TrackingProjectile

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

public class TrackingProjectile : BaseProjectile {

    GameObject m_target;
    private Rigidbody rb;
    public float Push = 3;
    GameObject m_launcher;
    int m_damage;
    public GameObject Explosion;

    Vector3 m_LastKnownPostion;
    private void Start()
    {
        rb = GetComponent<Rigidbody>();
    }

    // Update is called once per frame
    void Update()
    {
        if (m_target)
        {
            m_LastKnownPostion = m_target.transform.position;
        }
        else
        {
            if(transform.position == m_LastKnownPostion)
            {
                //Object is created where the bomb is on impact, this creates the explosion before despawning
                GameObject BoomHolder = Instantiate(Explosion, gameObject.transform.position, gameObject.transform.rotation) as GameObject;
                //Destroy the Bomb
                Destroy(gameObject);
                //Destory the BoomHolder after 5 Seconds (Make this slightly longer than your clip)
                Destroy(BoomHolder, 5.0f);
            }
        }
        transform.position = Vector3.MoveTowards(transform.position, m_LastKnownPostion, Speed * Time.deltaTime);
        transform.LookAt(m_target.transform, m_target.transform.up);
        rb.AddRelativeForce(0, 0, Push);
    }
    public override void FireProjectile(GameObject launcher, GameObject target, int damage, float attackSpeed)
    {
        if (target)
        {
            m_target = target;
            m_LastKnownPostion = target.transform.position;
            m_launcher = launcher;
            m_damage = damage;
        }
    }
//Same deal as in the base projectile we will add this code in the Message Handler portion of the tutorial
    public void OnCollisionEnter(Collision other)
    {/*
        if (other.gameObject == m_target)
        {
            DamageData dmgData = new DamageData();
            dmgData.damage = m_damage;

            MessageHandler msgHandler = m_target.GetComponent<MessageHandler>();

            if (msgHandler)
            {
                msgHandler.GiveMessage(MessageType.DAMAGED, m_launcher, dmgData);
            }
        }
        //Dont destroy when you come in contact with bullets otherwise do destroy
        if (other.gameObject.GetComponent<BaseProjectile>() == null)
            Destroy(gameObject);
    */}
}