A obj can trace a path, and loop or reverse

Assets/Scenes/Obstacles.unity

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Assets/Scripts/PathTracer.cs

@@ -0,0 +1,44 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class PathTracer : MonoBehaviour
+{
+    [SerializeField]
+    private List<Transform> path;
+    private Vector3 currTargetPos;
+    [SerializeField]
+    private int currTargetIndex;
+    [SerializeField]
+    private float speed;
+    [SerializeField][Tooltip("True = Go back to first pos; False = Inverse list")]
+    private bool loop = true;
+    private Rigidbody rb;
+    // Start is called before the first frame update
+    void Start()
+    {
+        rb = GetComponent<Rigidbody>();
+        rb.position = path[0].position;
+        currTargetIndex = 1;
+        currTargetPos = path[currTargetIndex].position;
+        Debug.Log(path.Count);
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        if(Vector3.Distance(transform.position, currTargetPos) <= 0){
+            currTargetIndex++;
+            if(currTargetIndex >= path.Count){
+                if(!loop){
+                    path.Reverse();
+                }
+                currTargetIndex = 0;
+            }
+            
+            currTargetPos = path[currTargetIndex].position;
+        }
+        rb.position = Vector3.MoveTowards(transform.position, currTargetPos, speed/100);//Magic number pour avoir une better time in inspector
+    }
+
+}

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