using UnityEngine;
using System.Collections;

public class Enemy_AI : MonoBehaviour {
public Transform target;
	public int moveSpeed;
	public int rotationSpeed;
	public int maxDistance;
	
	private Transform myTransform ;
	
	void Awake(){
		myTransform = transform;
	}
	// Use this for initialization
	void Start () {
		GameObject go = GameObject.FindGameObjectWithTag("Player");
		target = go.transform;
		
		maxDistance = 2;
	
	}
	
	// Update is called once per frame
	void Update () {
		if(Vector3.Distance(target.position, myTransform.position)<30){
		Debug.DrawLine(target.position, myTransform.position, Color.yellow);
	// Look at target
		myTransform.rotation = Quaternion.Slerp(myTransform.rotation , Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed*Time.deltaTime);
		if(Vector3.Distance(target.position, myTransform.position) > maxDistance){
		// Move towards
		myTransform.position +=myTransform.forward*moveSpeed*Time.deltaTime;
		}
	}
}
}

using UnityEngine;
using System.Collections;

public class EnemyAttack : MonoBehaviour {

public GameObject target;
	public float attackTimer;
	public float coolDown;
	
	
	// Use this for initialization
	void Start () {
		attackTimer = 0;
		coolDown = 2.0f;
		
	
	}
	
	// Update is called once per frame
	void Update () {
		if(attackTimer > 0){
			attackTimer -= Time.deltaTime;
		}
		
		if(attackTimer < 0){
			attackTimer = 0;
		}
	
		if(attackTimer == 0){
			Attack();
			attackTimer = coolDown;
		}
			
		
		
	}
	private void Attack(){
		
			float distance = Vector3.Distance(target.transform.position, transform.position);
		
		  Vector3 dir = (target.transform.position - transform.position).normalized;
		
		float direction = Vector3.Dot(dir, transform.forward);
		
			Debug.Log(direction);
			if(distance < 2.5f){
				if(direction > 0){
		     PlayerHealth eh = (PlayerHealth)target.GetComponent("PlayerHealth");
				eh.AddjustCurrHealth(-10);
				}
		  
			}
		}
}

using UnityEngine;
using System.Collections;

public class PlayerHealth : MonoBehaviour {

    public int currHealth = 100;
    public int maxHealth = 100;

	public float HealthBarLength;


	// Use this for initialization
	void Start () {
		HealthBarLength = Screen.width / 2;
		
	
	}
	
	// Update is called once per frame
	void Update () {
		
		
	AddjustCurrHealth (0);
	}

	
    void OnGUI(){
        GUI.Box(new Rect(10, 10, HealthBarLength, 20 ), currHealth + "/" + maxHealth);
    }
	public void AddjustCurrHealth(int adj){
		currHealth += adj;
		
		if(currHealth < 0){
			currHealth = 0;
			
		}
		
		if(currHealth>maxHealth){
			currHealth = maxHealth;
			
		}
		if(maxHealth < 1){
			maxHealth = 1;
		}
		HealthBarLength = (Screen.width / 2) * (currHealth / (float)maxHealth);
	}
}