Core/SpellScripts: Add BeforeCast, OnCast and AfterCast hooks to SpellScripts.

src/server/game/Spells/Spell.cpp

@@ -3091,6 +3091,8 @@ void Spell::cast(bool skipCheck)
         m_caster->ToPlayer()->SetSpellModTakingSpell(this, true);
     }
 
+    CallScriptBeforeCastHandlers();
+
     // skip check if done already (for instant cast spells for example)
     if (!skipCheck)
     {
@@ -3160,6 +3162,8 @@ void Spell::cast(bool skipCheck)
 
     PrepareTriggersExecutedOnHit();
 
+    CallScriptOnCastHandlers();
+
     // traded items have trade slot instead of guid in m_itemTargetGUID
     // set to real guid to be sent later to the client
     m_targets.UpdateTradeSlotItem();
@@ -3219,6 +3223,8 @@ void Spell::cast(bool skipCheck)
         handle_immediate();
     }
 
+    CallScriptAfterCastHandlers();
+
     if (const std::vector<int32> *spell_triggered = sSpellMgr->GetSpellLinked(m_spellInfo->Id))
     {
         for (std::vector<int32>::const_iterator i = spell_triggered->begin(); i != spell_triggered->end(); ++i)
@@ -6969,7 +6975,6 @@ void Spell::CheckEffectExecuteData()
 
 void Spell::LoadScripts()
 {
-    sLog->outDebug(LOG_FILTER_SPELLS_AURAS, "Spell::LoadScripts");
     sScriptMgr->CreateSpellScripts(m_spellInfo->Id, m_loadedScripts);
     for (std::list<SpellScript*>::iterator itr = m_loadedScripts.begin(); itr != m_loadedScripts.end() ;)
     {
@@ -6980,15 +6985,49 @@ void Spell::LoadScripts()
             m_loadedScripts.erase(bitr);
             continue;
         }
+        sLog->outDebug(LOG_FILTER_SPELLS_AURAS, "Spell::LoadScripts: Script `%s` for spell `%u` is loaded now", (*itr)->_GetScriptName()->c_str(), m_spellInfo->Id);
         (*itr)->Register();
         ++itr;
     }
 }
 
-void Spell::PrepareScriptHitHandlers()
+void Spell::CallScriptBeforeCastHandlers()
 {
     for (std::list<SpellScript*>::iterator scritr = m_loadedScripts.begin(); scritr != m_loadedScripts.end() ; ++scritr)
-        (*scritr)->_InitHit();
+    {
+        (*scritr)->_PrepareScriptCall(SPELL_SCRIPT_HOOK_BEFORE_CAST);
+        std::list<SpellScript::CastHandler>::iterator hookItrEnd = (*scritr)->BeforeCast.end(), hookItr = (*scritr)->BeforeCast.begin();
+        for (; hookItr != hookItrEnd ; ++hookItr)
+            (*hookItr).Call(*scritr);
+
+        (*scritr)->_FinishScriptCall();
+    }
+}
+
+void Spell::CallScriptOnCastHandlers()
+{
+    for (std::list<SpellScript*>::iterator scritr = m_loadedScripts.begin(); scritr != m_loadedScripts.end() ; ++scritr)
+    {
+        (*scritr)->_PrepareScriptCall(SPELL_SCRIPT_HOOK_ON_CAST);
+        std::list<SpellScript::CastHandler>::iterator hookItrEnd = (*scritr)->OnCast.end(), hookItr = (*scritr)->OnCast.begin();
+        for (; hookItr != hookItrEnd ; ++hookItr)
+            (*hookItr).Call(*scritr);
+
+        (*scritr)->_FinishScriptCall();
+    }
+}
+
+void Spell::CallScriptAfterCastHandlers()
+{
+    for (std::list<SpellScript*>::iterator scritr = m_loadedScripts.begin(); scritr != m_loadedScripts.end() ; ++scritr)
+    {
+        (*scritr)->_PrepareScriptCall(SPELL_SCRIPT_HOOK_AFTER_CAST);
+        std::list<SpellScript::CastHandler>::iterator hookItrEnd = (*scritr)->AfterCast.end(), hookItr = (*scritr)->AfterCast.begin();
+        for (; hookItr != hookItrEnd ; ++hookItr)
+            (*hookItr).Call(*scritr);
+
+        (*scritr)->_FinishScriptCall();
+    }
 }
 
 SpellCastResult Spell::CallScriptCheckCastHandlers()
@@ -7010,6 +7049,12 @@ SpellCastResult Spell::CallScriptCheckCastHandlers()
     return retVal;
 }
 
+void Spell::PrepareScriptHitHandlers()
+{
+    for (std::list<SpellScript*>::iterator scritr = m_loadedScripts.begin(); scritr != m_loadedScripts.end() ; ++scritr)
+        (*scritr)->_InitHit();
+}
+
 bool Spell::CallScriptEffectHandlers(SpellEffIndex effIndex, SpellEffectHandleMode mode)
 {
     // execute script effect handler hooks and check if effects was prevented