using UnityEngine;
using System.Collections;

public class MobBehavior : MyBehavior {
   public MyHp thisHp;
   private bool isLive = true;
   // Use this for initialization
   void Start () {
    thisHp = GetComponent<MyHp> ();
   }

   public override void SetDamage(float damage){
    if (isLive) {
     if(thisHp.SetDamage(damage)){
      //моб жив ничего не делаем
     }else{
      Debug.Log("Моб умер");
     }
    }
   }
}

using UnityEngine;
using System.Collections;

public class MobHp : MyHp {
     public float fullHp = 100;
     public float currentHp;

     // Use this for initialization
     void Start () {
      currentHp = fullHp;
     }
         
     public override bool SetDamage(float damage){
      currentHp -= damage;
      if (currentHp > 0) {
       return true;
      } else {
       Destroy(gameObject);
       return false;
      }
     }
}

using UnityEngine;
using System.Collections;

public class MyPlayerShoot : MonoBehaviour {
     public GameObject bulletPrefab;
     public float bulletSpeed = 30;
     public float shootPause = 1;
     private float timeLastShoot = 0;
     public float shootRadius = 10;
     private Transform mobTransform;
     // Use this for initialization
     void Start () {
         
     }
         
     // Update is called once per frame
     void Update () {
      if (Input.GetMouseButtonDown (1)) {
       lookTarget();
       float distance = Vector3.Distance (transform.position, mobTransform.position);
       if(distance> shootRadius){
        Debug.Log("Моб слишком далеко");
       }else{
        if(Time.time> timeLastShoot + shootPause){
         GameObject newBullet = (GameObject) Instantiate(bulletPrefab, transform.position + transform.forward,
                       Quaternion.identity);
         Rigidbody newBulletRigidbody = newBullet.GetComponent<Rigidbody>();
         newBulletRigidbody.AddForce(mobTransform.position * bulletSpeed, ForceMode.VelocityChange);
         timeLastShoot = Time.time;

        }
       }
      }
     }
     void lookTarget(){
      GameObject[] mobs = GameObject.FindGameObjectsWithTag ("Mob");
      if (mobs != null) {
       foreach (GameObject mob in mobs) {
        mobTransform = mob.transform;       
       }
      }
      else {
       Debug.Log("Нет доступных мобов");
      }
     }
}

using UnityEngine;
using System.Collections;

public class MyBullet : MonoBehaviour {
     public float timeLive = 40;
     private float timeDeath;

     // Use this for initialization
     void Start () {
      timeDeath = Time.time + timeLive;// что бы патрон летел вечно
     }
         
     // Update is called once per frame
     void FixedUpdate () {
     if (Time.time > timeDeath) {// проверяем  не пора ли умирать  патрону
       Destroy (gameObject);
      }

     }
     void OnCollisionEnter(Collision myCollision){

      MyBehavior collisionBehaivor = myCollision.gameObject.GetComponent<MyBehavior> ();
      Debug.Log (collisionBehaivor);
      if (collisionBehaivor) {
       collisionBehaivor.SetDamage(30);
       Debug.Log("Нанес 30 урона");
      }

      Destroy ( gameObject);

         
     }
}

using UnityEngine;
using System.Collections;

public class MyBullet : MonoBehaviour {
  public float timeLive = 40;
  private float timeDeath;

  // Use this for initialization
  /*void Start () {
   timeDeath = Time.time + timeLive;// что бы патрон летел вечно
  }
   
  // Update is called once per frame
  void FixedUpdate () {
  if (Time.time > timeDeath) {// проверяем  не пора ли умирать  патрону
    Destroy (gameObject);
   }

  }*/
  void OnCollisionEnter(Collision myCollision){

   MyBehavior collisionBehaivor = myCollision.gameObject.GetComponent<MyBehavior> ();
   Debug.Log (collisionBehaivor);
   if (collisionBehaivor) {
    collisionBehaivor.SetDamage(30);
    Debug.Log("Нанес 30 урона");
   }

   //Destroy ( gameObject);

   
  }
}