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Question by mjonasz · Jan 21, 2019 at 07:33 PM · checkpoint

Find closest waypoint.

I use the following script to find the closest waypoint for my NPCs to go to. However, the debug logs a list of all the checkpoints and the NPCs do not move to the closest one but to the last one in the list.

   GameObject[] checkpoint = GameObject.FindGameObjectsWithTag("checkpoint");
                 {
                     foreach (GameObject go in checkpoint)
                     {
                         ObjectiveControl comp = go.GetComponent<ObjectiveControl>();
                        if (comp != null && comp.waypoint == true*/)
                         {
                             path.Add(comp.transform);
                             currentCheckpoint = FindClosestCheckpoint();
                             Debug.Log(currentCheckpoint);
                         }
                     }
                 }
 
    int FindClosestCheckpoint()
     {
             if (path.Count == 0) return -1;
             int closest = 0;
             float lastDist = Vector3.Distance(t$$anonymous$$s.transform.position, path[0].transform.position);
             for (int i = 1; i < path.Count; i++)
             {
                 float t$$anonymous$$sDist = Vector3.Distance(t$$anonymous$$s.transform.position, path[i].position);
                 if (lastDist > t$$anonymous$$sDist && i != currentCheckpoint)
                 {
                     closest = i;             
                 }
             }
             return closest;
         }


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Answer by JonPQ · Jan 21, 2019 at 07:43 PM

initialize float lastDist to infinity or somet$$anonymous$$ng huge.... outside the loop.

then inside your loop, when you find somet$$anonymous$$ng closer... you need to store both closest=i; and ALSO set lastDist = t$$anonymous$$sDist

also suggest renaming t$$anonymous$$sDist to closestDist would make t$$anonymous$$ngs clearer

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avatar image mjonasz · Jan 22, 2019 at 04:20 PM 0
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