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Question by animetallex · Aug 18, 2017 at 04:52 AM · c#colliderclassmethod

Why i cant call this simple method?(c#)

THIS IS THE CLASS:

 using System.Collections;    
 using System.Collections.Generic;    
 using UnityEngine;    
 using UnityEngine.SceneManagement;
 
 public class GameManager : MonoBehaviour {
 
     public void NextLevel(int currentlevel)
     {
         if (currentlevel==1)
         {
             SceneManager.LoadScene("Scene 2");
         }
     }
 }

THIS IS THE SCRIPT THAT CALL THE CLASS WITH THE METHOD:

 using System.Collections;    
 using System.Collections.Generic;    
 using UnityEngine;
 
 public class Logro : MonoBehaviour
 {
 
     public GameManager gamemanager;
     public int currentlevel;
     private void OnTriggerEnter(Collider other)
     {
         if (other.tag == "Player")
         {
             gamemanager.SendMessage("NextLevel",currentlevel);
         }
     }
 }

BUT WHEN THE "PLAYER" ENTER IN THE COLLIDER IT SHOWS A ERROR, WHY??

I THINK THAT IS NOT THE WAY TO CALL A METHOD, HOW CAN I CALL IT?

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Answer by Hellium · Aug 18, 2017 at 09:27 AM

Why don't you simply call the method as follow ?

 gamemanager.NextLevel(currentlevel);
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avatar image UnityCoach · Aug 18, 2017 at 11:35 AM 0
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@Hellium is right. You can simply call the method on the class instance.

Send$$anonymous$$essage is otherwise to be used on the GameObject, not a component.

avatar image animetallex · Aug 18, 2017 at 02:13 PM 0
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i tried both way, but when i enter in the collider appear the nextmessage:

NullReferenceException: Object reference not set to an instance of an object Logro.OnTriggerEnter (UnityEngine.Collider other) (at Assets/Scripts/Logro.cs:14)

avatar image animetallex · Aug 18, 2017 at 02:14 PM 0
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NullReferenceException: Object reference not set to an instance of an object Logro.OnTriggerEnter (UnityEngine.Collider other) (at Assets/Scripts/Logro.cs:14)

avatar image Hellium · Aug 18, 2017 at 02:20 PM 0
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You simply haven't specified the Game$$anonymous$$anager variable in the inspector.

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