What does is mean if Object reference not set to an instance of an object

Unity Engine
1

Hello Everyone
I’m getting an annoying error in my scrips and I’m wondering what this means. Can someone please help me out.
Full Error:
Object reference not set to an instance of an object
AnimatorSetup.Setup (Single speed, Single angle) (at Assets/Scripts/AnimatorSetup.cs:29)
EnemyAnimation.NavAnimSetup () (at Assets/Scripts/EnemyAnimation.cs:61)
EnemyAnimation.Update () (at Assets/Scripts/EnemyAnimation.cs:35)

AnimatorSetup
using UnityEngine;

using System.Collections;

public class AnimatorSetup : MonoBehaviour {

public float speedDampTime = 0.1f;

public float angularSpeedDampTime = 0.7f;

public float angleResponseTime = 0.6f;

private Animator anim;

private HashID hash;

public AnimatorSetup(Animator animator, HashIDhashIDs)

{

anim = animator;

hash = hashIDs;

}

public void Setup(float speed, float angle)

{

float angularSpeed = angle / angleResponseTime;

anim.SetFloat(hash.speedFloat, speed, speedDampTime, Time.deltaTime);

anim.SetFloat(hash.angularSpeedFloat, angularSpeed, angularSpeedDampTime, Time.deltaTime);

}

}

EnemyAnimation Script

using UnityEngine;

using System.Collections;

public class EnemyAnimation : MonoBehaviour {

public float deadZone = 5f;

public float speed;

public float angle;

private Transform player;

private EnemySightenemySight;

private NavMeshAgentnav;

private Animator anim;

private HashID hash;

private AnimatorSetupanimSetup;

void Awake()

{

player = GameObject.FindGameObjectWithTag(“Player”).transform;

enemySight = GetComponent();

nav = GetComponent ();

anim = GetComponent ();

hash = GetComponent ();

nav.updateRotation = false;

animSetup = new AnimatorSetup(anim, hash);

anim.SetLayerWeight (1, 1f);

anim.SetLayerWeight (2, 1f);

deadZone *= Mathf.Deg2Rad;

}

void Update()

{

NavAnimSetup (); //error

}

void OnAnimatorMove()

{

nav.velocity = anim.deltaPosition / Time.deltaTime;

transform.rotation = anim.rootRotation;

}

void NavAnimSetup()

{

if (enemySight.playerinSight) {

speed = 0f;

angle = FindAngle (transform.forward, player.position - transform.position, transform.up);

} else {

speed = Vector3.Project(nav.desiredVelocity, transform.forward).magnitude;

angle = FindAngle (transform.forward, nav.desiredVelocity, transform.up);

if(Mathf.Abs(angle) < deadZone)

{

transform.LookAt(transform.position + nav.desiredVelocity);

angle = 0f;

}

}

animSetup.Setup (speed,angle); //error

}

float FindAngle(Vector3 fromVector, Vector3 toVector, Vector3 UpVector)

{

if (toVector == Vector3.zero)

return 0f;

float angle = Vector3.Angle (fromVector, toVector);

Vector3 normal = Vector3.Cross (fromVector, toVector);

angle *= Mathf.Sign(Vector3.Dot(normal, UpVector));

angle *= Mathf.Deg2Rad;

return angle;

}

}
Thanks
Minpin

2

Im assuming you dont have animation compnent set to object in reference?

3

Animator Component i meant

4

please use [ code] [/ code] tags when pasting code into the forums, really helps with the readability and also provides line numbers (so we know which line the error is referring to…), there is a sticky about them at the top of the scripting forum.

@shawnrevels there is an edit button :stuck_out_tongue:

5 
public class AnimatorSetup : MonoBehaviour {...} 
// animatorSetup inherit from Monobehaviour so it's a component not a c# class


animSetup = new AnimatorSetup(anim, hash);

this is wrong, you cannot add a component with “new”

I think you were looking for

GetComponent<AnimatorSetup> ().AnimatorSetup(anim, hash);

assuming AnimatorSetup is already a component on this gameObject, if not you’re looking for AddComponent()

6

So is this what is supposed to look like?

animSetup = GetComponent<AnimatorSetup> ().AnimatorSetup(anim, hash);

if so when I put in . it doesnt come up with AnimatorSetup. Hope i did the code thing right. Thanks for replying so quickly your awesome.
thanks
Minpin

7

not quite… if you want to get a reference to the AnimatorSetup component and store it in animSetup you want something like

animSetup = GetComponent<AnimatorSetup>();

and then you can use the reference for the function call

animSetup.AnimatorSetup(anim, hash);

that function doesn’t return anything (it’s a void function) so the code you tried will not have anything returned to set in reference. Close though :). I’d missed you use animSetup in your update function and not just in the one line in the Awake(), so I had rolled the two lines into a single lookup and execute the function.