Object reference not set to an instance of an object

Unity Engine
1

A part of this script is suppose to change the InvokeRepeating timer depending on the player’s speed, it takes the value of the variable speed from a different script called PlayerMovement

using UnityEngine;
using System.Collections;

public class BlockSizeAndPosition : MonoBehaviour {

    public int Distance;
    public GameObject Player;
    public GameObject[] Blocks = new GameObject[9];

    private PlayerMovement MovementScript;
    private float RespawnTimer;

    void Awake() {
        MovementScript = GetComponent<PlayerMovement>();
    }

    void Start() {
        InvokeRepeating ("ChooseBlock", 1, RespawnTimer);
    }

    void Update() {
        ChangeTimer();
    }

    void ChangeTimer() {
        if (MovementScript.speed <= 2) {
            RespawnTimer = 4;
        } else if (MovementScript.speed >= 2 && MovementScript.speed <= 3) {
            RespawnTimer = 3.5f;
//rest
//of
//script

This is the error I get

This is the PlayerMovement script

using UnityEngine;
using System.Collections;

public class PlayerMovement : MonoBehaviour {

    public float speed;
    public float HorizontalMovementSpeed;
    public float increment;

    void Start() {
        InvokeRepeating("ChangeSpeed", 5, 5);
    }

    void Update() {
        transform.Translate (0, speed * Time.deltaTime, 0);
        Vector3 Movement = new Vector3 (Input.GetAxis ("Horizontal"), 0, 0);
        transform.position = transform.position + Movement * HorizontalMovementSpeed * Time.deltaTime;
    }

    void ChangeSpeed() {
        if (speed <= 10) {
            speed = speed + increment;
        }
    }

}

!(http://using UnityEngine; using System.Collections; public class PlayerMovement : MonoBehaviour { public float speed; public float HorizontalMovementSpeed; public float increment; void Start() { InvokeRepeating(“ChangeSpeed”, 5, 5); } void Update() { transform.Translate (0, speed * Time.deltaTime, 0); Vector3 Movement = new Vector3 (Input.GetAxis (“Horizontal”), 0, 0); transform.position = transform.position + Movement * HorizontalMovementSpeed * Time.deltaTime; } void ChangeSpeed() { if (speed <= 10) { speed = speed + increment; } } })

2

What are you trying to do, also please send the package makes it easier…

3

Dont begin variable names capital. Its a matter of convention. The error tells your that MovementScript is not assigned. Are you sure there is a MovementScript on the same GameObject as your BlockSizeAndPositionTimer?

4

If the MovementScript is assigned to the same gameobject, then it is probably not available at Awake. There are two solutions for this:

  1. Move MovementScript = GetComponent(); to your Start function. (This is the best practice. Awake() is not for accessing external objects.)
  2. Set MovementScript to be executed before BlockSizeAndPosition via Edit > Project Settings > Script Execution Order.