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POI'm Getting this error in Unity3D - NullReferenceException: Object reference not set to an instance of an object
 

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  1. POI'm Getting this error in Unity3D - NullReferenceException: Object reference not set to an instance of an object
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    <p>I'm getting an error while developing FPS game in Unity 3D</p> <blockquote> <p><em>NullReferenceException: Object reference not set to an instance of an object Node.OnDrawGizmos () (at Assets/Node.cs:14)</em></p> </blockquote> <p>It working fine earlier but when I added layer to the nodes then I got this error.</p> <p>check out with the complete code</p> <pre><code>using UnityEngine; using System.Collections; using System.Collections.Generic; public class Node : MonoBehaviour { public List&lt;GameObject&gt; neighours = new List&lt;GameObject&gt;(); public float nodeRadius = 50.0f; public LayerMask nodeLayerMask; public LayerMask collisionLayerMask; public GameObject goal; void OnDrawGizmos() { Gizmos.DrawWireCube(transform.position, Vector3.one); foreach(GameObject neighbor in neighbors) { Gizmos.DrawLine(transform.position, neighbor.transform.position); Gizmos.DrawWireSphere(neighbor.transform.position, 0.25f); } if(goal) { GameObject current = gameObject; Stack&lt;GameObject&gt; path = DijkstraAlgorithm.Dijkstra(GameObject.FindGameObjectsWithTag("Node"), gameObject, goal); foreach(GameObject obj in path) { Gizmos.DrawSphere(obj.transform.position, 1.0f); Gizmos.color = Color.green; Gizmos.DrawLine(current.transform.position, obj.transform.position); current = obj; } } } [ContextMenu ("Connect Node to Neighours")] void findNeighours() { neighours.Clear(); Collider[] cols = Physics.OverlapSphere(transform.position, nodeRadius, nodeLayerMask); foreach(Collider node in cols) { if(node.gameObject != gameObject) { } } } </code></pre> <p>}</p>
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    1. PO
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      1. PTAnswer
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    1. PTQuestion
    1. USSoner Gönül
    1. USRavi Pal
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    1. This table or related slice is empty.
    1. COCheck for null or empty values
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      1. POI'm Getting this error in Unity3D - NullReferenceException: Object reference not set to an instance of an object
      1. USSajeetharan
    2. COwhich line does cause the null reference exception? try to step and understand where the exception is raised, otherwise is impossible to give you an answer.
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      1. POI'm Getting this error in Unity3D - NullReferenceException: Object reference not set to an instance of an object
      1. USHeisenbug
    3. COis `goal` set to anything? It could possibly be what's throwing the error.
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      1. POI'm Getting this error in Unity3D - NullReferenceException: Object reference not set to an instance of an object
      1. USSteven Mills
 

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