Server/Unit: Implement UNIT_FLAG_DISABLE_POWERS for creatures.

Signed-off-by: AriDEV <aridev666@gmail.com>

src/server/game/Entities/Creature/Creature.cpp

@@ -1271,6 +1271,12 @@ bool Creature::LoadCreatureFromDB(uint32 guid, Map* map, bool addToMap)
         SetPower(POWER_MANA, GetMaxPower(POWER_MANA));
     }
 
+    if (HasFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_DISABLE_POWERS))
+    {
+        SetMaxHealth(0);
+        SetMaxPower(POWER_MANA, 0);
+    }
+
     SetHealth(m_deathState == ALIVE ? curhealth : 0);
 
     // checked at creature_template loading

src/server/game/Entities/Unit/Unit.cpp

@@ -11930,7 +11930,9 @@ void Unit::SetHealth(uint32 val)
 
 void Unit::SetMaxHealth(uint32 val)
 {
-    if (!val)
+    if (!val && HasFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_DISABLE_POWERS))
+        val = 0;
+    else
         val = 1;
 
     uint32 health = GetHealth();

src/server/game/Entities/Unit/Unit.h

@@ -648,7 +648,7 @@ enum UnitFlags
     UNIT_FLAG_SKINNABLE = 0x04000000,
     UNIT_FLAG_MOUNT = 0x08000000,
     UNIT_FLAG_UNK_28 = 0x10000000,
-    UNIT_FLAG_UNK_29 = 0x20000000,           // used in Feing Death spell
+    UNIT_FLAG_DISABLE_POWERS = 0x20000000,           // used in Feing Death spell
     UNIT_FLAG_SHEATHE = 0x40000000,
     UNIT_FLAG_UNK_31 = 0x80000000,
     MAX_UNIT_FLAGS = 33

src/server/game/Spells/Auras/SpellAuraEffects.cpp

@@ -2304,7 +2304,7 @@ void AuraEffect::HandleFeignDeath(AuraApplication const* aurApp, uint8 mode, boo
         if (aurApp->GetRemoveMode())
             return;
 
-        target->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_UNK_29);            // blizz like 2.0.x
+        target->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_DISABLE_POWERS);            // blizz like 2.0.x
         target->SetFlag(UNIT_FIELD_FLAGS2, UNIT_FLAG2_FEIGN_DEATH);    // blizz like 2.0.x
         target->SetFlag(OBJECT_FIELD_DYNAMIC_FLAGS, UNIT_DYNFLAG_DEAD);         // blizz like 2.0.x
         target->AddUnitState(UNIT_STATE_DIED);
@@ -2319,7 +2319,7 @@ void AuraEffect::HandleFeignDeath(AuraApplication const* aurApp, uint8 mode, boo
         target->SendMessageToSet(&data, true);
         */
 
-        target->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_UNK_29);         // blizz like 2.0.x
+        target->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_DISABLE_POWERS);         // blizz like 2.0.x
         target->RemoveFlag(UNIT_FIELD_FLAGS2, UNIT_FLAG2_FEIGN_DEATH); // blizz like 2.0.x
         target->RemoveFlag(OBJECT_FIELD_DYNAMIC_FLAGS, UNIT_DYNFLAG_DEAD);      // blizz like 2.0.x
         target->ClearUnitState(UNIT_STATE_DIED);

src/server/scripts/Commands/cs_npc.cpp

@@ -146,7 +146,7 @@ EnumName<UnitFlags> const unitFlags[MAX_UNIT_FLAGS] =
     CREATE_NAMED_ENUM(UNIT_FLAG_SKINNABLE),
     CREATE_NAMED_ENUM(UNIT_FLAG_MOUNT),
     CREATE_NAMED_ENUM(UNIT_FLAG_UNK_28),
-    CREATE_NAMED_ENUM(UNIT_FLAG_UNK_29),
+    CREATE_NAMED_ENUM(UNIT_FLAG_DISABLE_POWERS),
     CREATE_NAMED_ENUM(UNIT_FLAG_SHEATHE),
     CREATE_NAMED_ENUM(UNIT_FLAG_UNK_31)
 };

src/server/scripts/Kalimdor/HallsOfOrigination/boss_earthrager_ptah.cpp

@@ -314,7 +314,7 @@ class spell_earthrager_ptah_explosion : public SpellScriptLoader
         {
             if (Unit* ptah = GetCaster())
             {
-                ptah->SetFlag(UNIT_FIELD_FLAGS, uint32(UNIT_FLAG_NOT_SELECTABLE | UNIT_FLAG_UNK_29 | UNIT_FLAG_UNK_31));
+                ptah->SetFlag(UNIT_FIELD_FLAGS, uint32(UNIT_FLAG_NOT_SELECTABLE | UNIT_FLAG_DISABLE_POWERS | UNIT_FLAG_UNK_31));
                 ptah->SetFlag(UNIT_FIELD_FLAGS2, UNIT_FLAG2_FEIGN_DEATH);
             }
         }
@@ -323,7 +323,7 @@ class spell_earthrager_ptah_explosion : public SpellScriptLoader
         {
             if (Unit* ptah = GetCaster())
             {
-                ptah->RemoveFlag(UNIT_FIELD_FLAGS, uint32(UNIT_FLAG_NOT_SELECTABLE | UNIT_FLAG_UNK_29 | UNIT_FLAG_UNK_31));
+                ptah->RemoveFlag(UNIT_FIELD_FLAGS, uint32(UNIT_FLAG_NOT_SELECTABLE | UNIT_FLAG_DISABLE_POWERS | UNIT_FLAG_UNK_31));
                 ptah->RemoveFlag(UNIT_FIELD_FLAGS2, UNIT_FLAG2_FEIGN_DEATH);
             }
         }

src/server/scripts/Northrend/Ulduar/Ulduar/boss_xt002.cpp

@@ -384,7 +384,7 @@ class boss_xt002 : public CreatureScript
                     heart->CastSpell(heart, SPELL_EXPOSED_HEART, false);    // Channeled
                     heart->ChangeSeat(HEART_VEHICLE_SEAT_EXPOSED, true);
                     heart->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NOT_SELECTABLE);
-                    heart->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_UNK_29);
+                    heart->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_DISABLE_POWERS);
                }
 
                 events.CancelEvent(EVENT_SEARING_LIGHT);
@@ -419,7 +419,7 @@ class boss_xt002 : public CreatureScript
 
                 heart->ChangeSeat(HEART_VEHICLE_SEAT_NORMAL, false);
                 heart->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NOT_SELECTABLE);
-                heart->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_UNK_29);
+                heart->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_DISABLE_POWERS);
                 heart->RemoveAurasDueToSpell(SPELL_EXPOSED_HEART);
 
                 if (!_hardMode)