using UnityEngine;
using System.Collections;

public class CrossbowArrow : MonoBehaviour {

	public Vector3 StartPoint;
	public Vector3 EndPoint;
	public Vector3 CurrentPosition;
	public Vector3 NextPosition;
	public float Speed;
	public GameObject physicsHits;
	private float distance = 0.0f;
	private RaycastHit hit;
	private Vector3 forward;

	// Use this for initialization
	void Start () {
		forward = (EndPoint - StartPoint).normalized;
	}

	// Update is called once per frame
	void Update () {
		CurrentPosition = StartPoint + (EndPoint - StartPoint).normalized * distance;
		distance += Time.deltaTime * Speed;

		NextPosition = StartPoint + (EndPoint - StartPoint).normalized * distance;


		if (distance >= 50) {
			Destroy (this);
		} else {
			RaycastHit hit;
			if(Physics.Raycast(new Ray(CurrentPosition, forward), out hit)){
				//Debug.Log("Pointing on: " + hit.collider.gameObject.name);
				if(hit.distance <= (NextPosition - CurrentPosition).magnitude){
					NextPosition = CurrentPosition + transform.forward * hit.distance;
					Destroy(gameObject);

					var mat = hit.collider.sharedMaterial;
					string hitName = "HitDefault";
					if(mat != null && mat.name == "Glass"){
						hitName = "HitGlass";
					}

					GameObject hitObjSrc = physicsHits.transform.Find(hitName).gameObject;
					GameObject  hitObj = (GameObject)Instantiate(hitObjSrc);
					hitObj.transform.localPosition = hit.point;
					hitObj.transform.rotation = Quaternion.FromToRotation(Vector3.up, hit.normal);
					hitObj.SetActive(true);

					//hit.normal

				}
			}else{
				//Debug.Log("Pointing on: Nothing"); 
			}

		}

		transform.position = NextPosition;
	}

	void OnDrawGizmos(){
		Gizmos.DrawLine (CurrentPosition, CurrentPosition + forward * 10);
	}
}