An object reference is required to access non-static member ( Comes up. I am trying to work with an array)

Question

Hello, I have setup an array and want to run checks of objects in the array. I get the An object reference is required to access non-static member `LevelManager._groundedPatients' error (at line 19 of my code).

The array has 1 object in it through the inspector.

I'm not sure how to solve this. Any help would be nice. Thank you.

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 
 public class LevelManager : MonoBehaviour {
 
 
     public int playerMoves = -1;
     public GameObject deathParticle;
 
 
     public GameObject[] _groundedPatients;
 
 
 
     public static void CheckPatientsHealth()
     {
         //
         foreach (GameObject patient in _groundedPatients)
         if (patient.GetComponent<PatientManager>().image.fillAmount <= 0) {
 //            Instantiate(deathParticle, transform.position, transform.rotation);
             print ("fgyiuh");
         }
     }
 
 
 
     void AddToPlayerMoveCounter()
     {
         playerMoves += 1;
     }
 }

Answer 1

Best Answer

Answer by NoseKills · Jul 08, 2015 at 10:57 AM

 public GameObject[] _groundedPatients;

is not static, so each instance of LevelManager (each GameObject with this script) you create has their own _groundedPatients. You are trying to access it in a method that is static public static void CheckPatientsHealth().

Static methods are specific to the whole class, not each instance of it, so in the scope of a static method you cannot access a non static array.

If you call LevelManager.CheckPatientsHealth(), what would decide which instance of LevelManager would get its _groundedPatients looped through ?

You have to make the array static or the method not static.

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AstralKite · Jul 09, 2015 at 01:52 AM 1

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Ah. It all makes sense when you explain it. Thank you so much. The error is gone and the code works!

NoseKills · Jul 09, 2015 at 11:31 AM 0

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An object reference is required to access non-static member ( Comes up. I am trying to work with an array)

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