Core/Movement: waypoint movement

Port From (https://github.com/TrinityCore/TrinityCore/commit/97585597f0b1aff93873fe4d757556731bc0c1b2)

Source/Game/Entities/Creature/Creature.cs

@@ -105,6 +105,21 @@ namespace Game.Entities
             ForcedDespawn(0);
         }
 
+        public override void PauseMovement(uint timer = 0, MovementSlot slot = 0)
+        {
+            base.PauseMovement(timer, slot);
+
+            SetHomePosition(GetPosition());
+        }
+
+        public bool IsReturningHome()
+        {
+            if (GetMotionMaster().GetMotionSlotType(MovementSlot.Active) == MovementGeneratorType.Home)
+                return true;
+
+            return false;
+        }
+        
         public void SearchFormation()
         {
             if (IsSummon())
@@ -119,6 +134,33 @@ namespace Game.Entities
                 FormationMgr.AddCreatureToGroup(frmdata.leaderGUID, this);
         }
 
+        public bool IsFormationLeader()
+        {
+            if (m_formation == null)
+                return false;
+
+            return m_formation.IsLeader(this);
+        }
+
+        public void SignalFormationMovement(Position destination, uint id = 0, WaypointMoveType moveType = 0, bool orientation = false)
+        {
+            if (m_formation == null)
+                return;
+
+            if (!m_formation.IsLeader(this))
+                return;
+
+            m_formation.LeaderMoveTo(destination, id, moveType, orientation);
+        }
+
+        public bool IsFormationLeaderMoveAllowed()
+        {
+            if (m_formation == null)
+                return false;
+
+            return m_formation.CanLeaderStartMoving();
+        }
+        
         public void RemoveCorpse(bool setSpawnTime = true, bool destroyForNearbyPlayers = true)
         {
             if (GetDeathState() != DeathState.Corpse)

Source/Game/Entities/Creature/CreatureGroups.cs

@@ -216,7 +216,7 @@ namespace Game.Entities
             m_Formed = !dismiss;
         }
 
-        public void LeaderMoveTo(Position destination, uint id = 0, uint moveType = 0, bool orientation = false)
+        public void LeaderMoveTo(Position destination, uint id = 0, WaypointMoveType moveType = 0, bool orientation = false)
         {
             //! To do: This should probably get its own movement generator or use WaypointMovementGenerator.
             //! If the leader's path is known, member's path can be plotted as well using formation offsets.
@@ -258,11 +258,26 @@ namespace Game.Entities
             }
         }
 
+        public bool CanLeaderStartMoving()
+        {
+            foreach (var itr in m_members)
+            {
+                if (itr.Key != m_leader && itr.Key.IsAlive())
+                {
+                    if (itr.Key.IsEngaged() || itr.Key.IsReturningHome())
+                        return false;
+                }
+            }
+
+            return true;
+        }
+
         public Creature GetLeader() { return m_leader; }
         public uint GetId() { return m_groupID; }
         public bool IsEmpty() { return m_members.Empty(); }
         public bool IsFormed() { return m_Formed; }
-
+        public bool IsLeader(Creature creature) { return m_leader == creature; }
+        
         Creature m_leader;
         Dictionary<Creature, FormationInfo> m_members = new Dictionary<Creature, FormationInfo>();
 

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

@@ -159,6 +159,28 @@ namespace Game.Entities
             init.Stop();
         }
 
+        public virtual void PauseMovement(uint timer = 0, MovementSlot slot = 0)
+        {
+            if (slot >= MovementSlot.Max)
+                return;
+
+            IMovementGenerator movementGenerator = GetMotionMaster().GetMotionSlot(slot);
+            if (movementGenerator != null)
+                movementGenerator.Pause(timer);
+
+            StopMoving();
+        }
+
+        public void ResumeMovement(uint timer = 0, MovementSlot slot = 0)
+        {
+            if (slot >= MovementSlot.Max)
+                return;
+
+            IMovementGenerator movementGenerator = GetMotionMaster().GetMotionSlot(slot);
+            if (movementGenerator != null)
+                movementGenerator.Resume(timer);
+        }
+
         public void SetInFront(WorldObject target)
         {
             if (!HasUnitState(UnitState.CannotTurn))

Source/Game/Entities/Unit/Unit.Pets.cs

@@ -17,6 +17,7 @@
 
 using Framework.Constants;
 using Game.AI;
+using Game.Movement;
 using Game.Networking.Packets;
 using Game.Spells;
 using System.Collections.Generic;
@@ -351,8 +352,15 @@ namespace Game.Entities
 
             if (IsTypeId(TypeId.Unit))
             {
+                IMovementGenerator movementGenerator = GetMotionMaster().GetMotionSlot(MovementSlot.Idle);
+                if (movementGenerator != null)
+                    movementGenerator.Pause(0);
+
+                GetMotionMaster().Clear(MovementSlot.Active);
+
+                StopMoving();
+
                 ToCreature().GetAI().OnCharmed(true);
-                GetMotionMaster().MoveIdle();
             }
             else
             {
@@ -466,6 +474,7 @@ namespace Game.Entities
             else
                 RestoreFaction();
 
+            ///@todo Handle SLOT_IDLE motion resume
             GetMotionMaster().InitDefault();
 
             Creature creature = ToCreature();