Trying to instantiate a prefab to transform.LookAt(target);

Unity Engine
1

I have enemy ships that I want to always look at the player.

if I use:

using UnityEngine;
using System.Collections;

public class LookAt : MonoBehaviour 
{

	public Transform target;
	
		
		void Update()
		{
			if(target != null)
			{
			transform.LookAt(target);
			}
		}
	}

this works if this script is on a non prefab. But as a prefab I lose the target once it is instantiated.

I’m still very new to this and been searching around. Found a few things I thought would work. But i keep getting errors
I tried adding this:

void Start()
	{
		GameObject target = GameObject.FindGameObjectWithTag("Player");
  //ALSO I've tried FindWithTag ("Player") as well as Find("Player") <---These don't give me erros but they don't do what I want

	}

Thanks for any help. I need to pass out before my head explodes :confused:

2 
using UnityEngine;

using System.Collections;

 

public class LookAt : MonoBehaviour 

{

 

    public Transform target;

    void Start()
{


     target = GameObject.FindGameObjectWithTag("Player");
}

    

        

        void Update()

        {

            if(target != null)

            {

            transform.LookAt(target);

            }

        }

    }

and in the hierarchy select your player gameobject and in the inspector see the tag option and select the Player tag and you are ready :wink:

3

Unfortunately I get an error using your modified script.

Assets/_Scripts/LookAt.cs(37,17): error CS0029: Cannot implicitly convert type UnityEngine.GameObject' to UnityEngine.Transform’

37,17 of the script is LINE 19 shown on your code block.
target = GameObject.FindGameObjectWithTag(“Player”);

I do have my player set up with the Tag Player.

Thanks for you help.

4

This error happens because the variable type that FindObjectWithTag returns is a GameObject, but the variable you are trying to store it in is declared as a Transform.

You just need to make sure your types match up correctly. In this case, you can either change your variable “target” to be a GameObject, or simple change the code to:

target = GameObject.FindGameObjectWithTag("Player").transform;

This will return the Transform property of the GameObject so that it matches the variable type of target.

This is a common problem error you will get while programming, and it’s usually just a little typo like in this case. Sometimes, though, it could mean your logic is completely wrong (using the wrong type of object in the wrong way).

5

That did the trick. Thank you. Also thank you for the explanation. That will help me better understand and maybe fix my own errors soon enough. :slight_smile: \

6

ohh sorry @ensabguine thanks for correcting me