From 3136de4850c8cb538795b803cd3aec06a41ef83a Mon Sep 17 00:00:00 2001
From: Ovahlord <dreadkiller@gmx.de>
Date: Tue, 17 Apr 2018 16:49:48 +0200
Subject: [PATCH] Core/Creature: take HoverHeight into account when calculating
 ground height for flying, hovering or levitating creatures

---
 src/server/game/Entities/Object/Object.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/server/game/Entities/Object/Object.cpp b/src/server/game/Entities/Object/Object.cpp
index 795587c1f49..ee3af2f8431 100644
--- a/src/server/game/Entities/Object/Object.cpp
+++ b/src/server/game/Entities/Object/Object.cpp
@@ -1671,6 +1671,13 @@ void WorldObject::UpdateAllowedPositionZ(float x, float y, float &z) const
                 if (z < ground_z)
                     z = ground_z;
             }
+
+            // Creatures that are simulating flight effects or actual flight should use HoverHeight
+            if (ToUnit() && (ToUnit()->IsFlying() || ToUnit()->IsHovering() || ToUnit()->IsLevitating()))
+            {
+                uint32 hoverHeight = GetFloatValue(UNIT_FIELD_HOVERHEIGHT);
+                z += hoverHeight;
+            }
             break;
         }
         case TYPEID_PLAYER: