Project_Junker/unity_Project/Assets/Scripts/playerFollow.cs

using UnityEngine;
using System.Collections;

public class playerFollow : MonoBehaviour {

	public GameObject target;
	public float minDistance = 4;
	public bool active;

	private bool follow = false;
	private Rigidbody rigidbody;
	private thirdPersonController playerController;

	// Use this for initialization
	void Start () {
		rigidbody = GetComponent<Rigidbody> ();
		playerController = GetComponent<thirdPersonController> ();
	
	}
	
	// Update is called once per frame
	void Update () {

		if (Input.GetButtonDown ("follow")&& !active)
			follow = !follow;
		if (Input.GetButtonDown ("playerSwap")) {
			active = !active;
			follow = false;
		}


	
	}

	void FixedUpdate(){
		if (follow)
			followPlayer ();
	}



	private void followPlayer(){

		Vector3 lookAtTarget = target.transform.position;
		lookAtTarget.y = transform.position.y;
		transform.LookAt (lookAtTarget);

		if (minDistance < Vector3.Distance (target.transform.position, transform.position)) {
			Vector3 direction = target.transform.position;
			direction.y = transform.position.y;
			direction -= transform.position;

			direction.Normalize ();

			rigidbody.AddForce (direction * playerController.movementSpeed * Time.deltaTime);
		} else {
			playerController.applyGrip ();
		}

	}



}