using UnityEngine;

public class ufoController : MonoBehaviour {

    public GameObject mainUFO;
    public float sensitivity;
    public float speed;
    public float smoothness = 0.3f;
    public Transform originalPos;
    public Transform targetForward;
    public Transform targetBackwards;
    Rigidbody rb;
    Animation anim;

    void Start ()
    {
        rb = GetComponent<Rigidbody>();
        anim = mainUFO.GetComponent<Animation>();
        anim.CrossFade("Idle");
    }

    void Update ()
    {
        //Movement
        float xPos = Input.GetAxisRaw("Horizontal");
        float zPos = Input.GetAxisRaw("Vertical");

        Vector3 xMov = Camera.main.transform.right * xPos;
        Vector3 zMov = Camera.main.transform.forward * zPos;

        Vector3 velocity = (xMov + zMov).normalized * speed;

        if (velocity != Vector3.zero)
        {
            rb.MovePosition(rb.position + velocity * Time.deltaTime);
        }

        //Camera
        float xRot = Input.GetAxisRaw("Mouse Y");
        float yRot = Input.GetAxisRaw("Mouse X");

        Vector3 vectorX = new Vector3(xRot, 0, 0) * sensitivity;
        Vector3 vectorY = new Vector3(0, yRot, 0) * sensitivity;

        rb.MoveRotation(rb.rotation * Quaternion.Euler(vectorY));
        Camera.main.transform.Rotate(-vectorX);

        Vector3 vel = Vector3.zero;
        if (Input.GetKey(KeyCode.W))
        {
            anim.Stop("Idle");
            Vector3 targetPosForward = new Vector3(targetForward.transform.position.x, targetForward.transform.position.y, targetForward.transform.position.z);
            mainUFO.transform.position = Vector3.SmoothDamp(mainUFO.transform.position, targetPosForward, ref vel, smoothness);
        } else
        {
            Vector3 originalPosPos = new Vector3(originalPos.transform.position.x, originalPos.transform.position.y, originalPos.transform.position.z);
            mainUFO.transform.position = Vector3.SmoothDamp(mainUFO.transform.position, originalPosPos, ref vel, smoothness);

        }


        if (Input.GetKey(KeyCode.S))
        {
            anim.Stop("Idle");
            Vector3 targetPosBackwards = new Vector3(targetBackwards.transform.position.x, targetBackwards.transform.position.y, targetBackwards.transform.position.z);
            mainUFO.transform.position = Vector3.SmoothDamp(mainUFO.transform.position, targetPosBackwards, ref vel, smoothness);
        }
        else
        {
            Vector3 originalPosPos = new Vector3(originalPos.transform.position.x, originalPos.transform.position.y, originalPos.transform.position.z);
            mainUFO.transform.position = Vector3.SmoothDamp(mainUFO.transform.position, originalPosPos, ref vel, smoothness);

        }


        if (mainUFO.transform.position == originalPos.transform.position)
        {
            anim.CrossFade("Idle");
        }
    }

}