How to Reference Player when Instantiating Prefab

Question

Hello, I have created a car by using the default Unity Al with my own police car model on top. I have made a prefab of this car and I am trying to instantiate it into my scene. The instantiation works, but the problem occurs when I try to make it follow my player. The car just stays in one spot and does nothing. I have looked in the Inspector and when a new vehicle is instantiated, it has no references to my player. I understand prefabs cannot keep references to objects in a scene but is there another way around this? If there is a way, could somebody explain this to me. as I am new to Unity and know only the basics. Thank you.

Answer 1

Answer by Mouton · Sep 26, 2019 at 04:42 PM

You need to add a reference to the Player in a script of your freshly instantiated GameObject. You can do it from the instantiator script or from the instanciated one.

From the instatiator class

 using UnityEngine;

 class ClassWhichInstantiatePrefab : MonoBehaviour
 {
     public GameObject Prefab;
     private Player _player;
 
     private void Start()
     {
         // You may need a different logic here to retrieve
         // the Player, change it to fit your needs.
         _player = GetComponent<Player>();
     }
 
     public void MethodWhichInstantiatePrefab()
     {
         var go = Instantiate(Prefab);
         var component = go.GetComponent<YourComponent>();

         component.Player = _player;
     }
 }

From the instance class

 class MyClass
 {
     private Player _player;
 
     private void Start()
     {
         _player = FindObjectOfType<Player>();
     }
 }

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RoganEM · Sep 26, 2019 at 05:20 PM 0

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Thanks for the reply @$$anonymous$$outon , I have a problem when I put the first script into $$anonymous$$icrosoft Visual Studio, a few things are underlined in red and I am not sure how to fix it. This is a screenshot of the script: alt text

follow-player-script-1.png (18.5 kB)

Mouton RoganEM · Sep 26, 2019 at 05:33 PM 0

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You need to import UnityEngine. Your class needs to inherit from $$anonymous$$onoBehaviour too.

Add using UnityEngine; on the first line of your script:

 using UnityEngine;
 
 class Player : $$anonymous$$onoBehaviour
 {
 ...

RoganEM Mouton · Sep 26, 2019 at 06:59 PM 0

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Sorry again @$$anonymous$$outon , there is one other spot near the end of the script that still has an error, alt text

follow-player-script-2.png (21.4 kB)

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How to Reference Player when Instantiating Prefab

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