using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using MLAPI;

public class PlayerController : NetworkBehaviour
{
    public Transform playerCamera = null;
    public CharacterController playerController = null;

    public float mouseSensitivity = 3.5f;
    public float speed = 10f;
    public float gravity = -13f;
    public float mouseSmoothTime = 0.03f;
    public float moveSmoothTime = 0.3f;

    float cameraPitch = 0.0f;
    float velocityY = 0.0f;

    Vector2 currentMouseDelta = Vector2.zero;
    Vector2 currentMouseDeltaVelocity = Vector2.zero;

    Vector2 currentDirection = Vector2.zero;
    Vector2 currentDirectionVelocity = Vector2.zero;
    
    // Start is called before the first frame update
    void Start()
    {
        Cursor.lockState = CursorLockMode.Locked;

        if (!IsLocalPlayer)
        {
            playerCamera.GetComponent<AudioListener>().enabled = false;
            playerCamera.GetComponent<Camera>().enabled = false;
        }
    }

    // Update is called once per frame
    void Update()
    {
        if (IsLocalPlayer)
        {
            UpdateMouseLook();
            UpdateMovement();

            if (Input.GetKey(KeyCode.LeftShift))
            {
                speed = 20f;
            }
            else
            {
                speed = 10f;
            }

            if (Input.GetKeyDown(KeyCode.Escape))
            {
                Application.Quit();
            }
        }
    }

    void UpdateMouseLook()
    {
        Vector2 targetMouseDelta = new Vector2(Input.GetAxis("Mouse X"), Input.GetAxis("Mouse Y"));

        currentMouseDelta = Vector2.SmoothDamp(currentMouseDelta, targetMouseDelta, ref currentMouseDeltaVelocity, mouseSmoothTime);

        cameraPitch -= currentMouseDelta.y * mouseSensitivity;
        cameraPitch = Mathf.Clamp(cameraPitch, -90f, 90f);

        playerCamera.localEulerAngles = Vector3.right * cameraPitch;

        transform.Rotate(Vector3.up * currentMouseDelta.x * mouseSensitivity);
    }

    void UpdateMovement()
    {
        Vector2 targetDirection = new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"));
        targetDirection.Normalize();

        currentDirection = Vector2.SmoothDamp(currentDirection, targetDirection, ref currentDirectionVelocity, moveSmoothTime);
        
        if (playerController.isGrounded)
        {
            velocityY = 0.0f;
        }
        velocityY += gravity * Time.deltaTime;

        Vector3 velocity = (transform.forward * currentDirection.y + transform.right * currentDirection.x) * speed + Vector3.up * velocityY;

        playerController.Move(velocity * Time.deltaTime);
    }
}