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

public class gravityWell : MonoBehaviour {

	public float wellMass;
	public int gravConstPow;

	public GameObject[] targets;
	//public float minDistance;
	//public float bufferZone;
	//public float bufferDampner;
	public float clampVelo;
	public float maxVelo;

	public float moveSpeed;

	// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void FixedUpdate () {
		foreach (GameObject target in targets) {
			/*target.rigidbody.AddForce( calcGrav (target));
			target.rigidbody.velocity = Vector3.ClampMagnitude(target.rigidbody.velocity, clampVelo);
			Debug.Log(target.rigidbody.velocity.magnitude);*/
			float step = moveSpeed * Time.deltaTime;
			target.transform.position = Vector3.MoveTowards(target.transform.position,transform.position, step);
		}



	
	}

	private Vector3 calcGrav(GameObject target){
		double GRAVCONSTANT = 6.673f * Mathf.Pow (10, gravConstPow);

		Vector3 distance = this.transform.position - target.transform.position;
		float mag = distance.magnitude;

			distance /= mag;

			float gravityForce = (target.GetComponent<Rigidbody>().mass * wellMass * (float)GRAVCONSTANT) / (mag * mag);

		//if (minDistance > mag)
		//	return (Vector3.zero);
		//else if (bufferZone > mag)
		//	return (-(distance * gravityForce)/bufferDampner);
		//else 
		Debug.Log ((distance * gravityForce).magnitude);
		if ((distance * gravityForce).magnitude > maxVelo)
			return (Vector3.zero);
		else
			return (distance * gravityForce);

	}


}