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[7451] Implement correct work SPELL_AURA_PERIODIC_MANA_LEECH for percent mana cost spells. Author: VladimirMangos

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This is fix work of spell 3034 and 5138.

--HG--
branch : trunk
This commit is contained in:
megamage
2009-03-13 18:29:38 -06:00
parent c3d14c8241
commit 969eab7be4
1 changed files with 20 additions and 9 deletions
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29
src/game/SpellAuras.cpp
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@@ -5737,6 +5737,15 @@ void Aura::PeriodicTick()
}
case SPELL_AURA_PERIODIC_MANA_LEECH:
{
if(m_modifier.m_miscvalue < 0 || m_modifier.m_miscvalue >= MAX_POWERS)
return;
Powers power = Powers(m_modifier.m_miscvalue);
// power type might have changed between aura applying and tick (druid's shapeshift)
if(m_target->getPowerType() != power)
return;
Unit *pCaster = GetCaster();
if(!pCaster)
return;
@@ -5755,18 +5764,20 @@ void Aura::PeriodicTick()
// ignore non positive values (can be result apply spellmods to aura damage
uint32 pdamage = m_modifier.m_amount > 0 ? m_modifier.m_amount : 0;
// Special case: draining x% of mana (up to a maximum of 2*x% of the caster's maximum mana)
// It's mana percent cost spells, m_modifier.m_amount is percent drain from target
if (m_spellProto->ManaCostPercentage)
{
// max value
uint32 maxmana = pCaster->GetMaxPower(power) * pdamage * 2 / 100;
pdamage = m_target->GetMaxPower(power) * pdamage / 100;
if(pdamage > maxmana)
pdamage = maxmana;
}
sLog.outDetail("PeriodicTick: %u (TypeId: %u) power leech of %u (TypeId: %u) for %u dmg inflicted by %u",
GUID_LOPART(GetCasterGUID()), GuidHigh2TypeId(GUID_HIPART(GetCasterGUID())), m_target->GetGUIDLow(), m_target->GetTypeId(), pdamage, GetId());
if(m_modifier.m_miscvalue < 0 || m_modifier.m_miscvalue >= MAX_POWERS)
break;
Powers power = Powers(m_modifier.m_miscvalue);
// power type might have changed between aura applying and tick (druid's shapeshift)
if(m_target->getPowerType() != power)
break;
int32 drain_amount = m_target->GetPower(power) > pdamage ? pdamage : m_target->GetPower(power);
//Viper sting and Drain Life take mana % amount from target, but not bigger than amount*2 of caster mana