GameObject1 move away when GameObject2 gets close

I currently have a script which (in 2D space) tells my enemy GameObject to chase after my target (the player). I want it so when the enemy gets too close or when the player moves towards it, it dodges out of the way.

In my code I effectively just said the opposite of the ‘chase’ code (so when it gets too close, move in the opposite direction of the players location).

When I test it, the enemies:

  1. move towards the player normally
    (which is fine)
  2. as soon as they hit minimum distance they immediately move back to their original location
  3. if I DO manage to move my character on top of one it flickers constantly

Any ideas? Is there another function that will allow for just moving in a random direction AWAY from the target when I’m within a certain range?

Thanks guys!

using UnityEngine;
using System.Collections;

public class GuardianKnightMeleeController : MonoBehaviour
    public Transform target;
    public float speed = 5f;
    private float minDistance = 3f;
    private float range;

    void Update()
        range = Vector2.Distance(transform.position, target.position);

        if (range > minDistance)
            transform.position = Vector2.MoveTowards(transform.position, target.position, speed * Time.deltaTime);

        if (range < minDistance)
            transform.position = -Vector2.MoveTowards(transform.position, target.position, speed * Time.deltaTime);


-Vector2.MoveTowards does not define moving away but scaling the position by -1. Instead multiply the maxDistanceDelta by -1 as that will push the vector away from target, i.e.

transform.position = Vector2.MoveTowards(transform.position, target.position, -1 * speed * Time.deltaTime);