Question by leinaddc · May 28 at 06:12 PM · movement script

Using Vector3.MoveTowards with a list of waypoints

Hi all, I am trying to make a GameObject follow a certain path of waypoints by a roll dice.

I.E: Dice roll is 3, traverse a list of waypoints until it reaches the last one.

The code I have works but the GameObjects moves from the current waypoint it is in, to the last one, skipping the rest of waypoints in the middle.

  void Start()
     {
 
         _waypoints = _waypointsController.GetWaypoints();
 
         _currentWaypoint = _waypoints[0].transform;
         print("Starting: " +_currentWaypoint.name);
         _currentIndex = _waypoints.IndexOf(_currentWaypoint.gameObject);
         print("Starting index: " + _currentIndex);
 
         transform.position = _currentWaypoint.position;
 
     }
     void Update()
     {
 
         if (Input.GetKeyDown(KeyCode.Space))
         {
             _diceRoll = _diceManager.RollDice();
 
             print("Roll dice was: " + _diceRoll);
 
             _isMoving = true;
 
         }
         MovePlayer();
         if (Vector3.Distance(transform.position, _currentWaypoint.position) > 0.1f)
         {
             transform.position = Vector3.MoveTowards(transform.position, _currentWaypoint.position, _moveSpeed * Time.deltaTime);
         }
 
     }
 
 
     private void MovePlayer()
     {
         if (_isMoving)
         {
             print("Starting waypoint and index: " + _currentWaypoint.name + " " + _currentIndex);
 
             for (int k = 0; k <= _diceRoll - 1; k++)
             {
                 if (_waypoints.IndexOf(_currentWaypoint.gameObject) < _waypoints.Count - 1)
                 {
 
                     _currentWaypoint = _waypoints[_currentIndex + 1].transform;
                     print("New waypoint" + _currentWaypoint.name);
 
                 }
                 else
                 {
                     _currentWaypoint = _waypoints[0].transform;
 
                 }
                 _currentIndex = _waypoints.IndexOf(_currentWaypoint.gameObject);
             }
             print("Ending waypoint and index: " + _currentWaypoint.name + " " + _currentIndex);
             _diceRoll = 0;
             print("Stop moving");
             _isMoving = false;
         }
 
     }

I have tried putting the MoveTowards inside the MovePlayer method but it doesn't work, game object stutters each space press.

Any insight is appreciated.

Add comment · Show 1

rh_galaxy · May 29 at 03:17 AM 0

My understanding of your code is that MovePlayer() will take you to the last waypoint directly, because your for loop will not allow movement along the waypoint. Update() needs to finish for every position along the way.

I'm not entirely certain, but maybe you can use something from my waypoint movement code in Update().

 int iCurWP = 1;
 float fWPTime = 0f;
 Vector3 vVel;
 
 //move along waypoints
 if (iNumWayPoints > 1)
 {
     fWPTime -= Time.fixedDeltaTime;
     if (fWPTime <= 0)
     {
         //find out velocity to next wp
         Vector3 vDist = new Vector3(vWayPoints[iCurWP].x - vPos.x,
             vWayPoints[iCurWP].y - vPos.y, 0);
         float fDist = vDist.magnitude;
         fWPTime = fDist / iSpeed;
         vVel = new Vector3(vDist.x / fWPTime, vDist.y / fWPTime, 0);
         iCurWP = (iCurWP + 1) % iNumWayPoints;
     }
     vPos += vVel * Time.fixedDeltaTime; //move along velocity
 }
 //set object to position vPos here

Answers Answers and Comments

145 People are following this question.

Using Vector3.MoveTowards with a list of waypoints

0 Replies

Your answer

Follow this Question

Related Questions