MoveTowards with StartCoroutine in update

Questions & Answers
1

I have a Queue to record the object move path,
and I want to move the object according the path ;
But the object not move .

 void Start () {
      GameObject beta_actor = Resources.Load("beta_actor") as GameObject;
      character_ins = Instantiate(beta_actor);
      character_ins.SetActive(true);
      runPath.Enqueue(new Vector3(254, 0, 255));
      runPath.Enqueue(new Vector3(253, 0, 255));
      runPath.Enqueue(new Vector3(252, 0, 255));
   }

void Update () {
      StartCoroutine(Move_Coroutine());
   }

 private IEnumerator Move_Coroutine() {
      Debug.Log("Move_Coroutine");
      
      while (runPath.Count > 0) {
         Vector3 endPos = runPath.Dequeue();
         Move_Trans(character_ins.transform.position, endPos, 5);
         yield return null;

      }


      Debug.Log("Move_Coroutine done");
   }


   private void Move_Torwards(Vector3 startPos, Vector3 endPos, float moveMax)
   {
      if(Vector3.Distance(startPos, endPos) <= 0.1f)
      {

         return;
      }

      float maxDistanceDelta = Time.deltaTime * moveMax;

      character_ins.transform.position = Vector3.MoveTowards(character_ins.transform.position, endPos, maxDistanceDelta);
     
      Debug.Log("Move_Torwards " + character_ins.transform.position + " endPos " + endPos + " " + maxDistanceDelta);
   }
2

Starting a coroutine from Update will start a new instance of that coroutine every frame.

You can use InvokeRepeating("Move_Coroutine", delay, rate) instead.

Or simply put that code within the Update call.

Or start the coroutine from Start (), and yield WaitForEndFrame.