Enemy_StandardWeak.cs

using UnityEngine;
using System.Collections;

public class Enemy_StandardWeak : MonoBehaviour 
{
	#region Field
	public float enemyMoveSpeed;
	public int enemyHealth;
	public int enemyDamage;
	private Vector3 selfPosition;
	public GameObject JoyStone;
		    private Vector3 moveDirection = Vector3.zero;
			private CharacterController controller;
	//this is a test for child toggle
	public GameObject testChild001;
	public GameObject water_baddie_front;
	public GameObject water_baddie_back;
	public GameObject water_baddie_left;
	public GameObject water_baddie_right;
	


	enum EnemyMentalState
	{
		idle,
		moving
		//aggressive,		
	}
	enum EnemyDirection
	{
		up,
		down,
		left,
		right
	}
	private EnemyMentalState mentalstate = EnemyMentalState.moving;
	private EnemyDirection direction = EnemyDirection.right;
	#endregion
	//helper function that choose randomly from a enum
	static T GetRandomEnum<T>()
	{
    	System.Array A = System.Enum.GetValues(typeof(T));
    	T V = (T)A.GetValue(UnityEngine.Random.Range(0,A.Length));
    	return V;
	}

	// Use this for initialization
	void Start () 
	{
		StartCoroutine(EnemyBehavior());
		water_baddie_back = GameObject.Find("water_baddie_back");
		water_baddie_front = GameObject.Find("water_baddie_front");
		water_baddie_left = GameObject.Find("water_baddie_left");
		water_baddie_right = GameObject.Find("water_baddie_right");
		water_baddie_back.SetActive(false);
		water_baddie_left.SetActive(false);
		water_baddie_right.SetActive(false);
		water_baddie_front.SetActive(true);
	}
	
	// Update is called once per frame
	void Update () 
	{
					        CharacterController controller = this.gameObject.GetComponent<CharacterController>();
									controller.isTrigger = true;
							if(transform.position.y != 0)
						transform.Translate(0, -transform.position.y, 0);

		//updating selfPosition
		selfPosition = new Vector3(transform.position.x, 0, transform.position.z);
		//initiallize and updates self direction
		Vector3 CurrentDirection = Vector3.right;
		#region CurrentDirection choose(need improvement)
		if(direction == EnemyDirection.up)
			CurrentDirection = Vector3.forward;
		else if(direction == EnemyDirection.down)
			CurrentDirection = Vector3.back;
		else if(direction == EnemyDirection.right)
			CurrentDirection = Vector3.right;
		else if(direction == EnemyDirection.left)
			CurrentDirection = Vector3.left;
		moveDirection = CurrentDirection * enemyMoveSpeed;
		#endregion
		//behavior implements based on mental state
		if (mentalstate == EnemyMentalState.idle)
			transform.Translate(0,0,0);
		else if (mentalstate == EnemyMentalState.moving)
		{
			//float amtToMove = enemyMoveSpeed * Time.deltaTime;
			//transform.Translate (CurrentDirection * amtToMove);	
			
						        controller.Move (moveDirection * Time.deltaTime);
			

		}
		
		//boundary check
		if(transform.position.x <= -35 || transform.position.x >= 35 || transform.position.z >= 20 ||transform.position.z <= -20)
			Destroy(this.gameObject);
		
	
	}
	#region EnemyBehavior
	IEnumerator EnemyBehavior()
	{
		while(true)
		{
			yield return new WaitForSeconds(1f);
			mentalstate = GetRandomEnum<EnemyMentalState>();
			direction = GetRandomEnum<EnemyDirection>();			
		}
	}
	#endregion
	//Func lose health, usually called by ammo unit
	void gotHit(int dmg)
	{
		/*
		GameObject testchild = GameObject.Find("water_baddie_right");
		testchild.gameObject.SetActive(false);
		testChild001.SetActive(true);*/ //hidden for done testing
		//GameObject testchild2 = GameObject.Find ("water_baddie_left");
		//testchild2.gameObject.SetActive(false);
		
		enemyHealth = enemyHealth - dmg;
		//death and leave coin behind
		if(enemyHealth <= 0)
		{
			Instantiate(JoyStone, selfPosition, Quaternion.identity);
			Destroy(this.gameObject);
			
			}
	}
	
	//hit player by collide, call player gothit function
	void OnTriggerEnter(Collider otherObject)
	{
		//Debug.Log ("got hit");

		if (otherObject.tag == "Player")
		{
			otherObject.gameObject.SendMessage("heroGotHit",enemyDamage);
		}
	}
}