How do i get one object to track and move towards another object-CodePudding

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EnemyControler : MonoBehaviour
{
    private Transform player;
    // Start is called before the first frame update
    void Start()
    {

        //Note in this case we're saving the transform in a variable to work with later. 

        //We could save the player's game object (and just remove .transform from the below) but this is cleaner
       var player = GameObject.FindWithTag("Player").transform;
    }

    // Update is called once per frame
    void Update()
    {

        //**** The code below you need to modify and move into your own method and call that method from here.

        //**** Don't overthink it. Look at how Start() is defined. Your own Move method would look the exact same.

        //**** Experiment making it private void instead of public void. It should work the same.

        //How much will we move by after 1 second? .5 meter
        var step = .5f * Time.deltaTime; // 5 m/s

        var newPosition = Vector3.MoveTowards(transform.position, player, step);//This is one way to move a game object by updating the transform. Watch the videos in this module and it should become apparent what goes here.
    }
}

The transform does not map to the tagged player. I was trying to get an enemy in unity to move towards a moving player for a class, but I'm completely lost.

CodePudding user response：

Try doing something like this ive used this in the past to do something similar once you understand the code change it to what you desire

        public int minRange;
        private Transform target = null;
        
            private void OnTriggerEnter(Collider other)
            {
                if (other.tag == "Player")
                    target = other.transform;
            }
        
            private void OnTriggerExit(Collider other)
            {
                if (other.tag == "Player")
                    target = null;
            }   
        
            void update()
            {
                transform.LookAt(target);
                float distance = Vector3.Distance(transform.position, 
                target.position);
                bool tooClose = distance < minRange;
                Vector3 direction = tooClose ? Vector3.back : Vector3.forward;
                if (direction == Vector3.forward)
                {
                    transform.Translate(direction * 6 * Time.deltaTime);
                }
                else
                {
                    transform.Translate(direction * 3 * Time.deltaTime);
                 }
            }

CodePudding user response：

You had three issues in your code. The first was that you were defining a new player variable in the Start method. This hid the player member field you defined earlier.

The second issue was that you were getting a value to move towards, but you weren't assigning that value to the current objects position.

The third issue was that you were feeding in a Transform into the MoveTowards method, when you should have been feeding in a Vector2.

The code below should rectify these issues.

public class EnemyControler : MonoBehaviour
{
    private Transform _player;

    void Start()
    {
       _player = GameObject.FindWithTag("Player").transform;
    }

    void Update()
    {
        var step = .5f * Time.deltaTime;
        transform.position = Vector3.MoveTowards(transform.position, _player.position, step);
    }
}