Null Reference Exception Unity 2d

Question

I have a problem in Unity 2d

NullReferenceException: Object reference not set to an instance of an object RightOne.OnMouseDown () (at Assets/Scripts/RightOne.cs:13) UnityEngine.SendMouseEvents:DoSendMouseEvents(Int32)

Here's the script:

using UnityEngine;
using System.Collections;

public class RightOne : MonoBehaviour {

    private GameObject mainCube;

    void Start () {
        mainCube = GameObject.Find ("Main Cube");
    }

    void OnMouseDown () {
        if (GetComponent <Renderer> ().material.color == mainCube.GetComponent <Renderer> ().material.color)
            mainCube.GetComponent <GameCntrl> ().next = true;
        else
            mainCube.GetComponent <GameCntrl> ().lose = true;
    }
}

Does this answer your question? [What is a NullReferenceException, and how do I fix it?](https://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-and-how-do-i-fix-it) — BugFinder, Apr 14 '20 at 13:45

score 1 · Accepted Answer · answered Apr 14 '20 at 10:23

1

This means that something in your code in that function is null for example, GameObject.Find(..) returns null if the object cannot be found. GetComponent<T>() can also return null.

You need to make sure the gamecube is found, and the current gameobject and the main cube actually have a renderer component attached. The same is true for the GameCntrl component.

answered Apr 14 '20 at 10:23

sommmen

4,642
1
16
33

Thank you very much! You really help me!! There are a problem with name of a "Main Cube"!!)) – MaksNeon Apr 14 '20 at 10:33
@MaksNeon great you found the problem, go ahead and mark this as answered if this question is done – sommmen Apr 14 '20 at 12:34

Null Reference Exception Unity 2d

1 Answers1