using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class PlayerHealth : MonoBehaviour
{
	public int startingHealth = 100;                            // The amount of health the player starts the game with.
	public int currentHealth;                                   // The current health the player has.
	public Slider healthSlider;                                 // Reference to the UI's health bar.
	public Image damageImage;                                   // Reference to an image to flash on the screen on being hurt.
	public AudioClip deathClip;                                 // The audio clip to play when the player dies.
	public float flashSpeed = 5f;                               // The speed the damageImage will fade at.
	public Color flashColour = new Color(1f, 0f, 0f, 0.1f);     // The colour the damageImage is set to, to flash.
	public Transform target;



	public AudioSource sounds;
	public AudioClip vida;
	public AudioClip dano;
	public AudioClip dano2;
	public AudioClip dano3;
	bool isDead;                                                // Whether the player is dead.
	bool damaged;                                               // True when the player gets damaged.
	public int PlayAudio;

	void Awake ()
	{
		sounds = GetComponent<AudioSource>();

		// Set the initial health of the player.
		currentHealth = startingHealth;
	}


	void Update ()
	{
		PlayAudio = Random.Range(1, 4);
		if(currentHealth <= 0 && !isDead)
		{
			// ... it should die.
			isDead = false;
			sounds.PlayOneShot(deathClip,1.5F);
			StartCoroutine("Respawn", 5f);
			healthSlider.normalizedValue = 100;
			currentHealth = 100;
		}


		// If the player has just been damaged...
		if(damaged)
		{
			// ... set the colour of the damageImage to the flash colour.
			damageImage.color = flashColour;
		}
		// Otherwise...
		else
		{
			// ... transition the colour back to clear.
			damageImage.color = Color.Lerp (damageImage.color, Color.clear, flashSpeed * Time.deltaTime);
		}

		// Reset the damaged flag.
		damaged = false;
	}


	public void TakeDamage (int amount)
	{
		// Set the damaged flag so the screen will flash.
		damaged = true;

		// Reduce the current health by the damage amount.
		currentHealth -= amount;

		// Set the health bar's value to the current health.
		healthSlider.value = currentHealth;

		// Play the hurt sound effect.
		Playsound ();

		// If the player has lost all it's health and the death flag hasn't been set yet...

	}


	public void TakeHealth (int amount)
	{

		// Reduce the current health by the damage amount.
		currentHealth += amount;

		// Set the health bar's value to the current health.
		healthSlider.value = currentHealth;


		// Play the hurt sound effect.
		sounds.PlayOneShot(vida,0.8F);

	}

	void Playsound ()
	{
		if (PlayAudio == 1)
		{
			sounds.PlayOneShot(dano,1.0F);
		}
		if (PlayAudio == 2)
		{
			sounds.PlayOneShot(dano2,1.0F);
		}
		if (PlayAudio == 3)
		{
			sounds.PlayOneShot(dano3,1.0F);
		}
	}
	IEnumerator Respawn(float spawnDelay)
	{
		yield return new WaitForSeconds ( 1.7f );

		// Change player location to active checkpoint
		this.transform.position = target.position;
	}
}