using UnityEngine;
using System.Collections;

[ExecuteInEditMode]
public class Crossbow : Gun {
	public Button fireButton;
	public CrossHair crosshair;
	public GameObject arrowTemplate;
	private GameObject fireSpot;
	private SoundTable sounds;
	public AudioClip singleShotSound;
	public AudioClip reloadSound;
	private AudioSource shootAudioSource;
	private const int cartridgeSize = 30; 
	private int loadedAmmo = 0;
	private int availableAmmo = cartridgeSize * 5;

	// Use this for initialization
	void Start () {
		fireButton.EventDown += new ButtonDelegate (onFire);
		fireSpot = Utils.FindChildRecursive (gameObject, "FireSpot");
		shootAudioSource = fireSpot.AddComponent<AudioSource> ();
		sounds = gameObject.GetComponent<SoundTable> ();
		Reload ();
	}

	void onFire(Button btn){
		if (loadedAmmo > 0) {
				var shootTarget = crosshair.Target;
				GameObject arrow = (GameObject)Instantiate (arrowTemplate);
				arrow.transform.position = transform.TransformPoint (Vector3.zero);
				CrossbowArrow scr = arrow.GetComponent<CrossbowArrow> ();
				scr.StartPoint = fireSpot.transform.TransformPoint (Vector3.zero);
				scr.EndPoint = shootTarget;
				scr.Speed = 40;
				arrow.SetActive (true);
	
				//shootAudioSource.PlayOneShot (singleShotSound);
				loadedAmmo --;
		} else {
			shootAudioSource.PlayOneShot (reloadSound);
			Reload();
		}
	}

	void Reload(){
		if (loadedAmmo < cartridgeSize && availableAmmo > 0) {
			int emptyCount = cartridgeSize - loadedAmmo;
			int loadCount = emptyCount > availableAmmo ? availableAmmo : emptyCount;
			loadedAmmo += loadCount;
			availableAmmo -= loadCount;
		}
	}

	// Update is called once per frame
	void Update () {
	
	}

	public override int GetLoadedAmmo(){
		return loadedAmmo;
	}
	public override int GetAvailableAmmo(){
		return availableAmmo;
	}

	void OnDrawGizmos(){
		Gizmos.DrawWireSphere (transform.position, 0.5f);
		Gizmos.DrawRay ( new Ray(transform.position, transform.forward * 2));
	}
}