Core/Spells: Implemented SPELL_ATTR5_NOT_AVAILABLE_WHILE_CHARMED

Port From (https://github.com/TrinityCore/TrinityCore/commit/076c63c766d10697cea17da8bd5194862a682cbe)

Source/Framework/Constants/Spells/SpellConst.cs

@@ -1771,7 +1771,7 @@ namespace Framework.Constants
         ImpliedTargeting = 0x800, // Implied Targeting (Client Only)
         MeleeChainTargeting = 0x1000, // Melee Chain Targeting
         SpellHasteAffectsPeriodic = 0x2000, // Spell Haste Affects Periodic
-        NotAvailableWhileCharmed = 0x4000, /*Nyi*/ // Not Available While Charmed
+        NotAvailableWhileCharmed = 0x4000, // Not Available While Charmed
         TreatAsAreaEffect = 0x8000, /*Nyi*/ // Treat As Area Effect
         AuraAffectsNotJustReqEquippedItem = 0x10000, // Aura Affects Not Just Req. Equipped Item
         AllowWhileFleeing = 0x20000, // Allow While Fleeing

Source/Game/Entities/Player/Player.cs

@@ -1096,6 +1096,9 @@ namespace Game.Entities
                 if (spellInfo == null)
                     continue;
 
+                if (spellInfo.HasAttribute(SpellAttr5.NotAvailableWhileCharmed))
+                    continue;
+
                 if (!Global.ConditionMgr.IsObjectMeetingVehicleSpellConditions(vehicle.GetEntry(), spellId, this, vehicle))
                 {
                     Log.outDebug(LogFilter.Condition, "VehicleSpellInitialize: conditions not met for Vehicle entry {0} spell {1}", vehicle.ToCreature().GetEntry(), spellId);

Source/Game/Entities/Unit/CharmInfo.cs

@@ -110,6 +110,9 @@ namespace Game.Entities
                     SpellInfo spellInfo = Global.SpellMgr.GetSpellInfo(spellId, _unit.GetMap().GetDifficultyID());
                     if (spellInfo != null)
                     {
+                        if (spellInfo.HasAttribute(SpellAttr5.NotAvailableWhileCharmed))
+                            continue;
+
                         if (spellInfo.IsPassive())
                             _unit.CastSpell(_unit, spellInfo.Id, new CastSpellExtraArgs(true));
                         else
@@ -142,6 +145,9 @@ namespace Game.Entities
                     continue;
                 }
 
+                if (spellInfo.HasAttribute(SpellAttr5.NotAvailableWhileCharmed))
+                    continue;
+
                 if (spellInfo.IsPassive())
                 {
                     _unit.CastSpell(_unit, spellInfo.Id, new CastSpellExtraArgs(true));

Source/Game/Spells/Spell.cs

@@ -4703,6 +4703,9 @@ namespace Game.Spells
             Unit unitCaster = m_caster.ToUnit();
             if (unitCaster != null)
             {
+                if (m_spellInfo.HasAttribute(SpellAttr5.NotAvailableWhileCharmed) && unitCaster.IsCharmed())
+                    return SpellCastResult.Charmed;
+
                 // only check at first call, Stealth auras are already removed at second call
                 // for now, ignore triggered spells
                 if (strict && !_triggeredCastFlags.HasFlag(TriggerCastFlags.IgnoreShapeshift))
@@ -5659,7 +5662,7 @@ namespace Game.Spells
                             return SpellCastResult.NoPet;
 
                         if (!pet.GetCharmerGUID().IsEmpty())
-                            return SpellCastResult.Charmed;
+                            return SpellCastResult.AlreadyHaveCharm;
                         break;
                     }
                     case AuraType.ModPossess:
@@ -5671,7 +5674,7 @@ namespace Game.Spells
                             return SpellCastResult.BadTargets;
 
                         if (!unitCaster1.GetCharmerGUID().IsEmpty())
-                            return SpellCastResult.Charmed;
+                            return SpellCastResult.AlreadyHaveCharm;
 
                         if (spellEffectInfo.ApplyAuraName == AuraType.ModCharm || spellEffectInfo.ApplyAuraName == AuraType.ModPossess)
                         {