers));
// Get data for type of attack
switch (m_spellInfo->DmgClass)
{
case SPELL_DAMAGE_CLASS_MELEE:
if (m_spellInfo->HasAttribute(SPELL_ATTR3_REQ_OFFHAND))
m_attackType = OFF_ATTACK;
else
m_attackType = BASE_ATTACK;
break;
case SPELL_DAMAGE_CLASS_RANGED:
m_attackType = m_spellInfo->IsRangedWeaponSpell() ? RANGED_ATTACK : BASE_ATTACK;
break;
default:
// Wands
if (m_spellInfo->HasAttribute(SPELL_ATTR2_AUTOREPEAT_FLAG))
m_attackType = RANGED_ATTACK;
else
m_attackType = BASE_ATTACK;
break;
}
m_spellSchoolMask = info->GetSchoolMask(); // Can be override for some spell (wand shoot for example)
if (m_attackType == RANGED_ATTACK)
// wand case
if ((m_caster->getClassMask() & CLASSMASK_WAND_USERS) != 0 && m_caster->GetTypeId() == TYPEID_PLAYER)
if (Item* pItem = m_caster->ToPlayer()->GetWeaponForAttack(RANGED_ATTACK))
m_spellSchoolMask = SpellSchoolMask(1 << pItem->GetTemplate()->GetDamageType());
if (!originalCasterGUID.IsEmpty())
m_originalCasterGUID = originalCasterGUID;
else
m_originalCasterGUID = m_caster->GetGUID();
if (m_originalCasterGUID == m_caster->GetGUID())
m_originalCaster = m_caster;
else
{
m_originalCaster = ObjectAccessor::GetUnit(*m_caster, m_originalCasterGUID);
if (m_originalCaster && !m_originalCaster->IsInWorld())
m_originalCaster = NULL;
}
m_spellState = SPELL_STATE_NULL;
_triggeredCastFlags = triggerFlags;
if (info->HasAttribute(SPELL_ATTR4_CAN_CAST_WHILE_CASTING))
_triggeredCastFlags = TriggerCastFlags(uint32(_triggeredCastFlags) | TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_CAST_DIRECTLY);
m_CastItem = NULL;
m_castItemGUID.Clear();
m_castItemEntry = 0;
unitTarget = NULL;
itemTarget = NULL;
gameObjTarget = NULL;
destTarget = NULL;
damage = 0;
variance = 0.0f;
effectHandleMode = SPELL_EFFECT_HANDLE_LAUNCH;
effectInfo = nullptr;
m_diminishLevel = DIMINISHING_LEVEL_1;
m_diminishGroup = DIMINISHING_NONE;
m_damage = 0;
m_healing = 0;
m_procAttacker = 0;
m_procVictim = 0;
m_procEx = 0;
focusObject = NULL;
m_cast_count = 0;
memset(m_misc.Raw.Data, 0, sizeof(m_misc.Raw.Data));
m_SpellVisual = m_spellInfo->GetSpellXSpellVisualId(caster->GetMap()->GetDifficultyID());
m_preCastSpell = 0;
m_triggeredByAuraSpell = NULL;
m_spellAura = NULL;
//Auto Shot & Shoot (wand)
m_autoRepeat = m_spellInfo->IsAutoRepeatRangedSpell();
m_runesState = 0;
m_casttime = 0; // setup to correct value in Spell::prepare, must not be used before.
m_timer = 0; // will set to castime in prepare
m_channeledDuration = 0; // will be setup in Spell::handle_immediate
m_immediateHandled = false;
m_channelTargetEffectMask = 0;
// Determine if spell can be reflected back to the caster
// Patch 1.2 notes: Spell Reflection no longer reflects abilities
m_canReflect = m_spellInfo->DmgClass == SPELL_DAMAGE_CLASS_MAGIC && !m_spellInfo->HasAttribute(SPELL_ATTR0_ABILITY)
&& !m_spellInfo->HasAttribute(SPELL_ATTR1_CANT_BE_REFLECTED) && !m_spellInfo->HasAttribute(SPELL_ATTR0_UNAFFECTED_BY_INVULNERABILITY)
&& !m_spellInfo->IsPassive() && !m_spellInfo->IsPositive();
CleanupTargetList();
CleanupExecuteLogList();
for (uint8 i = 0; i < MAX_SPELL_EFFECTS; ++i)
m_destTargets[i] = SpellDestination(*m_caster);
}
Spell::~Spell()
{
// unload scripts
while (!m_loadedScripts.empty())
{
std::list<SpellScript*>::iterator itr = m_loadedScripts.begin();
(*itr)->_Unload();
delete (*itr);
m_loadedScripts.erase(itr);
}
if (m_referencedFromCurrentSpell && m_selfContainer && *m_selfContainer == this)
{
// Clean the reference to avoid later crash.
// If this error is repeating, we may have to add an ASSERT to better track down how we get into this case.
TC_LOG_ERROR("spells", "SPELL: deleting spell for spell ID %u. However, spell still referenced.", m_spellInfo->Id);
*m_selfContainer = NULL;
}
if (m_caster && m_caster->GetTypeId() == TYPEID_PLAYER)
ASSERT(m_caster->ToPlayer()->m_spellModTakingSpell != this);
delete m_spellValue;
CleanupExecuteLogList();
}
void Spell::InitExplicitTargets(SpellCastTargets const& targets)
{
m_targets = targets;
m_targets.SetOrigUnitTarget(m_targets.GetUnitTarget());
// this function tries to correct spell explicit targets for spell
// client doesn't send explicit targets correctly sometimes - we need to fix such spells serverside
// this also makes sure that we correctly send explicit targets to client (removes redundant data)
uint32 neededTargets = m_spellInfo->GetExplicitTargetMask();
if (WorldObject* target = m_targets.GetObjectTarget())
{
// check if object target is valid with needed target flags
// for unit case allow corpse target mask because player with not released corpse is a unit target
if ((target->ToUnit() && !(neededTargets & (TARGET_FLAG_UNIT_MASK | TARGET_FLAG_CORPSE_MASK)))
|| (target->ToGameObject() && !(neededTargets & TARGET_FLAG_GAMEOBJECT_MASK))
|| (target->ToCorpse() && !(neededTargets & TARGET_FLAG_CORPSE_MASK)))
m_targets.RemoveObjectTarget();
}
else
{
// try to select correct unit target if not provided by client or by serverside cast
if (neededTargets & (TARGET_FLAG_UNIT_MASK))
{
Unit* unit = NULL;
// try to use player selection as a target
if (Player* playerCaster = m_caster->ToPlayer())
{
// selection has to be found and to be valid target for the spell
if (Unit* selectedUnit = ObjectAccessor::GetUnit(*m_caster, playerCaster->GetTarget()))
if (m_spellInfo->CheckExplicitTarget(m_caster, selectedUnit) == SPELL_CAST_OK)
unit = selectedUnit;
}
// try to use attacked unit as a target
else if ((m_caster->GetTypeId() == TYPEID_UNIT) && neededTargets & (TARGET_FLAG_UNIT_ENEMY | TARGET_FLAG_UNIT))
unit = m_caster->GetVictim();
// didn't find anything - let's use self as target
if (!unit && neededTargets & (TARGET_FLAG_UNIT_RAID | TARGET_FLAG_UNIT_PARTY | TARGET_FLAG_UNIT_ALLY))
unit = m_caster;
m_targets.SetUnitTarget(unit);
}
}
// check if spell needs dst target
if (neededTargets & TARGET_FLAG_DEST_LOCATION)
{
// and target isn't set
if (!m_targets.HasDst())
{
// try to use unit target if provided
if (WorldObject* target = targets.GetObjectTarget())
m_targets.SetDst(*target);
// or use self if not available
else
m_targets.SetDst(*m_caster);
}
}
else
m_targets.RemoveDst();
if (neededTargets & TARGET_FLAG_SOURCE_LOCATION)
{
if (!targets.HasSrc())
m_targets.SetSrc(*m_caster);
}
else
m_targets.RemoveSrc();
}
void Spell::SelectExplicitTargets()
{
// here go all explicit target changes made to explicit targets after spell prepare phase is finished
if (Unit* target = m_targets.GetUnitTarget())
{
// check for explicit target redirection, for Grounding Totem for example
if (m_spellInfo->GetExplicitTargetMask() & TARGET_FLAG_UNIT_ENEMY
|| (m_spellInfo->GetExplicitTargetMask() & TARGET_FLAG_UNIT && !m_spellInfo->IsPositive()))
{
Unit* redirect;
switch (m_spellInfo->DmgClass)
{
case SPELL_DAMAGE_CLASS_MAGIC:
redirect = m_caster->GetMagicHitRedirectTarget(target, m_spellInfo);
break;
case SPELL_DAMAGE_CLASS_MELEE:
case SPELL_DAMAGE_CLASS_RANGED:
redirect = m_caster->GetMeleeHitRedirectTarget(target, m_spellInfo);
break;
default:
redirect = NULL;
break;
}
if (redirect && (redirect != target))
m_targets.SetUnitTarget(redirect);
}
}
}
void Spell::SelectSpellTargets()
{
// select targets for cast phase
SelectExplicitTargets();
uint32 processedAreaEffectsMask = 0;
for (SpellEffectInfo const* effect : GetEffects())
{
if (!effect)
continue;
// not call for empty effect.
// Also some spells use not used effect targets for store targets for dummy effect in triggered spells
if (!effect->IsEffect())
continue;
// set expected type of implicit targets to be sent to client
uint32 implicitTargetMask = GetTargetFlagMask(effect->TargetA.GetObjectType()) | GetTargetFlagMask(effect->TargetB.GetObjectType());
if (implicitTargetMask & TARGET_FLAG_UNIT)
m_targets.SetTargetFlag(TARGET_FLAG_UNIT);
if (implicitTargetMask & (TARGET_FLAG_GAMEOBJECT | TARGET_FLAG_GAMEOBJECT_ITEM))
m_targets.SetTargetFlag(TARGET_FLAG_GAMEOBJECT);
SelectEffectImplicitTargets(SpellEffIndex(effect->EffectIndex), effect->TargetA, processedAreaEffectsMask);
SelectEffectImplicitTargets(SpellEffIndex(effect->EffectIndex), effect->TargetB, processedAreaEffectsMask);
// Select targets of effect based on effect type
// those are used when no valid target could be added for spell effect based on spell target type
// some spell effects use explicit target as a default target added to target map (like SPELL_EFFECT_LEARN_SPELL)
// some spell effects add target to target map only when target type specified (like SPELL_EFFECT_WEAPON)
// some spell effects don't add anything to target map (confirmed with sniffs) (like SPELL_EFFECT_DESTROY_ALL_TOTEMS)
SelectEffectTypeImplicitTargets(effect->EffectIndex);
if (m_targets.HasDst())
AddDestTarget(*m_targets.GetDst(), effect->EffectIndex);
if (m_spellInfo->IsChanneled())
{
uint32 mask = (1 << effect->EffectIndex);
for (std::vector<TargetInfo>::iterator ihit = m_UniqueTargetInfo.begin(); ihit != m_UniqueTargetInfo.end(); ++ihit)
{
if (ihit->effectMask & mask)
{
m_channelTargetEffectMask |= mask;
break;
}
}
}
else if (m_auraScaleMask)
{
bool checkLvl = !m_UniqueTargetInfo.empty();
for (std::vector<TargetInfo>::iterator ihit = m_UniqueTargetInfo.begin(); ihit != m_UniqueTargetInfo.end();)
{
// remove targets which did not pass min level check
if (m_auraScaleMask && ihit->effectMask == m_auraScaleMask)
{
// Do not check for selfcast
if (!ihit->scaleAura && ihit->targetGUID != m_caster->GetGUID())
{
ihit = m_UniqueTargetInfo.erase(ihit);
continue;
}
}
++ihit;
}
if (checkLvl && m_UniqueTargetInfo.empty())
{
SendCastResult(SPELL_FAILED_LOWLEVEL);
finish(false);
}
}
}
if (m_targets.HasDst())
{
if (m_targets.HasTraj())
{
float speed = m_targets.GetSpeedXY();
if (speed > 0.0f)
m_delayMoment = uint64(std::floor(m_targets.GetDist2d() / speed * 1000.0f));
}
else if (m_spellInfo->Speed > 0.0f)
{
float dist = m_caster->GetDistance(*m_targets.GetDstPos());
if (!m_spellInfo->HasAttribute(SPELL_ATTR9_SPECIAL_DELAY_CALCULATION))
m_delayMoment = uint64(std::floor(dist / m_spellInfo->Speed * 1000.0f));
else
m_delayMoment = uint64(m_spellInfo->Speed * 1000.0f);
}
}
}
void Spell::SelectEffectImplicitTargets(SpellEffIndex effIndex, SpellImplicitTargetInfo const& targetType, uint32& processedEffectMask)
{
if (!targetType.GetTarget())
return;
uint32 effectMask = 1 << effIndex;
// set the same target list for all effects
// some spells appear to need this, however this requires more research
switch (targetType.GetSelectionCategory())
{
case TARGET_SELECT_CATEGORY_NEARBY:
case TARGET_SELECT_CATEGORY_CONE:
case TARGET_SELECT_CATEGORY_AREA:
// targets for effect already selected
if (effectMask & processedEffectMask)
return;
if (SpellEffectInfo const* _effect = GetEffect(effIndex))
{
// choose which targets we can select at once
for (SpellEffectInfo const* effect : GetEffects())
{
//for (uint32 j = effIndex + 1; j < MAX_SPELL_EFFECTS; ++j)
if (!effect || effect->EffectIndex <= uint32(effIndex))
continue;
if (effect->IsEffect() &&
_effect->TargetA.GetTarget() == effect->TargetA.GetTarget() &&
_effect->TargetB.GetTarget() == effect->TargetB.GetTarget() &&
_effect->ImplicitTargetConditions == effect->ImplicitTargetConditions &&
_effect->CalcRadius(m_caster) == effect->CalcRadius(m_caster) &&
CheckScriptEffectImplicitTargets(effIndex, effect->EffectIndex))
{
effectMask |= 1 << effect->EffectIndex;
}
}
}
processedEffectMask |= effectMask;
break;
default:
break;
}
switch (targetType.GetSelectionCategory())
{
case TARGET_SELECT_CATEGORY_CHANNEL:
SelectImplicitChannelTargets(effIndex, targetType);
break;
case TARGET_SELECT_CATEGORY_NEARBY:
SelectImplicitNearbyTargets(effIndex, targetType, effectMask);
break;
case TARGET_SELECT_CATEGORY_CONE:
SelectImplicitConeTargets(effIndex, targetType, effectMask);
break;
case TARGET_SELECT_CATEGORY_AREA:
SelectImplicitAreaTargets(effIndex, targetType, effectMask);
break;
case TARGET_SELECT_CATEGORY_DEFAULT:
switch (targetType.GetObjectType())
{
case TARGET_OBJECT_TYPE_SRC:
switch (targetType.GetReferenceType())
{
case TARGET_REFERENCE_TYPE_CASTER:
m_targets.SetSrc(*m_caster);
break;
default:
ASSERT(false && "Spell::SelectEffectImplicitTargets: received not implemented select target reference type for TARGET_TYPE_OBJECT_SRC");
break;
}
break;
case TARGET_OBJECT_TYPE_DEST:
switch (targetType.GetReferenceType())
{
case TARGET_REFERENCE_TYPE_CASTER:
SelectImplicitCasterDestTargets(effIndex, targetType);
break;
case TARGET_REFERENCE_TYPE_TARGET:
SelectImplicitTargetDestTargets(effIndex, targetType);
break;
case TARGET_REFERENCE_TYPE_DEST:
SelectImplicitDestDestTargets(effIndex, targetType);
break;
default:
ASSERT(false && "Spell::SelectEffectImplicitTargets: received not implemented select target reference type for TARGET_TYPE_OBJECT_DEST");
break;
}
break;
default:
switch (targetType.GetReferenceType())
{
case TARGET_REFERENCE_TYPE_CASTER:
SelectImplicitCasterObjectTargets(effIndex, targetType);
break;
case TARGET_REFERENCE_TYPE_TARGET:
SelectImplicitTargetObjectTargets(effIndex, targetType);
break;
default:
ASSERT(false && "Spell::SelectEffectImplicitTargets: received not implemented select target reference type for TARGET_TYPE_OBJECT");
break;
}
break;
}
break;
case TARGET_SELECT_CATEGORY_NYI:
TC_LOG_DEBUG("spells", "SPELL: target type %u, found in spellID %u, effect %u is not implemented yet!", m_spellInfo->Id, effIndex, targetType.GetTarget());
break;
default:
ASSERT(false && "Spell::SelectEffectImplicitTargets: received not implemented select target category");
break;
}
}
void Spell::SelectImplicitChannelTargets(SpellEffIndex effIndex, SpellImplicitTargetInfo const& targetType)
{
if (targetType.GetReferenceType() != TARGET_REFERENCE_TYPE_CASTER)
{
ASSERT(false && "Spell::SelectImplicitChannelTargets: received not implemented target reference type");
return;
}
Spell* channeledSpell = m_originalCaster->GetCurrentSpell(CURRENT_CHANNELED_SPELL);
if (!channeledSpell)
{
TC_LOG_DEBUG("spells", "Spell::SelectImplicitChannelTargets: cannot find channel spell for spell ID %u, effect %u", m_spellInfo->Id, effIndex);
return;
}
switch (targetType.GetTarget())
{
case TARGET_UNIT_CHANNEL_TARGET:
{
WorldObject* target = ObjectAccessor::GetUnit(*m_caster, m_originalCaster->GetChannelObjectGuid());
CallScriptObjectTargetSelectHandlers(target, effIndex, targetType);
// unit target may be no longer avalible - teleported out of map for example
if (target && target->ToUnit())
AddUnitTarget(target->ToUnit(), 1 << effIndex);
else
TC_LOG_DEBUG("spells", "SPELL: cannot find channel spell target for spell ID %u, effect %u", m_spellInfo->Id, effIndex);
break;
}
case TARGET_DEST_CHANNEL_TARGET:
if (channeledSpell->m_targets.HasDst())
m_targets.SetDst(channeledSpell->m_targets);
else if (WorldObject* target = ObjectAccessor::GetWorldObject(*m_caster, m_originalCaster->GetChannelObjectGuid()))
{
CallScriptObjectTargetSelectHandlers(target, effIndex, targetType);
if (target)
m_targets.SetDst(*target);
}
else
TC_LOG_DEBUG("spells", "SPELL: cannot find channel spell destination for spell ID %u, effect %u", m_spellInfo->Id, effIndex);
break;
case TARGET_DEST_CHANNEL_CASTER:
m_targets.SetDst(*channeledSpell->GetCaster());
break;
default:
ASSERT(false && "Spell::SelectImplicitChannelTargets: received not implemented target type");
break;
}
}
void Spell::SelectImplicitNearbyTargets(SpellEffIndex effIndex, SpellImplicitTargetInfo const& targetType, uint32 effMask)
{