Core/ScriptSystem: Add a PlayerScript::OnSpellCast(Player *player, Spell *spell, bool skipCheck) function.

Requested by Zor.

--HG--
branch : trunk

src/server/game/Spells/Spell.cpp

@@ -3133,6 +3133,11 @@ void Spell::cast(bool skipCheck)
         }
     }
 
+    // now that we've done the basic check, now run the scripts
+    // should be done before the spell is actually executed
+    if (Player *playerCaster = m_caster->ToPlayer())
+        sScriptMgr.OnPlayerSpellCast(playerCaster, this, skipCheck);
+
     SetExecutedCurrently(true);
 
     if (m_caster->GetTypeId() != TYPEID_PLAYER && m_targets.getUnitTarget() && m_targets.getUnitTarget() != m_caster)