cleanup & put direction indicator in separate script

Project/Assets/ML-Agents/Examples/Walker/Prefabs/DynamicPlatformWalker.prefab

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Project/Assets/ML-Agents/Examples/Walker/Prefabs/WalkerWithTargetPair.prefab

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Project/Assets/ML-Agents/Examples/Walker/Scenes/WalkerDynamic.unity

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Project/Assets/ML-Agents/Examples/Walker/Scripts/WalkerAgent.cs

     [Space(10)]
     //This will be used as a stable observation platform for the ragdoll to use.
     GameObject m_OrientationCube;
-    public Transform directionIndicator;
     
     [Header("Target To Walk Towards")]
     [Space(10)]
         //UPDATE ORIENTATION CUBE POS & ROT
         m_OrientationCube.transform.position = hips.position;
         m_OrientationCube.transform.rotation = m_WalkDirLookRot;
-        
-        directionIndicator.position = new Vector3(hips.position.x, directionIndicator.position.y, hips.position.z);
-        directionIndicator.rotation = m_WalkDirLookRot;
     }
     
     public int fuTimer = 0;

Project/ProjectSettings/TimeManager.asset

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+  m_TimeScale: 1
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Project/Assets/ML-Agents/Examples/SharedAssets/Scripts/DirectionIndicator.cs

+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Unity.MLAgentsExamples
+{
+    public class DirectionIndicator : MonoBehaviour
+    {
+        public Transform transformToFollow; //ex: hips or body
+        public Transform targetToLookAt; //target in the scene the indicator will point to
+        public float heightOffset;
+        private Vector3 m_StartingPos;
+        
+        void OnEnable()
+        {
+            m_StartingPos = transform.position;
+        }
+
+        void Update()
+        {
+            transform.position = new Vector3(transformToFollow.position.x, m_StartingPos.y + heightOffset, transformToFollow.position.z);
+            Vector3 m_WalkDir = targetToLookAt.position - transform.position;
+            m_WalkDir.y = 0; //flatten dir on the y
+            transform.rotation = Quaternion.LookRotation(m_WalkDir);
+        }
+    }
+}

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Project/Assets/ML-Agents/Examples/SharedAssets/Scripts/TransformExtensions.cs

-using UnityEngine;
- 
-/// <summary>
-/// A Transform Extension that ignores scale for TransformPoint operations.
-/// </summary>
-public static class TransformExtensions
-{
-    
-    /// <summary>
-    /// Transform position from world space to local space unscaled.
-    /// </summary>
-    public static Vector3 TransformPointUnscaled(this Transform transform, Vector3 position)
-    {
-        var localToWorldMatrix = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
-        return localToWorldMatrix.MultiplyPoint3x4(position);
-    }
- 
-    /// <summary>
-    /// Transform position from local space to world space unscaled.
-    /// </summary>
-    public static Vector3 InverseTransformPointUnscaled(this Transform transform, Vector3 position)
-    {
-        var worldToLocalMatrix = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one).inverse;
-        return worldToLocalMatrix.MultiplyPoint3x4(position);
-    }
-}

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