Revert "Core/Entities: improve unit on death movement"

This reverts commit f4d8105.

Author: Shauren

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

@@ -2006,6 +2006,13 @@ void Creature::setDeathState(DeathState s)
         if (m_formation && m_formation->GetLeader() == this)
             m_formation->FormationReset(true);
 
+        bool needsFalling = (IsFlying() || IsHovering()) && !IsUnderWater();
+        SetHover(false, false);
+        SetDisableGravity(false, false);
+
+        if (needsFalling)
+            GetMotionMaster()->MoveFall();
+
         Unit::setDeathState(CORPSE);
     }
     else if (s == JUST_RESPAWNED)

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

@@ -8760,28 +8760,9 @@ void Unit::setDeathState(DeathState s)
         if (!isOnVehicle)
         {
             if (GetMotionMaster()->StopOnDeath())
-            {
-                if (!HasUnitState(UNIT_STATE_ROOT | UNIT_STATE_STUNNED) && GetTypeId() == TYPEID_UNIT && ToCreature()->IsInAir(*this, GetFloorZ(), false) && !IsUnderWater())
-                {
-                    GetMotionMaster()->AddFlag(MOTIONMASTER_FLAG_STATIC_PREVENT_INITIALIZATION);
-                    SetFall(true);
-                    Movement::MoveSplineInit init(this);
-                    init.MoveTo(GetPositionX(), GetPositionY(), GetFloorZ(), false, true);
-                    init.SetFall();
-                    init.Launch();
-                }
-                else
-                {
-                    StopMoving();
-                    DisableSpline();
-                }
-            }
+                DisableSpline();
         }
 
-        SetDisableGravity(false);
-        SetCanFly(false);
-        SetHover(false);
-
         // without this when removing IncreaseMaxHealth aura player may stuck with 1 hp
         // do not why since in IncreaseMaxHealth currenthealth is checked
         SetHealth(0);

src/server/game/Movement/MotionMaster.cpp

@@ -563,6 +563,8 @@ bool MotionMaster::StopOnDeath()
         MoveIdle();
     }
 
+    _owner->StopMoving();
+
     return true;
 }