Fix https://github.com/ElunaLuaEngine/Eluna/issues/164 and close https://github.com/ElunaLuaEngine/Eluna/issues/163

ElunaCreatureAI.h

@@ -20,6 +20,8 @@ struct ElunaCreatureAI : ScriptedAI
 {
     // used to delay the spawn hook triggering on AI creation
     bool justSpawned;
+    // used to delay movementinform hook (WP hook)
+    std::vector< std::pair<uint32, uint32> > movepoints;
 #ifndef TRINITY
 #define me  m_creature
 #endif
@@ -42,6 +44,16 @@ struct ElunaCreatureAI : ScriptedAI
             JustRespawned();
         }
 
+        if (!movepoints.empty())
+        {
+            for (auto& point : movepoints)
+            {
+                if (!sEluna->MovementInform(me, point.first, point.second))
+                    ScriptedAI::MovementInform(point.first, point.second);
+            }
+            movepoints.clear();
+        }
+
         if (!sEluna->UpdateAI(me, diff))
         {
 #ifdef TRINITY
@@ -100,8 +112,9 @@ struct ElunaCreatureAI : ScriptedAI
     //Called at waypoint reached or PointMovement end
     void MovementInform(uint32 type, uint32 id) override
     {
-        if (!sEluna->MovementInform(me, type, id))
-            ScriptedAI::MovementInform(type, id);
+        // delayed since hook triggers before actually reaching the point
+        // and starting new movement would bug
+        movepoints.push_back(std::make_pair(type, id));
     }
 
     // Called before EnterCombat even before the creature is in combat.