using UnityEngine;
using System.Collections;

public class FPSMouseLook : MonoBehaviour
{

    public enum RotationAxes { MouseX, MouseY, MouseOrbit}
    public RotationAxes axes = RotationAxes.MouseX;
    public float dist;
    [HideInInspector]
    public Transform target; //This needed to be assigned in case of MouseOrbit option selected

    float currentSensitivityX = 1.5F;
    float currentSensitivityY = 1.5F;

    float sensitivityX = 1.5F;
    float sensitivityY = 1.5F;

    float minimumY = -60F;
    float maximumY = 60F;
    
    float rotationX = 0F;
    float rotationY = 0F;

    float minimumX = -360F;
    float maximumX = 360F;
    
    Quaternion originalRotation;

    bool doingRecoil = false;
    float recoilAmount = 0.15f;
    float tempRecoil = 0;

    float distance = 5.0f;
    bool reachedTarget = false;

    void Start ()
    {
  // Make the rigid body not change rotation
  if (GetComponent<Rigidbody>())
        {
   GetComponent<Rigidbody>().freezeRotation = true;
  }

  originalRotation = transform.localRotation;
    }
    
    void LateUpdate ()
    {
  if(GameSettings.menuOpened)
   return;

  if(currentSensitivityX != GameSettings.mouseSensitivity || currentSensitivityY != GameSettings.mouseSensitivity)
        {
   currentSensitivityX = currentSensitivityY = GameSettings.mouseSensitivity;
  }

  sensitivityX = currentSensitivityX * (GameSettings.currentFOV/GameSettings.defaultFOV);
  sensitivityY = currentSensitivityY * (GameSettings.currentFOV/GameSettings.defaultFOV);

  if (axes == RotationAxes.MouseX)
        {

#if UNITY_ANDROID || UNITY_IOS || UNITY_WP8 || UNITY_WP8_1
            rotationX += GameSettings.lookDirection.x * sensitivityX;
#else

   
   rotationX += Input.GetAxis("Mouse X") * sensitivityX;
            

#endif

            rotationX = ClampAngle(rotationX, minimumX, maximumX);
            Quaternion xQuaternion = Quaternion.AngleAxis (rotationX, Vector3.up);
   transform.localRotation = originalRotation * xQuaternion;
  }

  if (axes == RotationAxes.MouseY)
        {

#if UNITY_ANDROID || UNITY_IOS || UNITY_WP8 || UNITY_WP8_1
            rotationY += GameSettings.lookDirection.y * sensitivityY;
#else
   rotationY += Input.GetAxis("Mouse Y") * sensitivityY;

#endif

            rotationY = ClampAngle(rotationY, minimumY, maximumY);
            Quaternion yQuaternion = Quaternion.AngleAxis (-rotationY, Vector3.right);
   transform.localRotation = originalRotation * yQuaternion;
  }

  if (axes == RotationAxes.MouseOrbit && reachedTarget && target)
        {

#if UNITY_ANDROID || UNITY_IOS || UNITY_WP8 || UNITY_WP8_1
            rotationX += GameSettings.lookDirection.x * sensitivityX;
            rotationY += GameSettings.lookDirection.y * sensitivityY;
#else
            rotationX += Input.GetAxis("Mouse X") * sensitivityX;
            rotationY -= Input.GetAxis("Mouse Y") * sensitivityY;
#endif

            rotationX = ClampAngle (rotationX, minimumX, maximumX);
   rotationY = ClampAngle (rotationY, minimumY, maximumY);

   Quaternion rotation = Quaternion.Euler(rotationY, rotationX, 0);
   Vector3 position = rotation * new Vector3(0.0f, 0.0f, -distance) + target.position;
    
   transform.rotation = rotation;
   transform.position =  position;
  }
    }
    
    public static float ClampAngle (float angle, float min, float max)
    {
  if (angle < -360F)
        {
   angle += 360F;
  }

  if (angle > 360F)
        {
   angle -= 360F;
  }

  return Mathf.Clamp (angle, min, max);
    }

    public void Recoil()
    {
  //currentRecoil += recoilAmount;
  tempRecoil = 0;

  if(!doingRecoil)
        {
   StartCoroutine(SmoothRecoil());
  }
    }

    IEnumerator SmoothRecoil()
    {
  doingRecoil = true;

  while(tempRecoil < recoilAmount - 0.05f)
        {
   if(tempRecoil < recoilAmount/1.5f)
            {
    tempRecoil = Mathf.Lerp(tempRecoil, recoilAmount, Time.deltaTime * 15);
   }
            else
            {
    tempRecoil = Mathf.Lerp(tempRecoil, recoilAmount, Time.deltaTime * 9);
   }

   rotationY += tempRecoil;

   yield return null;
  }

  //tempRecoil = 0;
  //currentRecoil = 0;

  doingRecoil = false;
    }

    public void AssignTarget(Transform t1)
    {
  if(t1)
        {
   rotationX = t1.eulerAngles.y;
   rotationY = 25;
   target = t1;
   reachedTarget = false;
  }
        else
        {
   rotationX = transform.eulerAngles.y;
   rotationY = 0;
   target = null;
   reachedTarget = true;
  }

  if(target)
        {
   StopCoroutine("MoveToTarget");
   StartCoroutine("MoveToTarget");
  }
    }

    IEnumerator MoveToTarget ()
    {
  Quaternion rotation = Quaternion.Euler(rotationY, rotationX, 0);
  transform.rotation = rotation;
  while(target && Vector3.Distance(rotation * new Vector3(0.0f, 0.0f, -distance) + target.position, transform.position) > 0.1f)
        {
   transform.position = Vector3.MoveTowards(transform.position,  rotation * new Vector3(0.0f, 0.0f, -distance) + target.position, Time.deltaTime * 79);
   yield return null;
  }

  reachedTarget = true;
    }
}