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Question by razzancar · Jul 11, 2017 at 12:46 AM · c#error2d gamenullreferenceexceptionground detection

NullReferenceException: Object reference not set to an instance of an object Groundcheck.OnTriggerEnter2D (UnityEngine.Collider2D col) (at Assets/object/code/Groundcheck.cs:17)

i keep getting a null reference exception error and i cant seem to solve it on my own.

here is my ground checking script:

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class Groundcheck : MonoBehaviour {

 private NewBehaviourScript player;

 void Start()
 {
     player = gameObject.GetComponentInParent<NewBehaviourScript>();
 }

 void OnTriggerEnter2D(Collider2D col)
 {
     player.grounded = true;
 }

 void OnTriggerstay2D(Collider2D col)
 {
     player.grounded = true;
 }

 void OnTriggerExit2D(Collider2D col)
 {
     player.grounded = false;
 }

}

and here is my character script:

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class NewBehaviourScript : MonoBehaviour {

 public float maxspeed = 3;
 public float speed = 50f;
 public float jumpPower = 150f;

 public bool grounded;

 private Rigidbody2D rb2d;
 private Animator anim;
 
 void Start ()
 {
     rb2d = gameObject.GetComponent<Rigidbody2D>();
     anim = gameObject.GetComponent<Animator>();
 }
 
 
 void Update ()
 {
     if (grounded && Input.GetButtonDown("Jump"))
     {
         rb2d.AddForce(Vector2.up * jumpPower);
     }
 }

 private void NewMethod1()
 {
     transform.localScale = new Vector3(1, 1, 1);
 }

 private void NewMethod()
 {
     transform.localScale = new Vector3(-1, 1, 1);
 }

 private void FixedUpdate()
 {

     float h = Input.GetAxis("Horizontal");

     rb2d.AddForce((Vector2.right * speed) * h);

     if (rb2d.velocity.x > maxspeed)
     {
         rb2d.velocity = new Vector2(maxspeed, rb2d.velocity.y);
     }

     if (rb2d.velocity.x < -maxspeed)
     {
         rb2d.velocity = new Vector2(-maxspeed, rb2d.velocity.y);
     }
 }

}

i'm new to this so any help i can get is very appreciated.

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