Core/Auras: Expanding functionality of SPELL_GROUP_STACK_RULE_EXCLUSIVE_SAME_EFFECT to be able to take care of aura effects inside their handlers

Currently handled:
- SPELL_AURA_MOD_RESISTANCE_PCT
- SPELL_AURA_MOD_STAT
- SPELL_AURA_MELEE_SLOW
- SPELL_AURA_MOD_MELEE_HASTE
- SPELL_AURA_MOD_DAMAGE_PERCENT_DONE

Necessary to allow stack rules such as BoK/BoS/Bok-Drums and others to be all in a target with all of the aura effects, yet with only the 'highest' effect active

1 files changed, 9 insertions, 0 deletions

diff --git a/src/server/game/Spells/SpellMgr.cpp b/src/server/game/Spells/SpellMgr.cpp
index 9eadd178eb3..04de93bae0c 100644
--- a/src/server/game/Spells/SpellMgr.cpp
+++ b/src/server/game/Spells/SpellMgr.cpp
@@ -765,6 +765,15 @@ SpellGroupStackRule SpellMgr::CheckSpellGroupStackRules(SpellInfo const* spellIn
     return rule;
 }
 
+SpellGroupStackRule SpellMgr::GetSpellGroupStackRule(SpellGroup group) const
+{
+    SpellGroupStackMap::const_iterator itr = mSpellGroupStack.find(group);
+    if (itr != mSpellGroupStack.end())
+        return itr->second;
+
+    return SPELL_GROUP_STACK_RULE_DEFAULT;
+}
+
 SpellProcEventEntry const* SpellMgr::GetSpellProcEvent(uint32 spellId) const
 {
     SpellProcEventMap::const_iterator itr = mSpellProcEventMap.find(spellId);