From 62afe3bf8eb0b10007655c5d69f86b17d9d29407 Mon Sep 17 00:00:00 2001
From: hondacrx <prelude_20032002@yahoo.com>
Date: Sun, 26 Sep 2021 17:27:33 -0400
Subject: [PATCH] re-enable CreatureAI::MovementInform for
 Chase/FollowMovementGenerator - didn't realize any AI used this

Port From (https://github.com/TrinityCore/TrinityCore/commit/5f0f530c0859982bc2c0c230d928aa3fc8d86d23)
---
 .../Generators/ChaseMovementGenerator.cs      | 19 ++++++++++++++-----
 .../Generators/FollowMovementGenerator.cs     | 14 +++++++++++++-
 2 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/Source/Game/Movement/Generators/ChaseMovementGenerator.cs b/Source/Game/Movement/Generators/ChaseMovementGenerator.cs
index 5042ec18d..35ff5afd2 100644
--- a/Source/Game/Movement/Generators/ChaseMovementGenerator.cs
+++ b/Source/Game/Movement/Generators/ChaseMovementGenerator.cs
@@ -16,13 +16,9 @@
  */
 
 using Framework.Constants;
+using Game.AI;
 using Game.Entities;
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using Framework.GameMath;
 
 namespace Game.Movement
 {
@@ -95,6 +91,7 @@ namespace Game.Movement
                         _path = null;
                         owner.StopMoving();
                         owner.SetInFront(target);
+                        DoMovementInform(owner, target);
                         return true;
                     }
                 }
@@ -106,6 +103,7 @@ namespace Game.Movement
                 _path = null;
                 owner.ClearUnitState(UnitState.ChaseMove);
                 owner.SetInFront(target);
+                DoMovementInform(owner, target);
             }
 
             // if the target moved, we have to consider whether to adjust
@@ -211,5 +209,16 @@ namespace Game.Movement
                 return false;
             return !angle.HasValue || angle.Value.IsAngleOkay(target.GetRelativeAngle(owner));
         }
+
+        static void DoMovementInform(Unit owner, Unit target)
+        {
+            Creature cOwner = owner.ToCreature();
+            if (cOwner != null)
+            {
+                CreatureAI ai = cOwner.GetAI();
+                if (ai != null)
+                    ai.MovementInform(MovementGeneratorType.Chase, (uint)target.GetGUID().GetCounter());
+            }
+        }
     }
 }
diff --git a/Source/Game/Movement/Generators/FollowMovementGenerator.cs b/Source/Game/Movement/Generators/FollowMovementGenerator.cs
index 3991ce78b..6f952833a 100644
--- a/Source/Game/Movement/Generators/FollowMovementGenerator.cs
+++ b/Source/Game/Movement/Generators/FollowMovementGenerator.cs
@@ -16,7 +16,7 @@
  */
 
 using Framework.Constants;
-using Framework.GameMath;
+using Game.AI;
 using Game.Entities;
 using System;
 
@@ -75,6 +75,7 @@ namespace Game.Movement
                     {
                         _path = null;
                         owner.StopMoving();
+                        DoMovementInform(owner, target);
                         return true;
                     }
                 }
@@ -84,6 +85,7 @@ namespace Game.Movement
             {
                 _path = null;
                 owner.ClearUnitState(UnitState.FollowMove);
+                DoMovementInform(owner, target);
             }
 
             if (_lastTargetPosition.GetExactDistSq(target.GetPosition()) > 0.0f)
@@ -175,5 +177,15 @@ namespace Game.Movement
 
             return !angle.HasValue || angle.Value.IsAngleOkay(target.GetRelativeAngle(owner));
         }
+
+        static void DoMovementInform(Unit owner, Unit target)
+        {
+            if (!owner.IsCreature())
+                return;
+
+            UnitAI ai = owner.GetAI();
+            if (ai != null)
+                ((CreatureAI)ai).MovementInform(MovementGeneratorType.Follow, (uint)target.GetGUID().GetCounter());
+        }
     }
 }