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

public class PlayerScript : MonoBehaviour
{
    
	public float speed;
	public GameObject bullet;

	public AudioClip[] gunshots;
	public AudioClip[] damage;

	private int life = 3;
	private float translation;
    private float rotation;
    private float nextFire = 0.0f;
    private float myTime = 0.0f;
    private GameObject reloaded;
	private Rigidbody2D rb;
	private Vector2 movement;
	private Animator animator;

	private AudioSource audioSource;

	void Awake()
	{
		animator = GetComponent<Animator>();
		audioSource = GetComponent<AudioSource>();
		rb = GetComponent<Rigidbody2D>();
		reloaded = GameObject.Find("Reloaded");
	}

    void Update()
    {

    	movement.x = Input.GetAxis("Horizontal");
    	movement.y = Input.GetAxis("Vertical");

    	animator.SetFloat("Horizontal", movement.x);
    	animator.SetFloat("Vertical", movement.y);
    	animator.SetFloat("Speed", movement.sqrMagnitude);
     
     	reloaded.SetActive(false);
     	myTime += Time.deltaTime;

     	if(myTime > nextFire)
     	{
     		reloaded.SetActive(true);
     	}

        if(Input.GetButton("Fire1") && myTime > nextFire)
        {
        	GunFire();
        	nextFire = Random.Range(0.25f, 2.0f);
            myTime = 0.0f;
        }

        if(life <= 0)
        {
        	Destroy(gameObject);
        }

    }

    void FixedUpdate()
    {

    	rb.MovePosition(rb.position + movement * speed * Time.fixedDeltaTime);

    }

    void OnCollisionEnter2D(Collision2D other)
   {

   		if(other.gameObject.tag == "Bullet")
   		{
   			Physics2D.IgnoreCollision(
   				other.gameObject.GetComponent<Collider2D>(), GetComponent<Collider2D>());
   		}

   		if(other.gameObject.tag == "Enemy")
   		{
   			AudioSource.PlayClipAtPoint(
       			damage[Random.Range(0,damage.Length)], new Vector3(0, 0, 0));

   			life--;

   			if(life > 0)
   			{
   				Destroy(GameObject.Find("Life ("+life+")"));
			} else {
				Destroy(GameObject.Find("Life"));
			}
        	
   		}
       
   }

   void GunFire()
   {

   		int gunSelect = 0;
   		GameObject newBullet;
   		float scaleChange = 1.0f;
   		Vector3 pos = PlayerCircle(transform.position);
   		Quaternion rot = Quaternion.FromToRotation(Vector3.down, transform.position-pos);

   		if(Random.Range(0,8) == 0)
   		{

   			gunSelect = Random.Range(1,4);

   		}

   		switch(gunSelect)
   		{

   			//pistol
   			case 0:
   				newBullet = Instantiate(bullet, pos, rot);
    			scaleChange = Random.Range(0.5f, 1.5f);
    			newBullet.transform.localScale = new Vector2(scaleChange, scaleChange);
    			audioSource.clip = gunshots[Random.Range(0,5)];
   				break;
   			//shotgun
   			case 1:
   				newBullet = Instantiate(bullet, pos, rot);
    			scaleChange = Random.Range(0.5f, 1.5f);
    			newBullet.transform.localScale = new Vector2(scaleChange, scaleChange);
    			newBullet = Instantiate(bullet, pos+((Vector3.up+Vector3.right)*0.75f), Quaternion.FromToRotation(Vector3.down, transform.position-(pos+((Vector3.up+Vector3.right)*0.75f))));
    			newBullet.transform.localScale = new Vector2(scaleChange, scaleChange);
    			newBullet = Instantiate(bullet, pos+((Vector3.down+Vector3.left)*0.75f), Quaternion.FromToRotation(Vector3.down, transform.position-(pos+((Vector3.down+Vector3.left)*0.75f))));
    			newBullet.transform.localScale = new Vector2(scaleChange, scaleChange);
    			audioSource.clip = gunshots[Random.Range(4,8)];
   				break;
   			//machinegun
   			case 2:
   				newBullet = Instantiate(bullet, pos, rot);
    			scaleChange = Random.Range(0.5f, 1.5f);
    			newBullet.transform.localScale = new Vector2(scaleChange, scaleChange);
    			for(int i = 1 ; i < 5; i++)
    			{
    				newBullet = Instantiate(bullet, pos+(Vector3.down+Vector3.left)*(0.1f*i), Quaternion.FromToRotation(Vector3.down, transform.position-(pos+(Vector3.down+Vector3.left)*(0.1f*i))));
    				newBullet.transform.localScale = new Vector2(scaleChange, scaleChange);
    			}
    			audioSource.clip = gunshots[Random.Range(4,9)];
   				break;
   			//railgun
   			case 3:
    			scaleChange = Random.Range(0.5f, 1.5f);
    			for(int i = 0 ; i < 100; i++)
    			{
    				newBullet = Instantiate(bullet, pos, rot);
    				newBullet.transform.localScale = new Vector2(scaleChange, scaleChange);
    			}
    			audioSource.clip = gunshots[Random.Range(8,10)];
   				break;

   		}

       	audioSource.Play();

   	}

	Vector3 PlayerCircle (Vector3 center){
    	float radius = 1.25f;
    	float ang = Random.value * 360;
    	Vector3 circle;

        circle.x = center.x + radius * Mathf.Sin(ang * Mathf.Deg2Rad);
        circle.y = center.y + radius * Mathf.Cos(ang * Mathf.Deg2Rad);
        circle.z = 0;
     
    	return circle;
    }

}