Partial: Core/Entities: Reduce the probability of units dropping under the map

Port From (https://github.com/TrinityCore/TrinityCore/commit/69edf282fa777912385dbb4d921b9f3a8f92a00e)

Source/Game/Entities/Object/WorldObject.cs

@@ -575,7 +575,7 @@ namespace Game.Entities
                 //    *data << *areaTrigger->GetMovementScript(); // AreaTriggerMovementScriptInfo
 
                 if (hasOrbit)
-                   areaTrigger.GetCircularMovementInfo().Value.Write(data);
+                    areaTrigger.GetCircularMovementInfo().Value.Write(data);
             }
 
             if (flags.GameObject)
@@ -1011,8 +1011,8 @@ namespace Game.Entities
                 transport.RemovePassenger(this);
         }
 
-        public uint GetZoneId()  { return m_zoneId; }
+        public uint GetZoneId() { return m_zoneId; }
-        public uint GetAreaId()  { return m_areaId; }
+        public uint GetAreaId() { return m_areaId; }
 
         public void GetZoneAndAreaId(out uint zoneid, out uint areaid) { zoneid = m_zoneId; areaid = m_areaId; }
 
@@ -1608,7 +1608,7 @@ namespace Game.Entities
             return a != null && b != null && a.IsInPhase(b);
         }
 
-        public virtual float GetCombatReach() { return 0.0f;    } // overridden (only) in Unit
+        public virtual float GetCombatReach() { return 0.0f; } // overridden (only) in Unit
         public PhaseShift GetPhaseShift() { return _phaseShift; }
         public void SetPhaseShift(PhaseShift phaseShift) { _phaseShift = new PhaseShift(phaseShift); }
         public PhaseShift GetSuppressedPhaseShift() { return _suppressedPhaseShift; }
@@ -1791,7 +1791,7 @@ namespace Game.Entities
         public virtual float GetStationaryZ() { return GetPositionZ(); }
         public virtual float GetStationaryO() { return GetOrientation(); }
 
-        public virtual float GetCollisionHeight() { return 0.0f;    }
+        public virtual float GetCollisionHeight() { return 0.0f; }
         public float GetMidsectionHeight() { return GetCollisionHeight() / 2.0f; }
 
         public virtual bool IsNeverVisibleFor(WorldObject seer) { return !IsInWorld; }
@@ -1941,7 +1941,7 @@ namespace Game.Entities
                 oz += GetCollisionHeight();
             }
             else
-                obj.GetHitSpherePointFor(new (GetPositionX(), GetPositionY(), GetPositionZ() + GetCollisionHeight()), out ox, out oy, out oz);
+                obj.GetHitSpherePointFor(new(GetPositionX(), GetPositionY(), GetPositionZ() + GetCollisionHeight()), out ox, out oy, out oz);
 
             float x, y, z;
             if (IsPlayer())
@@ -1950,7 +1950,7 @@ namespace Game.Entities
                 z += GetCollisionHeight();
             }
             else
-                GetHitSpherePointFor(new (obj.GetPositionX(), obj.GetPositionY(), obj.GetPositionZ() + obj.GetCollisionHeight()), out x, out y, out z);
+                GetHitSpherePointFor(new(obj.GetPositionX(), obj.GetPositionY(), obj.GetPositionZ() + obj.GetCollisionHeight()), out x, out y, out z);
 
             return GetMap().IsInLineOfSight(GetPhaseShift(), x, y, z, ox, oy, oz, checks, ignoreFlags);
         }
@@ -2094,62 +2094,62 @@ namespace Game.Entities
             switch (GetTypeId())
             {
                 case TypeId.Unit:
+                {
+                    // non fly unit don't must be in air
+                    // non swim unit must be at ground (mostly speedup, because it don't must be in water and water level check less fast
+                    if (!ToCreature().CanFly())
                     {
-                        // non fly unit don't must be in air
+                        bool canSwim = ToCreature().CanSwim();
-                        // non swim unit must be at ground (mostly speedup, because it don't must be in water and water level check less fast
+                        float ground_z = z;
-                        if (!ToCreature().CanFly())
+                        float max_z = canSwim
+                            ? GetMapWaterOrGroundLevel(x, y, z, ref ground_z)
+                            : (ground_z = GetMapHeight(x, y, z));
+                        if (max_z > MapConst.InvalidHeight)
                         {
-                            bool canSwim = ToCreature().CanSwim();
+                            if (z > max_z)
-                            float ground_z = z;
+                                z = max_z;
-                            float max_z = canSwim
+                            else if (z < ground_z)
-                                ? GetMapWaterOrGroundLevel(x, y, z, ref ground_z)
-                                : (ground_z = GetMapHeight(x, y, z));
-                            if (max_z > MapConst.InvalidHeight)
-                            {
-                                if (z > max_z)
-                                    z = max_z;
-                                else if (z < ground_z)
-                                    z = ground_z;
-                            }
-                        }
-                        else
-                        {
-                            float ground_z = GetMapHeight(x, y, z);
-                            if (z < ground_z)
                                 z = ground_z;
                         }
-                        break;
                     }
-                case TypeId.Player:
+                    else
-                    {
-                        // for server controlled moves playr work same as creature (but it can always swim)
-                        if (!ToPlayer().CanFly())
-                        {
-                            float ground_z = z;
-                            float max_z = GetMapWaterOrGroundLevel(x, y, z, ref ground_z);
-                            if (max_z > MapConst.InvalidHeight)
-                            {
-                                if (z > max_z)
-                                    z = max_z;
-                                else if (z < ground_z)
-                                    z = ground_z;
-                            }
-                        }
-                        else
-                        {
-                            float ground_z = GetMapHeight(x, y, z);
-                            if (z < ground_z)
-                                z = ground_z;
-                        }
-                        break;
-                    }
-                default:
                     {
                         float ground_z = GetMapHeight(x, y, z);
-                        if (ground_z > MapConst.InvalidHeight)
+                        if (MathF.Abs(z - ground_z) < GetCollisionHeight())
                             z = ground_z;
-                        break;
                     }
+                    break;
+                }
+                case TypeId.Player:
+                {
+                    // for server controlled moves playr work same as creature (but it can always swim)
+                    if (!ToPlayer().CanFly())
+                    {
+                        float ground_z = z;
+                        float max_z = GetMapWaterOrGroundLevel(x, y, z, ref ground_z);
+                        if (max_z > MapConst.InvalidHeight)
+                        {
+                            if (z > max_z)
+                                z = max_z;
+                            else if (z < ground_z)
+                                z = ground_z;
+                        }
+                    }
+                    else
+                    {
+                        float ground_z = GetMapHeight(x, y, z);
+                        if (MathF.Abs(z - ground_z) < GetCollisionHeight())
+                            z = ground_z;
+                    }
+                    break;
+                }
+                default:
+                {
+                    float ground_z = GetMapHeight(x, y, z);
+                    if (ground_z > MapConst.InvalidHeight)
+                        z = ground_z;
+                    break;
+                }
             }
         }
 
@@ -2390,7 +2390,7 @@ namespace Game.Entities
         Transport m_transport;
         Map _currMap;
         uint instanceId;
-        PhaseShift _phaseShift= new();
+        PhaseShift _phaseShift = new();
         PhaseShift _suppressedPhaseShift = new();                   // contains phases for current area but not applied due to conditions
         int _dbPhase;
         public bool IsInWorld { get; set; }
@@ -2464,8 +2464,6 @@ namespace Game.Entities
             jump.Reset();
         }
 
-
-
         public struct TransportInfo
         {
             public void Reset()

Source/Game/Movement/Generators/PathGenerator.cs

@@ -977,6 +977,7 @@ namespace Game.Movement
         Detour.dtNavMesh _navMesh;
     }
 
+    [Flags]
     public enum PathType
     {
         Blank = 0x00,   // path not built yet

Source/Game/Spells/SpellEffects.cs

@@ -3722,7 +3722,6 @@ namespace Game.Spells
                 return;
 
             Position pos = destTarget.GetPosition();
-            pos = unitTarget.GetFirstCollisionPosition(unitTarget.GetDistance(pos.posX, pos.posY, pos.posZ + 2.0f), 0.0f);
             unitTarget.NearTeleportTo(pos.posX, pos.posY, pos.posZ, pos.Orientation, unitTarget == m_caster);
         }