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

[RequireComponent(typeof(AudioSource))]
public class Shooting : MonoBehaviour {
	public Texture2D crosshairTexture;
	public AudioClip pistolShot;
	public AudioClip reloadSound;
	public int maxAmmo = 200;
	public int clipSize = 10;
	public GUIText ammoText;
	public float reloadTime = 2.0f;

	private int currentAmmo = 30;
	private int currentClip;
	private Rect position;
	private float range = 10.0f;
	private GameObject pistolSparks;
	private Vector3 fwd;
	private RaycastHit hit;
	private bool isReloading = false;

	private float timer = 0.0f;

	// Use this for initialization
	void Start () {

		currentClip = clipSize;

		Cursor.visible = false;
		Cursor.visible = false;
		position = new Rect((Screen.width - crosshairTexture.width) / 2,
			(Screen.height - crosshairTexture.height) /2,
			crosshairTexture.width,
			crosshairTexture.height);

		pistolSparks = GameObject.Find("Sparks");
		pistolSparks.GetComponent<ParticleEmitter>().emit = false;
		GetComponent<AudioSource>().clip = pistolShot;
	}

	// Update is called once per frame
	void Update () {
		fwd = transform.TransformDirection (Vector3.forward);

		if (Input.GetButtonDown ("Fire1") && currentClip > 0 && !isReloading) {

			if (isReloading) {
				timer += Time.deltaTime;
				if (timer >= reloadTime) {
					int needAmmo = clipSize - currentClip;

					if (currentAmmo >= needAmmo) {
						currentClip = clipSize;
						currentAmmo -= needAmmo;
					} else {
						currentClip += currentAmmo;
						currentAmmo = 0;
					}

					audio.clip = pistolShot;
					isReloading = false;
					timer = 0.0f;
				}
			}

			if (((Input.GetButtonDown ("Fire1") && currentClip == 0) || Input.GetButtonDown ("Reload")) && currentClip < clipSize) {
				if (currentAmmo > 0) {
					audio.clip = reloadSound;
					audio.Play ();
					isReloading = true;
				}
			}

			if (Input.GetButtonDown ("Fire1") && currentClip > 0) {
				currentClip--;

				if (Input.GetButtonDown ("Fire1")) {
					pistolSparks.GetComponent<ParticleEmitter> ().Emit ();
					GetComponent<AudioSource> ().Play ();

					if (Physics.Raycast (transform.position, fwd, out hit)) {
						if (hit.transform.tag == "Enemy" && hit.distance < range) {
							Debug.Log ("Trafiony przeciwnik");

						} else if (hit.distance < range) {
							Debug.Log ("Trafiona Sciana");
						}
					}
				}
			}
		}
	}

	void OnGUI()
	{
		GUI.DrawTexture (position, crosshairTexture);
		ammoText.pixelOffset = new Vector2(-Screen.width / 2 + 100, -Screen.height / 2 + 30);
		ammoText.text = currentClip + " / " + currentAmmo;
	}

}