Core/Creatures: Remove hover on death

Port From (https://github.com/TrinityCore/TrinityCore/commit/a91edcb9524b53f027a8ef8c247a443a9bb42f1e)

Source/Game/Entities/Creature/Creature.cs

@@ -1824,7 +1824,10 @@ namespace Game.Entities
                 if (m_formation != null && m_formation.GetLeader() == this)
                     m_formation.FormationReset(true);
 
-                if ((CanFly() || IsFlying()))
+                bool needsFalling = IsFlying() || IsHovering();
+                SetHover(false);
+
+                if (needsFalling)
                     GetMotionMaster().MoveFall();
 
                 base.SetDeathState(DeathState.Corpse);
@@ -2848,7 +2851,7 @@ namespace Game.Entities
             {
                 SetCanFly(false);
                 SetDisableGravity(false);
-                if (CanHover() || HasAuraType(AuraType.Hover))
+                if (IsAlive() && (CanHover() || HasAuraType(AuraType.Hover)))
                     SetHover(true);
             }
 

Source/Game/Entities/Creature/CreatureData.cs

@@ -362,12 +362,10 @@ namespace Game.Entities
             Rooted = false;
         }
 
-
+        public bool IsGroundAllowed() { return Ground != CreatureGroundMovementType.None; }
-
+        public bool IsSwimAllowed() { return Swim; }
-        bool IsGroundAllowed() { return Ground != CreatureGroundMovementType.None; }
+        public bool IsFlightAllowed() { return Flight != CreatureFlightMovementType.None; }
-        bool IsSwimAllowed() { return Swim; }
+        public bool IsRooted() { return Rooted; }
-        bool IsFlightAllowed() { return Flight != CreatureFlightMovementType.None; }
-        bool IsRooted() { return Rooted; }
 
         public override string ToString()
         {

Source/Game/Entities/Unit/Unit.Movement.cs

@@ -989,7 +989,9 @@ namespace Game.Entities
             else
             {
                 RemoveUnitMovementFlag(MovementFlag.Hover);
-                if (hoverHeight != 0)
+
+                //! Dying creatures will MoveFall from setDeathState
+                if (hoverHeight != 0 && (!IsDying() || !IsUnit()))
                 {
                     float newZ = GetPositionZ() - hoverHeight;
                     UpdateAllowedPositionZ(GetPositionX(), GetPositionY(), ref newZ);

Source/Game/Globals/ObjectManager.cs

@@ -1813,12 +1813,15 @@ namespace Game
             if (!fields.IsNull(60))
                 creature.Movement.Ground = (CreatureGroundMovementType)fields.Read<byte>(60);
 
-            creature.Movement.Swim = fields.Read<bool>(61);
+            if (!fields.IsNull(61))
+                creature.Movement.Swim = fields.Read<bool>(61);
+
             if (!fields.IsNull(62))
                 creature.Movement.Flight = (CreatureFlightMovementType)fields.Read<byte>(62);
 
+            if (!fields.IsNull(63))
+                creature.Movement.Rooted = fields.Read<bool>(63);
 
-            creature.Movement.Rooted = fields.Read<uint>(63);
             creature.HoverHeight = fields.Read<float>(64);
             creature.ModHealth = fields.Read<float>(65);
             creature.ModHealthExtra = fields.Read<float>(66);
@@ -4966,7 +4969,7 @@ namespace Game
         }
         public CreatureMovementData GetCreatureMovementOverride(ulong spawnId)
         {
-            return creatureMovementOverrides.lookupbykey(spawnId);
+            return creatureMovementOverrides.LookupByKey(spawnId);
         }
         public EquipmentInfo GetEquipmentInfo(uint entry, int id)
         {