using UnityEngine;
using System.Collections;

public class Camera_Movement : MonoBehaviour
{

    public Transform target;
    public Transform targetBody;
    public float targetHeight = 1.2f;
    public float distance = 4.0f;
    public float maxDistance = 6;
    public float minDistance = 1.0f;
    public float xSpeed = 250.0f;
    public float ySpeed = 120.0f;
    public float yMinLimit = -10;
    public float yMaxLimit = 70;
    public float zoomRate = 80;
    public float rotationDampening = 3.0f;
    private float x = 20.0f;
    private float y = 0.0f;
    public Quaternion aim;
    public float aimAngle = 8;
    public bool lockOn = false;
    RaycastHit hit;
    public GameObject aimStick; //For Mobile

    void Start()
    {
        Vector3 angles = transform.eulerAngles;
        x = angles.y;
        y = angles.x;

        if (GetComponent<Rigidbody>())
            GetComponent<Rigidbody>().freezeRotation = true;
        //Screen.lockCursor = true;
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;
    }

    void FixedUpdate()
    {
        if (!target)
            return;
        if (!targetBody)
        {
            targetBody = target;
        }

        if (Time.timeScale == 0.0f || GlobalCondition.freezeAll)
        {
            return;
        }

        x += Input.GetAxis("Mouse X") * xSpeed * 0.02f;
        y -= Input.GetAxis("Mouse Y") * ySpeed * 0.02f;



        distance -= (Input.GetAxis("Mouse ScrollWheel") * Time.deltaTime) * zoomRate * Mathf.Abs(distance);
        distance = Mathf.Clamp(distance, minDistance, maxDistance);

        y = ClampAngle(y, yMinLimit, yMaxLimit);

        // Rotate Camera
        Quaternion rotation = Quaternion.Euler(y, x, 0);
        transform.rotation = rotation;
        aim = Quaternion.Euler(y - aimAngle, x, 0);

        //Camera Position

        Vector3 positiona = target.position - (rotation * Vector3.forward * distance + new Vector3(0.0f, -targetHeight, 0.0f));
        transform.position = positiona;

        Vector3 trueTargetPosition = target.transform.position - new Vector3(0.0f, -targetHeight, 0.0f);

        Debug.DrawLine(trueTargetPosition, transform.position);
        if (Physics.Linecast(trueTargetPosition, transform.position, out hit))
        {
            if (hit.transform.tag == "Wall")
            {
                float tempDistance = Vector3.Distance(trueTargetPosition, hit.point) - 0.28f;

                positiona = target.position - (rotation * Vector3.forward * tempDistance + new Vector3(0, -targetHeight, 0));
                transform.position = positiona;
            }

        }
    }

    static float ClampAngle(float angle, float min, float max)
    {
        if (angle < -360)
            angle += 360;
        if (angle > 360)
            angle -= 360;
        return Mathf.Clamp(angle, min, max);

    }
}