'GameObject[]' does not contain a definition for 'GetComponent' and no accessible extension method '

I'm trying to make a script to make an AI follow me in a topdown game I'm making for a jam. but it keeps saying
'GameObject[]' does not contain a definition for 'GetComponent' and no accessible extension method 'GetComponent' accepting a first argument of type 'GameObject[]' could be found (are you missing a using directive or an assembly reference?)
here's the code

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class follow : MonoBehaviour
6. {
7.     public float speed;
8.  
9.     private Transform target;
10.     // Start is called before the first frame update
11.     void Start()
12.     {
13.         target = GameObject.FindGameObjectsWithTag("Player").GetComponent<Transform>();
14.     }
15.  
16.     // Update is called once per frame
17.     void Update()
18.     {
19.         transform.position = Vector2.MoveTowards(transform.position, target.position, speed * Time.deltaTime);
20.     }
21. }

 

FindGameObjectsWithTag returns an array. Attaching a method call directly to the end of it tries to call the method on the array itself and not the actual objects in the array. You need to use a loop to access the individual objects as shown in the first and second examples in the documentation.

https://docs.unity3d.com/ScriptReference/GameObject.FindGameObjectsWithTag.html

 

i

I don't really understand can you give me a direct working code for an ai to follow the player

 

oh I discovered I wasn't using the right visual studio code tools

 

I'm trying to make a script to make an AI follow me in a topdown game I'm making for a jam. but it keeps saying
'GameObject[]' does not contain a definition for Assets\Scripts\Resetter.cs(39,74): error CS1061: 'GameObject[]' does not contain a definition for 'GetComponent' and no accessible extension method 'GetComponent' accepting a first argument of type 'GameObject[]' could be found (are you missing a using directive or an assembly reference?)

 

@kcmnzynp

You should create your own thread, instead of reviving some old thread.
And your question is not 2D related either.

GameObject[] is an array of GameObjects.

You need to get one GameObject from your array and then use GetComponent.

Array doesn't have a GetComponent method, but Unity GameObject (or Component) does have a GetComponent method.

 

@eses
I don't really understand, my code has no error, but it does. Can you give me a code for it?

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5.  
6. public class Resetter : MonoBehaviour
7. {
8.     public Rigidbody2D projectile;
9.     public float resetSpeed = 0.025f;
10.  
11.     private SpringJoint2D spring;
12.     private float resetSpeedSqr;
13.     private readonly IEnumerable<GameObject> respawns;
14.  
15.     private void Start()
16.     {
17.             resetSpeedSqr = resetSpeed * resetSpeed;          
18.     }
19.  
20.     void Update()
21.     {
22.         if (projectile)
23.         {
24.             if (!spring)
25.                 spring = projectile.GetComponent<SpringJoint2D>();
26.  
27.             CheckForReset();
28.         }
29.         else
30.         {
31.             TryFindProjectile();
32.         }
33.     }
34.  
35.    
36.  
37.     void TryFindProjectile()
38.     {
39.         if (GameObject.FindGameObjectWithTag("Projectile"))
40.         {
41.             projectile = GameObject.FindGameObjectsWithTag("Projectile").GetComponent<Rigidbody2D>();
42.             spring = projectile.GetComponent<SpringJoint2D>();
43.          }
44.  
45.     }
46.  
47.  
48.     void CheckForReset()
49.     {
50.         if(projectile.velocity.sqrMagnitude<resetSpeedSqr&&
51.             spring == null)
52.         {
53.             Reset();
54.         }
55.  
56.         if (Input.GetKeyDown(KeyCode.R))
57.         {
58.             Reset();
59.         }
60.  
61.     }
62.    
63.     void OnTriggerExit2D(Collider2D other)
64.     {
65.         if (projectile && other.GetComponent<Rigidbody2D>() == projectile)
66.         {
67.            Reset();
68.         }
69.  
70.  
71.     }
72.  
73.     void Reset()
74.     {
75.         Destroy(projectile.gameObject);
76.     }
77.  
78.  
79. }
80.  

 

At quick glance, line 41 - you probably accidentally used:

projectile = GameObject.FindGameObjectsWithTag

Notice anything?

You are using method that gets ...objects. You are not using findWithTag, which gets one object.

FindGameObjectsWithTag returns an array, not a single object, so it can’t go into your variable, neither does it have a GetComponent.

 

Code (CSharp):

1. GameObject.FindGameObjectsWithTag

//change this (Should Work)

Code (CSharp):

1. GameObject.FindGameObjectWithTag

 

could you explain please, I am having same problem

 

Please stop necro-posting old threads for unrelated problems.

Make your own fresh post, it is free.

Keep in mind many of the people above will never again log in and may never see your message.

This means YOU MUST COMMUNICATE clearly what you are doing. WE CANNOT READ YOUR MIND.

So... please start a fresh thread of your own, and before you post, read this:

How to report your problem productively in the Unity3D forums:

http://plbm.com/?p=220

How to understand compiler and other errors and even fix them yourself:

https://forum.unity.com/threads/ass...3-syntax-error-expected.1039702/#post-6730855

If you post a code snippet, ALWAYS USE CODE TAGS:

How to use code tags: https://forum.unity.com/threads/using-code-tags-properly.143875/